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MIC5283-5.0YME

120V input 150mA LDO, 5.0V fixed, 8µA Iq, 75dB PSRR, ePad SOIC-8

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Manufacturer Part：

MIC5283-5.0YME

Package：

8-Lead ePad SOIC (4.9 x 3.9mm)

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Description

Product Overview

The MIC5283-5.0YME is a 120V input, 150mA ultra-low Iq linear regulator from Microchip Technology with fixed 5.0V output, 8µA quiescent current, and 75dB PSRR in an 8-pin ePad SOIC package.

Key Specifications

Input Voltage Range 6V to 120V DC
Output Voltage 5.0V fixed
Output Current 150mA guaranteed
Quiescent Current 8µA typical, 14µA max
Dropout Voltage 1.8V typical, 2.8V max at 150mA
Output Accuracy ±3% initial, ±5% over temperature
PSRR 75dB at 1-30kHz, 70dB at 100Hz-1kHz
Line Regulation 0.04%/V typical
Current Limit 300mA typical
Thermal Shutdown 155°C typical
Operating Temperature -40°C to +125°C
Package 8-Lead ePad SOIC

Features

  • Ultra-wide 6V to 120V input voltage range
  • Ultra-low 8µA quiescent current
  • Ultra-high 75dB PSRR at 10kHz
  • Stable with ceramic output capacitors
  • Thermal shutdown and current limit protection
  • Thermally efficient ePad SOIC package
  • Optimized for high-voltage line transients
  • Bypass pin for output noise reduction

Applications

  • Industrial and telecom power supplies
  • Remote keyless entry receivers
  • Off-line power supplies
  • High-voltage LDO replacement
  • Automotive and harsh environment systems

The MIC5283-5.0YME is a high-voltage linear regulator from Microchip Technology featuring an ultra-wide 6V to 120V DC input range and a fixed 5.0V output at up to 150mA. The device achieves an ultra-low 8µA quiescent current, making it ideal for always-on battery-powered applications. The 75dB PSRR at 10kHz rejects switching noise from upstream converters. The device is stable with ceramic output capacitors and includes a bypass pin for additional noise filtering. Thermal shutdown at 155°C and current limiting at 300mA typical provide robust fault protection. The ePad SOIC package ensures efficient thermal dissipation.

The MIC5283-5.0YME uses a high-voltage P-channel MOSFET pass element to regulate the output voltage across the wide 6V-120V input range. The high-voltage process allows the pass transistor to withstand large drain-to-source voltages without breakdown. The internal voltage reference and error amplifier compare a fraction of the output with the reference (via an internal resistor divider for the fixed 5.0V version), adjusting the PMOS gate drive to maintain regulation. The ultra-low 8µA quiescent current is achieved by minimizing bias current in the error amplifier and reference while maintaining loop stability. The high PSRR results from the high gain error amplifier and low output impedance of the pass element at audio frequencies. The 1.8V typical dropout at 150mA is determined by the RDS(ON) of the PMOS pass element. The bypass (BYP) pin allows an external capacitor to filter the reference noise for ultra-low output noise. Current limiting at 300mA typical and thermal shutdown at 155°C protect against overload and overheating conditions.

Pin Name Type Description
1 VIN Power Input supply (6V-120V)
2 VIN Power Input supply (6V-120V)
3 GND Power Ground
4 EN/NC Input Enable or no connect (version dependent)
5 BYP Analog Bypass capacitor for noise reduction
6 VOUT Power Regulated 5.0V output
7 VOUT Power Regulated 5.0V output
8 GND/EP Power Ground and exposed thermal pad
  • Industrial Power: 120V input capability directly regulates from 48V telecom or 24V industrial bus without pre-regulation
  • Telecom Systems: 75dB PSRR rejects switching noise from upstream DC-DC converters in communication equipment
  • Remote Keyless Entry: 8µA quiescent current minimizes battery drain in always-on automotive receiver circuits
  • Off-Line Supplies: High-voltage tolerance handles rectified AC line voltages with minimal external components
  • Harsh Environments: Optimized for high-voltage line transients and load dump conditions in automotive settings
Model Manufacturer Key Difference Package Specs
MIC5283-3.3YME Microchip 3.3V fixed output version – –
MIC5283YME Microchip Adjustable output (1.22V-5.5V) – –
MIC5283-5.0YML Microchip 5.0V in 3x3mm VDFN package – –
LR8N8-G Microchip 440V input, 20mA, TO-252 – –
TLV3001 TI 100V input, 50mA LDO – –
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