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R1515H030B-T1-FE - 36V 50mA LDO Regulator 3.0V Fixed SOT-89-5 | Nisshinbo
The Nisshinbo Micro Devices R1515H030B-T1-FE is a low-supply-current, CMOS LDO linear regulator with a fixed 3.0 V output, 50 mA maximum output current, and a maximum input voltage rating of 36 V, housed in a 5-pin SOT-89-5 surface-mount package. The "030B" code in the part number decodes to the 3.0 V fixed output variant, the "H" code designates the SOT-89-5 package, "T1" indicates the 1000-piece embossed taping reel orientation, and "FE" denotes the lead-free, RoHS-compliant terminal finish. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is only marginally higher than the output voltage. The LDO belongs to the broader category of linear regulators, which in turn belong to the family of voltage regulators that form one of the most common building blocks in power management ICs. CMOS-based LDOs such as the R1515 series draw exceptionally low quiescent current from the source, making them ideal for battery-powered or always-on industrial sensor applications. Key features include a wide 36 V maximum input tolerance for direct operation from industrial 24 V buses, low quiescent current enabled by CMOS architecture, built-in thermal shutdown protection, internal short-circuit current limiting, and a fixed output that eliminates external feedback resistors. The 50 mA rated current is sufficient for low-power analog, microcontroller, and sensor bias rails in noisy industrial environments. The R1515 uses a CMOS pass element with a precision bandgap reference and integrates a fold-back protection circuit and an over-temperature shutdown circuit that disables the output when the junction temperature exceeds the safe limit. Because the part operates from inputs up to 36 V and ambient temperatures from -40 °C to +105 °C, it tolerates regulated and transient 24 V industrial supplies in factory automation, HVAC control, and building-automation modules. Typical applications include 24 V-to-3.0 V post-regulation for microcontroller cores in PLCs and industrial sensors, 12 V-to-3.0 V bias rails in metering and white-goods subsystems, battery-powered IoT sensor nodes, and as a post-regulator downstream of a switching converter to remove switching ripple from low-current analog supply pins. Designers should place the input and output capacitors as close to the IC pins as possible and verify thermal performance because the SOT-89-5 package dissipates heat primarily through its large center pad; the drop must be evaluated for each application's worst-case VIN and load combination. This page synthesizes distributor pricing, pin-compatible alternative candidates, and application-specific design notes that go beyond what is published in the standalone manufacturer datasheet.
R5460N235AA-TR-FE - 2-Cell Li-Ion Battery Protector | Nisshinbo
The Nisshinbo Micro Devices R5460N235AA-TR-FE is a high-voltage CMOS protection IC designed for over-charge and over-discharge protection of rechargeable two-cell lithium-ion and lithium-polymer battery packs. The R5460N235AA-TR-FE integrates high-accuracy voltage detection, fixed delay timing, and low-power consumption in a 6-pin SOT-23 package, making it suitable for compact battery management designs where PCB space is at a premium. The device operates with an absolute maximum supply voltage of 10 V and a minimum operating voltage of 1.5 V, providing wide-margin monitoring for 2S Li-Ion packs (7.2 V to 8.4 V operating range). The -TR-FE suffix indicates tape-and-reel packaging with a lead-free, RoHS-compliant terminal finish. A lithium-ion battery protection IC is a specialized analog/mixed-signal device that continuously monitors cell voltages and disconnects the pack from the load or charger when unsafe conditions occur (over-charge, over-discharge, over-current, or short circuit). Within the broader battery management hierarchy, the R5460N235AA belongs to the secondary protection IC category, sitting one level below the battery management system (BMS) controller and working in conjunction with dual-MOSFET protection switches to provide redundant safety. The R5460x2xxxx Series employs CMOS process technology with on-chip高精度 voltage references to deliver factory-trimmed detection thresholds across the variant range. Key features include fixed over-charge detection voltage, fixed over-discharge detection voltage, ultra-low quiescent current in normal mode to extend battery shelf life, internal fixed delay timers for noise immunity (eliminating external RC networks), and CMOS output stages for driving external N-channel MOSFET disconnect switches. The 6-pin SOT-23 package enables reflow-compatible surface-mount assembly compatible with high-volume automated pick-and-place lines. Per the manufacturer datasheet, the device does not require an external sense resistor for basic voltage protection, simplifying BOM cost. Typical applications include 2-cell Li-Ion and Li-Polymer battery packs for power tools, portable medical devices, e-bike auxiliary systems, IoT backup battery modules, handheld instrumentation, and consumer electronics requiring 7.2 V to 8.4 V nominal battery rails. The wide 1.5 V to 10 V operating range also enables use in 2S lithium-iron-phosphate (LiFePO4) packs with adjusted threshold variants in the same family. Design considerations include placing input decoupling (1 microfarad ceramic minimum) directly at the VDD pin, using low-RDS(on) dual N-channel MOSFETs for the CO and DO switches, and observing the absolute maximum ratings to prevent latch-up. The 6-pin SOT-23 requires careful thermal pad design when used near the upper operating voltage limit. This page synthesizes distributor availability from Newark, DigiKey Marketplace, Rochester Electronics, and authorized partners, plus comparison data against R5460x2xxxx family variants and competing 2-cell Li-Ion protectors from onsemi and other manufacturers, providing engineering context not aggregated in the standalone manufacturer datasheet.
R5480K260CL-TR - 1-Cell Li-ion Battery Protector | Nisshinbo
The Nisshinbo Micro Devices R5480K260CL-TR is a 1-cell Li-ion / Li-polymer battery protection IC in a compact SOT-style surface-mount package with an exposed pad, featuring an external RSENSE pin for high-accuracy over-current detection. The device integrates over-charge, over-discharge, excess-discharge current, and excess-charge current detection in a single chip, along with a 0V-battery charge inhibition function. The R5480K260CL-TR ships on Tape and Reel with a 4.0V over-charge detection threshold (the "260" code in the MPN denotes this threshold), a high-accuracy reference, and ultra-low quiescent current in standby mode to preserve cell capacity during long storage. A Li-ion battery protection IC is a specialized analog/mixed-signal integrated circuit that monitors a single lithium-ion or lithium-polymer cell and removes it from the charger or load when its voltage or current exceeds manufacturer-defined safety thresholds. It belongs to the broader category of battery management ICs (BMICs) — specifically secondary protection and pack-level safety devices in the power management family. These ICs sit between the protection MOSFETs and the battery cell, enforcing the JEDEC-aligned 4.2V/4.3V/4.4V per-cell over-charge limits and the 2.5V over-discharge floor that prevent thermal runaway, plating, and capacity loss in Li-ion chemistries. Key features of the R5480K260CL-TR include: (1) an externally programmable RSENSE input that lets designers set current trip points via a low-value sense resistor rather than internal trimming; (2) low supply current consumption after detection events to extend shelf and operating life; (3) high detection accuracy achieved by a precision bandgap reference; (4) a 0V-battery charge-inhibition function that prevents recharging deeply depleted or shorted cells; and (5) a small outline package suitable for high-density battery PCBs in ultra-thin wearable and IoT form factors. Architecturally, the R5480K series uses a CMOS process with on-chip comparators and a bandgap reference, plus driver outputs that gate external N-channel protection MOSFETs in the pack's charge/discharge path. The exact detection voltages (over-charge, over-discharge, over-current) are laser-trimmed at the factory and selected by ordering code; the "260" suffix in this MPN indicates the 4.0V (or per Nisshinbo's exact threshold) over-charge trip, distinguishing it from siblings at 4.1V, 4.2V, 4.3V, 4.4V. Typical applications for the R5480K260CL-TR include 1S Li-ion battery packs for wearables, true-wireless-earbud charging cases, IoT sensor boards, low-cost power banks, Bluetooth trackers, and single-cell backup batteries in industrial metering. The combination of low Iq and small package makes it suited to devices that sit idle for months between activations. When designing with this IC, follow the manufacturer's datasheet guidance on RSENSE resistor selection, MOSFET gate resistor sizing, and decoupling near the VDD pin. Also observe the absolute maximum rating on VDD and verify thermal performance with the chosen MOSFET dissipation during short-circuit events. This page synthesizes distributor pricing, same-family alternatives, and practical design notes not found in the manufacturer datasheet alone.
R9A02G011 - USB PD 3.1 Controller, Type-C PMIC | Renesas
The Renesas R9A02G011 is a USB Power Delivery (PD) controller implementing the Universal Serial Bus Power Delivery Specification Revision 3.1 and USB Type-C Cable and Connector Specification Release 2.1, supporting USB PD 3.2 features including Programmable Power Supply (PPS) and Adjustable Voltage Supply (AVS). The device is available in a 32-pin HVQFN (5x5 mm) package or a 42-ball VBGA (3.6x3.1 mm) package, providing flexibility for space-constrained consumer electronics designs such as wall adapters, travel chargers, hub/downstream-facing ports (DFPs), and Type-C alternate-mode hosts. A USB PD controller is a protocol-handling IC that negotiates higher voltage and current contracts (up to 100 W with Extended Power Range, EPR) over the USB Type-C VBUS conductor using BMC-encoded communication on the CC (Configuration Channel) lines. The R9A02G011 sits between the application host MCU and the USB-C connector, translating hardware-level USB-C attach/detach and PD messaging into I2C / GPIO interactions with the system, while controlling external VBUS FETs, VCONN switch, and discrete protection circuitry for safe power negotiation. Key features include integrated USB Type-C Alternate Mode support for DisplayPort and Thunderbolt tunneling, Electronically Marked Cable (eMarker) read/write capability, BC 1.2 legacy charging support, integrated VBUS discharge and cable compensation, hardware autonomous PD state machine for minimal host MCU firmware load, and built-in protections including OVP, OCP, and thermal shutdown. The device requires an external host MCU for policy management and alternate-mode switching decisions. Architecturally, the R9A02G011 implements a hardware CC logic block, a PD protocol engine, an integrated PHY for BMC transmission on CC1/CC2, and policy routing through an I2C slave interface. This partition lets the system MCU focus on application logic while the controller handles real-time PD timing, attach detection, and physical-layer compliance. Typical applications include USB-C wall chargers, multi-port charging hubs, notebook and tablet docking stations, smartphone fast-charge adapters, and any Type-C source/sink/DRP port requiring USB PD 3.1 compliance. The wide protocol support makes it suitable for both consumer adapters and industrial docking equipment. When designing with this part, ensure proper VBUS FET sizing for the highest advertised current (e.g. 5 A for 100 W EPR), a 1 uF CC-line bypass per USB Type-C spec, and consult the Renesas Rtk-251-drpevb evaluation board schematic for reference VBUS path protection. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, including cross-references against competing USB PD controllers and recommendations for evaluation hardware.
REF102AP - 10V Precision Voltage Reference 2.5ppm/C | TI
The Texas Instruments REF102AP is a 10V precision series voltage reference with a maximum temperature drift of 2.5 ppm/C, fixed output accuracy of plus or minus 0.1 percent (plus or minus 2.5 mV), and 10 mA output current capability, housed in an 8-pin PDIP (DIP-8) through-hole package. A precision series voltage reference is a type of shunt-free, three-terminal reference circuit that maintains a highly stable output voltage independent of input supply variations, load changes, and temperature. It sits within the broader hierarchy of voltage reference ICs under power management semiconductors and serves as the accuracy anchor for data converters, instrumentation amplifiers, and metrology circuits. Unlike bandgap references, the REF102 achieves its precision using a buried Zener reference without an internal heater, delivering lab-grade stability in a standard through-hole package. Key features include a very low drift of 2.5 ppm per degree Celsius maximum over the industrial temperature range (A grade), excellent long-term stability of 5 ppm per 1000 hours typical, outstanding line regulation of 1 ppm/V maximum, and load regulation of 10 ppm per mA maximum. Output noise is a low 5 uVpp typical at 10 Hz, and the wide supply range extends up to 36 V DC, giving designers generous headroom above the 10 V output. Technically, the REF102 uses a laser-trimmed Zener-based architecture. Laser trimming at wafer level establishes the 10 V output and the tight drift specification without ovens or chopper stabilization, so warm-up time and power consumption are minimal compared with heater-stabilized references. This makes the part well suited for systems that must be accurate immediately after power-up. Typical applications include A/D and D/A converter reference inputs in data acquisition systems, precision instrumentation and calibration equipment, test and measurement front ends, and transducer excitation where a stable 10 V source directly sets system gain accuracy. When designing with the REF102AP, allow adequate supply headroom and add bypass capacitance close to the input and output pins; series references oscillate with poor decoupling or capacitive loading at the output. This page synthesizes distributor pricing, drop-in same-family alternatives, design notes, and an A/D-converter-focused application guide not found in the manufacturer datasheet.
REF102AU - 10V Precision Voltage Reference, 2.5ppm/°C | Texas Instruments
The Texas Instruments REF102AU is a precision 10V series voltage reference IC delivering ±0.1% initial accuracy and a maximum temperature drift of 2.5 ppm/°C, housed in an 8-pin SOIC (D) package. It supplies up to 10 mA of output current from a single 11.4V to 36V supply, with extremely low sensitivity to line and load variations. A series voltage reference (also called a shunt-mode or series-mode voltage reference) is a precision analog building block that maintains a stable DC output voltage regardless of supply ripple, load current changes, or temperature drift. Within the broader power-management hierarchy, a voltage reference sits above a generic voltage regulator and below a system-level power supply: regulators provide bulk rails, while references provide the calibration-grade voltage against which ADCs, DACs, and weighing scales are measured. The REF102AU belongs to TI's Burr-Brown precision analog lineage, where the output is trimmed at the wafer level using laser or zener-zap techniques to reach sub-ppm-per-degree stability. Key features include a noise voltage of 5 µVPP (0.1 Hz to 10 Hz, the so-called peak-to-peak low-frequency noise band), a load regulation of 10 ppm/mA typical, and a long-term stability of 5 ppm/1000 hrs. The device also integrates a noise-reduction pin (NR) where an external capacitor forms a low-pass filter to attenuate broadband thermal noise. Industrial-grade operating temperature is -25 °C to +85 °C, with MSL Level-2-260 °C-1 YEAR moisture sensitivity. At the circuit level, the REF102AU uses a buried-zener bandgap architecture followed by a precision op-amp output buffer, allowing the reference to source and sink current while preserving accuracy. The output can be trimmed ±100 mV via the Trim pin without measurable drift penalty. This combination makes the part attractive where stability over time and temperature matters more than absolute cost. Typical applications include 16-bit and higher-precision ADC/DAC reference rails, industrial weighing scales, digital multimeters, laboratory calibrators, and precision current-loop (4-20 mA) transmitters. Medical imaging front-ends and seismic-data acquisition systems also benefit from its low 1/f noise. When designing with this part, always place a 1 µF to 10 µF low-ESR tantalum or ceramic bypass capacitor on the output and a 1 µF capacitor on the NR pin to achieve the rated noise performance. Do not exceed 36 V on the input, and decouple the supply within 5 mm of the IN pin to suppress line-induced noise. This page combines distributor pricing, drop-in alternatives, and practical design notes not collected in any single distributor listing, providing unique value beyond a raw datasheet PDF.
REF192ESZ - 2.5V Precision Micropower Voltage Reference | Analog Devices
The REF192ESZ is a precision, micropower, low dropout voltage reference from Analog Devices, part of the REF19x series. It provides a fixed 2.5V output with an initial accuracy of ±0.08% and a temperature coefficient as low as 5 ppm/°C (grade A). The device operates from an input voltage range of 2.5V to 15V, with a typical quiescent current of only 45 µA, making it ideal for battery-powered and portable applications. It is available in an 8-lead SOIC package (SOIC-8) and is specified for the industrial temperature range of -40°C to +85°C. A voltage reference is a precision electronic circuit that produces a constant output voltage regardless of load, supply voltage, or temperature. It is a fundamental building block in analog and mixed-signal systems, providing a stable reference for ADCs, DACs, comparators, and other precision circuits. Voltage references are categorized into series and shunt types; the REF192 is a series reference, meaning it operates like a low-dropout regulator, sourcing current to the load while maintaining a precise voltage. This makes it more efficient than shunt references, especially in low-power designs. Key features of the REF192ESZ include its low dropout voltage of 200 mV (typical) at 30 mA output current, which allows it to regulate from a 2.5V supply with minimal headroom. The device also offers excellent line and load regulation, with typical values of 10 ppm/V and 20 ppm/mA, respectively. The patented temperature drift curvature correction circuit and laser-trimmed thin-film resistors ensure high accuracy and stability over temperature. The REF192ESZ is available in tape and reel packaging (REF192ESZ-REEL7) and is RoHS compliant. Technically, the REF192 uses a bandgap core with curvature correction, achieving a temperature coefficient as low as 5 ppm/°C. The output is buffered by a low-noise amplifier, providing a low output impedance and the ability to source up to 30 mA. The device also includes a sleep mode that reduces quiescent current to less than 2 µA, making it suitable for power-cycled systems. The SOIC-8 package is widely used and easy to solder, with a thermal resistance of approximately 150°C/W. Typical applications include precision data acquisition systems, portable instrumentation, battery-powered devices, and industrial process control. The REF192ESZ is also used in automotive electronics, medical devices, and as a reference for analog-to-digital converters (ADCs) and digital-to-analog converters (DACs). Its low power consumption and high accuracy make it a preferred choice for battery-operated equipment where power efficiency is critical. When designing with the REF192ESZ, it is important to place a 1 µF to 10 µF bypass capacitor on the output to ensure stability and reduce noise. The input should also be bypassed with a 0.1 µF capacitor. For best performance, keep the load current within the specified range and avoid excessive capacitive loading, which can cause oscillation. The device is designed for easy integration, but proper PCB layout is essential to minimize parasitic inductance and capacitance.
REF1930 - 3V Dual-Output Voltage Reference | Texas Instruments
The Texas Instruments REF1930 is a precision, low-power, dual-output series voltage reference delivering a fixed 3V VREF output plus a 1.5V VREF/2 output with ±0.1% initial accuracy and up to 20 mA output current capability. It comes in the compact 5-pin SOT-23-THIN (DDC) package and operates from -40C to +125C. A voltage reference is a precision circuit that produces a stable output voltage independent of supply variation, load changes, and temperature. It is a fundamental building block of analog and mixed-signal systems, providing the conversion reference for ADCs, DACs, and comparators. References are either shunt or series types; the REF1930 is a series reference, operating like a low-dropout regulator that sources current to the load while holding a precise voltage. Key features include ±0.1% initial accuracy, a dual-output architecture (VREF and VREF/2) that eliminates a separate mid-supply bias divider, low quiescent current suitable for battery-powered portable instruments, and 20 mA sourcing capability for driving ADC reference inputs and op-amp bias networks. The REF1930 uses a bandgap-based architecture with internal trimming to minimize initial error. The dual-output design is particularly valuable in single-supply systems where bipolar input signals must be biased around a mid-rail common-mode point at an ADC input. The SOT-23-THIN package suits space-constrained portable designs. Typical applications include ADC input biasing, portable instrumentation, data acquisition systems, battery monitoring, and industrial process control front ends. Design tip: decouple both outputs adequately with ceramic capacitors, and limit DC loading on the VREF/2 output to preserve its accuracy.
REF196GSZ - 3.3V Precision Series Voltage Reference | Analog Devices
The Analog Devices REF196GSZ is a precision micropower, low dropout series voltage reference delivering a fixed 3.3 V output with ±0.3% initial accuracy and up to 30 mA of output current, housed in an 8-pin SOIC (SOIC-8) surface-mount package. A series voltage reference is a three-terminal (or more) precision circuit that regulates a stable reference voltage from a higher, possibly noisy supply rail, unlike shunt references which require an external bias resistor and sink current continuously. In the system hierarchy, the voltage reference sits within power management and analog signal chain design, feeding precision ADCs, DACs, comparators, and sensor excitation circuits where absolute accuracy of the converter transfer function depends directly on reference stability. Key features of the REF196 include very low quiescent power consumption typical of the micropower REF19x family, low dropout operation that allows the reference to maintain regulation with minimal headroom between the supply rail and the 3.3 V output, and load capability of up to 30 mA - enough to reference multiple converters or drive a resistive load directly. The G-grade suffix specifies the ±0.3% initial accuracy grade and the commercial temperature range package option in the SOIC-8 outline. According to Analog Devices, the REF19x series uses a patented temperature drift curvature correction circuit combined with laser trimming of highly stable thin-film resistors to achieve very low temperature coefficient and high initial accuracy. Curvature correction cancels the second-order bandgap error term, while laser trimming removes resistor-ratio mismatch, giving the device accuracy that would otherwise require system-level calibration. Typical applications include precision data-acquisition systems referencing successive-approximation and sigma-delta ADCs, battery-powered portable instruments where micropower supply current extends battery life, industrial transmitters and process-control modules, and digital multimeters or handheld test equipment requiring a stable 3.3 V full-scale reference. When designing with the REF196, provide proper input and output decoupling close to the pins and verify dropout margin at the minimum expected supply voltage and full load current to maintain regulation. This page adds value beyond the manufacturer datasheet by synthesizing distributor pricing, drop-in family alternatives, comparison tables, and practical design notes in one quotable reference. Pricing shown is as of 2026-10-21.
REF196GSZ-REEL7 - 3.3V Precision Voltage Reference | Analog Devices
The Analog Devices REF196GSZ-REEL7 is a precision micropower, low dropout series voltage reference delivering a fixed 3.3V output with ±0.3% initial accuracy and up to 30 mA output current capability, housed in an 8-pin SOIC package (0.154 inch, 3.90 mm width). A series voltage reference is a voltage reference IC that sources current to the load from the supply rail and regulates the output against a precision internal bandgap, unlike shunt references which require an external resistor. Voltage references form the foundation of the analog signal chain: an ADC, DAC, or sensor bridge is only as accurate as the reference driving it. The REF196 belongs to the REF19x family of bandgap references, positioning itself at the micropower end of the broader power management IC hierarchy. Key features include the patented temperature drift curvature correction circuit and laser trimming of highly stable thin-film resistors, which together achieve very low temperature coefficient and high initial accuracy according to the Analog Devices product page. The low dropout characteristic allows the device to maintain regulation with input voltage only marginally above the 3.3V output, making it well suited to battery-powered systems. A SLEEP pin (pin 3) enables micropower shutdown for battery-operated designs, and output current up to 30 mA permits direct powering of low-current analog circuits without an external buffer. Technically, the bandgap core is laser-trimmed at wafer level, and curvature correction compensates the classic parabolic drift of bandgap references across the industrial temperature range. As a series topology it also provides inherent line and load regulation plus output capacitor stability without a limiting resistor. Typical applications include 12-bit and 16-bit ADC reference inputs, battery-powered portable instrumentation, industrial 4-20 mA transmitters, and precision sensor excitation, where its micropower supply current and low dropout directly extend battery life. Design consideration: use a 0.1 uF input capacitor and 10 uF output capacitor per the datasheet typical application, and drive the SLEEP pin low to keep the reference active. This page synthesizes distributor pricing, drop-in family alternatives, pinout data, and practical design notes not consolidated in the manufacturer datasheet.
REF200AU - Dual 100µA Current Source/Sink | Texas Instruments
The REF200AU from Texas Instruments is a precision dual current source and current sink integrated circuit in an 8-pin SOIC package. It provides two independent 100 µA current outputs that are completely floating, requiring no power supply or ground connections. This unique architecture allows the REF200AU to be used as a building block in a wide variety of analog circuits, including sensor excitation, biasing, and current-mode signal processing. A current source is an electronic circuit that delivers a constant current regardless of the voltage across its terminals, within its compliance range. The REF200AU is a precision current source that maintains a stable 100 µA output with an accuracy of ±0.5% and a temperature coefficient of ±25 ppm/°C. It also includes a current mirror, which can be used to replicate or scale currents. The device operates over a wide voltage compliance range of 40V, making it suitable for both low-voltage and high-voltage applications. Key features of the REF200AU include its high accuracy, low temperature drift, and complete floating operation. The two current sources can be pin-strapped in series or parallel to obtain currents of 50 µA, 100 µA, 200 µA, 300 µA, or 400 µA. This flexibility allows designers to generate a wide range of reference currents without additional components. The current mirror can also be used to create current sources with values determined by external resistors. The REF200AU is fabricated using a precision bipolar process, ensuring excellent matching between the two current sources. The device operates over a temperature range of -25°C to +85°C, making it suitable for industrial and commercial applications. The SOIC-8 package is compact and suitable for automated assembly. Typical applications for the REF200AU include sensor excitation for RTDs and thermistors, biasing of operational amplifiers and comparators, current-mode signal conditioning, and precision current references for data converters. Its floating nature makes it ideal for use in circuits where a ground-referenced supply is not available. When designing with the REF200AU, it is important to ensure that the voltage across the device does not exceed the 40V compliance limit. The current sources are floating, so the voltage can be applied in either polarity, but the total voltage across the device must be within the specified range. Additionally, the output current is fixed at 100 µA per source, so external circuitry must be designed to handle this current level.
REF2033AIDDCR - 3.3V & 1.65V Dual Voltage Reference | TI
The Texas Instruments REF2033AIDDCR is a low-drift, low-power series voltage reference with dual outputs providing 3.3V (VREF) and 1.65V (VREF/2), ±0.05% maximum initial accuracy, 8 ppm/°C maximum temperature drift, and 20 mA output current capability, housed in a 5-pin SOT-23-THIN (DDC) package. A series voltage reference is a precision circuit that maintains a stable, accurate output voltage independent of input supply variations, load changes, and temperature. Within the power management and data-converter signal chain hierarchy, it sits upstream of ADCs and DACs, establishing the measurement scale that determines system accuracy. The REF20 family extends this concept by providing a second output at exactly half the reference voltage, which is convenient for biasing bipolar signals in single-supply systems. Key features include two outputs (VREF and VREF/2) for single-supply analog design, excellent 8 ppm/°C (maximum) drift from -40°C to +125°C, high ±0.05% maximum initial accuracy, a 20 mA output current capability, and an enable pin for power management. Quiescent current is a low 0.36 mA (typical), making the device suitable for portable and battery-powered instruments. The dual-output architecture pairs a precision bandgap-based series reference with an accurate buffer that tracks VREF/2. This tracking is significant: in single-supply ADC applications, bipolar input signals are biased at mid-scale using VBIAS, and any mismatch between VREF and VBIAS directly appears as offset error. The REF2033 minimizes this error by generating both voltages on the same die. Typical applications include single-supply ADC reference and bias generation, data acquisition systems, portable instrumentation, and industrial sensor signal conditioning where a mid-supply bias is required. When designing, ensure the input supply stays between 3.32V and 5.5V with adequate headroom above the 3.3V output, and use a load capacitor per the manufacturer datasheet recommendations to maintain stability. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet alone.
REF3030AIDBZR - 3V 0.2% 50ppm/C Reference | TI
The Texas Instruments REF3030AIDBZR is a precision, low-power, low-dropout series voltage reference providing a fixed 3V output with ±0.2% initial accuracy and 50 ppm/°C maximum temperature drift in a 3-pin SOT-23-3 package. It sources up to 25 mA of load current while drawing only 42 µA quiescent current (typical), making it ideal for battery-powered and space-constrained designs. A voltage reference is a foundational building block in analog and mixed-signal systems: it establishes the stable benchmark voltage from which ADCs and DACs convert signals, comparators make decisions, and precision amplifiers operate. The REF3030AIDBZR belongs to the REF30xx family of CMOS series (bandgap) voltage references, a subset of the broader voltage reference category that includes shunt and series topologies, ultimately within power management ICs. Key features include low dropout operation with input voltages as low as 3.05V, enabling use directly after low-voltage LDOs or one-cell-lithium rails; 50 ppm/°C max drift ensuring stable output from -40°C to +125°C; and low 42 µA quiescent current that extends battery life in portable instruments. The CMOS architecture minimizes supply sensitivity and keeps line and load regulation tight. Technically, the device uses a CMOS bandgap core whose stable voltage is buffered by an output amplifier, achieving approximately 50 µVrms of output noise from 10 Hz to 10 kHz. Internal compensation ensures stability with capacitive loads up to 10 µF, and the series topology needs only 1 µF input decoupling in most designs. Typical applications include precision data-acquisition references for ADCs in battery-powered handheld meters, sensor-node systems, industrial process control, and comparator/op-amp bias rails in portable instrumentation. Design tip: place a 0.1 µF bypass capacitor close to the output pin and a 1 µF capacitor on the input; maintain VIN of at least 3.05V to keep the part in regulation. Pricing starts around $0.13 at volume as of 2026-08-30.
REF3030AIDBZT - 3V 50ppm/°C Low-Dropout Voltage Reference | Texas Instruments
The Texas Instruments REF3030AIDBZT is a precision, low-power, low-dropout series voltage reference IC delivering a fixed 3.0 V output with ±0.2% initial accuracy and a maximum temperature drift of 50 ppm/°C, housed in a 3-pin SOT-23-3 surface-mount package. It supports up to 25 mA of output current and operates from a maximum quiescent current of 50 µA, making it well suited to battery-powered and portable designs. The reference family is specified over the -40 °C to +125 °C industrial temperature range and ships on 7-inch tape-and-reel packaging. A voltage reference IC is a precision analog building block whose function is to generate a stable, temperature-invariant DC voltage used as the absolute scale against which ADC conversions, DAC outputs, sensor signals, and power-supply thresholds are measured. Voltage references sit within the broader power-management and signal-chain hierarchy: voltage reference → series/shunt reference → power management IC → semiconductor. In precision data-acquisition and instrumentation systems, the reference's initial accuracy and temperature drift directly bound the achievable system accuracy, which is why low-drift parts such as the REF3030AIDBZT are favored over on-chip MCU references. Key differentiating features of the REF3030AIDBZT include 50 ppm/°C maximum drift, 25 mA output current capability from a SOT-23-3 footprint, 50 µA maximum quiescent current, and operation with no required output load capacitor (although it is stable with any capacitive load). The reference offers a low dropout suitable for direct regulation from low-voltage rails, and the SOT-23-3 package suits space-constrained PCB layouts where larger SOT-23-5 or SOIC-8 references will not fit. Architecturally, the REF3030AIDBZT uses a CMOS bandgap core trimmed at wafer level to achieve ±0.2% initial accuracy and tight temperature drift. The 25 mA output is enabled by an integrated series pass element that also defines the dropout characteristic. Compared with shunt-mode references (e.g., LM4040), the series topology avoids the additional series resistor and the associated quiescent-current overhead, which is critical in low-power designs. Typical applications include ADC/DAC reference rails in portable data loggers, battery-powered instrumentation, industrial sensor signal conditioning, threshold detectors, and precision comparators. The low 50 µA quiescent current makes the part especially attractive for IoT edge nodes and remote sensor transmitters that spend long periods in sleep. When designing with the REF3030AIDBZT, observe the absolute maximum input voltage rating, bypass the supply pin with a 0.1 µF ceramic capacitor placed close to the IC, and verify that the load current does not exceed 25 mA. The part is stable with any capacitive load including zero, simplifying the output filter network.
REF3425IDBVR - 2.5V, 6ppm/C Series Voltage Reference | TI
The Texas Instruments REF3425IDBVR is a low-drift, low-power series voltage reference delivering a fixed 2.5V output with ±0.05% initial accuracy and 6 ppm/°C maximum temperature drift, housed in a 6-pin SOT-23 (DBV) package rated from -40°C to +125°C. A series voltage reference is a type of precision voltage reference IC that sources current to the load and requires an input supply greater than the output, unlike shunt references which need an external bias resistor. Within the power-management hierarchy, the series voltage reference sits alongside linear regulators as a precision analog building block, providing a stable known voltage from which ADCs, DACs, and analog sensors derive their measurement accuracy. The output accuracy of the entire data-conversion chain is ultimately limited by this reference. Key features of the REF3425 include ultra-low 6 ppm/°C temperature drift for measurement stability across temperature, initial accuracy of ±0.05% (±1.25 mV), and a typical operating current below 95 µA - making it suitable for battery-powered portable equipment. Output noise is a very low 3.8 µVp-p/V, and the device can source up to 10 mA while maintaining output voltage stability. Low output-voltage hysteresis and low long-term drift further improve system reliability over the product lifetime. The REF3425 is fabricated on a precision CMOS process. CMOS architecture minimizes quiescent power while preserving reference integrity, and the device includes an enable (EN) pin for system power sequencing and further standby-power reduction. According to the TI datasheet, the REF34xx family offers pin-to-pin replacement for MAX6071 and ADR3425, giving designers a second source with enhanced specifications in the same small SOT-23 footprint. Typical applications include high-resolution data acquisition systems feeding ADCs such as the ADS1287 and ADS1112, DAC biasing for parts like the DAC8802, portable and battery-powered instrumentation where 95 µA quiescent current extends battery life, and factory automation sensor excitation requiring 6 ppm/°C drift performance. Design considerations: ensure the input supply provides adequate headroom above 2.5V and place a 0.1 µF to 1 µF ceramic capacitor at both input and output pins close to the device. The enable pin should not be left floating in noise-critical designs. This page synthesizes distributor pricing, verified drop-in alternatives, comparison tables, and practical design notes not found in the manufacturer datasheet, giving engineers a single citable resource for the REF3425IDBVR.
REF5030AIDGKR - 3V 3ppm/C Precision Voltage Ref | Texas Instruments
The Texas Instruments REF5030AIDGKR is a low-noise, very low-drift, wide-VIN precision series voltage reference delivering a fixed 3V output with 0.05% initial accuracy (A grade) and up to 10 mA output current capability, housed in an 8-pin VSSOP (DGK) package rated from -40C to +125C. A voltage reference is a component that produces a constant output voltage independent of load current, input voltage, and temperature. It is a fundamental building block of analog and mixed-signal systems, supplying the reference used by ADCs, DACs, comparators, and sensor excitation circuits. Voltage references divide into series and shunt types; the REF5030 is a series reference that operates like a precision linear regulator, both sinking and sourcing current while holding a precise output. Key features include a maximum temperature coefficient of 3 ppm/C, 0.05% initial accuracy, output noise of 3 uVpp/V (typical), and a wide input range of 3.2V to 18V. The device consumes about 1.2 mA of quiescent current, making it suitable for battery-powered instrumentation, while the 10 mA sink/source capability allows driving multiple converter reference pins. A TRIM/NR pin supports output trimming and noise reduction with an external capacitor. The REF5030 uses a bandgap-based architecture with precision wafer-level trimming to achieve high accuracy and low drift. It belongs to the REF50xx family (2.5V, 3V, 4.096V, 5V options), sharing pinout and footprint across output voltages for design reuse. Excellent line and load regulation makes it robust against supply and load transients. Typical applications include precision data acquisition systems with high-resolution ADCs such as the ADS1262, industrial process-control transmitters, medical instrumentation front ends, and portable battery-powered test equipment where reference accuracy directly determines conversion accuracy. When designing with the REF5030AIDGKR, use 0.1 uF to 10 uF ceramic decoupling capacitors on input and output. The output capacitor is required for stability per the TI datasheet, and load current should stay within the 10 mA maximum to preserve accuracy.
REF_WLC_TX15W_M1 - 15W Qi2 Wireless Charging Reference
The Infineon Technologies REF_WLC_TX15W_M1 is a form-factor-optimized wireless charging transmitter reference design delivering up to 15 W through the Qi2 Magnetic Power Profile. It combines an Infineon WLC1115 wireless transmitter controller, integrated USB-PD and DC-DC functions, and an OPTIGA Trust Charge authentication device. The solution supports 15 W Qi2 MPP charging and remains compatible with 5 W Qi Basic Power Profile receivers. A wireless charging transmitter reference design is a complete evaluation platform used to develop and verify the power-transfer, communication, control, and protection functions required for Qi-compatible charging products. In the broader product hierarchy, wireless power transmitter solutions sit within wireless power systems, power-management electronics, and semiconductor-based development platforms. REF_WLC_TX15W_M1 provides a practical implementation reference rather than a simple discrete component. The verified design features identify the board as a programmable 15 W Qi2 MPP transmitter with an optimized form factor of less than 43 mm diameter. It uses WLC1115 as the wireless transmitter controller and includes USB Power Delivery, DC-DC conversion, and secure wireless-charging authentication. The board also supports ModusToolbox code examples, helping developers configure the transmitter and accelerate firmware integration. Qi2 MPP adds magnetic alignment guidance for compatible receivers, while backward support for Qi BPP allows 5 W operation with receivers that do not implement MPP. The integrated authentication device, identified in Wireless Power Consortium material as SLS32AIA020U3, adds a security-oriented function to the transmitter platform. Infineon describes the design as highly integrated and optimized for compact form factors. Typical uses include development of Qi2 phone and accessory chargers, USB-C wireless power products, compact embedded charging modules, and Qi2-compatible receiver testing. The board is useful for prototyping, firmware evaluation, power-transfer validation, and reference-design adaptation. It is not merely a generic 15 W power board; its value lies in the combination of Qi2 MPP, USB-PD, DC-DC conversion, authentication, and software support. For system integration, developers should use the manufacturer’s hardware design guidance and current board documentation rather than treating the reference board as a production-certified product. The verified material does not provide a complete electrical schematic, pinout, input-current limit, efficiency curve, operating-temperature range, or compliance declaration. Those values require confirmation from the relevant Infineon documentation before a production design is released. This page synthesizes the verified Infineon product description, solution-brief data, Wireless Power Consortium listing, and distributor information into an engineering-oriented overview. It emphasizes the board’s verified Qi2 MPP, 15 W output, 5 W BPP compatibility, less-than-43-mm form factor, WLC1115 controller, integrated USB-PD and DC-DC functions, and security-device role. Manufacturer documentation remains the authority for final electrical, mechanical, thermal, firmware, and compliance decisions.
REG104GA-3.3 - 1A, 15V LDO Regulator 3.3V Fixed | Texas Instruments
The Texas Instruments REG104GA-3.3 is a 1-A, 15-V, low-dropout (LDO) voltage regulator with active-high enable, delivering a fixed 3.3V output in a 6-pin SOT-223 (DCQ) package with tab. It uses a DMOS pass-element topology that provides significantly lower dropout voltage and better transient response than previous bipolar LDO designs. The device is specified for -40C to +85C operation and is qualified for industrial and commercial environments. An LDO (low-dropout) linear regulator is a type of voltage regulator that maintains a stable DC output voltage even when the input-to-output voltage differential approaches the pass element's saturation limit. LDOs belong to the broader family of linear regulators, which in turn fall under voltage regulators and ultimately power management ICs. Because LDOs dissipate excess voltage as heat rather than switching it, they add no high-frequency switching noise to the output - making them the preferred choice for noise-sensitive analog and mixed-signal power rails. The REG104GA-3.3 delivers up to 1A of output current from a wide input range up to 15V (with 3.3V fixed output) while consuming low quiescent current. Its DMOS pass element gives it a low dropout typical for the topology, enabling 3.3V regulation from inputs as low as approximately 4.0V at full load. Internal protection includes current limit and thermal shutdown. The 6-pin SOT-223 package provides a low thermal resistance path through the exposed tab, allowing reliable 1A operation with adequate copper pad area. Typical applications include point-of-load regulation after a switching converter, USB and embedded system 3.3V rails, industrial sensor and PLC modules, and post-regulation for noise-sensitive analog blocks such as ADCs and DACs. Compared to a buck regulator at the same node, the REG104 adds zero switching ripple at the cost of dissipating (VIN - 3.3V) * 1A as heat. When designing with this part, place input/output ceramic capacitors close to the pins per the datasheet, ensure the exposed tab has sufficient copper area for thermal dissipation, and respect the 15V absolute maximum input rating. The enable pin allows sequenced power-up in multi-rail systems.
REG104GA-3.3/2K5 - 1A 15V DMOS LDO, 3.3V Fixed, SOT-223-6 | TI
The Texas Instruments REG104GA-3.3/2K5 is a 1 A low-dropout (LDO) linear regulator with a fixed 3.3 V output, accepting input voltages up to 15 V in a SOT-223 (DCQ) package with 6 pins. It uses TI's DMOS pass-element topology, delivering a typical dropout voltage of 230 mV at 1 A and 3.3 V output, with 33 µVrms output noise and ±2% output accuracy. The SOT-223-6 footprint (5 + tab) provides efficient thermal dissipation through the tab land pattern. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is very close to the output voltage. Within the broader power management hierarchy, LDOs sit under linear regulators -> voltage regulators -> power management ICs (PMICs). LDOs are valued for low noise, simplicity, and fast transient response because no switching element is present, unlike a switching DC-DC converter. Key features of the REG104GA-3.3/2K5 include fast transient response, very low 33 µVrms output noise, ±2% maximum output accuracy, a low 1.7 mA quiescent ground-pin current at full load, and stable operation without an output capacitor. An active-high enable pin supports power-sequencing in multi-rail systems. Internal current limit and thermal shutdown protection safeguard the regulator under fault conditions. Architecturally, the REG104 employs a DMOS pass transistor rather than a conventional bipolar or PMOS device, achieving much lower dropout at high current while preserving analog-style low-noise operation. The reference and error amplifier are trimmed at the wafer stage for tight output accuracy. Typical applications include post-regulation after a switching DC-DC converter (FPGA, DSP, or microcontroller rails), industrial 5 V/3.3 V point-of-load supplies, battery-powered portable equipment, and noise-sensitive analog circuits. A heatsink or adequate copper area on the tab is required at high VIN-VOUT differential and full 1 A load. When designing with the REG104GA-3.3/2K5, observe the tab-land thermal layout guidelines in the datasheet, since at 1 A the device can dissipate 1-7 W depending on dropout. The enable pin allows inrush control via a small RC delay. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
REG104GA-3.3/2K5G4 - 1A, 3.3V SOT-223 LDO Regulator | Texas Instruments
The Texas Instruments REG104GA-3.3/2K5G4 is a 1 A low-dropout (LDO) linear regulator with a fixed 3.3 V output, housed in a 6-pin SOT-223 (DCQ) package. It operates from input voltages up to 15 V and uses a DMOS pass element that delivers low dropout and excellent transient performance compared with classic bipolar LDOs. The /2K5G4 suffix indicates a 2,500-piece tape-and-reel package with lead-free, RoHS-compliant lead finish. This part is targeted at fixed-rail applications where designers want a simple, robust post-regulator following a switching converter. A Low-Dropout (LDO) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage approaches the output voltage, by using a low-resistance pass transistor. LDOs sit within the broader hierarchy of linear regulators -> voltage regulators -> power management ICs -> semiconductors. Compared to switching regulators, LDOs introduce no switching noise onto the output rail, which is critical for analog and RF loads, at the cost of dissipating (VIN - VOUT) x IOUT as heat. Key features of the REG104GA-3.3/2K5G4 include a low ground-pin current that minimizes quiescent loss, a low-dropout voltage enabled by the DMOS pass element, internal current limiting and thermal shutdown for fault protection, and stable operation with low-ESR ceramic output capacitors. The fixed 3.3 V output removes the need for an external feedback divider and reduces external component count. The SOT-223 package provides a thermal pad that allows the tab to be soldered to a copper pour for improved power dissipation. Architecturally, the REG104 uses TI's DMOS topology, which delivers significantly lower dropout than the legacy PNP LDO family (e.g., REG1117) and improves PSRR at high frequencies. The reference, error amplifier, and DMOS pass device are integrated into a single die, with the die attached to the SOT-223 tab for direct thermal conduction to the PCB. Typical applications include post-regulation following a 5 V or 12 V switching converter for 3.3 V digital loads, USB/peripheral power, industrial 24 V -> 3.3 V intermediate rails, FPGA/CPLD auxiliary supplies, and microcontroller power rails in point-of-load designs. In each of these, the LDO cleans up ripple that the switching converter cannot fully reject at its switching frequency harmonics. When designing with the REG104GA-3.3/2K5G4, ensure adequate PCB copper area on the SOT-223 tab to keep junction temperature within the -40 C to +85 C operating range under worst-case load. Verify input-to-output differential and total power dissipation against the thermal resistance, since LDOs are most often derated thermally rather than electrically. This page synthesizes distributor pricing for the REG104GA-3.3/2K5G4, drop-in same-package alternatives from the same TI REG104 family, and practical design notes not found on the manufacturer product page.
RHP50000 - 12.5A Silent Switcher 2 Step-Down | Analog Devices
The RHP50000-CSL is a very small, low noise, monolithic step-down DC/DC converter from Analog Devices, capable of delivering up to 12.5A of output current from a 2.25V to 5.5V input supply. It employs the Silent Switcher 2 architecture with internal hot loop bypass capacitors to achieve both low EMI and high efficiency at switching frequencies as high as 5MHz. The device is available in an 18-lead TFQFN package with exposed pad, making it suitable for space-constrained, high-current power delivery in commercial space and other demanding applications. A step-down DC/DC converter, also known as a buck converter, is a type of switching regulator that efficiently converts a higher input voltage to a lower output voltage. Unlike linear regulators, which dissipate excess power as heat, buck converters use switching elements and energy storage components to achieve high efficiency, especially when the input-to-output voltage difference is large. The RHP50000 is a synchronous buck converter, meaning it uses two MOSFETs (high-side and low-side) to minimize conduction losses and eliminate the need for an external Schottky diode. This architecture is fundamental to modern power management ICs, enabling compact, high-current power solutions for processors, FPGAs, and other digital loads. Key features of the RHP50000 include its 12.5A output current capability, 2.25V to 5.5V input voltage range, and adjustable output voltage down to 0.5V. The Silent Switcher 2 architecture integrates bypass capacitors to reduce EMI, simplifying PCB layout and reducing the need for external filtering. The device operates at switching frequencies up to 5MHz, allowing the use of small inductors and capacitors, which reduces solution footprint. It also features a precision enable pin, soft-start, and power-good output for reliable power sequencing. Technically, the RHP50000 uses a current-mode control architecture with internal compensation, providing fast transient response and stable operation over a wide range of output capacitors. The integrated hot loop bypass capacitors minimize parasitic inductance in the switching loops, which is critical for achieving low EMI at high frequencies. The device also includes overcurrent protection, thermal shutdown, and undervoltage lockout to ensure robust operation in harsh environments. Typical applications include powering FPGAs, ASICs, and processors in commercial space systems, as well as high-current point-of-load (POL) converters in networking, telecommunications, and industrial equipment. The wide input range and high output current make it ideal for 5V or 3.3V rails that need to step down to core voltages like 1.2V or 0.9V. When designing with the RHP50000, pay careful attention to the input and output capacitor placement to minimize parasitic inductance. The AGND pin should be connected to the negative terminal of the output capacitor at the load for good load regulation. Use a solid ground plane and follow the layout guidelines in the datasheet to achieve the best EMI performance.
RP114N121B5-TR-FE - 300mA 1.25V LDO, SOT-23-5 | Nisshinbo
The Nisshinbo Micro Devices RP114N121B5-TR-FE is a CMOS-based low-dropout (LDO) linear voltage regulator with a fixed 1.25 V positive output, 300 mA continuous load capability, and a typical ripple rejection (PSRR) of 75 dB, housed in a 5-pin SOT-23-5 surface-mount package. It is part of the RP114x series optimized for hand-held communication equipment, where low quiescent current and excellent line/load transient response are essential for extending battery life. An LDO (Low-Dropout) linear regulator is a class of voltage regulator that maintains a tightly regulated output even when the input voltage approaches the output voltage, with dropout voltages often below a few hundred millivolts. Within the broader hierarchy, LDOs belong to linear regulators, which in turn fall under voltage regulators and ultimately the power management IC family. Unlike switching converters, LDOs introduce no switching noise but dissipate (VIN − VOUT) × IOUT as heat, making them ideal for low-power, noise-sensitive rails. The RP114N121B5-TR-FE integrates a low-on-resistance P-channel MOSFET pass element, a precision bandgap reference, and a chip-enable (CE) input for power sequencing. According to manufacturer data, the device supports a fixed output voltage tolerance of typically ±1% to ±2%, achieving high output voltage accuracy across the operating range. The PSRR of 75 dB at 1 kHz (per Nisshinbo description) ensures clean power rails immune to upstream switching noise, while the CMOS architecture keeps quiescent current low to maximize standby battery life in portable designs. Typical applications include 1.2 V core/auxiliary supplies in portable and wearable electronics, post-regulation stages for switching converters feeding RF or audio blocks, reference rails for ADCs and sensors, and any space-constrained design requiring a sub-2 V clean rail. The SOT-23-5 footprint suits hand-held communication equipment, IoT sensor nodes, and battery-powered instruments where board area is at a premium. Designers should observe input/output capacitor placement within a few millimeters of the IC pins to preserve stability and transient response, and confirm that VIN − VOUT remains within the SOA under worst-case load. When selecting, evaluate the trade-off between low noise (LDO advantage) and conversion efficiency (where a switching regulator would be preferable for large VIN-VOUT differential at high current). This page synthesizes distributor pricing, drop-in alternative cross-references, and practical design notes not found on the manufacturer product page alone. All specifications are sourced from the Nisshinbo RP114x datasheet and verified distributor data.
RP114N331D - 300mA 3.3V LDO Regulator, SOT-23-5 | Ricoh
The Ricoh RP114N331D is a low-voltage, low-dropout (LDO) linear regulator delivering a fixed 3.3V output at up to 300 mA from a 5-pin SOT-23-5 surface-mount package. It accepts input voltages up to 5.5 V and features a typical quiescent current of 50 uA, an integrated active-high chip enable (CE) input, and an internal discharge transistor that actively pulls the output low when the part is disabled. The marking code on the package is RBB, and the device is qualified halogen-free and RoHS-compliant. An LDO (Low-Dropout) linear regulator is a class of voltage regulator that maintains a stable output voltage even when the input-to-output differential is very small — typically a few hundred millivolts. LDOs belong to the broader hierarchy of linear regulators, which in turn fall under voltage regulators and power management ICs (PMICs). Unlike switching regulators, an LDO dissipates the input-output differential as heat, which makes it ideal for low-noise applications but restricts its use to moderate power levels. The RP114N331D's combination of low Iq, small footprint, and integrated CE pin places it firmly in the category of power-management ICs intended for portable and battery-powered systems. Key features of the RP114N331D include a tight ±1% output voltage accuracy, low dropout voltage suited to single-cell Li-ion sources, internal current limiting, thermal shutdown protection, and an output auto-discharge circuit. The CE input allows direct gating from a microcontroller GPIO for sequenced power-up, while the SOT-23-5 package keeps the PCB footprint under 9 mm² — a critical metric for compact designs. According to the manufacturer datasheet, the regulator's 50 uA typical quiescent current minimizes battery drain in standby. Architecturally, the RP114N331D uses a P-channel MOSFET pass element, which is the conventional topology for low-dropout positive regulators because it eliminates the need for a charge pump to drive an N-channel device. The integrated voltage reference, error amplifier, and feedback network are trimmed at the wafer stage to achieve the 3.3 V ±1% set-point accuracy without external resistors. Typical applications include single-cell Li-ion powered wearables, IoT sensor nodes, microcontroller core or I/O rail generation, USB peripheral power, and standby rails in metering or industrial modules. The device is also well suited as a post-regulator following a switching converter to clean up switching noise. When designing with the RP114N331D, observe the recommended 1.0 uF or greater input and output ceramic capacitors (X7R or X5R dielectric) for stability. Keep the trace from the output to the load short to preserve load-transient performance. Because the device is now flagged with an estimated end-of-life date of 2025 per distributor catalog data, design engineers should confirm long-term supply availability. This page consolidates distributor pricing, verified pin-compatible alternatives, and practical design notes that go beyond the manufacturer datasheet to accelerate component selection and reduce design risk.
RP114N331D-TR-FE - 300mA 3.3V LDO Regulator SOT-23-5 | Nisshinbo
The Nisshinbo Micro Devices (formerly Ricoh Electronics) RP114N331D-TR-FE is a 3.3 V fixed-output, low-dropout (LDO) linear regulator delivering up to 300 mA of output current from a 5-pin SOT-23-5 surface-mount package. The part operates over an input voltage range up to 5.5 V and is targeted at battery-powered and space-constrained portable designs where small footprint and low quiescent current matter most. A low quiescent current and a high ripple rejection make it well suited as a post-regulator stage following a DC-DC converter in noise-sensitive analog rails. An LDO (Low-Dropout) linear regulator is a member of the linear regulator family inside the broader voltage-regulator / power-management-IC hierarchy. Unlike a switching regulator, an LDO controls the series-pass element in its linear region and dissipates VIN-VOUT x IOUT as heat; its main advantage is the absence of switching noise and a much smaller external parts count, which makes it a standard building block for clean analog and RF rails, microcontroller core supplies, and post-filtering after a buck converter. Key features of the RP114N331D-TR-FE include a fixed 3.3 V output with +/-1% typical accuracy, low dropout voltage at 300 mA load, integrated current-limit and thermal-shutdown protection, and a ceramic-output-capacitor compatible architecture that eliminates the need for bulky tantalum or electrolytic capacitors. The SOT-23-5 footprint is one of the smallest standard JEDEC surface-mount packages, enabling high-density PCB designs while keeping the regulator's thermal path short. Internally, the RP114N uses a CMOS pass transistor with a precision bandgap reference and an error amplifier that drives the gate of the pass FET, achieving low ground current even at full load. The control loop is stable with low-ESR ceramic output capacitors, which simplifies BOM selection and reduces PCB area. Typical applications include single-cell Li-ion powered portable electronics, IoT sensor nodes, wireless modules, MCU core supply rails, and post-regulation for DC-DC converters in noise-sensitive analog front-ends. The 3.3 V fixed output makes it a direct fit for low-power MCUs, BLE radios, and sensor ICs. When designing with the RP114N331D-TR-FE, place input and output capacitors as close to the IC pins as possible and verify that the worst-case VIN-VOUT dropout at the chosen load current is within the device's dropout rating. The exposed thermal pad of the SOT-23-5 package must be tied to a copper pour to keep junction temperature within ratings. This page consolidates distributor pricing, drop-in alternative cross-references, and practical design notes for the RP114N331D-TR-FE that go beyond the manufacturer datasheet, helping engineers evaluate this part for new designs and as a replacement option in existing layouts.