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Nexperia USA Inc. RP131K501D-TR
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- Part No.:
- RP131K501D-TR
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 6-UFDFN Exposed Pad
- Datasheet:
-
RP131K501D-TR.pdf
- Description:
- RP131K - Low Voltage 1A LDO Regu
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
RP131K501D-TR from Ricoh Electronics is a 5.0V fixed-output, 1A low-dropout linear regulator with ultra-low standby current (0.15µA typ.), 1.6V minimum input voltage, and built-in auto-discharge function. It features 70dB ripple rejection at 1kHz, ±1.0% output voltage accuracy, and thermal shutdown at 165°C. Designed for space-constrained portable power rails, it delivers stable 5.0V supply to microcontrollers and sensors in battery-powered cameras and notebook PCs.
For engineers reviewing the RP131K501D-TR datasheet, RP131K501D-TR pinout, RP131K501D-TR application, or RP131K501D-TR equivalent, key selection criteria include dropout voltage at 1A load (0.45V typ. for 5.0V output), ceramic capacitor compatibility (4.7µF min. for VOUT > 3.6V), CE pin active-high logic, and DFN(PL)1820-6 package thermal performance (2200mW PD).
Technical Context
The RP131K501D-TR integrates a low-ON-resistance N-channel pass transistor, error amplifier, precision voltage reference, and chip enable circuitry. Its feedback network is factory-trimmed for 5.0V output, eliminating external resistors. The auto-discharge function actively pulls VOUT to 0V during standby via internal discharge path when CE transitions low.
It employs fold-back current limiting (250mA short-circuit current) and thermal shutdown with hysteresis (165°C trip / 135°C release). Input voltage range (1.6–6.5V) and low dropout enable operation from single-cell Li-ion or dual-cell alkaline sources while maintaining regulation under full 1A load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±1.0% (guaranteed over −40°C to +85°C) |
| Max Output Current | 1A continuous - supports high-current MCU cores and peripheral ICs |
| Dropout Voltage | 0.45V typ. at 5.0V/1A - enables regulation down to 5.45V input |
| Ripple Rejection | 70dB at 1kHz - suppresses switching noise from upstream DC/DC converters |
| Standby Current | 0.15µA typ. - extends battery life in always-on sensor nodes |
| Auto-Discharge | Enabled (D version) - rapidly discharges output capacitor on disable for safe hot-swap |
| Package Thermal PD | 2200mW (DFN(PL)1820-6) - supports 1A load with moderate PCB copper area |
Pinout & Package
RP131K501D-TR uses the DFN(PL)1820-6 surface-mount package (1.8mm × 2.0mm × 0.55mm, exposed thermal pad). This thermally enhanced leadless package enables high-density layout and improved heat dissipation versus standard DFN variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | VOUT | Dual output pins - paralleled internally; must be connected externally for full 1A current handling |
| 3 | GND | Ground reference and thermal path - connect exposed pad to large GND plane |
| 4 | CE | Chip Enable (active-high) - drives VOUT when ≥1.0V; pulls VOUT to 0V via discharge path when low |
| 5, 6 | VDD | Dual input pins - paralleled internally; reduce IR drop and improve PSRR at high load |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout | 0.45V typ. at 5.0V/1A - sustains regulation from 5.45V input, critical for aging batteries |
| Ultra-Low Standby | 0.15µA - reduces quiescent drain by >99% vs. standard LDOs, enabling multi-year battery life |
| Auto-Discharge | Active discharge path (D version) - eliminates residual VOUT after shutdown, preventing latch-up |
| Ceramic Cap Support | Stable with ≥4.7µF X5R/X7R ceramic (VOUT > 3.6V) - avoids costly tantalum or electrolytic caps |
| Thermal Protection | 165°C shutdown with 30°C hysteresis - prevents damage during sustained overload or poor heatsinking |
Applications
| Portable Cameras | Notebook PC Sub-rail |
|---|---|
|
Use Scenario: Powering image sensor, ISP, and flash controller in compact digital cameras. IC Role / Device Role / Timing Role: Primary 5.0V LDO delivering clean, regulated supply independent of battery voltage sag. Use Value: 70dB ripple rejection ensures low-noise analog front-end operation; auto-discharge prevents sensor latch-up during mode switching. |
Use Scenario: Providing auxiliary 5.0V rail for USB-C PD controllers, EC firmware, or touchpad ICs. IC Role / Device Role / Timing Role: Secondary LDO decoupling sensitive logic from noisy main 5V/3.3V switchers. Use Value: 1.6V min. input allows direct connection to buck-boost outputs; 1A rating supports burst-mode peripherals. |
| Wireless Audio Transceivers | Industrial Handheld Scanners |
|
Use Scenario: Supplying Bluetooth/Wi-Fi SoC and audio codec in battery-operated earbuds or speakers. IC Role / Device Role / Timing Role: Low-noise, low-quiescent LDO ensuring RF stability and audio SNR. Use Value: 0.15µA standby current extends playback time between charges; DFN(PL)1820-6 footprint saves board space. |
Use Scenario: Powering barcode scanner engine, MCU, and display driver in rugged handheld terminals. IC Role / Device Role / Timing Role: Robust 1A LDO tolerant of wide input transients and temperature extremes. Use Value: Fold-back current limit (250mA) protects against ESD-induced shorts; thermal shutdown ensures field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RP131K501B-TR | No auto-discharge function; identical electrical specs otherwise | Not suitable where rapid VOUT discharge is required (e.g., hot-swap, safety-critical shutdown) | Select B version only if system design handles residual output voltage externally |
| Torex XC6210B502MR-G | Same 5.0V/1A output, but 1.0µA standby current and no auto-discharge; SOT-25 package | Larger footprint, higher quiescent draw, no discharge path - limits use in ultra-low-power or safety-critical systems | Choose only if DFN(PL)1820-6 is unavailable and 0.15µA standby is not required |
Compared with RP131K501B-TR and XC6210B502MR-G, the RP131K501D-TR uniquely combines ultra-low standby current, integrated auto-discharge, and thermally optimized DFN(PL)1820-6 packaging-enabling longer battery life and safer power sequencing in space-constrained portable designs.
Availability
RP131K501D-TR is available at Aetrix Electronics and suitable for portable cameras, notebook PC sub-rails, wireless audio transceivers, and industrial handheld scanners requiring stable component supply with guaranteed long-term availability.
Supply support for RP131K501D-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, including LDOs, DC/DC converters, and battery protection devices for consumer, industrial, and automotive markets.
The RP131x series targets high-efficiency, low-noise power regulation in battery-powered and space-constrained applications, emphasizing ultra-low quiescent current, fast transient response, and robust protection features.
FAQ
What is the minimum input voltage required for RP131K501D-TR to regulate 5.0V output?
The RP131K501D-TR requires a minimum input voltage of 1.6V, but to maintain 5.0V regulation at 1A load, VIN must exceed VOUT + dropout voltage (5.0V + 0.45V = 5.45V typ.). Below this, output voltage drops linearly with input.
Can RP131K501D-TR operate with a 2.2µF output capacitor?
No. For VOUT = 5.0V (>3.6V), the datasheet specifies a minimum 4.7µF ceramic capacitor. Using 2.2µF risks instability, poor transient response, and potential oscillation due to insufficient phase margin.
How does the auto-discharge function behave during CE pin deactivation?
When CE transitions from high to low, an internal NMOS transistor connects VOUT to GND, discharging the output capacitor. Turn-off speed is typically 100µs with 4.7µF COUT, ensuring rapid, controlled VOUT decay without external components.
Is thermal derating required for continuous 1A operation in the DFN(PL)1820-6 package?
Yes. With 2200mW maximum power dissipation, continuous 1A operation at 5.0V output requires ≤0.45V dropout (VIN ≤ 5.45V) and adequate PCB copper area (≥100mm² GND pour under exposed pad) to maintain junction temperature ≤125°C.
RP131K501D-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- RP131x
- Package/Case:
- 6-UFDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.65V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN(PL)1820-6
RP131K501D-TR FAQ
1.How can I place an order for RP131K501D-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for RP131K501D-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 RP131K501D-TR reliable?
The price and inventory of RP131K501D-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RP131K501D-TR is usually 5 days.
3.What payment methods are accepted for RP131K501D-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RP131K501D-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RP131K501D-TR?
RP131K501D-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RP131K501D-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 RP131K501D-TR?
For technical support, including RP131K501D-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RP131K501D-TR requirements.
6.How does Aetrix verify that RP131K501D-TR is sourced from the original manufacturer or authorized distributors?
All RP131K501D-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 RP131K501D-TR meets industry standards.
7.What is the process for return or replacement of RP131K501D-TR?
All RP131K501D-TR units undergo pre-shipment inspection (PSI). If there is an issue with RP131K501D-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 RP131K501D-TR part is unused and in its original packaging.
Return procedure for RP131K501D-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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