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Nexperia USA Inc. RP202K131D-TR
- Part No.:
- RP202K131D-TR
- Manufacturer:
- Nexperia USA Inc.
- Package:
- -
- Datasheet:
-
RP202K131D-TR.pdf
- Description:
- RP202K - Automatic ECO Mode Shif
- Quantity:
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Inventory:50,000
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Product details
Overview
RP202K131D-TR from Ricoh Electronics is a 1.3V, 200mA low-dropout linear regulator with auto-switching Fast Mode and Low Power (ECO) Mode, ±1% output voltage accuracy at 25°C, 0.20V dropout at 200mA/2.8V, and 0.1µA standby current. It integrates chip enable (CE), foldback current limiting, soft-start, and auto-discharge functionality-designed for battery-powered portable equipment requiring dynamic load efficiency.
For engineers reviewing the RP202K131D-TR datasheet, RP202K131D-TR pinout, RP202K131D-TR application, or RP202K131D-TR equivalent, key selection criteria include output voltage stability under light-to-heavy load transitions, CE-controlled fast turn-on/off timing, ceramic capacitor compatibility (≥0.47µF), and thermal performance in DFN(PL)1010-4 package.
Technical Context
The RP202K131D-TR implements an adaptive power mode controller that automatically switches between Fast Mode (for >8mA loads) and Low Power Mode (for <2mA loads), maintaining regulated 1.3V output across both states. Its internal architecture includes a precision voltage reference, error amplifier, resistor network for fixed 1.3V output, and constant-slope soft-start circuitry to limit inrush current.
Unlike standard LDOs, it features dual-mode operation with distinct supply current profiles: 50µA at 10mA load (Fast Mode) and 2.5µA at zero load (Low Power Mode), plus 0.1µA in CE-disabled standby. The D-suffix variant adds active auto-discharge via an internal 60Ω N-channel transistor tied to VOUT when CE is deasserted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.3V ±1% (25°C), ±3.5% over −40°C to +85°C - ensures stable core voltage for low-power microcontrollers. |
| Max Output Current | 200mA continuous - supports single-rail power for Bluetooth LE modules or sensor nodes. |
| Dropout Voltage | 0.20V typ. at 200mA/2.8V input - enables regulation from 1.5V sources (e.g., single Li-ion cell down to 2.5V). |
| Supply Current | 2.5µA typ. (IOUT=0mA), 50µA typ. (IOUT=10mA), 0.1µA typ. (standby) - extends battery life in always-on IoT endpoints. |
| Ripple Rejection | 70dB typ. at 1kHz (VOUT=2.8V, IOUT=30mA) - suppresses switching noise from upstream DC/DC converters. |
| Line Regulation | ±0.02%/V typ. (IOUT=10mA) - maintains tight output under input voltage sag during battery discharge. |
| Auto-Discharge | Enabled (D-suffix): 60Ω internal Nch switch discharges VOUT to 0V within µs upon CE deactivation - prevents residual voltage leakage in shutdown systems. |
Pinout & Package
RP202K131D-TR is housed in a 1.0mm × 1.0mm DFN(PL)1010-4 package with exposed thermal pad (GND-connected). The compact footprint supports high-density PCB layouts in space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VOUT | Regulated output terminal | Delivers stable 1.3V; requires ≥0.47µF ceramic capacitor to GND for phase compensation and transient stability. |
| 2 - GND | Ground reference and thermal path | Primary return path; bottom-side thermal tab must be connected to PCB ground plane for 250°C/W θJA thermal performance. |
| 3 - CE | Chip enable input (active-high) | Logic-level control: "H" ≥1.0V enables regulation; "L" ≤0.4V forces standby (0.1µA) and activates auto-discharge (D-version). |
| 4 - VDD | Input power supply | Accepts 1.4V–5.25V; internal foldback protection limits short-circuit current to 60mA. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Fast/Low-Power Mode Switching | Automatically transitions at IOUT ≈1–8mA thresholds to minimize quiescent current without sacrificing transient response. |
| Auto-Discharge Function (D-version) | Internal 60Ω N-channel transistor pulls VOUT to GND within microseconds of CE deactivation - eliminates hold-up voltage in safety-critical shutdowns. |
| Ultra-Low Standby Current | 0.1µA typ. in CE-disabled state - reduces annual battery drain to <1mAh in long-term storage applications. |
| Ceramic Capacitor Compatibility | Stable with ≥0.47µF X5R/X7R ceramics on input/output - eliminates need for costly tantalum or electrolytic capacitors. |
| Soft-Start with Constant Slope | Controlled VOUT ramp rate prevents inrush current spikes during power-up - avoids brownout in shared supply rails. |
Applications
| Wearable Health Monitor | Bluetooth LE Sensor Node |
|---|---|
Use Scenario: Continuous ECG signal acquisition powered by coin-cell battery. IC Role / Device Role / Timing Role: Primary 1.3V supply for ultra-low-power analog front-end and MCU core. Use Value: Auto-switching modes extend battery life >2 years by reducing quiescent current to 2.5µA during sleep cycles while delivering 200mA bursts for ADC sampling. | Use Scenario: Compact environmental sensor transmitting temperature/humidity via BLE every 5 seconds. IC Role / Device Role / Timing Role: Regulated power source enabling rapid wake-from-standby (<10µs CE response) and clean RF transmission. Use Value: 70dB ripple rejection suppresses DC/DC switching noise, ensuring BLE radio sensitivity remains unaffected by shared power rail. |
| Industrial Handheld Scanner | Smart Camera Module |
Use Scenario: Battery-operated barcode scanner with laser diode and imager requiring stable low-noise bias. IC Role / Device Role / Timing Role: Dedicated 1.3V rail for image sensor logic and laser driver control circuitry. Use Value: 0.20V dropout allows operation down to 1.5V input - maximizes usable capacity from partially discharged 1.5V alkaline cells. | Use Scenario: Embedded camera in home security device using always-on motion detection. IC Role / Device Role / Timing Role: Power management for CMOS image sensor and low-power vision processor. Use Value: Auto-discharge (D-version) ensures complete VOUT collapse during deep sleep - prevents phantom current draw through sensor I/O pins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP2112K-1.3TRG1 | Fixed 1.3V, 600mA output, no auto-discharge, higher IQ (60µA) in shutdown | Lacks CE-controlled auto-discharge and adaptive mode switching; suited for higher-current, non-battery-critical use | Select if >200mA peak load required and auto-discharge not needed |
| MCP1700T-1302E/TT | Fixed 1.3V, 250mA, 1.6µA quiescent current, no CE pin or auto-discharge | No enable control or dynamic mode switching; simpler interface but less flexible power-state management | Select for cost-sensitive, always-on applications where CE control is unnecessary |
Compared with AP2112K-1.3TRG1 and MCP1700T-1302E/TT, RP202K131D-TR uniquely combines ultra-low standby current (0.1µA), automatic Fast/ECO mode adaptation, and integrated auto-discharge - making it optimal for battery-powered systems demanding precise power-state control and minimal leakage.
Availability
RP202K131D-TR is available at Aetrix Electronics and suitable for wearable health monitors, Bluetooth LE sensor nodes, industrial handheld scanners, and smart camera modules requiring stable component supply with guaranteed long-term availability.
Supply support for RP202K131D-TR 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 analog solutions for industrial, automotive, and consumer markets.
The RP202x series is designed specifically for battery-powered portable electronics requiring dynamic efficiency optimization, combining low-noise regulation, ultra-low quiescent current, and intelligent load-adaptive operation.
FAQ
What is the minimum input voltage required for RP202K131D-TR to regulate 1.3V output?
The absolute minimum input voltage is 1.4V per datasheet specifications. However, to ensure reliable regulation across temperature and load, VIN must exceed VOUT by at least the dropout voltage - 0.20V typical at 200mA, so ≥1.5V is recommended for full-load operation. At light loads (<1mA), dropout drops below 0.1V, allowing operation down to ~1.41V.
How does the auto-discharge function behave during CE deactivation?
When CE is pulled low, the internal 60Ω N-channel transistor connects VOUT to GND, actively discharging external output capacitance. This collapses VOUT to near-zero volts within microseconds - critical for systems requiring true zero-voltage shutdown, such as medical devices or safety interlocks. Discharge time depends on COUT value (e.g., 1µF discharges in <10µs).
Can RP202K131D-TR operate with a 0.22µF output capacitor?
No - the datasheet explicitly requires ≥0.47µF ceramic capacitor on VOUT for phase compensation and stability. Using 0.22µF risks oscillation, poor transient response, and potential thermal runaway under load. Murata GRM155B31A474KE14 (0.47µF, X5R, 10V) is validated for this device.
What is the thermal resistance (θJA) of the DFN(PL)1010-4 package under standard PCB conditions?
Under the defined standard test land pattern (40mm × 40mm double-sided board, 50% copper coverage), θJA is 250°C/W. This assumes the exposed thermal pad is soldered to a solid GND plane. Without proper thermal pad connection, θJA degrades significantly - potentially exceeding 400°C/W - risking thermal shutdown above 85°C ambient at full 200mA load.
RP202K131D-TR 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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- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
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RP202K131D-TR FAQ
1.How can I place an order for RP202K131D-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for RP202K131D-TR 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 RP202K131D-TR reliable?
The price and inventory of RP202K131D-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RP202K131D-TR is usually 5 days.
3.What payment methods are accepted for RP202K131D-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RP202K131D-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RP202K131D-TR?
RP202K131D-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RP202K131D-TR 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 RP202K131D-TR?
For technical support, including RP202K131D-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RP202K131D-TR requirements.
6.How does Aetrix verify that RP202K131D-TR is sourced from the original manufacturer or authorized distributors?
All RP202K131D-TR 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 RP202K131D-TR meets industry standards.
7.What is the process for return or replacement of RP202K131D-TR?
All RP202K131D-TR units undergo pre-shipment inspection (PSI). If there is an issue with RP202K131D-TR, 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 RP202K131D-TR part is unused and in its original packaging.
Return procedure for RP202K131D-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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