MIC5305-1.8BML View Datasheet(PDF) - Micrel

Part Name

Description

Manufacturer

MIC5305-1.8BML

150mA µCap Ultra-Low Dropout LDO Regulator

Micrel 

MIC5305

150mA µCap Ultra-Low Dropout

LDO Regulator

General Description

The MIC5305 is a high-performance, 150mA LDO regula-

tor, offering extremely high PSRR and very low noise while

consuming low ground current.

Ideal for battery-operated applications, the MIC5305

features 1% accuracy, extremely low-dropout voltage

(60mV @ 150mA), and low ground current at light load

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

pin, the MIC5305 can be put into a zero-off-mode current

state, drawing no current when disabled.

The MIC5305 is a µCap design operating with very small

ceramic output capacitors for stability, thereby reducing

required board space and component cost.

The MIC5305 is available in fixed output voltages and

adjustable output voltages in the super-compact 6-pin

2mm × 2mm MLF® leadless package, our new ultra-thin

6-pin 2mm × 2mm Thin MLF® and thin SOT-23-5 package.

Additional voltage options are available. Contact Micrel

marketing.

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

Features

• Ultra-low dropout voltage of 60mV @ 150mA

• Input voltage range: 2.25 to 5.5V

• Stable with ceramic output capacitor

• 150mA guaranteed output current

• Low output noise — 20µVrms

• Low quiescent current of 90µA total

• High PSRR, up to 85dB @1kHz

• Less than 30µs turn-on time w/CBYP = 0.01µF

• High output accuracy:

– ±1.0% initial accuracy

– ±2.0% over temperature

• Thermal shutdown protection

• Current limit protection

• Tiny 6-pin 2mm × 2mm MLF® package

• Ultra-Thin 6-pin 2mm × 2mm Thin MLF® package

• Thin SOT-23-5 package

Applications

• Cellular phones

• PDAs

• Fiber optic modules

• Portable electronics

• Notebook PCs

• Audio Codec power supplies

Typical Application

3.0V

VIN

1µF

MIC5305

VIN VOUT

EN BYP

GND

0.1µF

2.85V@150mA

VOUT

1µF

Dropout Voltage

70

60

50

40

30

20

10

0

0 20 40 60 80 100 120 140

OUTPUT CURRENT (mA)

PSRR

(Bypass Pin Cap = 0.1µF)

100

90

150mA

80

70

60

50mA

50

40

100µA

30

20

10

0

0.1

1

10 100 1k

FREQUENCY (kHz)

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

June 2007

1

M9999-062507

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