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MIC29302AWU-TR

3A adjustable LDO, 1.24-15V output, 450mV dropout, TO-263-5, fast transient response

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Manufacturer Part：

MIC29302AWU-TR

Package：

TO-263-5 (10.67 x 9.17 x 4.6 mm)

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Description

Product Overview

The MIC29302AWU-TR from Microchip Technology is a 3A Fast Response Low-Dropout (LDO) Voltage Regulator in a TO-263-5 surface mount package. It features adjustable output voltage from 1.24V to 15V, 560 mV dropout at full load, and very fast transient response.

Key Specifications

Output Type Adjustable
Output Voltage Range 1.24 V to 15 V
Max Output Current 3 A
Dropout Voltage 450 mV typ @ 3A
Input Voltage Range 3 V to 16 V
Accuracy ±2%
Ground Current Low (typical)
Enable Pin Yes (TTL/CMOS)
Error Flag Yes
Operating Temperature -40°C to +125°C
Package TO-263-5 (D2PAK)

Features

  • High current capability: 3A over full temperature range
  • Low dropout voltage of 450 mV at full load
  • Very fast transient response
  • Accurate 1% guaranteed output tolerance
  • Adjustable output from 1.24V to 15V via external resistors
  • Zero-current shutdown mode via EN pin
  • Error flag signals output out-of-regulation
  • Full protection: overcurrent, reversed input, overtemperature

Applications

  • Processor peripheral and I/O supplies
  • High-efficiency green computer systems
  • Automotive electronics
  • Battery-powered equipment
  • Post-regulator for switching supplies

The MIC29302AWU-TR is a high-current, low-dropout voltage regulator from Microchip Technology using the proprietary Super Beta PNP process with a PNP pass element. The 3A LDO features 450 mV dropout voltage at full load and very low ground current. Designed for high-current loads, it also excels in lower current, low-dropout critical systems. The adjustable output can be set from 1.24V to 15V using two external resistors. The device includes comprehensive protection against overcurrent, reversed input, and overtemperature conditions.

The MIC29302AWU-TR uses a PNP pass transistor in a common-emitter configuration to achieve low dropout voltage. An error amplifier compares a fraction of the output voltage (set by external feedback resistors) with an internal 1.24V bandgap reference, and drives the PNP pass element to maintain regulation. The EN pin enables TTL/CMOS-controlled shutdown, reducing supply current to near zero. The error flag output becomes active when the output drops out of regulation. Current limiting and thermal shutdown provide fault protection. The Super Beta PNP process minimizes base current, resulting in very low ground current.

Pin Name Type Function
1 EN Input Enable input (active high, TTL/CMOS compatible)
2 IN Power Unregulated input voltage (3-16V)
3 GND Ground Ground / Tab
4 OUT Output Regulated output voltage
5 ADJ Input Feedback adjustment pin for output voltage set
  • Processor and FPGA I/O power supplies
  • High-efficiency green computer systems
  • Automotive ECU power regulation
  • Post-regulation after switching converters
  • Battery-powered portable equipment
Manufacturer Part Number Package Notes
Microchip MIC29302AWD-TR TO-252-5 Smaller DPAK package
Microchip MIC29150-3.3WT TO-263-3 Fixed 3.3V, 1.5A version
Texas Instruments LM1085IT-ADJ TO-263-3 3A adjustable LDO alternative
Infineon TLE4274 TO-263-5 Automotive 200mA LDO
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Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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