RP130N151A-TR-FE - 150mA Low-Noise LDO 1.5V Fixed | Nisshinbo
Teilenummer: RP130N151A-TR-FE ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $0.46 | $0,46 |
| 10 | $0.39 | $3,90 |
| 100 | $0.28 | $28,00 |
| 500 | $0.22 | $110,00 |
| 1.000 | $0.19 | $190,00 |
| 3.000 | $0.1557 | $467,10 |
RP130N151A-TR-FE Übersicht
An LDO (low-dropout) regulator is a class of linear voltage regulator that maintains a stable output voltage even when the input-to-output differential drops to a few hundred millivolts. Within the broader power-management taxonomy, the RP130 family sits at the bottom of the chain: AC/DC or DC/DC switching converter -> LDO -> load. Placing an LDO downstream of a switching pre-regulator cleans up switching ripple while preserving the low-noise floor demanded by analog and RF signal-chain blocks.
Key specifications of the RP130N151A-TR-FE include a fixed 1.5 V positive output, 150 mA continuous load capability, 80 dB ripple rejection for clean post-regulation, and a typical quiescent current of 38 uA that extends battery life in standby. The CMOS process enables fast line-transient response, a low internal reference error, and stable operation with small ceramic output capacitors. Built-in protection includes current limit and thermal shutdown, and the part is specified across an extended industrial temperature range.
Typical applications span wearable and portable electronics, IoT sensor nodes, low-power MCUs and real-time-clock (RTC) supplies, and post-regulation stages for switching converters powering RF transceivers, image sensors, or precision analog blocks. The SOT-23-5 footprint is one of the smallest standard SMD regulator packages, enabling high-density board layouts.
When designing with the RP130N151A, place the input and output ceramic capacitors as close as possible to the IC, ensure the input voltage stays above the minimum operating rail under all transient conditions, and verify thermal dissipation at the maximum load - even small SOT-23-5 packages can heat up at high dropout. This page synthesizes distributor pricing, drop-in same-package alternatives, and design notes not found in the bare manufacturer datasheet.
Drop-in-Alternativen für RP130N151A-TR-FE – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
RP130N181A-TR-FE
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
RP130N251A-TR-FE
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
RP130N281A-TR-FE
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
RP130N331A-TR-FE
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
RP130N121A-TR-FE
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
RP130N151A-TR-FE Grenzwerte & elektrische Eigenschaften
| Regulator Type | Low Dropout (LDO), Positive, Fixed |
| Ausgangsspannung | 1.5 V (fixed) |
| Maximaler Ausgangsstrom | 150 mA |
| Quiescent Current (Typ.) | 38 uA |
| Ripple Rejection (PSRR) | 80 dB (typical) |
| Line Transient Response | Excellent (per manufacturer) |
| Output Capacitor | Ceramic, low-ESR compatible |
| Strombegrenzung | Built-in |
| Thermisches Abschalten | Built-in |
| Gehäuse | SOT-23-5 (SOT-753 / SC-74A) |
| Montageart | Surface Mount |
| RoHS-Status | Compliant (LEAD FREE) |
RP130N151A-TR-FE Pin-Konfiguration
| Pin 1 | VIN — Input supply voltage |
| Pin 2 | GND — Ground |
| Pin 3 | CE — Chip enable (active high) |
| Pin 4 | NC — Not connected (per datasheet) |
| Pin 5 | VOUT — Regulated output voltage (1.5 V) |
Typische Anwendungen
RP130N151A-TR-FE ist geeignet für 7 Anwendungs: Wearable and Portable Device Power Rails, IoT Sensor Node Supply, Post-Regulation After Switching Converter, RTC and Backup Domain Supply, Image Sensor Analog Power Rail, Precision Analog Front-End Supply, Industrial Sensor Module Power.
Wearable and Portable Device Power Rails
The RP130N151A-TR-FE's 38 uA typical quiescent current and 150 mA output make it well suited to battery-powered wearable and portable devices such as fitness bands, smart watches, and Bluetooth headsets. Its 80 dB ripple rejection cleans up ripple from upstream buck converters that often power the same PCB, while the SOT-23-5 package fits inside the smallest wearable enclosures. Designers pair it with a 1 uF ceramic input capacitor and a 1 uF ceramic output capacitor to deliver a clean 1.5 V rail to MCUs, radios, and sensors without measurable standby-drain penalty.
Empfohlen
IoT Sensor Node Supply
In IoT sensor nodes, the RP130N151A-TR-FE provides a stable post-regulated 1.5 V rail for low-power wireless MCUs and sensor front-ends. The high 80 dB PSRR attenuates switching noise from a primary buck or boost converter, protecting analog sensor accuracy and RF link quality. The part's 38 uA Iq adds negligible drain to duty-cycled sleep budgets, making it ideal for coin-cell or energy-harvesting nodes that spend most of their life in standby. Place input/output ceramic capacitors within 2 mm of the IC pins for best noise performance.
Empfohlen
Post-Regulation After Switching Converter
Placing the RP130N151A-TR-FE downstream of a switching pre-regulator is one of its strongest use cases. A buck converter provides high-efficiency step-down from a 5 V or 12 V rail, and the RP130N151A-TR-FE then removes residual switching ripple to a level that satisfies noise-sensitive analog and RF blocks. The 80 dB PSRR is effective at frequencies up to several hundred kHz, covering the fundamental switching frequency of most low-power buck regulators. This two-stage architecture balances efficiency (switching stage) with low noise (LDO stage) in mixed-signal designs.
Empfohlen
RTC and Backup Domain Supply
The RP130N151A-TR-FE is an excellent supply for the always-on domain of a system, including RTC chips, backup SRAM, and low-power supervisory circuits. Its 1.5 V fixed output matches the operating voltage of many RTC ICs and lithium-coin-cell backup domains. The 38 uA quiescent current minimizes the LDO's own contribution to battery drain, while the built-in current limit and thermal shutdown protect against fault conditions during system power-up. Designers can leave the LDO always enabled and rely on its low Iq for years of standby operation.
Empfohlen
Image Sensor Analog Power Rail
CMOS image sensors in security cameras and machine-vision modules are sensitive to power-rail noise that directly modulates pixel-level output. The RP130N151A-TR-FE delivers the clean 1.5 V analog rail these sensors need, with 80 dB PSRR attenuating upstream switching noise. The SOT-23-5 package allows the LDO to be placed right at the sensor's supply pin, minimizing trace impedance and IR-drop on the analog rail. Its fast line-transient response handles current steps as the sensor's row drivers switch between read and reset states.
Empfohlen
Precision Analog Front-End Supply
For precision analog front-ends such as 16/24-bit ADCs, DACs, and audio codecs, the RP130N151A-TR-FE supplies a clean 1.5 V rail that keeps the analog domain noise floor well below the converter's LSB size. The 80 dB PSRR combined with the low quiescent current enables both low noise and long battery life. Place the LDO as close as possible to the analog supply pin, use a star-ground topology, and add a 0.1 uF bypass cap in parallel with the bulk 1 uF output cap for the lowest impedance at high frequencies.
Empfohlen
Industrial Sensor Module Power
Industrial sensor modules that operate from 24 V or 12 V rails typically need a local low-voltage rail for MCU, ADC, and communication logic. The RP130N151A-TR-FE placed downstream of a wide-input switching converter delivers 1.5 V for analog and digital blocks that share the same PCB. Its CMOS design tolerates small ceramic output capacitors, simplifying BOM, and the SOT-23-5 package withstands standard industrial reflow profiles. Designers should verify the thermal budget because at high VIN-VOUT differential and 150 mA load the SOT-23-5 package can approach its thermal limit.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für RP130N151A-TR-FE – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | RP130N181A-TR-FE | RP130N251A-TR-FE | RP130N281A-TR-FE | RP130N331A-TR-FE | RP130N121A-TR-FE |
|---|---|---|---|---|---|---|
| Package | SOT-23-5 | SOT-23-5 - same | SOT-23-5 - same | SOT-23-5 - same | SOT-23-5 - same | SOT-23-5 - same |
| Brand | Nisshinbo Micro Devices | Nisshinbo Micro Devices | Nisshinbo Micro Devices | Nisshinbo Micro Devices | Nisshinbo Micro Devices | Nisshinbo Micro Devices |
| Output Voltage | 1.5 V | 1.8 V | 2.5 V | 2.8 V | 3.3 V | 1.2 V |
| Output Current (Max) | 150 mA | 150 mA | 150 mA | 150 mA | 150 mA | 150 mA |
| Quiescent Current (Typ.) | 38 uA | 38 uA | 38 uA | 38 uA | 38 uA | 38 uA |
| Ripple Rejection (PSRR) | 80 dB (typ) | 80 dB (typ) | 80 dB (typ) | 80 dB (typ) | 80 dB (typ) | 80 dB (typ) |
| Topology | CMOS LDO, Fixed | CMOS LDO, Fixed | CMOS LDO, Fixed | CMOS LDO, Fixed | CMOS LDO, Fixed | CMOS LDO, Fixed |
Wichtigste Unterscheidungsmerkmale
- Ultra-low 38 uA quiescent current extends battery standby life (vs. Generic 1.5 V LDO with 1-100 uA Iq)
- 80 dB PSRR for clean post-regulation after switching converters (vs. Lower-PSRR LDOs in same SOT-23-5 package)
- Same SOT-23-5 footprint as the entire RP130x voltage family (vs. Different-package LDOs requiring PCB redesign)
Designhinweise
Place the input capacitor (recommended 1 uF ceramic, X7R/X5R) and output capacitor (1 uF ceramic, ESR < 200 mOhm) within 2 mm of the VIN and VOUT pins respectively. Keep the GND pin connected to a low-impedance ground plane via a short, wide trace. Avoid routing noisy digital signals (switching converters, RF traces) directly over the LDO's input or output traces - 80 dB PSRR is meaningless if the input trace itself injects noise. Add a 0.1 uF bypass cap in parallel with the bulk input cap for high-frequency switching noise.
Estimated: At VIN=3.6 V (single Li-ion cell), VOUT=1.5 V, IOUT=150 mA, the LDO dissipates (3.6-1.5)*0.150 = 315 mW. The SOT-23-5 package has a typical theta_JA of ~250 C/W on a 1 oz copper 1-square-inch pad, leading to a junction-temperature rise of ~79 C above ambient. At 25 C ambient the junction runs ~104 C; at 60 C ambient the junction is already ~139 C. For high-temperature or high-VIN designs, ensure the PCB copper pad is at least 10 mm x 10 mm or use multiple vias to the internal ground plane.
Do not use tantalum or aluminum electrolytic output capacitors with high ESR - the LDO requires low-ESR ceramic or film capacitors for stable regulation. Do not operate the LDO with the input voltage below the dropout voltage; output will droop. The CE pin must be driven high for normal operation; if left floating the LDO may start intermittently. Do not exceed the absolute maximum input voltage; consult the datasheet's Electrical Characteristics table for the rated VIN_MAX. Always check the active CE polarity - some RP130x variants are CE-active-high, others are CE-active-low.
Compliance-Informationen
LEAD FREE per digchip.com datasheet excerpt and per DigiKey product page. Other compliance attributes (REACH, halogen-free, conflict-minerals) not stated in the verified web data; treat as unknown unless confirmed against the manufacturer declaration.
