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TPS70950DBVR - 150mA, 30V Ultra-Low IQ LDO Regulator | Texas Instruments
The Texas Instruments TPS70950DBVR is a 150-mA, 30-V, ultra-low quiescent current (1 uA typical) low-dropout (LDO) linear regulator with a fixed 5.0V output, housed in a 5-pin SOT-23 (DBV) package. The device accepts input voltages from 2.7V to 30V, supports 2% output accuracy over temperature via a precision band-gap reference, and includes an active-low enable pin for power sequencing. Reverse-current blocking protects the system when VIN drops below VOUT. 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 slightly above the output. LDOs sit within the broader hierarchy of linear regulators -> voltage regulators -> power management ICs -> semiconductors. Unlike switching regulators, LDOs do not introduce EMI but dissipate the difference (VIN - VOUT) * IOUT as heat. They are preferred where low noise, simplicity, and fast transient response are critical. The TPS70950DBVR delivers 150 mA continuous output current, has a typical dropout of 690 mV at full load, and offers integrated thermal shutdown plus current-limit protection. The SOT-23-5 footprint (2.9 mm x 1.6 mm) makes it one of the smallest wide-input LDOs available, ideal for space-constrained industrial and battery-powered designs. Architecturally, the part uses a PMOS pass element, which lowers ground-pin current to a minimum and enables true reverse-current blocking without a secondary diode. The 1 uA IQ makes the TPS70950DBVR well-suited to always-on, standby, or sleep-mode rails in IoT, metering, and remote-sensor applications. Typical applications include battery-powered IoT sensors, PLC analog I/O modules, portable medical monitors, smart meters, and post-regulation of switching converters where a clean 5V rail is required. The wide input range also allows direct connection to 12V/24V industrial bus rails. When designing with this device, place a 1 uF or larger ceramic input capacitor close to IN, and a 1 uF or larger low-ESR ceramic output capacitor close to OUT. Account for dropout at the worst-case 150 mA load and the lowest VIN in your system; for a 5V output from a battery below 5.69V the regulator will drop out of regulation. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Engineers searching for a wide-VIN, ultra-low-IQ 5V LDO in SOT-23-5 will find the TPS70950DBVR datasheet, parameters, and verified alternatives below.
TPS7133QDR - 3.3V 500mA LDO with RESET | Texas Instruments
The Texas Instruments TPS7133QDR is a micropower, low-dropout (LDO) PMOS linear voltage regulator delivering a fixed 3.3V output at up to 500mA in an 8-pin SOIC (D) package. It integrates an enable pin and a power-on RESET output with programmable delay, providing supervisor functionality on the same silicon as the regulator. An LDO regulator is a type of linear voltage regulator that maintains a stable output even when the input-output differential is very small. Unlike switching regulators, LDOs produce no switching noise, making them part of the broader power management IC (PMIC) family used to post-regulate noisy DC-DC rails and supply analog loads. Key features include a very low dropout voltage of 47mV at 100mA load, low quiescent current of 285uA, 274uVrms output noise, and 54dB PSRR at 120Hz. The PMOS pass element replaces the conventional pnp transistor, achieving an order-of-magnitude reduction in dropout voltage and quiescent current over older LDO architectures. Protection features include over-current and over-temperature shutdown, and the device operates from -40C to +125C junction temperature with a maximum input of 10V. The RESET output asserts low when the output falls out of regulation and includes a delay to allow processor power rails to stabilize, eliminating a separate supervisor IC in microcontroller systems. Typical applications include battery-powered portable instruments, 3.3V microcontroller and DSP power supplies, and post-regulation of switching converter outputs where low noise and fast transient response matter. Design tip: use a 0.1uF input bypass and at least a 10uF output capacitor with low ESR for stability, and keep the enable pin driven or tied high to avoid floating-pin leakage in always-on designs.
TPS715-Q1 - 50mA, 24V, 3.2uA IQ LDO | Texas Instruments
The Texas Instruments TPS715-Q1 is an automotive-grade, low-dropout linear regulator (LDO) delivering up to 50 mA of output current with an ultra-low quiescent current of only 3.2 uA (typical) across the entire load range. It accepts a wide input voltage range up to 24 V and is available in fixed and adjustable output versions in a miniaturized 2.00 mm x 1.25 mm, 5-pin SC-70 (DCK) package. An LDO (low-dropout regulator) is a type of linear voltage regulator that maintains a stable output voltage even when the input voltage is only slightly above the output. Within the power-management IC hierarchy, the TPS715-Q1 sits at the point-of-load regulation stage, converting higher-voltage battery or automotive rails into clean, low-noise supplies for microcontrollers, sensors, and analog circuitry. Key features include the 3.2 uA quiescent current that dramatically extends battery life in always-on systems, a wide input range supporting 24 V industrial and 12 V automotive rails, an internal soft-start that limits inrush current during startup, and a built-in overcurrent limit that protects the device during load shorts or fault conditions. The low dropout voltage allows efficient operation from already-regulated or heavily loaded supplies. Architecturally, the TPS715-Q1 uses a precision bandgap reference and an error amplifier driving a PMOS pass element, with the internal soft-start ramping the output to avoid excessive inrush when powering capacitive loads. Its micropower bias design keeps ground current essentially flat from no-load to full 50 mA load, simplifying power budget calculations for sleep and standby modes. Typical applications include battery-powered portable instrumentation, always-on wake-up and keep-alive supplies for automotive modules, and power-management attachments to low-power microcontrollers such as the MSP430 and C2000 families, where every microamp of quiescent current affects system lifetime. Design consideration: at only 50 mA maximum output, size the external output capacitor per datasheet stability requirements and account for thermal headroom at 24 V input, where dissipation at full load approaches 1 W - verify junction temperature in the tiny SC-70 footprint.
TPS71501DCKR - 50mA, 24V Wide-Input LDO Regulator | Texas Instruments
The Texas Instruments TPS71501DCKR is a 50 mA, wide-input, low-dropout (LDO) linear regulator housed in a 5-pin SC-70 (DCK) package. It accepts input voltages from 2.5 V to 24 V, supports an adjustable output from 1.2 V to 15 V via an external resistor divider, and consumes only 3.2 uA of quiescent current. A 415 mV typical dropout at full 50 mA load extends usable operation near the lower rail, and stability is guaranteed with any output capacitor greater than or equal to 0.47 uF. What is an LDO (Low-Dropout) linear regulator? An LDO is a type of voltage regulator that maintains a stable output voltage even when the input voltage is only marginally above the desired output. Within the broader taxonomy, an LDO is a linear regulator, which is a subclass of voltage regulators, sitting under power management ICs in the semiconductor hierarchy. Wide-input LDOs such as the TPS71501 differ from standard LDOs by tolerating much higher VIN, making them suited for industrial 24 V rails, battery stacks up to ~20 V, and post-bridge-rectifier supplies. Key features of the TPS71501DCKR include 3.2 uA quiescent current for battery-friendly standby, 415 mV typical dropout at 50 mA, internal current limit, and thermal shutdown protection. The SC-70-5 footprint occupies roughly 2.0 mm x 1.25 mm of board area, enabling dense designs in portable equipment. The device does not require an enable pin in the basic TPS71501 family, simplifying MCU-attached power trees. The TPS71501 uses a PMOS-pass architecture with a precision bandgap reference. The combination of low IQ and wide VIN lets it sit directly on a high-voltage battery or bus while still drawing negligible standby current, and the absence of a minimum-load requirement (true no-load stability) avoids the dummy-resistor tricks needed by some competing parts. Typical applications include always-on microcontroller rails in battery-powered IoT nodes, industrial 24 V sensor conditioning, post-bridge auxiliary supplies, and low-current analog references. The wide input range is especially valuable where the upstream source is a rectified mains-isolated rail. When designing with the TPS71501, place input and output capacitors close to the IC, keep the FB resistor divider traces short, and verify worst-case dropout at minimum VIN and maximum load. For higher-current rails (>200 mA), select a different TI LDO. This page combines manufacturer specifications, distributor stock and pricing, drop-in alternatives in the same SC-70-5 footprint, and practical design notes not consolidated in the TPS715 datasheet.
TPS71825-12DRVT - 200mA Dual-Output Low-Noise LDO | Texas Instruments
The Texas Instruments TPS71825-12DRVT is a dual-channel, low-dropout (LDO) linear regulator that delivers two independent fixed outputs of 2.5 V and 1.2 V at up to 200 mA each, packaged in a 2 mm x 2 mm 6-pin WSON (DRV) package. It accepts a wide 2.7 V to 6.5 V input voltage range and achieves a low 230 mV dropout at full 200 mA load on each rail. The regulator is engineered for battery-powered and noise-sensitive applications requiring two clean supplies from a single small footprint. What is an LDO (Low-Dropout) linear regulator? An LDO is a type of linear voltage regulator that maintains a stable, low-noise output voltage even when the input voltage is only marginally higher than the output. LDO regulators sit within a system hierarchy: they are a sub-category of linear regulators, which in turn belong to voltage regulators, the foundation of power management ICs in any electronic system. Unlike switching converters, LDOs do not introduce switching ripple, making them ideal for analog, RF, and audio power rails. Key features of the TPS71825-12DRVT include high power-supply rejection ratio (PSRR), low output noise, fast start-up, and an active-high enable pin for individual rail sequencing or shutdown. The integrated discharge and soft-start functions limit inrush current at power-on. The TPS718xx family's small WSON-6 footprint combined with dual outputs makes it especially attractive for space-constrained portable designs that need two low-noise rails simultaneously. Architecturally, the device uses a PMOS pass-element topology per rail, which contributes to its low dropout and low quiescent current behavior. The high PSRR reduces residual ripple from upstream DC-DC converters, while the low output noise floor preserves signal integrity in analog and RF signal chains that share the same battery or bus. Typical applications include smartphone RF transceiver power, portable media players, wireless sensor nodes, camera modules requiring dual-rail analog and digital supplies, handheld medical monitors, and any battery-powered system requiring two low-noise rails from a single chip. When designing with this part, place input and output capacitors as close to the IC as possible, use low-ESR ceramic capacitors on each output, and respect the 230 mV dropout headroom at maximum load to maintain full regulation. This page synthesizes distributor pricing, dual-rail drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
TPS73501DRBR - 500mA Low-IQ High-PSRR LDO | Texas Instruments
The Texas Instruments TPS73501DRBR is a 500-mA low-dropout (LDO) linear regulator with an enable pin, offering ultra-low quiescent current and high PSRR. It operates from an input voltage range of 2.7 V to 6.5 V and provides an adjustable output from 1.25 V to 6 V. The device is available in an 8-pin VSON (DRB) package (3x3 mm) and is designed for battery-powered and noise-sensitive applications. 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. It is a subclass of linear regulators that use a pass transistor operating in its linear region to drop excess voltage. LDOs are essential power management ICs providing clean, low-noise supply rails to sensitive analog and digital circuits within a broader power management architecture. Key features include a low quiescent current of 45 uA (typical), high PSRR of 68 dB at 1 kHz, and low output noise. The enable pin allows power sequencing and shutdown to reduce power consumption. Overcurrent and thermal shutdown protection ensure robust operation in demanding environments. The TPS73501DRBR uses a CMOS process technology, contributing to low quiescent current and high efficiency at light loads. The adjustable output is set with an external resistor divider, providing design flexibility. The VSON package with an exposed thermal pad enhances heat dissipation, allowing the regulator to deliver up to 500 mA with proper PCB layout. Fast start-up and excellent line and load transient response round out the AC performance. Typical applications include powering microcontrollers, sensors, and RF transceivers in battery-operated devices, as well as providing clean supply rails for audio and precision analog circuits. The low dropout voltage of 0.5 V at 500 mA ensures efficient operation even with small input-to-output voltage differences. When designing with this device, ensure adequate input and output capacitance (typically 1 uF) placed close to the pins. The enable pin can be tied to VIN if not used. For optimal noise performance, a noise bypass capacitor can be added to the NR pin.
TPS73501QDRBRQ1 - 500mA Low-Noise LDO, AEC-Q100 | TI
The Texas Instruments TPS73501QDRBRQ1 is an automotive-qualified (AEC-Q100) 500-mA low-dropout linear regulator featuring low quiescent current, low output noise, and high PSRR. It provides an adjustable output voltage from 1.25V to 6V and operates from -40C to +125C in an 8-pin VSON (DRB) 3x3 mm package with an enable pin for power sequencing. An LDO (low-dropout regulator) is a type of linear voltage regulator that maintains a regulated output even when the input voltage is only slightly above the output. Within the power management IC hierarchy, LDOs sit downstream of switching converters to provide clean, low-noise rails for noise-sensitive loads. Unlike DC-DC buck converters, an LDO adds no switching ripple, trading efficiency for output purity. Key features of the TPS735-Q1 family include 500-mA output current capability, very low dropout voltage for high-efficiency operation, low quiescent current that extends battery and standby life, and high PSRR that suppresses upstream switching-converter ripple. The enable pin (active functionality confirmed by TI product page) supports rail sequencing in multi-supply systems. The VSON-8 (DRB) package with exposed pad provides good thermal performance for a compact footprint. The device uses a low-noise architecture with a precision reference; for lowest output noise, an optional noise-bypass/noise-reduction capacitor at the NR pin reduces reference noise bandwidth (refer to TI datasheet). Internal protection includes current limit and thermal shutdown. Typical applications include automotive ADAS camera and radar module power rails, infotainment audio/RF supplies, cluster displays, and post-regulation of 3.3V or 5V switching rails in industrial systems requiring low-noise analog rails. Design tip: with a 5V input and 3.3V output at 500 mA, the device dissipates about 0.85W; verify junction temperature using the DRB package theta_JA with adequate PCB copper on the exposed thermal pad, per TI layout guidelines.
TPS73633DBVR - 3.3V 400mA LDO Regulator | SOT-23-5 | Texas Instruments
The Texas Instruments TPS73633DBVR is a 400 mA high-accuracy ultra-low-dropout (LDO) linear regulator with a fixed 3.3 V output, reverse current protection, and an active-high enable input, housed in a 5-pin SOT-23 (DBV) package. Per the TI part details page, it accepts an input voltage range of 1.7 V to 5.5 V and operates across -40 °C to +125 °C. The architecture is built on an advanced BiCMOS process and uses an NMOS pass element in a voltage-follower topology that delivers a typical dropout of just 75 mV at 400 mA. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a constant output voltage even when the input voltage approaches the output voltage. Positioned in the broader hierarchy, an LDO is a sub-class of linear regulator, which sits within the voltage regulator family, itself part of the power management integrated circuit (PMIC) category in mixed-signal semiconductors. LDOs are favored over switching regulators when the design demands ultra-low noise, fast transient response, and a minimal external component count. Key features of the TPS73633DBVR include: stability with NO output capacitor or with any capacitor type/value (cap-free operation), 75 mV typical dropout at 400 mA, ±0.5 % overall output accuracy, near-constant ground pin current over load, and integrated reverse-current protection that blocks discharge from the output back into the input when the input falls. The small SOT-23-5 footprint and 5 µA quiescent current make it attractive for portable, battery-powered designs. The TPS736 family uses an NMOS pass transistor driven by a high-drive charge pump and a precision bandgap reference. This topology yields low dropout and high reverse blockage while keeping the GND current nearly flat across the load curve, preserving efficiency at light loads where battery life matters most. The part includes internal current limiting and thermal shutdown for fault protection. Typical applications include portable/battery-powered equipment (handheld terminals, wearables, IoT sensor nodes), point-of-load regulation for microcontrollers and wireless modules, post-regulation following a DC-DC switcher to clean ripple, and industrial sensors running off 3.3 V rails. When designing with this part, the user can simply tie IN to OUT through a short trace if no bypass cap is available - the regulator is stable either way. Add a 0.1 µF X7R input cap if the source impedance is high or the input trace is long. This page synthesizes TI datasheet parameters, distributor pricing, drop-in SOT-23-5 alternatives, and practical design notes that you will not find in the bare datasheet PDF - including cross-brand pin-compatible equivalents and parametric trade-offs across the TPS736 family.
TPS73801DCQR - 1A, 20V Low-Noise LDO | Texas Instruments
The Texas Instruments TPS73801DCQR is a low-dropout (LDO) linear regulator optimized for fast transient response, supplying 1.0A of output current with a dropout voltage of only 300mV. It operates from an input voltage range of 2.7V to 20V and provides an adjustable output voltage from 1.21V to 20V, set by external resistors. The device is housed in a 6-pin SOT-223 (DCQ) package with a thermal tab for enhanced heat dissipation, making it suitable for compact, power-dense designs. 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. Unlike standard linear regulators, LDOs use a pass transistor with a low saturation voltage, allowing operation with minimal headroom. In the power management hierarchy, an LDO is a linear regulator, which is a voltage regulator, which falls under power management ICs used in virtually all electronic systems. Key features include low output noise of 45 uVRMS (up to 100 kHz), a quiescent current of 1mA (dropping below 1uA in shutdown), and controlled quiescent current in dropout, which prevents unexpected current spikes. The device also provides reverse current and reverse voltage protection, eliminating external protection diodes. Its fast transient response minimizes output deviation during load steps, making it ideal for powering microprocessors, DSPs, and other digital loads. Technically, the TPS73801 uses a PMOS pass element with a precision bandgap reference, achieving excellent line and load regulation. The adjustable output is set via an external resistor divider, and a shutdown (EN) pin supports power sequencing. The device is fully specified over the -40C to +125C junction temperature range. Typical applications include point-of-load regulation for FPGAs, ASICs, and microcontrollers, plus noise-sensitive analog supplies for audio and RF circuits, precision ADC/DAC references, and PLL/VCO rails. The wide input range also supports industrial 24V bus systems with adequate headroom. When designing with the TPS73801, ensure adequate input-to-output headroom to maintain regulation at all loads, and place input and output capacitors close to the device to minimize parasitic inductance and ensure stability.
TPS73801QDCQRQ1 - 1A Low-Noise LDO, AEC-Q100 | TI
The Texas Instruments TPS73801QDCQRQ1 is an automotive-grade, low-dropout (LDO) linear regulator delivering up to 1.0A of output current with a dropout voltage of only 300mV at full load. Housed in a 6-pin SOT-223 (DCQ) package, it accepts input voltages up to 20V and provides an adjustable output, making it well suited for post-regulation of switching converter rails in automotive and industrial systems. The Q1 suffix denotes AEC-Q100 qualification for automotive applications. An LDO regulator is a type of linear voltage regulator within the broader power management IC hierarchy that maintains a stable output voltage even when the input voltage is only slightly higher than the output. Unlike switching regulators, LDOs add no switching noise and excel at cleaning up noisy DC rails. The TPS73801 belongs to TI's low-noise, fast-transient-response LDO family. Key features include fast transient response optimized for load steps, an operating quiescent current of 1mA that drops to less than 1uA in shutdown, and quiescent current that is well controlled and does not rise in dropout - a common problem with other regulators. The device also integrates reverse current and reverse voltage protection, protecting the output stage when input collapses below output, an important reliability feature in automotive cold-crank and load-dump scenarios. Architecturally, the TPS73801 uses a precision reference and error amplifier topology tuned for transient performance, allowing tight regulation during fast microcontroller load transitions without large output capacitor banks. Typical applications include automotive body electronics and ADAS power rails, post-regulation of DC-DC converter outputs powering microcontrollers and sensors, and industrial point-of-load supplies where low noise and fast response are required. Design tip: ensure adequate input-to-output headroom for the 300mV dropout at 1A, and use the shutdown pin (quiescent current under 1uA) to save power in sleep states. Prices referenced as of 2026-08-29.
TPS74501PQWDRVRQ1 - Automotive 500mA LDO w/ Power-Good | TI
The Texas Instruments TPS74501PQWDRVRQ1 is an AEC-Q100 Grade 1 qualified, 500 mA ultra-low-dropout (LDO) linear regulator with integrated power-good (PG) functionality, packaged in a 6-pin 2 mm x 2 mm wettable-flank WSON (DRV) package. The device supports an input voltage range from 1.5 V to 6.0 V and provides an adjustable output from 0.55 V to 5.5 V, with the TPS74501 variant specifically being the adjustable-output version of the TPS745-Q1 family. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage approaches the output voltage, characterized by very low dropout voltage and high power supply rejection ratio (PSRR). Within the broader power management hierarchy, the TPS74501PQWDRVRQ1 sits as a linear regulator, a sub-category of voltage regulators, which in turn are part of the power management IC (PMIC) family used to deliver clean, low-noise rails to digital and analog loads. Key features include very low quiescent current (I_Q) for always-on systems, high PSRR across frequency for rejecting upstream switching-converter ripple, fast line and load transient response, and an open-drain power-good output for rail monitoring and processor reset coordination. The wettable-flank WSON package with optical-inspection-ready terminations supports automated optical inspection (AOI) on automotive PCB assembly lines. Internal protection features include thermal shutdown and current limit. Operating junction temperature spans -40 C to +150 C, qualifying the part for AEC-Q100 Grade 1 automotive stress profiles. The TPS74501PQWDRVRQ1 uses a low-resistance P-channel pass element topology that delivers the low-dropout performance while maintaining an architecture that contributes to its low I_Q. The high PSRR makes the regulator well suited as a post-regulator following a switching DC-DC converter, cleaning the residual switching ripple before it reaches noise-sensitive analog blocks. The wettable flanks of the WSON-6 package enable solder-joint inspection on automotive production lines. Typical applications include automotive ADAS sensor power rails, rear-view and surround-view camera modules, infotainment processors and telematics modules, body electronics and lighting controllers, and industrial PLC I/O supply rails. Anywhere a 0.55 V to 5.5 V clean low-noise rail at up to 500 mA is required in a small footprint, the TPS74501PQWDRVRQ1 is a strong fit. When designing with this device, place the input and output ceramic capacitors as close as possible to the IC pins to maximize PSRR and load-transient performance. Always verify the power-good pull-up voltage does not exceed the absolute maximum rating, and respect the junction-to-ambient thermal resistance to avoid thermal shutdown in continuous high-power conditions. This page synthesizes distributor stock data, drop-in same-package alternatives, and practical design notes not assembled in the manufacturer datasheet.
TPS74601PBDRVR - 1A Adjustable LDO with Power Good | Texas Instruments
The Texas Instruments TPS74601PBDRVR is a 1-A ultra-low-dropout (LDO) linear regulator with adjustable output from 0.55V to 5.5V, housed in a 6-pin WSON (DRV, 2x2 mm) package with an exposed thermal pad. The device features an ultra-low 225 mV dropout at full 1-A load, an integrated power-good indicator, an active-high enable input, and only 25 uA typical quiescent current, making it suited for power-sensitive designs. According to TI datasheet literature, input voltage ranges from 1.5 V to 6.0 V with an absolute maximum of 6.5 V, and output accuracy is rated at 1% over the -40C to +125C operating range. An LDO (Low-Dropout) linear regulator is a class of voltage regulator that maintains a tightly regulated output voltage even when the input-to-output differential (dropout) is very small - typically a few hundred millivolts. In the broader system taxonomy, an LDO sits below the category of linear regulators, which in turn sits below voltage regulators, and ultimately below power management ICs. LDOs convert a higher DC rail to a lower, accurate DC rail without the switching noise of a buck converter, trading efficiency for clean output, which is essential when the load is sensitive to ripple or high-frequency noise. Key features that distinguish the TPS74601 include a 45 dB PSRR at 100 kHz, internal soft-start, foldback overcurrent protection, output discharge, and an open-drain PG output that asserts when the output is within regulation. The TPS74601PBDRVR uses a PNP bipolar pass element architecture, which provides the low dropout characteristic and high efficiency at moderate VIN/VOUT differentials. Stability is achieved with only a 1 uF ceramic output capacitor, simplifying BOM and lowering solution cost. Typical applications include point-of-load regulation for microcontrollers, FPGAs, SoCs and DDR memory in portable and battery-powered equipment, USB-powered peripherals, building automation, and industrial sensor nodes. The small 2x2 mm footprint and high accuracy suit dense board layouts where board area is constrained. When designing with the TPS74601PBDRVR, ensure VIN-VOUT headroom stays above 225 mV at full load, place the 1 uF input and output ceramic capacitors as close to the IC as possible, and use the PG output for rail sequencing with downstream loads.
TPS74601PQWDRVRQ1 - 1A Automotive LDO w/ PG | WSON-6 | Texas Instruments
The Texas Instruments TPS74601PQWDRVRQ1 is an automotive-qualified, 1-A, ultra-low-dropout (LDO) linear regulator with integrated power-good (PG) output, housed in a compact 6-pin WSON package (2 mm x 2 mm) with wettable flanks for optical inspection. It accepts input voltages from 1.5 V to 6.0 V and provides an adjustable output from 0.55 V to 5.5 V, with 25 uA typical quiescent current and 53 uVrms output noise (per JLCPCB parameter listing). 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. It belongs to the broader power-management-IC hierarchy: LDO -> linear regulator -> voltage regulator -> power management IC -> semiconductor. Unlike a switching regulator, an LDO does not introduce switching noise, making it ideal for post-regulation after a noisy DC-DC converter or for direct battery-powered rails. Key features of the TPS74601PQWDRVRQ1 include 38 dB PSRR at 100 kHz, 895 mV maximum dropout at 1 A load, integrated UVLO, over-current protection, over-temperature protection, and short-circuit protection. The wettable-flank 6-WSON package (2x2 mm) is significantly smaller than competing 8-pin alternatives and supports automated optical inspection (AOI) for automotive PCB assembly lines. Architecturally, the TPS746-Q1 uses a P-channel MOSFET pass element that eliminates the need for a bias supply and minimizes ground current variation across load. The integrated open-drain PG pin flags output-voltage readiness for downstream MCUs and FPGAs, simplifying multi-rail sequencing in zonal automotive E/E architectures. Typical applications include automotive camera modules, ADAS sensor power, body-control modules, infotainment processors, and post-regulation for switching converters. The -Q1 suffix indicates AEC-Q100 qualification for Grade 1 automotive environments (-40C to +125C junction). When designing with this device, place input/output ceramics as close to the pins as possible and observe the 1.7 A typical current limit when calculating transient load response. The PG pull-up resistor should be tied to a known-good rail and never left floating. This page synthesizes distributor pricing, AEC-Q100-qualified drop-in alternatives, and practical design notes not aggregated on a single manufacturer page.
TPS74801DRCR - 1.5A Low-VIN LDO with Soft-Start | Texas Instruments
The Texas Instruments TPS74801DRCR is a 1.5-A low-dropout (LDO) linear regulator designed for low-input-voltage applications. It operates from an ultra-low VIN range of 0.8 V to 5.5 V, with a separate VBIAS supply of 2.7 V to 5.5 V, and provides an adjustable output voltage from 0.8 V to 3.6 V. The device is housed in a 10-pin VSON (3x3 mm) package, offering a compact solution for space-constrained designs. 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. It is a subclass of linear regulators, which in turn are part of the broader voltage regulator family within power management ICs. LDOs are essential for providing clean, low-noise power rails to sensitive analog and digital circuits, especially in battery-powered and low-voltage systems. Key features of the TPS74801DRCR include a low dropout voltage of 60 mV typical at 1.5 A (with VBIAS = 5 V), a power-good (PG) output for supply monitoring and sequencing, an enable (EN) pin with active-high logic, and programmable soft-start to control inrush current. The device also offers overcurrent and thermal protection, ensuring robust operation in demanding environments. Technically, the TPS74801 uses a PMOS pass element with a separate bias supply, allowing ultra-low input voltage operation while maintaining low dropout. The programmable soft-start is implemented via an external capacitor on the SS pin, which sets the output slew rate during startup. This prevents output overshoot and limits inrush current with large capacitive loads, and the monotonic startup is designed for safely powering processors, FPGAs, and ASICs. Typical applications include powering FPGAs, DSPs, and microcontrollers from low-voltage rails, as well as supplying clean voltages for audio and RF circuits. The low VIN capability makes it ideal for systems running from 1.8 V or 2.5 V rails, where traditional LDOs with higher minimum input voltages cannot operate. The PG output simplifies power sequencing in multi-rail systems. When designing with the TPS74801DRCR, ensure the VBIAS pin is supplied between 2.7 V and 5.5 V and VIN does not exceed 5.5 V. Place input and output capacitors close to the pins, size the SS capacitor for the load capacitance, and provide adequate copper pour for thermal dissipation at high dropout.
TPS74801QDRCRQ1 - 1.5A Low-VIN Automotive LDO | TI
The Texas Instruments TPS74801QDRCRQ1 is an automotive-qualified (AEC-Q100), 1.5-A low-dropout (LDO) linear regulator with an ultra-low minimum input voltage of 0.8 V, adjustable output, power-good indicator, enable pin, and programmable soft-start, supplied in a 10-pin VSON (DRC) 3x3 mm package. An LDO (low-dropout) regulator is a type of linear voltage regulator that maintains a regulated output voltage even when the input supply is only slightly higher than the output. Within the power management IC hierarchy, the TPS74801-Q1 belongs to the low-VIN LDO family, positioned after point-of-load DC-DC converters to deliver clean post-regulated rails for processors, FPGAs, and ASICs. Key features include a 0.8 V minimum input voltage that supports post-regulation of low core rails, 1.5 A continuous output current, a low dropout voltage that maximizes conversion efficiency in low-headroom designs, and programmable soft-start via an external capacitor for controlled inrush into heavy capacitive loads. The power-good (PG) output enables rail monitoring and sequencing logic, while the enable (EN) pin supports multi-rail power-up ordering. Technically, the device uses an adjustable feedback architecture; the output voltage is set by an external resistor divider from OUT to the FB/adjacency network per the TI datasheet, and the soft-start pin programs output ramp time. The VSON-10 (DRC) package features an exposed thermal pad for low theta-JA and efficient heat spreading on multilayer PCBs. Typical applications include automotive ADAS and infotainment processor core rails, FPGA/ASIC I/O and core power in industrial systems, and post-regulation of switching converter outputs where low noise and fast transient response are required. The Q1 grade suits 12 V automotive battery-derived intermediate buses. Design tip: size the soft-start capacitor to limit inrush given downstream capacitance, and ensure the input rail stays above 0.8 V under all transients; dropout and thermal limits (1.5 A) should be verified with the TI thermal design procedure at maximum VIN-VOUT differential.
TPS76133DBVR - 100mA, 3.3V Fixed LDO Regulator | Texas Instruments
The Texas Instruments TPS76133DBVR is a 100 mA, low-dropout (LDO) linear regulator that delivers a fixed 3.3 V output from inputs up to 16 V, packaged in a 5-pin SOT-23 (DBV). It is built on a proprietary BiCMOS process and is engineered specifically for battery-powered applications where low quiescent current, low dropout, and reverse-current protection are critical. According to TI's product page, the TPS76133 family integrates ESD protection, thermal shutdown, and less than 1 uA quiescent current in shutdown. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage approaches the output voltage. Within the broader power-management hierarchy, LDOs sit under linear regulators, which themselves are a subset of voltage regulators and ultimately power management ICs (PMICs). Unlike switching converters, LDOs add no high-frequency switching noise to the output, making them the preferred post-regulation stage for noise-sensitive analog and RF rails. Key features include a typical dropout of approximately 170 mV at 100 mA load (per TI product characterization), reverse-battery protection on the input, and a logic-level active-high shutdown pin that draws less than 1 uA quiescent current when disabled. The SOT-23-5 footprint allows direct replacement of legacy 5-pin LDOs while reducing PCB area, and the -40 C to +125 C operating junction temperature range supports industrial and automotive-adjacent designs. The TPS76133 uses a PNP pass element topology, which gives it the low-dropout characteristic and enables reverse-current blocking when the input is shorted to ground. The internal bandgap reference and feedback network are trimmed at the wafer level, so no external resistor divider is required for fixed 3.3 V operation - simplifying BOM count compared to adjustable LDOs. Typical applications include 3.3 V rails for MSP430 microcontrollers, real-time clocks, low-power wireless modules (BLE, sub-GHz), and post-regulation after a switching DC-DC converter in handheld test equipment. The shutdown pin enables wake/sleep duty-cycling to extend battery life in IoT edge nodes. When designing with the TPS76133DBVR, place a 1 uF ceramic input capacitor and a 1 uF ceramic output capacitor as close to the IC pins as possible. Because the device is intended for battery inputs, ensure input transients (load-dump, reverse-polarity) are clamped upstream to stay within the 16 V absolute maximum rating.
TPS76333DBVR - 150mA, 3.3V Fixed LDO Regulator | Texas Instruments
The Texas Instruments TPS76333DBVR is a 150-mA low-dropout (LDO) linear voltage regulator with a fixed 3.3V output, housed in a 5-pin SOT-23 (DBV) package. It accepts an input voltage from 2.7V to 10V and delivers up to 150 mA of load current with a typical dropout of approximately 180 mV at full load. The device integrates thermal protection and a logic-enabled sleep mode that drops quiescent current to a 1 µA maximum at TJ = 25 °C. 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 slightly higher than the output voltage. LDOs sit within the broader power-management IC hierarchy: LDO -> linear regulator -> voltage regulator -> power management IC -> semiconductor. Compared with switching regulators, LDOs introduce no switching ripple and require only small input/output capacitors, but they dissipate (VIN - VOUT) x IOUT as heat, which limits them to low-current and low-dropout applications. The TPS76333 offers ±2% output accuracy across line, load, and temperature for the new chip revision, and provides a 3.3V fixed output suitable for powering MCUs, digital logic, and analog circuitry from a 5V or higher rail. Integrated current-limit and thermal-shutdown features protect the device from output shorts and overload conditions. The 5-pin SOT-23 footprint makes it appropriate for cost-sensitive, space-constrained designs. Typical applications include portable and battery-powered equipment, microcontroller and DSP core rails, post-regulation after a switching converter to remove ripple, and 3.3V logic supply generation from a 5V bus. Designers should select input and output capacitors rated to handle the expected ripple and ensure VIN remains above VOUT + dropout at the minimum load step. The fixed-output variant eliminates external resistors, simplifying BOM and reducing board area in high-volume consumer products.
TPS76930DBVR - 100mA 3V Fixed LDO Regulator SOT-23-5 | Texas Instruments
The Texas Instruments TPS76930DBVR is a 100-mA, fixed 3.0V output, ultra-low-power low-dropout (LDO) linear regulator housed in a 5-pin SOT-23 (DBV) package. It operates from a 2.7V to 10V input range with a typical dropout of only 115 mV at full load, and is qualified for -40C to +125C junction temperature operation. 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 taxonomy, an LDO is a linear regulator, which is a voltage regulator, which is a power management integrated circuit, which is a semiconductor. LDOs are preferred over switching regulators when low noise, small solution size, and simplicity outweigh efficiency concerns. Key features include 17 uA typical quiescent current, 1 uA quiescent current in standby mode, integrated enable pin, internal current limit, and thermal shutdown protection. The PMOS pass element architecture eliminates the base-current loss typical of older PNP LDOs, contributing to its ultra-low quiescent current specification and improving light-load efficiency in battery-powered applications. The TPS76930DBVR uses a PMOS pass transistor instead of the conventional PNP pass element, which eliminates base-current loss and enables the ultra-low quiescent current. With only 17 uA quiescent current in regulation and 1 uA in standby, this device is well suited for always-on subsystems where total quiescent draw dominates battery life. Typical applications include battery-powered portable equipment such as wireless sensors, remote controls, and handheld instruments, microcontroller power rails for low-power MCUs, and standby power rails for microcontrollers and real-time clocks (RTCs). The wide input range also supports industrial 24V systems via pre-regulation. When designing with this device, ensure input and output capacitors are placed as close as possible to the IC pins. The enable pin allows the regulator to be placed in 1 uA standby mode when the system is idle, which is critical for battery-life calculations in always-on systems. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a one-stop decision view for low-Iq LDO selection.
TPS77033DBVT - 50mA, 3.3V Ultra-Low-Power LDO | Texas Instruments
The Texas Instruments TPS77033DBVT is an ultra-low-power, 3.3V fixed-output, low-dropout (LDO) linear regulator delivering up to 50 mA of load current from a 2.7 V to 10 V input rail in a 5-pin SOT-23 (DBV) package. It features a typical dropout voltage of 48 mV at 50 mA, 17 µA quiescent current in regulation, and 1 µA quiescent current in standby, plus a logic-level active-low enable input. An LDO (low-dropout) linear regulator is a type of linear voltage regulator that maintains a stable output voltage even when the input-to-output voltage differential approaches the regulator's dropout limit. In the broader component taxonomy, an LDO is a sub-category of linear regulator, which itself sits under the voltage-regulator family within power-management ICs. LDOs are preferred over switching regulators in noise-sensitive analog and RF signal paths because, unlike a buck or boost converter, an LDO introduces no switching ripple and produces a spectrally clean output that does not require heavy post-filtering. Key specifications of the TPS77033DBVT include 3.3 V fixed output with ±2 % accuracy (TPS770 family), 48 mV typical dropout at 50 mA, 17 µA typical I_Q (28 µA max on the new chip), 1 µA standby current with EN pulled low, ±2 % output tolerance over line, load, and temperature, and internal current limit with thermal shutdown. The 5-pin SOT-23 (DBV) package has a theta_JA of approximately 180 °C/W on a standard JEDEC 4-layer test card, allowing 50 mA continuous operation from -40 °C to +125 °C junction temperature. Internally, the TPS77033 uses a P-channel MOSFET pass element driven by a precision bandgap reference. The P-channel architecture allows the part to regulate with very low input-to-output differential, eliminating the need for a charge pump or auxiliary supply. The enable pin places the regulator into a low-I_Q standby state when asserted, supporting battery-powered duty-cycled loads. Typical applications include battery-powered portable and wearable electronics where quiescent current dominates standby life, microcontroller and real-time clock (RTC) rails in IoT edge nodes, post-regulation after a switching converter to strip ripple on noise-sensitive analog rails, 3.3 V logic supply in handheld instruments, and as a keep-alive rail in USB and other plug-in peripherals. When designing with the TPS77033DBVT, place a 1 µF or larger low-ESR ceramic output capacitor within 1 cm of the OUT pin to ensure loop stability. The PG (power-good) output is open-drain and requires a pull-up resistor. Verify that the input voltage never exceeds the 10 V absolute maximum, even on load-dump transients, by adding a TVS clamp if the rail is exposed to automotive or industrial surges. This page synthesizes distributor pricing, drop-in SOT-23-5 alternatives, and practical battery-life design notes not found in the manufacturer datasheet alone, providing a one-stop engineering reference for TPS77033DBVT selection.
TPS77515-EP - 500mA Fast Transient LDO | Texas Instruments
The Texas Instruments TPS77515-EP is an enhanced product (EP) fast-transient-response 500-mA low-dropout voltage regulator with a fixed 1.5V output. It is designed to be stable with a 10-µF low ESR capacitor, providing high performance at a reasonable cost. The device is available in a PowerPAD HTSSOP-20 package, which offers excellent thermal performance for space-constrained applications. A low-dropout (LDO) 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. LDOs are essential in power management ICs for providing clean, low-noise supply rails to sensitive analog and digital circuits. The TPS77515-EP belongs to the TPS775xx family, which includes variants with RESET output (TPS775xx) and PG output (TPS776xx). Key features include a fast transient response, which minimizes output voltage deviation during load steps, and stability with low ESR capacitors. The device also includes a RESET output that monitors the regulated output and provides a reset signal to microprocessors and other digital systems. The TPS77515-EP is specified for the extended industrial temperature range and is part of TI's Enhanced Product line, which offers extended temperature range and improved reliability for mission-critical applications. Technically, the TPS77515-EP uses a PMOS pass element, which allows for a low dropout voltage and low quiescent current. The fast transient response is achieved through a high-bandwidth error amplifier and a carefully designed compensation network. The device is stable with a 10-µF low ESR capacitor, which simplifies the output capacitor selection and reduces the overall solution footprint. Typical applications include power supplies for DSPs, microcontrollers, and other digital ICs that require a clean, regulated 1.5V rail. The RESET output is particularly useful in systems that need a reliable power-on reset signal. The device is also suitable for battery-powered equipment, where low dropout voltage and low quiescent current are critical. When designing with the TPS77515-EP, ensure that the input voltage is at least 2.5V (the minimum input voltage for the 1.5V output) and that the output capacitor is a 10-µF low ESR ceramic capacitor. The RESET output can be used to hold a microcontroller in reset until the output voltage is stable, which is essential for reliable system startup.
TPS78433QWDRBRQ1 - 300mA 3.3V AEC-Q100 LDO | Texas Instruments
The Texas Instruments TPS78433QWDRBRQ1 is an automotive-qualified, 300-mA, low-IQ, high-PSRR low-dropout (LDO) linear regulator with a fixed 3.3 V output, housed in an 8-pin VSON (DRB) package measuring 3 x 3 mm. It accepts an input voltage range of 1.65 V to 6.0 V and features an active-high enable pin, integrated thermal shutdown, and current-limit protection. AEC-Q100 Grade 1 qualification makes it suitable for demanding automotive environments with ambient operation from -40 °C to +125 °C and junction temperatures up to +150 °C. A low-dropout (LDO) regulator is a type of linear voltage regulator that maintains a stable output voltage using a series pass element, even when the input voltage is only slightly higher than the desired output. LDOs sit within the broader hierarchy of voltage regulators under power management ICs, and they are preferred over switching regulators when low noise, small footprint, and fast transient response matter more than conversion efficiency. The TPS78433QWDRBRQ1 targets always-on automotive subsystems where low quiescent current extends standby life on the vehicle battery. Key features include a low quiescent current that preserves battery life in always-on systems, a high power-supply rejection ratio (PSRR) that attenuates upstream switching-converter ripple, and high output-voltage accuracy across line, load, and temperature. The device also integrates an active-high enable pin that supports power sequencing in multi-rail systems and a thermal-shutdown block that protects the die under fault conditions. The compact VSON-8 footprint suits module-level PCB layouts with strict area budgets. Technically, the TPS784-Q1 family uses a PMOS pass topology to achieve low dropout, and its internal reference and feedback network are trimmed for tight initial accuracy. Stability is maintained with small ceramic output capacitors, simplifying BOM cost and PCB area. The wide operating range and automotive-grade qualification allow direct use under the hood, in body controllers, and in advanced driver-assistance system (ADAS) sensor supplies. Typical applications include automotive camera modules, body and chassis controllers, ADAS sensor rails, infotainment head-unit auxiliary supplies, and always-on microcontroller rails in cluster and telematics modules. The fixed 3.3 V output suits low-power MCUs and CAN/LIN transceivers directly. When designing with this device, ensure the input-to-output headroom is sufficient to keep the LDO in regulation at maximum load, and place input/output ceramic capacitors close to the pins. For applications sharing an automotive battery feed, follow OEM load-dump and reverse-battery protection guidance around the LDO input. This page synthesizes distributor pricing, AEC-Q100 drop-in alternatives, and practical automotive design notes not bundled in the manufacturer datasheet alone.
TPS78533QWDRBRQ1 - 1A 3.3V Fixed LDO, AEC-Q100 | Texas Instruments
The Texas Instruments TPS78533QWDRBRQ1 is a 1 A ultra-low-dropout (LDO) linear regulator in an 8-pin SON (3 mm x 3 mm, DRB) package that delivers a fixed 3.3 V output from a 1.7 V to 6.0 V input rail. The device integrates an enable input, an internal soft-start, output discharge, input under-voltage lockout, over-current protection, and thermal shutdown. Quiescent current is rated at 35 uA typical, output noise is 30 uVrms (per the JLCPCB parametric listing), and PSRR is 60 dB at 1 kHz with a 315 mV typical dropout at 1 A load. The -Q1 suffix denotes full AEC-Q100 Grade-1 automotive qualification. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a constant output voltage even when the input voltage approaches the output voltage, defined by a small dropout voltage. Within the power management hierarchy, the LDO sits below switching converters and is used to post-regulate a noisy or higher-voltage rail into a clean, low-noise rail. Compared to a switching DC-DC converter, an LDO introduces no switching ripple but dissipates VIN minus VOUT as heat, making it ideal as a final stage in front of noise-sensitive analog and digital loads. Key features of the TPS78533QWDRBRQ1 include the 30 uVrms output noise, 60 dB PSRR at 1 kHz, and only 35 uA of quiescent current - a strong combination for always-on automotive battery rails where sleep current matters. The integrated soft-start limits inrush during turn-on, and the output discharge FET actively pulls the rail down when the enable pin is de-asserted, eliminating residual charge on downstream loads. The SON-8 package with exposed thermal pad provides a low theta_JB for direct dissipation into the PCB copper. The TPS785-Q1 architecture combines a precision bandgap reference with a low-impedance P-channel pass element. The wide 1.7 V to 6.0 V input range supports direct connection to a 3.3 V or 5 V system rail, while the 1 A continuous rating with 315 mV dropout at full load allows operation on rails as low as approximately 3.6 V while still delivering 3.3 V at the output. According to the TI product page, the device is qualified to AEC-Q100 Grade 1 (-40 C to +125 C ambient) and is targeted at automotive post-regulation use cases. Typical applications include automotive infotainment and cluster power rails, ADAS sensor and camera modules, body electronics and lighting controllers, always-on battery-backed MCUs, industrial sensors and PLC analog front ends, and portable battery-powered equipment. In each of these, the LDO acts as a clean post-regulator following a higher-voltage or switching pre-regulator. When designing with this part, verify that the maximum power dissipation (estimated: PD_max = (VIN_max - 3.3 V) x 1 A) stays within the thermal envelope of the SON-8 EP land pattern. A minimum 1 oz copper pour of approximately 1 cm^2 is recommended to keep junction temperature rise below 30 C at 5 V input and 1 A load. This page synthesizes distributor stock data, AEC-Q100 drop-in alternatives within the TPS785 family, and practical layout notes - content not found on the standalone TI datasheet PDF.
TPS79933DRVR - 200mA, 3.3V Fixed LDO, Low Noise | Texas Instruments
The Texas Instruments TPS79933DRVR is a 200 mA, fixed 3.3 V output, low-dropout (LDO) linear regulator with low quiescent current, ultra-low noise, and high PSRR, housed in a 6-pin WSON (DRV) 2x2 mm package. Input voltage range is 2.7 V to 6.5 V with a typical dropout of 90 mV at 200 mA load, while quiescent current is 40 uA typical. The device integrates an active-high enable pin with inrush current protection, plus internal soft-start behavior through controlled bias rise. 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 slightly above the output voltage. Within the broader taxonomy, an LDO is a subclass of linear regulator, which itself sits under voltage regulators and finally under power management ICs (PMICs). Unlike switching regulators, LDOs add no switching ripple but dissipate (VIN - VOUT) x IOUT as heat, so they are favored for noise-sensitive analog and RF rails. Key features include 200 mA continuous output current, 3.3 V fixed output (with -33 suffix in the family), high PSRR of 66 dB at 1 kHz and 51 dB at 10 kHz to reject upstream switching ripple, and 40 uA typical quiescent current for battery-powered designs. The WSON-6 (DRV) 2x2 mm package with exposed thermal pad provides a low theta_JA suitable for space-constrained wearables, handsets, and IoT nodes. Architecturally, the TPS79933 uses a PMOS pass element driven by a precision bandgap reference, with internal compensation that only requires 1 uF ceramic output capacitance for stability. The 2x2 mm WSON footprint is the same pad pattern used across the TPS799xx family, so different output-voltage variants (1.2 V, 1.5 V, 1.8 V, 2.5 V, 2.8 V, 3.0 V, 3.3 V, 4.5 V) and the adjustable version can be interchanged without PCB rework. Typical applications include low-noise power for handsets and smartphones, wireless modules and IoT sensor nodes, portable battery-powered equipment (PMICs, MCUs, sensors), and post-regulation after a switching converter to clean residual ripple for ADC, DAC, RF, or audio blocks. When designing, hold input-to-output headroom below the dropout spec, place input/output ceramics within ~2 mm of the pins, and tie the exposed pad to a ground copper pour of at least 10 mm^2 for adequate heat spreading. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.
TPS7A1601DGNR - 60V 100mA Ultra-Low IQ LDO | Texas Instruments
The Texas Instruments TPS7A1601DGNR is an ultra-low quiescent current, high-input voltage LDO linear regulator delivering up to 100 mA of output current in an 8-pin HVSSOP (DGN) package with exposed thermal pad. It operates from 3 V to 60 V input and provides an adjustable output from 1.2 V to 18.5 V set by an external resistor divider. An LDO (low-dropout) linear regulator is a voltage regulator that maintains a stable output even when input and output voltages are close, using a pass transistor in its linear region. LDOs are a subclass of linear regulators within the broader power management IC family, valued for low output noise and simplicity. The TPS7A1601 belongs to this category, optimized for ultra-low standby power in always-on systems. Key features include a typical quiescent current of only 5 uA, dramatically extending battery life in continuous or sporadic (power backup) applications. The device integrates a CMOS-logic-compatible enable pin and an open-drain active-high power-good (PG) output with user-programmable delay for power-rail sequencing. Dropout voltage is typically 300 mV at 100 mA load, and the part includes overcurrent and thermal shutdown protection. The CMOS architecture pairs a precision 1.2 V bandgap reference and error amplifier with a P-channel MOSFET pass element, achieving low IQ without sacrificing transient response. The device is stable with ceramic output capacitors as small as 2.2 uF, simplifying the BOM. The open-drain PG output can be pulled up to any rail up to 60 V, enabling flexible level-shifting. Typical applications include battery-powered industrial sensors, automotive body control modules, and always-on microcontroller power supplies. The 60 V rating allows direct connection to 12 V and 24 V industrial buses with full tolerance for load-dump transients, eliminating a pre-regulator stage. Design consideration: at high input-to-output differentials, dissipation is significant (e.g., 24 V to 3.3 V at 100 mA is about 2.1 W), so PCB copper area under the exposed pad must be sized for thermal performance, and the programmable PG delay should be set to match MCU reset requirements.