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

Nexperia USA Inc. RP118Z311D-TR-F

Name: RP118Z311D-TR-F
Brand: Nexperia USA Inc.
SKU: RP118Z311D-TR-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: RP118Z311D-TR-F

Manufacturer:: Nexperia USA Inc.

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

Package:: 4-XFBGA, WLCSP

Datasheet:: RP118Z311D-TR-F.pdf

Description:: RP118Z - 100mA Low Supply Curren

Quantity:: RFQ Add To RFQ list

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Product details

Overview

RP118Z311D-TR-F from Ricoh Electronics is an ultra-low-quiescent-current LDO voltage regulator delivering 3.1 V output at up to 100 mA, featuring 0.2 µA typical supply current and 0.002 µA standby current in WLCSP-4-P8 (0.64 mm × 0.64 mm) package. It enables multi-year battery life in space-constrained wearable sensors and Bluetooth Low Energy nodes powered by coin cells or Li-ion batteries.

For engineers reviewing the RP118Z311D-TR-F datasheet, RP118Z311D-TR-F pinout, RP118Z311D-TR-F application, or RP118Z311D-TR-F equivalent, key selection criteria include guaranteed ±0.8% output accuracy across −40°C to +85°C, 0.1 V dropout at 100 mA, auto-discharge functionality on CE deactivation, and ceramic capacitor compatibility with ≥1.0 µF C_OUT.

Technical Context

The RP118Z311D-TR-F implements dual-mode operation-automatically switching between fast-response mode (for load transients ≥1.5 mA) and ultra-low-power mode (for loads ≤0.08 mA)-to optimize efficiency without external control. Its internal fold-back current limit (50 mA short-circuit protection) and CE-active-high logic with auto-discharge (enabled by 'D' suffix) ensure safe power sequencing in energy-harvesting and intermittent-operation systems.

Designed for minimal board area, it uses a WLCSP-4-P8 package with direct die-to-board interconnects and requires no external compensation. The regulator maintains stability with 1.0 µF ceramic capacitors on both input and output, eliminating ESR dependency and enabling use with low-ESR MLCCs while rejecting ripple up to 120 dB at 100 Hz.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	3.100 V ±0.8% (guaranteed over −40°C to +85°C; supports precision sensor biasing)
Supply Current	0.2 µA typ. (enables >10-year shelf life on 220 mAh coin cell at 1 µA system load)
Standby Current	0.002 µA typ. (achieved when CE = low; critical for zero-power sleep states)
Dropout Voltage	0.100 V typ. at 100 mA (allows regulation down to 3.2 V input for 3.1 V output)
Input Voltage Range	1.7 V to 5.5 V (supports single-cell Li-ion, alkaline, and coin-cell sources)
Output Accuracy	±0.8% (tight tolerance reduces need for post-regulation trimming in medical wearables)
Auto-discharge	Enabled ('D' version discharges V_OUT via internal NMOS when CE = low; prevents residual voltage hold-up)

Pinout & Package

RP118Z311D-TR-F uses the WLCSP-4-P8 package (0.64 mm × 0.64 mm, 0.4 mm pitch), optimized for ultra-dense PCB layouts in wearables. The bottom-side solder bumps provide low-inductance GND connection and thermal path to the PCB ground plane.

Pin/Terminal	Circuit Role	Design Meaning
A1	VDD	Main input power pin; accepts 1.7–5.5 V; requires ≥1.0 µF ceramic bypass capacitor
A2	VOUT	Regulated 3.1 V output; connects to load and ≥1.0 µF ceramic output capacitor
B1	CE	Active-high chip enable; rising edge initiates startup with controlled inrush; falling edge triggers auto-discharge
B2	GND	Ground reference; electrically tied to substrate tab; must connect to solid PCB ground plane

Key Features

Feature	Design Value
Ultra-low quiescent current	0.2 µA typ. supply current extends battery life in always-on IoT endpoints
Auto-discharge function	Internal 50 Ω NMOS discharges V_OUT rapidly when CE is deasserted-eliminates external discharge circuitry
Dual-mode adaptive operation	Seamlessly transitions between fast-response (≥1.5 mA load) and ultra-low-power (≤0.08 mA) modes without external intervention
Stable with 1.0 µF ceramic capacitors	No ESR requirement simplifies BOM and layout; avoids instability risks with tantalum or polymer caps
Guaranteed accuracy over temperature	±0.8% output tolerance maintained from −40°C to +85°C-critical for calibrated biosensors

Applications

SmartBand Power Management

BLE Sensor Node

Use Scenario: Continuous heart-rate monitoring using optical PPG sensor with intermittent BLE advertising.

IC Role / Device Role / Timing Role: Primary 3.1 V supply for analog front-end and BLE SoC during active and sleep cycles.

Use Value: 0.002 µA standby current enables >3-year operation on CR2032; auto-discharge prevents leakage-induced reset faults.

Use Scenario: Environmental sensor node harvesting microwatts from thermoelectric generator, storing energy in supercapacitor.

IC Role / Device Role / Timing Role: Ultra-low-I_Q LDO regulating harvested energy to power MCU and digital sensor interface.

Use Value: 0.2 µA supply current allows regulation at sub-1 µA system loads; 0.1 V dropout maximizes usable energy from low-voltage storage.

Medical Patch Monitor

Industrial Wireless Node

Use Scenario: Disposable ECG patch with 90-day clinical-grade monitoring powered by thin-film Li-ion battery.

IC Role / Device Role / Timing Role: Precision 3.1 V rail for ADC reference and analog signal conditioning circuitry.

Use Value: ±0.8% output accuracy ensures consistent 16-bit ADC performance across temperature; WLCSP footprint saves >60% board area vs. SOT-23.

Use Scenario: Battery-powered vibration sensor in predictive maintenance system operating in −40°C industrial environments.

IC Role / Device Role / Timing Role: Main power regulator for MEMS accelerometer and LoRaWAN transceiver.

Use Value: Guaranteed operation from −40°C to +85°C with stable 3.1 V output; 120 dB ripple rejection suppresses switching noise from DC-DC converters.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Torex XC6210B312MR-G	0.25 µA I_Q, no auto-discharge, SOT-25 package (2.9 mm × 2.8 mm)	Lacks CE-controlled discharge; larger footprint limits ultra-compact designs	Select when auto-discharge is unnecessary and board area is not constrained.
Ricoh RP114Z311D-TR-F	Same WLCSP-4-P8 package, 0.18 µA I_Q, but 50 mA max output current	Lower output current rating restricts use with higher-power BLE SoCs or multi-sensor loads	Select only for sub-50 mA applications where lowest possible I_Q is prioritized over headroom.

Compared with XC6210B312MR-G and RP114Z311D-TR-F, RP118Z311D-TR-F uniquely combines 100 mA output capability, auto-discharge, and 0.64 mm × 0.64 mm WLCSP in a single device-making it optimal for next-gen wearables requiring high integration density and robust power sequencing.

Availability

RP118Z311D-TR-F is available at Aetrix Electronics and suitable for wearable equipment, coin-cell-powered IoT sensors, and low-power RF modules requiring stable component supply with guaranteed long-term availability.

Supply support for RP118Z311D-TR-F 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 power management ICs, optical devices, and sensor solutions for industrial, automotive, and consumer markets.

The RP118x series is designed specifically for ultra-low-power portable electronics-emphasizing nanoscale packaging, sub-microamp quiescent current, and intelligent power-state management for battery longevity.

FAQ

What is the minimum input voltage required for stable 3.1 V output at 100 mA?

The RP118Z311D-TR-F requires a minimum input voltage of 3.2 V to maintain 3.1 V output at full 100 mA load, based on its 0.100 V typical dropout voltage. At lighter loads (<1 mA), it regulates stably down to 1.7 V input, enabling use with partially discharged coin cells.

Does the auto-discharge function require external components?

No. Auto-discharge is fully integrated: when the CE pin is driven low, an internal 50 Ω NMOS switch connects VOUT to GND, discharging the output capacitor without external FETs or resistors. This feature is enabled by the 'D' suffix and operates independently of load conditions.

Can RP118Z311D-TR-F be used with tantalum output capacitors?

No-tantalum capacitors are not recommended. Their high ESR can destabilize the regulator's feedback loop, causing oscillation or poor transient response. The datasheet explicitly requires ≥1.0 µF ceramic capacitors (e.g., Murata GRM155R61A105KE15) for guaranteed stability across all operating conditions.

How does the dual-mode operation affect system-level power budgeting?

The automatic transition between fast-response and ultra-low-power modes eliminates software overhead or external control signals. At light loads (<0.08 mA), it draws only 0.2 µA, reducing average current in duty-cycled systems; at heavy loads (>1.5 mA), it delivers full transient response without compromising regulation-simplifying power modeling for battery-life estimation.

RP118Z311D-TR-F Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: RP118x

Package/Case:: 4-XFBGA, WLCSP

Packaging:: Bulk

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 5.5V

Voltage - Output (Min/Fixed):: 3.1V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.16V @ 100mA

Current - Output:: 100mA

Current - Quiescent (Iq):: 0.5 µA

Current - Supply (Max):: -

PSRR:: -

Control Features:: Enable

Protection Features:: Over Current

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: WLCSP-4-P8

RP118Z311D-TR-F FAQ

1.How can I place an order for RP118Z311D-TR-F through Aetrix?

Please submit a Request for Quotation (RFQ) for RP118Z311D-TR-F 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 RP118Z311D-TR-F reliable?

The price and inventory of RP118Z311D-TR-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RP118Z311D-TR-F is usually 5 days.

3.What payment methods are accepted for RP118Z311D-TR-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RP118Z311D-TR-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for RP118Z311D-TR-F?

RP118Z311D-TR-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your RP118Z311D-TR-F 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 RP118Z311D-TR-F?

For technical support, including RP118Z311D-TR-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RP118Z311D-TR-F requirements.

6.How does Aetrix verify that RP118Z311D-TR-F is sourced from the original manufacturer or authorized distributors?

All RP118Z311D-TR-F 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 RP118Z311D-TR-F meets industry standards.

7.What is the process for return or replacement of RP118Z311D-TR-F?

All RP118Z311D-TR-F units undergo pre-shipment inspection (PSI). If there is an issue with RP118Z311D-TR-F, 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 RP118Z311D-TR-F part is unused and in its original packaging.

Return procedure for RP118Z311D-TR-F:

1.Submit a request within 90 days.

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

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