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STMicroelectronics LDK130PU10R
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- Part No.:
- LDK130PU10R
- Manufacturer:
- STMicroelectronics
- Package:
- 6-XFDFN
- Datasheet:
-
LDK130PU10R.pdf
- Description:
- IC REG LINEAR 1V 300MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,999
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Product details
Overview
LDK130PU10R from STMicroelectronics is an AEC-Q100 Grade 1 automotive-qualified low-dropout linear regulator delivering 300 mA output current with 100 mV typical dropout at 100 mA, 30 µA typical quiescent current, ±2.0% output voltage tolerance at 25 °C, and operation from 1.9 V to 5.5 V input in SOT23-5L package. It serves as a precision power supply for ADAS sensor modules requiring ultra-low noise and stable bias under wide temperature and load variation.
For engineers reviewing the LDK130PU10R datasheet, LDK130PU10R pinout, LDK130PU10R application, or LDK130PU10R equivalent, key selection criteria include automotive-grade thermal robustness (−40 °C to 125 °C), logic-controlled shutdown (<1 µA OFF current), ceramic capacitor compatibility (1 µF COUT), and fixed 1.0 V output voltage - critical for powering low-voltage microcontrollers and image signal processors in safety-critical systems.
Technical Context
The LDK130PU10R implements a PMOS pass transistor architecture enabling ultra-low dropout and high PSRR (55 dB at 120 Hz–10 kHz) without external compensation. Its internal bandgap reference and error amplifier maintain tight regulation across load (1 mA–300 mA) and line (1.9 V–5.5 V) variations while supporting fast transient response during camera sensor burst-mode operation.
Logic-controlled enable functionality provides precise system-level power sequencing, and integrated thermal shutdown (160 °C trip with 20 °C hysteresis) plus short-circuit current limiting (450 mA typ.) ensure fault resilience in automotive power domains where ambient temperature swings and EMI are severe.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.0 V ±2.0% at 25 °C - ensures stable core voltage for 1.0 V I/O domains in automotive MCUs. |
| Dropout Voltage | 100 mV typ. at 100 mA - enables operation down to VIN = 1.1 V, extending battery runtime in 1.2 V Li-ion systems. |
| Quiescent Current | 30 µA typ. (active), <1 µA (shutdown) - minimizes standby drain in always-on ADAS modules. |
| Noise Performance | 51 µVRMS (10 Hz–100 kHz) - prevents switching noise coupling into analog sensor front-ends. |
| PSRR | 55 dB (120 Hz–10 kHz) - suppresses ripple from upstream DC/DC converters feeding camera power rails. |
| Operating Temp. | −40 °C to +125 °C junction - validated for engine bay and radar module placement per AEC-Q100 Grade 1. |
| Output Capacitor | 1 µF ceramic (min.) - eliminates need for bulky tantalum, reducing BOM cost and board area. |
Pinout & Package
SOT23-5L package: 2.9 mm × 1.6 mm × 1.1 mm body, 0.95 mm pitch, thermally enhanced exposed pad (Pin 5 N/C tied to GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input voltage supply | Accepts 1.9–5.5 V DC; requires local 1 µF ceramic decoupling to minimize high-frequency impedance. |
| 2 (GND) | Power ground reference | Must be connected to low-impedance PCB ground plane; shares return path with output capacitor. |
| 3 (EN) | Enable logic control input | Active-high; 1.2 V min. logic high, 0.4 V max. logic low - compatible with 1.8 V/3.3 V GPIOs. |
| 4 (BYP/ADJ) | Bypass/adjust node | Fixed version: optional 10 nF bypass cap for noise reduction; leave floating if unused. |
| 5 (OUT) | Regulated output voltage | Delivers 1.0 V ±2.0% at up to 300 mA; connects directly to load with minimal trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use up to 125 °C junction, including temperature cycling and HTOL stress. |
| Ultra-low-noise regulation | 51 µVRMS output noise enables clean power for CMOS image sensors and ADC reference supplies. |
| Logic-controlled shutdown | Reduces total system current to <1 µA - essential for ISO 26262 ASIL-B compliant sleep modes. |
| Ceramic capacitor stability | Stable with 1 µF X7R/X5R ceramics (ESR < 100 mΩ), eliminating electrolytic/tantalum reliability risks. |
| Internal protection | Thermal shutdown (160 °C) + current limit (450 mA) prevent latch-up during load faults or overtemp. |
Applications
| ADAS Camera Module Power | Radar Signal Processor Bias |
|---|---|
|
Use Scenario: Powers 1.0 V core rail of automotive-grade image signal processor (ISP) in forward-facing camera. IC Role / Device Role / Timing Role: Primary low-noise LDO supplying regulated 1.0 V at up to 300 mA with <100 mV dropout during cold cranking. Use Value: Maintains ISP functional safety integrity by rejecting ripple from 5 V buck converter and sustaining regulation down to 1.1 V input. |
Use Scenario: Supplies 1.0 V analog front-end (AFE) and PLL core in 77 GHz radar transceiver SoC. IC Role / Device Role / Timing Role: Low-noise bias source ensuring phase noise floor remains below −100 dBc/Hz at 1 MHz offset. Use Value: 51 µVRMS noise prevents spurious sidebands in RF synthesis, preserving radar range resolution. |
| Automotive Infotainment MCU Core | Telematics Cellular Modem I/O |
|
Use Scenario: Provides 1.0 V core voltage to ARM Cortex-R5F MCU in digital cluster domain controller. IC Role / Device Role / Timing Role: High-PSRR LDO isolating MCU core from noisy 3.3 V system rail during CAN/FlexRay communication bursts. Use Value: 55 dB PSRR suppresses switching noise from adjacent DC/DC, preventing timing jitter on clock-sensitive peripherals. |
Use Scenario: Delivers 1.0 V I/O supply to LTE Cat-M1 modem in vehicle telematics control unit (TCU). IC Role / Device Role / Timing Role: Enables rapid power cycling via EN pin during cellular network handover to reduce average current draw. Use Value: <1 µA shutdown current extends TCU battery backup life during ignition-off periods exceeding 30 days. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise automotive LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TPS7A0510PDBVR | 1.0 V fixed, 200 mA, 50 µA IQ, no AEC-Q100 qualification | Limited to non-safety-critical infotainment subsystems; lacks thermal shutdown hysteresis | Select only for cost-sensitive non-automotive designs where AEC-Q100 is not mandated. |
| ON Semiconductor NCP114AMX10T2G | 1.0 V fixed, 300 mA, 45 µA IQ, AEC-Q100 Grade 2 (−40 °C to 105 °C) | Lower max operating temperature limits use in engine compartment or radar modules | Acceptable for cabin-mounted modules but unsuitable for under-hood ADAS sensor nodes. |
Compared with TPS7A0510PDBVR and NCP114AMX10T2G, the LDK130PU10R uniquely combines AEC-Q100 Grade 1 qualification, 125 °C operation, and 51 µVRMS noise - making it the sole choice for safety-critical 1.0 V core regulation in radar and camera ECUs.
Availability
LDK130PU10R is available at Aetrix Electronics and suitable for automotive ADAS camera modules, radar signal processors, and infotainment domain controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LDK130PU10R 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
STMicroelectronics is a global semiconductor leader specializing in automotive, industrial, and power management ICs, with broad portfolio coverage from microcontrollers to analog and power devices.
The LDK130 series belongs to ST's automotive-qualified LDO family, designed specifically for low-noise, high-reliability point-of-load regulation in ADAS, body electronics, and infotainment systems.
FAQ
What is the minimum input voltage required for LDK130PU10R to regulate 1.0 V output at 300 mA?
The dropout voltage is 200 mV typical at 300 mA and 40–125 °C. Therefore, minimum input voltage is 1.0 V + 0.2 V = 1.2 V. At room temperature, dropout may be lower (100 mV at 100 mA), but design margin must account for worst-case thermal and load conditions per datasheet Table 4.
Can LDK130PU10R operate with a 0.47 µF output capacitor?
No. The datasheet specifies minimum 1 µF ceramic output capacitance for stability across all operating conditions. Using 0.47 µF violates the stability region shown in Figure 24 and risks oscillation, especially under load transients common in camera sensor power rails.
Is the BYP/ADJ pin required to be connected for the fixed 1.0 V version?
No. For LDK130PU10R (fixed 1.0 V), the BYP/ADJ pin is optional: a 10 nF ceramic capacitor may be added to reduce noise, but if omitted, the pin must remain unconnected and un-routed - not tied to GND or any other net.
Does LDK130PU10R support reverse polarity protection on the IN pin?
No. The device has no internal reverse-voltage protection. Absolute maximum rating for VIN is −0.3 V; applying reverse polarity will damage the IC. External protection (e.g., series Schottky diode or ideal diode controller) is required in systems prone to battery misconnection.
LDK130PU10R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 6-XFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.4V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- 120 µA
- PSRR:
- 55dB (120Hz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (1.2x1.3)
LDK130PU10R FAQ
1.How can I place an order for LDK130PU10R through Aetrix?
Please submit a Request for Quotation (RFQ) for LDK130PU10R 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 LDK130PU10R reliable?
The price and inventory of LDK130PU10R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LDK130PU10R is usually 5 days.
3.What payment methods are accepted for LDK130PU10R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LDK130PU10R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LDK130PU10R?
LDK130PU10R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LDK130PU10R 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 LDK130PU10R?
For technical support, including LDK130PU10R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LDK130PU10R requirements.
6.How does Aetrix verify that LDK130PU10R is sourced from the original manufacturer or authorized distributors?
All LDK130PU10R 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 LDK130PU10R meets industry standards.
7.What is the process for return or replacement of LDK130PU10R?
All LDK130PU10R units undergo pre-shipment inspection (PSI). If there is an issue with LDK130PU10R, 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 LDK130PU10R part is unused and in its original packaging.
Return procedure for LDK130PU10R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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