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

Nexperia USA Inc. RP170N361D-TR-FE

Name: RP170N361D-TR-FE
Brand: Nexperia USA Inc.
SKU: RP170N361D-TR-FE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: RP170N361D-TR-FE

Manufacturer:: Nexperia USA Inc.

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

Package:: -

Datasheet:: RP170N361D-TR-FE.pdf

Description:: RP170N - 10V Input 300mA LDO Reg

Quantity:: RFQ Add To RFQ list

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Inventory:3,000

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Product details

Overview

RP170N361D-TR-FE from Ricoh Electronics is a 300mA, 10V-input LDO regulator with fixed 3.6V output, SC-88A (SOT-457) package, ±1.0% output voltage accuracy, 23µA typical quiescent current, and integrated auto-discharge function for rapid output discharge during standby. It serves as a low-noise, high-PSRR power source in battery-powered portable equipment such as digital cameras and camcorders.

For engineers reviewing the RP170N361D-TR-FE datasheet, RP170N361D-TR-FE pinout, RP170N361D-TR-FE application, or RP170N361D-TR-FE equivalent, key selection criteria include dropout voltage at 300mA (0.60V typ.), thermal shutdown at 165°C, CE pin active-high control, and compatibility with 1.0µF ceramic output capacitors.

Technical Context

The RP170N361D-TR-FE implements a CMOS-based LDO architecture with internal P-ch MOSFET pass element, enabling low dropout and ultra-low quiescent current. Its built-in constant-slope soft-start circuit suppresses inrush current during enable transitions.

This D-version variant integrates an N-channel auto-discharge transistor (R_LOW = 250Ω typ.) between VOUT and GND, activated when CE is pulled low to rapidly discharge external output capacitance - critical for system-level power sequencing and leakage-sensitive applications.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 3.6V ±1.0% (25°C), ±2.3% over −40°C to +85°C - ensures stable MCU core or sensor rail under temperature variation.
Max Input Voltage	10.0V - supports direct regulation from 2-cell Li-ion (8.4V max) or 9V alkaline stacks without pre-regulation.
Dropout Voltage	0.60V typ. at I_OUT = 300mA, V_OUT = 3.6V - enables >3.0V output from ≥3.6V input, maximizing battery runtime.
Ripple Rejection	70dB typ. at 1kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input.
Supply Current	23µA typ. active, 0.1µA typ. standby - extends shelf life and operational time in always-on sensor nodes.
Thermal Shutdown	165°C junction temperature - protects against sustained overload or poor PCB thermal design without latch-up.
Auto-Discharge	Active when CE = low; discharges VOUT to 0V via 250Ω path - eliminates residual voltage that could cause logic glitches or leakage in powered-off subsystems.

Pinout & Package

RP170N361D-TR-FE uses the SC-88A (SOT-457) 5-pin surface-mount package - compact (2.0 × 2.1 × 0.9 mm), thermally enhanced for 380mW dissipation on standard FR-4 PCBs.

Pin/Terminal	Circuit Role	Design Meaning
1 (CE)	Chip Enable Input	Active-high logic control; pulls VOUT to 0V via internal discharge FET when low - enables precise power gating.
2 (NC)	No Connection	Internally unconnected; must remain floating or grounded per layout guidelines - no routing or soldering required.
3 (GND)	Ground Reference	Primary return path for load current and bias circuits; requires low-impedance PCB plane connection for stability.
4 (VOUT)	Regulated Output	Delivers 3.6V to load; requires ≥1.0µF ceramic capacitor placed adjacent to pin for phase compensation and transient response.
5 (VDD)	Input Supply	Accepts 2.6–10.0V; needs local 1.0µF ceramic decoupling capacitor placed within 2mm of this pin to suppress input ripple.

Key Features

Feature	Design Value
Ultra-Low Quiescent Current	23µA active / 0.1µA standby - enables multi-year operation in coin-cell–powered IoT endpoints.
Integrated Auto-Discharge	250Ω discharge path activated by CE low - eliminates need for external MOSFET or resistor network in power sequencing designs.
High PSRR at 1kHz	70dB - maintains clean 3.6V rail even when powered from noisy switcher outputs (e.g., buck converter at 500kHz).
Stable with Ceramic Capacitors	Designed for ≥1.0µF X5R/X7R MLCC at VOUT - reduces BOM count and board area vs. tantalum or electrolytic alternatives.
Thermal & Foldback Protection	165°C shutdown + 40mA short-circuit current limit - prevents damage during output fault or PCB trace short.

Applications

Digital Camera Power Management

Portable Medical Sensor Node

Use Scenario: Powers image sensor, ISP, and SD card interface in compact digital cameras operating from dual-cell Li-ion batteries.

IC Role / Device Role / Timing Role: Primary 3.6V LDO delivering regulated supply to analog front-end and digital logic blocks with low noise and fast transient response.

Use Value: 70dB PSRR rejects noise from camera flash charging circuits; 0.6V dropout extends usable battery range down to 4.2V cell voltage.

Use Scenario: Supplies ultra-low-power microcontroller and biosensor ASIC in wearable ECG patch with multi-month battery life.

IC Role / Device Role / Timing Role: Always-on 3.6V regulator with CE-controlled shutdown and auto-discharge to eliminate leakage paths during sleep modes.

Use Value: 0.1µA standby current minimizes quiescent drain; auto-discharge ensures zero residual voltage on sensor analog inputs during deep sleep.

Wireless Audio Earbud Charging Case

Industrial Handheld Scanner

Use Scenario: Provides clean 3.6V rail to Bluetooth SoC and charging management IC inside compact earbud charging case.

IC Role / Device Role / Timing Role: Secondary LDO regulating from 5V USB input or 7.4V Li-poly battery, with CE synchronized to system power state.

Use Value: Soft-start prevents inrush into large output caps; 10V max input accommodates unregulated battery voltage during full charge.

Use Scenario: Powers barcode imager module and ARM Cortex-M4 MCU in rugged handheld scanner using 2xAA or rechargeable pack.

IC Role / Device Role / Timing Role: Main system LDO delivering stable 3.6V to imaging sensor, laser driver, and RF transceiver under wide input voltage swing.

Use Value: ±1.0% output accuracy ensures consistent ADC reference and laser diode bias; thermal shutdown guards against enclosure overheating.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1703T-3602E/MB	300mA, 3.6V fixed, 2.3µA IQ, no auto-discharge, SOT-23-5	Lacks CE-controlled discharge; requires external circuit for VOUT bleed	Select when ultra-low IQ dominates over discharge requirement and SOT-23-5 footprint is preferred.
Torex XC6219B362MR-G	300mA, 3.6V fixed, 1.0µA IQ, no auto-discharge, SOT-25	Lower IQ but no discharge path; different pinout (CE on pin 3 vs. pin 1)	Choose for lowest possible standby current where auto-discharge is handled externally or not needed.

Compared with MCP1703T-3602E/MB and XC6219B362MR-G, RP170N361D-TR-FE uniquely integrates a dedicated 250Ω auto-discharge FET controlled by CE - eliminating external components while ensuring sub-millisecond VOUT decay, critical for systems requiring strict power domain isolation.

Availability

RP170N361D-TR-FE is available at Aetrix Electronics and suitable for digital cameras, portable medical sensors, wireless audio accessories, and industrial handheld scanners requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for RP170N361D-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, Inc. is a Japanese semiconductor manufacturer specializing in power management ICs, including LDO regulators, DC/DC converters, and battery management solutions for portable and industrial applications.

The RP170x series was designed specifically for space-constrained, battery-powered portable electronics requiring ultra-low quiescent current, high PSRR, and integrated power-control features like auto-discharge and soft-start.

FAQ

What is the purpose of the auto-discharge function in RP170N361D-TR-FE?

The auto-discharge function activates an internal 250Ω N-channel transistor between VOUT and GND when the CE pin is driven low, rapidly discharging external output capacitance to 0V. This prevents residual voltage from causing logic contention, false wake-ups, or leakage in downstream circuits during system standby - eliminating the need for external discharge resistors or MOSFETs.

Can RP170N361D-TR-FE operate with input voltages below 2.6V?

No. The absolute minimum input voltage is 2.6V per the Recommended Operating Conditions. Operation below this threshold may result in loss of regulation, increased dropout, or failure to maintain 3.6V output. For sub-2.6V applications, consider Ricoh's RP114x series or alternative ultra-low-VIN LDOs.

Is a minimum 1.0µF ceramic capacitor mandatory at the VOUT pin?

Yes. The RP170N361D-TR-FE requires ≥1.0µF ceramic capacitor (X5R/X7R) placed directly at the VOUT pin for phase compensation and stability. Using smaller values or non-ceramic types (e.g., tantalum) risks oscillation, poor load transient response, or startup failure - as confirmed in the Typical Application section and ESR vs. Output Current graph.

How does the CE pin behavior differ between RP170N361D-TR-FE and the B-version (no auto-discharge)?

In the D-version, CE = low enables both shutdown *and* activation of the internal discharge FET, pulling VOUT to GND. In the B-version, CE = low only disables regulation - VOUT floats or holds residual voltage via load leakage. The D-version's CE pin thus provides true power-domain reset capability, while the B-version requires external discharge circuitry for equivalent functionality.

RP170N361D-TR-FE Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: -

Packaging:: Bulk

Product Status:: Obsolete

Output Configuration:: -

Output Type:: -

Number of Regulators:: -

Voltage - Input (Max):: -

Voltage - Output (Min/Fixed):: -

Voltage - Output (Max):: -

Voltage Dropout (Max):: -

Current - Output:: -

Current - Quiescent (Iq):: -

Current - Supply (Max):: -

PSRR:: -

Control Features:: -

Protection Features:: -

Operating Temperature:: -

Grade:: -

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Supplier Device Package:: -

RP170N361D-TR-FE FAQ

1.How can I place an order for RP170N361D-TR-FE through Aetrix?

Please submit a Request for Quotation (RFQ) for RP170N361D-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 RP170N361D-TR-FE reliable?

The price and inventory of RP170N361D-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 RP170N361D-TR-FE is usually 5 days.

3.What payment methods are accepted for RP170N361D-TR-FE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RP170N361D-TR-FE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for RP170N361D-TR-FE?

RP170N361D-TR-FE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your RP170N361D-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 RP170N361D-TR-FE?

For technical support, including RP170N361D-TR-FE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RP170N361D-TR-FE requirements.

6.How does Aetrix verify that RP170N361D-TR-FE is sourced from the original manufacturer or authorized distributors?

All RP170N361D-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 RP170N361D-TR-FE meets industry standards.

7.What is the process for return or replacement of RP170N361D-TR-FE?

All RP170N361D-TR-FE units undergo pre-shipment inspection (PSI). If there is an issue with RP170N361D-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 RP170N361D-TR-FE part is unused and in its original packaging.

Return procedure for RP170N361D-TR-FE:

1.Submit a request within 90 days.

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

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