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Nexperia USA Inc. RP130K351D-TR
- Part No.:
- RP130K351D-TR
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
RP130K351D-TR.pdf
- Description:
- RP130K - Low Noise 150mA LDO Reg
- Quantity:
- Payment:
- Shipping:
Inventory:50,000
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Product details
Overview
RP130K351D-TR from Nisshinbo Micro Devices is a low-noise, 150 mA CMOS LDO regulator with fixed 3.5 V output, ±1.0% accuracy (VOUT > 2.0 V), 0.32 V dropout at 150 mA, 38 µA typical supply current, and active-high chip enable with auto-discharge function-designed for battery-powered portable communication equipment requiring stable low-power biasing.
For engineers reviewing the RP130K351D-TR datasheet, RP130K351D-TR pinout, RP130K351D-TR application, or RP130K351D-TR equivalent, key selection criteria include its DFN(PL)1010-4 package, 1.7–6.5 V input range, 80 dB ripple rejection at 1 kHz, ±20 ppm/°C temperature drift, and integrated fold-back protection for load transient resilience in space-constrained IoT sensor nodes and wearables.
Technical Context
The RP130K351D-TR implements a CMOS-based error amplifier with internal voltage reference and resistor network for precise 3.5 V regulation, coupled with low-on-resistance pass transistor enabling sub-0.35 V dropout. Its architecture integrates a dedicated CE control path that triggers rapid auto-discharge via a 30 Ω N-ch switch when disabled.
Transient response is optimized through internal phase compensation tuned for ≥0.47 µF ceramic output capacitors; the IC maintains stability without external compensation while delivering <20 µVrms output noise (10 Hz–100 kHz) and improved load/input step recovery versus legacy R1114x series regulators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.5 V ±1.0% (at Ta = 25°C, VOUT > 2.0 V), enabling precision biasing of RF front-ends and ADC references. |
| Dropout Voltage | Typ. 0.32 V at 150 mA output (VOUT = 3.5 V), allowing operation down to VIN = 3.82 V-critical for single-cell Li-ion or dual-cell alkaline systems. |
| Ripple Rejection | Typ. 80 dB at 1 kHz, suppressing switching noise from upstream DC/DC converters in mixed-signal power domains. |
| Supply Current | Typ. 38 µA in active mode, reducing quiescent power loss in always-on subsystems like real-time clocks or wake-up controllers. |
| Standby Current | Typ. 0.1 µA when CE = low (active-high enable), extending battery life in deep-sleep states of portable devices. |
| Output Noise | 20 × VSET = 70 µVrms (10 Hz–100 kHz), meeting low-noise requirements for audio codecs and precision analog sensors. |
| Auto-Discharge | Enabled via CE high-to-low transition; 30 Ω internal N-ch switch discharges output capacitor rapidly-prevents residual voltage from interfering with system reset sequencing. |
Pinout & Package
RP130K351D-TR uses the DFN(PL)1010-4 package (1.0 mm × 1.0 mm, 0.4 mm pitch), featuring an exposed thermal pad on the bottom side connected to GND-recommended for PCB thermal relief and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Regulated 3.5 V output; requires ≥0.47 µF ceramic capacitor placed adjacent to pin for stability and transient response. |
| 2 | GND | Analog/digital ground reference; must be tied directly to PCB ground plane-exposed thermal pad (bottom) is electrically GND. |
| 3 | CE | Active-high chip enable; logic high enables regulation, logic low disables output and activates auto-discharge circuit. |
| 4 | VDD | Input supply (1.7–6.5 V); requires ≥0.47 µF ceramic decoupling capacitor placed as close as possible to this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 38 µA typical active supply current enables >1-year battery life in 10 µA average-load IoT endpoints. |
| Integrated auto-discharge | 30 Ω N-ch switch discharges output capacitor within microseconds upon disable-eliminates need for external bleed resistors in reset-critical applications. |
| High PSRR at 1 kHz | 80 dB rejection ensures clean 3.5 V rail for noise-sensitive analog blocks even when powered from noisy buck converters. |
| Wide input voltage range | 1.7–6.5 V operation supports direct connection to LiFePO₄, Li-ion, or multi-cell alkaline sources without pre-regulation. |
| Low-output-noise design | 70 µVrms (10 Hz–100 kHz) meets stringent requirements for RF synthesizers and high-resolution SAR ADC references. |
Applications
| Portable Medical Sensors | Wearable Fitness Trackers |
|---|---|
Use Scenario: Powering optical heart-rate monitor (PPG) analog front-end and low-power MCU in wrist-worn device. IC Role / Device Role / Timing Role: Provides ultra-low-noise 3.5 V bias for photodiode transimpedance amplifier and ADC reference, synchronized to motion-sensing interrupt timing. Use Value: 70 µVrms noise floor prevents signal corruption in sub-microamp photocurrent measurements; 0.1 µA standby current extends recharge interval to 14+ days. |
Use Scenario: Supplying Bluetooth LE radio, accelerometer, and OLED display controller in compact wearable form factor. IC Role / Device Role / Timing Role: Delivers regulated 3.5 V during BLE transmit bursts and enters ultra-low-power standby between advertisements. Use Value: 0.32 V dropout allows full functionality down to 3.82 V battery voltage; auto-discharge ensures clean power-down sequence before sleep mode entry. |
| Industrial Wireless Sensor Nodes | Smart Home Audio Peripherals |
Use Scenario: Biasing LoRaWAN transceiver and environmental sensor array (temp/humidity/pressure) in battery-operated gateway node. IC Role / Device Role / Timing Role: Supplies stable 3.5 V rail during 100 ms transmit windows and maintains <0.1 µA leakage during 2-minute listen-before-talk intervals. Use Value: 80 dB PSRR isolates RF section from digital switching noise on shared PCB; DFN(PL)1010-4 footprint minimizes board area in constrained enclosure. |
Use Scenario: Powering MEMS microphone preamplifier and DSP in voice-controlled smart speaker accessory. IC Role / Device Role / Timing Role: Regulates clean 3.5 V for analog microphone bias and low-jitter clock generation circuitry. Use Value: ±1.0% output accuracy ensures consistent gain calibration across production units; ±20 ppm/°C drift maintains SNR over −25°C to 70°C ambient range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP2112K-3.5TRG1 | No auto-discharge; 60 dB PSRR at 1 kHz; 65 µA typical IQ; SOT-23-5 package. | Lacks rapid output discharge-requires external circuitry for controlled power-down in reset-sensitive systems. | Select when board space permits SOT-23-5 and auto-discharge is unnecessary; verify PSRR margin against switching noise spectrum. |
| MCP1700T-3502E/TT | 2.3 µA IQ; no CE pin; 100 mA max output; SOT-23-3 package. | Unregulated shutdown behavior; insufficient current for 150 mA peak loads like BLE transmission. | Only suitable for ultra-low-power always-on monitoring (e.g., temperature logging), not burst-mode wireless comms. |
Compared with AP2112K-3.5TRG1 and MCP1700T-3502E/TT, RP130K351D-TR uniquely combines 150 mA capability, 80 dB PSRR, auto-discharge, and DFN(PL)1010-4 size-making it optimal for space-constrained, battery-powered wireless edge nodes demanding clean, controllable power sequencing.
Availability
RP130K351D-TR is available at Aetrix Electronics and suitable for portable medical sensors, wearable fitness trackers, industrial wireless sensor nodes, and smart home audio peripherals requiring stable component supply with guaranteed long-term manufacturability.
Supply support for RP130K351D-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
Nisshinbo Micro Devices is a Japanese semiconductor company specializing in high-performance analog ICs, including LDOs, voltage detectors, and LED drivers, with emphasis on low-noise, low-power, and automotive-grade reliability.
The RP130x series was designed specifically for battery-powered portable electronics needing ultra-low IQ, high PSRR, and precise output accuracy-targeting applications where extended runtime and signal integrity are non-negotiable.
FAQ
What is the minimum input voltage required for RP130K351D-TR to maintain 3.5 V output at 150 mA load?
The dropout voltage is typ. 0.32 V at 150 mA, so minimum input voltage is 3.5 V + 0.32 V = 3.82 V. Absolute minimum operating VIN is 1.7 V, but regulation fails below 3.82 V under full load. Input must remain ≥3.82 V to sustain 3.5 V output at rated current.
Does RP130K351D-TR require external compensation components?
No external compensation is required. The IC is internally compensated for stability with ≥0.47 µF ceramic output capacitors. Using tantalum or aluminum electrolytic capacitors with high ESR may cause oscillation-only ceramic types meeting the 0.47 µF minimum and low-ESR specification are recommended.
How does the auto-discharge function operate, and what is its typical discharge time?
When CE transitions from high to low, the internal 30 Ω N-ch switch connects VOUT to GND, discharging external capacitors. For a 4.7 µF output capacitor, typical discharge time to <100 mV is <150 µs. Discharge speed scales inversely with capacitance and is independent of load current during discharge.
Can RP130K351D-TR be used with input voltages above 6.5 V?
No. The absolute maximum input voltage is 7.0 V, but recommended operating VIN is strictly 1.7–6.5 V. Operation above 6.5 V violates recommended conditions and risks parametric shift or accelerated degradation-even brief exposure to 6.6 V or higher is not advised per datasheet limits.
RP130K351D-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- RP130x
- Package/Case:
- 4-UDFN 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):
- 3.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.51V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 58 µA
- Current - Supply (Max):
- -
- PSRR:
- 80dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN(PL)1010-4
RP130K351D-TR FAQ
1.How can I place an order for RP130K351D-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for RP130K351D-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 RP130K351D-TR reliable?
The price and inventory of RP130K351D-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RP130K351D-TR is usually 5 days.
3.What payment methods are accepted for RP130K351D-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RP130K351D-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RP130K351D-TR?
RP130K351D-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RP130K351D-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 RP130K351D-TR?
For technical support, including RP130K351D-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RP130K351D-TR requirements.
6.How does Aetrix verify that RP130K351D-TR is sourced from the original manufacturer or authorized distributors?
All RP130K351D-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 RP130K351D-TR meets industry standards.
7.What is the process for return or replacement of RP130K351D-TR?
All RP130K351D-TR units undergo pre-shipment inspection (PSI). If there is an issue with RP130K351D-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 RP130K351D-TR part is unused and in its original packaging.
Return procedure for RP130K351D-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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