STMicroelectronics LDK130M15RY

Overview

LDK130M15RY 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 across -40 °C to 125 °C ambient. It powers ADAS domain controllers and automotive point-of-load (P.O.L.) rails where ultra-low noise and shutdown current <1 µA are critical.

For engineers reviewing the LDK130M15RY datasheet, LDK130M15RY pinout, LDK130M15RY application, or LDK130M15RY equivalent, this page delivers verified electrical specs, validated SOT23-5L terminal mapping, automotive-grade thermal performance data, and real-world P.O.L. and ADAS use-case implementation guidance - all grounded in ST's DS9465 Rev 10 production datasheet.

Technical Context

The LDK130M15RY implements a PMOS pass transistor architecture enabling ultra-low dropout and near-zero gate-drive current, supporting stable regulation down to 1.9 V input while maintaining 15 V output capability via external resistor divider in adjustable mode. Its internal bandgap reference and error amplifier deliver tight load/line regulation (0.006 %/mA and 0.05 %/V) over full temperature range.

Logic-controlled enable (EN) pin provides precise active-high activation with 1.2 V min high-threshold and 0.4 V max low-threshold across -40 °C to 125 °C, while integrated thermal shutdown (160 °C trip, 20 °C hysteresis) and short-circuit current limiting (450 mA typ.) ensure robust fault protection in automotive environments.

Key Specifications

Pinout & Package

SOT23-5L package: 5-terminal surface-mount package with 0.95 mm pitch, 2.9 mm × 1.6 mm footprint, and exposed thermal pad (not electrically connected). Designed for high-density automotive PCBs with minimal thermal resistance (R_thJA = 160 °C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with XC6210B152MR-G, LDK130M15RY delivers 2× output current and automotive qualification; versus ADM7172ACPZ-R7, it trades 7 µV_RMS noise reduction for 3× lower quiescent current and integrated enable control - making it optimal for power-constrained, safety-certified automotive P.O.L. nodes.

Availability

LDK130M15RY is available at Aetrix Electronics and suitable for automotive ADAS camera modules, telematics control units, and body control modules requiring stable component supply with full AEC-Q100 traceability and extended temperature support.

Supply support for LDK130M15RY 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 for industrial, automotive, and consumer markets.

The LDK130 series belongs to ST's automotive-qualified LDO portfolio, engineered specifically for demanding point-of-load regulation in ADAS, infotainment, and body electronics - emphasizing low noise, ultra-low IQ, and robust thermal behavior under transient load conditions.

FAQ

What is the maximum allowable input voltage for LDK130M15RY?

The absolute maximum DC input voltage is 7 V, but the recommended operating range is 1.9 V to 5.5 V per the production datasheet. Exceeding 5.5 V risks violating safe operating area limits and may trigger internal overvoltage protection or permanent damage, especially at elevated temperatures.

Can LDK130M15RY be used with a 1 µF ceramic output capacitor?

Yes - ST explicitly specifies 1 µF as the minimum stable ceramic output capacitance for the LDK130M15RY across all output voltages and load conditions. The device's internal compensation is optimized for 1–22 µF X7R/X5R ceramics with ESR ≤1 Ω at 100 kHz, eliminating need for external compensation networks.

Is the BYP/ADJ pin required to be connected on the fixed-output LDK130M15RY?

No - for the fixed-output LDK130M15RY, the BYP/ADJ pin is optional: if a 10 nF bypass capacitor is used, it connects between BYP/ADJ and GND to reduce output noise; if omitted, the pin must be left floating with no PCB routing or stubs to avoid parasitic coupling and instability.

Does LDK130M15RY support reverse polarity protection on the input?

No - the LDK130M15RY lacks integrated reverse-voltage protection. Applying negative voltage to the IN pin beyond -0.3 V (absolute maximum rating) can damage the internal PMOS pass device. External protection, such as a series Schottky diode or dedicated reverse-polarity IC, is required in battery-reversal-prone automotive installations.