MIC44F19YMLTR Micrel Semiconductor, MIC44F19YMLTR Datasheet

MIC44F19YMLTR

Manufacturer Part Number

MIC44F19YMLTR

Description

Manufacturer

Micrel Semiconductor

Datasheet

1.MIC44F19YMLTR.pdf (11 pages)

Specifications of MIC44F19YMLTR

Date_code

05+

Packing_info

22D-08L

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General Description

The MIC5319 is a high-performance, 500mA LDO regula-

tor, 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 adjust-

able output voltages in the super-compact 2mm x 2mm MLF

leadless package and thin SOT-23-5 package.

Additional voltage options are available. Contact Micrel

marketing.

All support documentation can be found on Micrel’s web site

at www.micrel.com.

Typical Application

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

March 2008

1µF

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

VIN

MIC5319

GND

VOUT

BYP

0.1µF

2.2µF

2.8V@500mA

OUT

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:

• Thermal shutdown protection

• Current-limit protection

• Logic-controlled Enable

• Tiny 2mm x 2mm MLF

• Thin SOT-23-5 package, 500mA peak

Applications

• Cellular phones

• PDAs

• Fiber optic modules

• Portable electronics

• Notebook PCs

• Audio Codec power supplies

• ±1.0% initial accuracy

• ±2.0% over temperature

500mA µCap Ultra-Low Dropout

High PSRR LDO Regulator

100

200

180

160

140

120

100

(Bypass Pin Cap = 0.1µF)

MIC5319

100

OUTPUT CURRENT (mA)

100

vs. Output Current

500mA

FREQUENCY (Hz)

Dropout Voltage

50mA

package, 500mA continuous

200

PSRR

Vout = 2.8V

Vin = Vout + 1V

Cout = 2.2µF

300

Vout = 2.8V

Cout = 2.2 µ F

10k

100µA

400

100k

500

M9999-032808

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