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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Nexperia USA Inc. RP112Q332D-TR-FE

Name: RP112Q332D-TR-FE
Brand: Nexperia USA Inc.
SKU: RP112Q332D-TR-FE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: RP112Q332D-TR-FE

Manufacturer:: Nexperia USA Inc.

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: 5-TSSOP, SC-70-5, SOT-353

Datasheet:: RP112Q332D-TR-FE.pdf

Description:: RP112Q - Low Noise 150mA LDO Reg

Quantity:: RFQ Add To RFQ list

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Inventory:54,000

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Product details

Overview

RP112Q332D-TR-FE from Ricoh Electronics is a low-noise 150 mA LDO regulator with 3.3 V fixed output, ±1.0% accuracy, 10 μV_rms output noise, 80 dB ripple rejection at 1 kHz, and 0.20 V dropout at 150 mA. It features H-active CE pin, auto-discharge function, and operates from 2.0 V to 5.25 V input - designed for RF module and portable audio power rails where ultra-low noise and fast output discharge are critical.

For engineers reviewing the RP112Q332D-TR-FE datasheet, RP112Q332D-TR-FE pinout, RP112Q332D-TR-FE application, or RP112Q332D-TR-FE equivalent, key selection criteria include its SC-88A package, 0.1 µA standby current, ceramic-capacitor compatibility (≥1.0 µF), and guaranteed −40°C to +85°C operation with ±30 ppm/°C temperature coefficient.

Technical Context

The RP112Q332D-TR-FE implements a voltage reference, error amplifier, resistor network for fixed 3.3 V output, current limit circuit, and chip enable logic with built-in foldback protection. Its noise reduction architecture achieves typ. 10 μV_rms across 10 Hz–100 kHz bandwidth.

It uses an internal N-channel transistor with ultra-low on-resistance, enabling 0.20 V dropout at full 150 mA load and supporting stable regulation down to 2.0 V input. The auto-discharge function (enabled in "D" variant) actively discharges the output capacitor via a 60 Ω internal Nch transistor when CE is deasserted.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 3.3 V ±1.0% (guaranteed over −40°C to +85°C)
Max Output Current	150 mA continuous - supports power rail for RF transceivers and audio codecs
Dropout Voltage	Typ. 0.20 V at 150 mA - enables operation from single-cell Li-ion (3.0 V min) with margin
Output Noise	Typ. 10 μV_rms (10 Hz–100 kHz) - meets stringent analog/RF supply requirements
Ripple Rejection	80 dB @ 1 kHz, 75 dB @ 10 kHz - suppresses switching converter noise upstream
Supply Current	Typ. 75 μA active, 0.1 μA standby - extends battery life in always-on sensor nodes
Input Voltage Range	2.0 V to 5.25 V - compatible with Li-ion, Li-Po, and 3.3 V/5 V system rails

Pinout & Package

RP112Q332D-TR-FE is packaged in SC-88A (5-pin, 2.0 mm × 2.1 mm), with exposed pad connected to GND for thermal performance. Pin 4 is NC; pin 5 is VOUT - critical for layout-sensitive RF applications.

Pin/Terminal	Circuit Role	Design Meaning
1	VDD	Main input supply pin - requires local 1.0 µF ceramic decoupling placed adjacent to pin
2	GND	Ground reference for all internal circuits - must be low-impedance connection to PCB ground plane
3	CE	Chip Enable (H-active) - asserts regulator; deassertion triggers auto-discharge via internal 60 Ω Nch
4	NC	No connection - must remain unconnected per design; no routing or soldering allowed
5	VOUT	Regulated 3.3 V output - connects directly to load; output capacitor (≥1.0 µF ceramic) must be placed adjacent

Key Features

Feature	Design Value
Ultra-low output noise	10 μV_rms (10 Hz–100 kHz) - preserves SNR in ADCs, DACs, and RF front-ends
Auto-discharge function	60 Ω internal Nch discharge path - reduces VOUT to 0 V within microseconds after CE deassertion
Ceramic capacitor support	Stable with ≥1.0 µF X5R/X7R ceramics - eliminates need for higher-ESR tantalum or electrolytic caps
High PSRR across frequency	65–80 dB from 100 Hz to 100 kHz - rejects noise from DC-DC converters and digital clocks
Low thermal resistance	SC-88A package with GND-exposed pad - enables 380 mW power dissipation at T_a = 85°C

Applications

RF Transceiver Power

Portable Audio Codec Supply

Use Scenario: Powers 2.4 GHz BLE/Wi-Fi transceiver ICs in wearables and IoT edge nodes.

IC Role / Device Role / Timing Role: Provides ultra-clean 3.3 V bias to RF synthesizer, PA driver, and LNA stages.

Use Value: 10 μV_rms noise and 80 dB PSRR prevent reciprocal mixing and EVM degradation in transmit paths.

Use Scenario: Supplies analog section of stereo audio codec in Bluetooth headphones and voice assistants.

IC Role / Device Role / Timing Role: Delivers low-noise 3.3 V to DAC, headphone amplifier, and microphone bias circuits.

Use Value: Enables >105 dB SNR and <−95 dB THD+N by eliminating switching noise coupling into analog signal chain.

Battery-Operated Sensor Hub

Industrial Wireless Node

Use Scenario: Powers multi-sensor fusion hub (accelerometer, gyroscope, environmental sensors) in coin-cell devices.

IC Role / Device Role / Timing Role: Regulates 3.3 V rail during intermittent wake-up bursts; auto-discharge prevents leakage through sensor I/O.

Use Value: 0.1 μA standby current and fast CE-controlled shutdown extend shelf life beyond 5 years on CR2032.

Use Scenario: Supplies 3.3 V to LoRaWAN or NB-IoT modem and microcontroller in remote industrial telemetry units.

IC Role / Device Role / Timing Role: Maintains stable output across wide input range (2.0–5.25 V) as battery discharges or solar harvests vary.

Use Value: 0.20 V dropout ensures full 150 mA delivery even at end-of-life battery voltage (~2.8 V).

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Torex XC6219B332MR-G	Same SC-88A package, 3.3 V output, but no auto-discharge; 12 μV_rms noise; 70 dB PSRR @ 1 kHz	Lacks fast output discharge - unsuitable where rapid power-down sequencing is required	Select when auto-discharge is unnecessary and cost sensitivity outweighs noise/PSRR margin
Ricoh RP111Q332D-TR-FE	Same family, lower 50 mA rating, identical noise/PSRR specs, same SC-88A footprint and CE behavior	Rated only for ≤50 mA loads - insufficient for RF PAs or multi-sensor hubs drawing >100 mA peak	Choose only for space-constrained, low-current applications where 150 mA headroom is not needed

Compared with XC6219B332MR-G, RP112Q332D-TR-FE delivers 10 dB higher PSRR and integrated auto-discharge - critical for RF and fast-wake systems; versus RP111Q332D-TR-FE, it provides triple the output current capacity while maintaining identical noise and thermal performance in the same footprint.

Availability

RP112Q332D-TR-FE is available at Aetrix Electronics and suitable for RF transceiver power, portable audio codec supply, and battery-operated sensor hub designs requiring stable component supply, long-lifecycle availability, and guaranteed Pb-free/halogen-free compliance.

Supply support for RP112Q332D-TR-FE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Ricoh Electronics is a Japanese semiconductor manufacturer specializing in high-precision power management ICs, including LDOs, DC-DC converters, and battery management solutions for portable and industrial applications.

The RP112x series was designed specifically for noise-sensitive analog and RF subsystems in battery-powered equipment, emphasizing ultra-low noise, fast transient response, and minimal quiescent current without sacrificing output accuracy or thermal robustness.

FAQ

What is the purpose of the NC pin (Pin 4) on RP112Q332D-TR-FE?

Pin 4 is a no-connect terminal - it has no internal connection and must remain unconnected in PCB layout. Routing traces to or placing solder on this pin may cause mechanical stress or unintended parasitic coupling, potentially degrading noise performance or causing functional instability. The SC-88A package uses this pin position solely for mechanical symmetry and thermal pad alignment.

Does RP112Q332D-TR-FE require external compensation components?

No external compensation is required. The RP112Q332D-TR-FE integrates internal phase compensation optimized for stability with ≥1.0 µF ceramic output capacitors. Using tantalum or aluminum electrolytic capacitors is discouraged due to their ESR profile, which can induce oscillation. Layout best practice mandates placing C_OUT within 2 mm of VOUT and GND pins.

How does the auto-discharge function behave during CE deassertion?

When CE transitions from high to low, the internal 60 Ω N-channel transistor activates between VOUT and GND, discharging the output capacitor rapidly. Typical discharge time to <100 mV is under 100 µs for a 1 µF capacitor. This prevents residual voltage from powering downstream circuitry or interfering with reset sequencing in multi-rail systems.

Can RP112Q332D-TR-FE operate with input voltage below 2.0 V?

No. The absolute minimum input voltage is 2.0 V per datasheet specifications. Operation below this threshold risks improper biasing of internal reference and error amplifier circuits, leading to unregulated output, increased noise, or complete dropout. For sub-2.0 V applications, consider Ricoh's RP130x series or alternative ultra-low-V_IN LDOs with verified 1.4 V minimum ratings.

RP112Q332D-TR-FE Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: RP112x

Package/Case:: 5-TSSOP, SC-70-5, SOT-353

Packaging:: Bulk

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 5.25V

Voltage - Output (Min/Fixed):: 3.3V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.28V @ 150mA

Current - Output:: 150mA

Current - Quiescent (Iq):: 100 µA

Current - Supply (Max):: -

PSRR:: 80dB ~ 65dB (1kHz ~ 100kHz)

Control Features:: Enable

Protection Features:: Over Current

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-88A

RP112Q332D-TR-FE FAQ

1.How can I place an order for RP112Q332D-TR-FE through Aetrix?

Please submit a Request for Quotation (RFQ) for RP112Q332D-TR-FE on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for RP112Q332D-TR-FE reliable?

The price and inventory of RP112Q332D-TR-FE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RP112Q332D-TR-FE is usually 5 days.

3.What payment methods are accepted for RP112Q332D-TR-FE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RP112Q332D-TR-FE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for RP112Q332D-TR-FE?

RP112Q332D-TR-FE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your RP112Q332D-TR-FE order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for RP112Q332D-TR-FE?

For technical support, including RP112Q332D-TR-FE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RP112Q332D-TR-FE requirements.

6.How does Aetrix verify that RP112Q332D-TR-FE is sourced from the original manufacturer or authorized distributors?

All RP112Q332D-TR-FE products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that RP112Q332D-TR-FE meets industry standards.

7.What is the process for return or replacement of RP112Q332D-TR-FE?

All RP112Q332D-TR-FE units undergo pre-shipment inspection (PSI). If there is an issue with RP112Q332D-TR-FE, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The RP112Q332D-TR-FE part is unused and in its original packaging.

Return procedure for RP112Q332D-TR-FE:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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