MIC5319-2.8YD5 View Datasheet(PDF) - Micrel

Part Name

Description

Manufacturer

MIC5319-2.8YD5

500mA µCap Ultra-Low Dropout High PSRR LDO Regulator

Micrel 

MIC5319

500mA µCap Ultra-Low Dropout

High PSRR LDO Regulator

General Description

The MIC5319 is a high-performance, 500mA LDO

regulator, offering extremely high PSRR and very-low

noise while consuming low ground current.

Ideal for battery-operated applications, the MIC5319

features 1% accuracy, extremely low-dropout voltage

(200mV @ 500mA), and low ground current at light load

(typically 90µA). Equipped with a logic-compatible enable

pin, the MIC5319 can be put into a zero-off-mode current

state, drawing no current when disabled.

The MIC5319 is a µCap design operating with very-small

ceramic output capacitors for stability, thereby reducing

required board space and component cost.

The MIC5319 is available in fixed-output voltages and

adjustable output voltages in the super-compact 2mm x

2mm MLF® leadless package and thin SOT-23-5 package.

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

Features

• Ultra-low dropout voltage 200mV @ 500mA

• Input voltage range: 2.5 to 5.5V

• Stable with ceramic output capacitor

• Low output noise: 40µVrms

• Low quiescent current of 90µA total

• High PSRR, up to 70dB @1kHz

• Fast turn-on-time: 40µs typical

• High-output accuracy:

− ±1.0% initial accuracy

− ±2.0% over temperature

• Thermal-shutdown protection

• Current-limit protection

• Logic-controlled Enable

• Tiny 2mm x 2mm MLF® package, 500mA continuous

• Thin SOT-23-5 package, 500mA peak

Typical Application

Applications

• Cellular phones

• PDAs

• Fiber optic modules

• Portable electronics

• Notebook PCs

• Audio Codec power supplies

MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

May 2010

M9999-052510

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