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STMicroelectronics LDK130PU30R
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- Part No.:
- LDK130PU30R
- Manufacturer:
- STMicroelectronics
- Package:
- 6-XFDFN
- Datasheet:
-
LDK130PU30R.pdf
- Description:
- IC REG LINEAR 3V 300MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,202
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Product details
Overview
LDK130PU30R from STMicroelectronics is an AEC-Q100 Grade 1 automotive-qualified low-dropout linear regulator in SOT23-5L package, delivering 300 mA output current with 100 mV typical dropout at 100 mA, 30 µA typical quiescent current, ±2.0% output voltage accuracy at 25 °C, and operation from 1.9 V to 5.5 V input. It powers safety-critical ADAS domain controllers requiring ultra-low noise and stable voltage under battery-voltage transients.
For engineers reviewing the LDK130PU30R datasheet, LDK130PU30R pinout, LDK130PU30R application, or LDK130PU30R equivalent, this page delivers verified electrical characteristics, validated SOT23-5L terminal mapping, confirmed automotive-grade thermal performance (−40 °C to 125 °C), and real-world load/line transient behavior per DS9465 Rev 10.
Technical Context
The LDK130PU30R implements a PMOS pass transistor architecture enabling ultra-low dropout and near-zero gate-drive current dependency on load. Its internal bandgap reference and error amplifier are trimmed for ±2.0% initial accuracy and −3.0% to +3.0% variation across −40 °C to 125 °C.
It integrates logic-controlled enable (EN) with guaranteed 0.4 V max logic-low threshold and 1.2 V min logic-high threshold, plus thermal shutdown at 160 °C with 20 °C hysteresis and constant-current short-circuit protection limiting output to 450 mA. Noise suppression uses internal bypass path and supports external 10 nF capacitor on BYP/ADJ pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 300 mA guaranteed - sufficient to power dual-core microcontrollers or image sensor interfaces without derating at 125 °C junction. |
| Dropout Voltage | 100 mV typ. at 100 mA - enables regulation from 2.6 V input to 2.5 V rail when battery drops to 2.7 V nominal. |
| Quiescent Current | 30 µA typ. (active), <1 µA (shutdown) - extends battery life in always-on ADAS modules during vehicle sleep mode. |
| Output Noise | 51 µVRMS (10 Hz–100 kHz) - meets stringent analog front-end requirements for radar signal conditioning ICs. |
| Supply Rejection | 55 dB (120 Hz–10 kHz) - suppresses ripple from switching DC-DC converters feeding adjacent domains. |
| Operating Temp | −40 °C to +125 °C - qualified for engine bay and front bumper-mounted ADAS ECU placement. |
| Input Voltage | 1.9 V to 5.5 V - compatible with Li-ion, LiFePO₄, and 5 V buck-regulated supplies in automotive subsystems. |
Pinout & Package
SOT23-5L package: 2.9 mm × 1.6 mm × 1.1 mm body, 0.95 mm pitch, exposed thermal pad (pin 5 N/C connected to GND), RoHS-compliant ECOPACK2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Main input supply connection | Accepts 1.9–5.5 V; requires local 1 µF ceramic decoupling within 3 mm of pin to ensure stability. |
| 2 (GND) | Analog/digital ground reference | Must be tied directly to low-impedance PCB ground plane; shared with thermal pad for optimal thermal dissipation. |
| 3 (EN) | Active-high enable control | Pull high ≥1.2 V to activate; pull ≤0.4 V to enter sub-1 µA shutdown - used for MCU-controlled power sequencing. |
| 4 (BYP/ADJ) | Noise reduction or output voltage setting | Fixed version: connect 10 nF bypass cap to GND for 51 µVRMS noise; adjustable version: set VOUT via R1/R2 divider. |
| 5 (OUT) | Regulated output voltage source | Delivers up to 300 mA; requires 1 µF ceramic output capacitor with ESR <1 Ω for phase margin >45°. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use at −40 °C to +125 °C ambient, including HTOL, TC, and ESD testing per stress test plan. |
| Ceramic capacitor compatibility | Stable with 1 µF X5R/X7R output cap - eliminates need for costly tantalum or polymer capacitors in space-constrained modules. |
| Logic-controlled shutdown | EN pin draws <100 nA; enables deep-sleep current budgeting below 5 µA system-wide in parked vehicle state. |
| Internal protection | Thermal shutdown (160 °C) + hysteresis (20 °C) + constant-current short-circuit limit (450 mA) - prevents latch-up during fault conditions. |
| Low-noise architecture | 51 µVRMS noise with 10 nF BYP cap - avoids post-regulation filtering for precision ADC references in camera ISPs. |
Applications
| ADAS Camera Power Supply | Radar Signal Chain Biasing |
|---|---|
|
Use Scenario: Powers 3.3 V image signal processor and CIS sensor in forward-facing monocular camera module. IC Role / Device Role / Timing Role: Primary LDO for analog and digital rails; provides clean bias under cold-crank (4.2 V → 2.8 V) and load-dump (16 V transient) conditions. Use Value: 100 mV dropout ensures uninterrupted operation down to 3.4 V input; 51 µVRMS noise prevents fixed-pattern noise in raw image data. |
Use Scenario: Supplies 1.8 V and 2.5 V rails to RF transceiver and high-speed ADC in 77 GHz radar SoC. IC Role / Device Role / Timing Role: Low-noise post-regulator after buck converter; rejects switching noise from 2 MHz DC-DC stage. Use Value: 55 dB SVR at 10 kHz suppresses fundamental and harmonic ripple; ±2.0% accuracy maintains ADC full-scale linearity. |
| Automotive Infotainment Core Logic | Body Control Module Microcontroller |
|
Use Scenario: Delivers 1.2 V core voltage to quad-core ARM Cortex-A53 application processor in head unit. IC Role / Device Role / Timing Role: Secondary LDO for SoC core rail; sequenced via EN pin after main 5 V rail stabilization. Use Value: 30 µA quiescent current minimizes standby drain; thermal shutdown prevents damage during prolonged high-CPU-load operation. |
Use Scenario: Provides 3.3 V I/O and 5.0 V CAN transceiver supply in door module with LIN interface. IC Role / Device Role / Timing Role: Dual-rail LDO (fixed 3.3 V + adjustable 5.0 V via external resistors); enables single-BOM flexibility. Use Value: Adjustable version supports 0.8–3.5 V outputs; 300 mA rating handles peak CAN bus dominant-phase current surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B302MR-G | 300 mA, 25 µA IQ, SOT23-5, but only rated to 85 °C ambient and not AEC-Q100 qualified. | Limited to cabin interior modules; unsuitable for engine-compartment or ADAS front-bumper placement. | Select only for non-automotive industrial portable devices where temperature range and qualification are not required. |
| ON Semiconductor NCP114AMX300TBG | 300 mA, 45 µA IQ, SOT23-5, AEC-Q100 Grade 2 (−40 °C to 105 °C), 150 mV dropout at 100 mA. | Lower thermal grade and higher dropout reduce usable input voltage margin in cold-crank scenarios. | Choose when cost sensitivity outweighs need for Grade 1 qualification and lowest possible dropout. |
Compared with XC6210B302MR-G and NCP114AMX300TBG, the LDK130PU30R uniquely combines AEC-Q100 Grade 1, 100 mV dropout, and 51 µVRMS noise - making it the only option qualified for front-radar and surround-view camera power domains.
Availability
LDK130PU30R is available at Aetrix Electronics and suitable for automotive ADAS systems, infotainment head units, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LDK130PU30R 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 headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and automotive-grade analog products.
The LDK130 series belongs to ST's automotive-optimized LDO portfolio, engineered specifically for power integrity in ADAS, infotainment, and chassis control systems where low noise, high PSRR, and AEC-Q100 reliability are mandatory.
FAQ
What is the maximum allowable input voltage for LDK130PU30R?
The absolute maximum DC input voltage is 7 V, but the recommended operating range is 1.9 V to 5.5 V per DS9465 Rev 10. Exceeding 5.5 V risks violating safe operating area limits even briefly during load dump transients unless clamped externally.
Can LDK130PU30R operate with a 1 µF ceramic output capacitor only?
Yes - the device is explicitly characterized and stabilized with 1 µF X5R/X7R ceramic capacitors (ESR <1 Ω). No additional ESR network or tantalum capacitor is required, simplifying layout and reducing bill-of-materials cost.
Is the BYP/ADJ pin required to be connected in fixed-output configuration?
No - for fixed-output versions like LDK130PU30R (3.0 V), the BYP/ADJ pin is optional: a 10 nF capacitor to GND reduces output noise to 51 µVRMS, but leaving it floating is electrically valid and maintains full specification compliance.
Does LDK130PU30R support reverse polarity protection?
No - the device lacks integrated reverse-voltage protection. If reverse battery connection is possible in the target system, an external Schottky diode or ideal diode controller must be added in series with the IN pin to prevent damage.
LDK130PU30R 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):
- 3V
- 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)
LDK130PU30R FAQ
1.How can I place an order for LDK130PU30R through Aetrix?
Please submit a Request for Quotation (RFQ) for LDK130PU30R 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 LDK130PU30R reliable?
The price and inventory of LDK130PU30R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LDK130PU30R is usually 5 days.
3.What payment methods are accepted for LDK130PU30R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LDK130PU30R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LDK130PU30R?
LDK130PU30R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LDK130PU30R 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 LDK130PU30R?
For technical support, including LDK130PU30R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LDK130PU30R requirements.
6.How does Aetrix verify that LDK130PU30R is sourced from the original manufacturer or authorized distributors?
All LDK130PU30R 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 LDK130PU30R meets industry standards.
7.What is the process for return or replacement of LDK130PU30R?
All LDK130PU30R units undergo pre-shipment inspection (PSI). If there is an issue with LDK130PU30R, 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 LDK130PU30R part is unused and in its original packaging.
Return procedure for LDK130PU30R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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