Texas Instruments LP591230MDRVREP

Overview

LP591230MDRVREP from Texas Instruments is an enhanced-product-grade, 500-mA low-dropout regulator (LDO) with 12 μVRMS output noise, 75 dB PSRR at 1 kHz, and 30 μA quiescent current. It operates from 1.6 V to 6.5 V input and delivers a fixed 3.0 V output with ±2% tolerance across –55°C to +125°C junction temperature, supporting RF power rails in defense-grade inertial navigation systems.

For engineers reviewing the LP591230MDRVREP datasheet, LP591230MDRVREP pinout, LP591230MDRVREP application, or LP591230MDRVREP equivalent, key selection criteria include its 95 mV dropout at 500 mA, 1-μF ceramic capacitor stability, integrated power-good output with 140-μs delay, and reverse-current protection - all validated for extended-life aerospace and medical deployments.

Technical Context

The LP591230MDRVREP implements a precision bandgap reference and error amplifier-based regulation loop with internal feedback divider set for 3.0 V output. Its architecture integrates thermal shutdown (160°C), short-circuit current limiting (700–1100 mA), and a dedicated 140-μs-delayed power-good (PG) comparator referenced to 86–93% of nominal VOUT.

It features active reverse-current protection (IRO ≤ 150 μA when VIN < VOUT), EN pin with 1.35 V turn-on threshold and 3-MΩ internal pulldown, and output auto-discharge via 100 Ω pulldown resistance when disabled - enabling fast, controlled turnoff without external circuitry.

Key Specifications

Pinout & Package

LP591230MDRVREP is housed in a thermally enhanced 6-pin WSON package (DRV) measuring 2.00 mm × 2.00 mm with exposed thermal pad. The pad must be connected to PCB ground plane via thermal vias for optimal junction-to-board thermal resistance (R_θJB = 40.0°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPL7407LADGQR and TPS7A2030PDBVR, LP591230MDRVREP uniquely combines 500-mA capability, 12 μVRMS noise, 95 mV dropout, and EP qualification - making it the sole option for high-reliability, single-rail RF/analog power delivery in defense and aerospace platforms.

Availability

LP591230MDRVREP is available at Aetrix Electronics and suitable for surveillance systems, inertial navigation units, land mobile radios, and GPS receivers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LP591230MDRVREP 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

Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions for industrial, automotive, and aerospace markets.

The LP5912-EP product line delivers radiation-tolerant, extended-lifecycle LDOs engineered specifically for defense, aerospace, and medical applications demanding controlled baselines, full traceability, and guaranteed long-term availability.

FAQ

What is the maximum input voltage rating for LP591230MDRVREP?

The absolute maximum input voltage for LP591230MDRVREP is 7 V on the IN pin. However, the recommended operating range is 1.6 V to 6.5 V. Exceeding 7 V risks permanent damage per the Absolute Maximum Ratings table in the SNVSC57 datasheet. Operation above 6.5 V is not characterized and may compromise regulation accuracy or thermal performance.

Does LP591230MDRVREP require an external noise-bypass capacitor?

No, LP591230MDRVREP does not require an external noise-bypass capacitor. Its 12 μVRMS output noise is achieved through internal design optimization, validated across 10 Hz to 100 kHz bandwidth with 1-μF ceramic output capacitance. Adding a bypass capacitor provides no measurable noise reduction and unnecessarily increases BOM cost and footprint.

How is the power-good (PG) output of LP591230MDRVREP configured?

The PG pin of LP591230MDRVREP is an open-drain output that asserts high when VOUT reaches 86–93% of its nominal 3.0 V value, with a typical delay of 140 μs after enable. An external pullup resistor (typically 10–100 kΩ to 3.0 V or higher rail) is mandatory. PG remains low during startup, dropout, or thermal shutdown - providing reliable system sequencing feedback.

What thermal management is required for LP591230MDRVREP at full 500-mA load?

At 500 mA and worst-case 6.5 V input, LP591230MDRVREP dissipates up to 1.75 W. To maintain TJ ≤ 125°C, the PCB must provide ≤40°C/W junction-to-board thermal resistance via the exposed thermal pad - achieved using ≥4 thermal vias (0.3 mm diameter) connecting the pad to inner ground planes. Ambient derating is required above 85°C ambient.

Is LP591230MDRVREP pin-compatible with other LP5912-EP variants?

Yes, all LP5912-EP variants - including LP591230MDRVREP - share identical 6-pin WSON (DRV) packaging, pinout, and footprint. Output voltage is set internally; no external resistors are used. This allows direct substitution between fixed-output versions (e.g., 1.8 V, 2.5 V, 3.0 V, 3.3 V) without PCB changes, provided input/output capacitor values meet stability requirements for each VOUT.