Datasheet > MIC2219-3.3BML

MIC2219-3.3BML

更新时间： 2024-02-05 03:09:02

品牌	Logo	应用领域
麦瑞 - MICREL		/
页数	文件大小	规格书
10页	219K
描述
Dynamically Adjustable Dual uCap LDO

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MIC2219-3.3BML 数据手册

MIC2219

Micrel, Inc.

MIC2219

Dynamically Adjustable Dual µCap LDO

General Description

Features

The MIC2219 is a dual µCap low dropout regulator. The first

regulator is capable of sourcing 150mA, while the second

regulator can source up to 300mA.

• Input voltage range: 2.25V to 5.5V

• Stable with ceramic output capacitor

• 2 LDO outputs

Output 1 - 150mA output current

Output 2 - 300mA output current

• Feedback pins externally accessible

• Low dropout voltage of 80mV @ 100mA

• Ultra-low quiescent current of 48µA total (24µA/LDO)

• High output accuracy:

Ideal for battery operated applications, the MIC2219 offers

1% accuracy, extremely low dropout voltage (80mV @

100mA), and extremely low ground current, only 48µA total.

EquippedwithTTLlogiccompatibleenablepins,theMIC2219

can be put into a zero-off-mode current state, drawing no

current when disabled. Separate enable pins allow individual

control of each output voltage.

The additional feature incorporated in the MIC2219 is bring-

ing out the feedback nodes to two external pins, allowing for

dynamic adjustment of the LDO output voltages.

+1.0% initial accuracy

+2.0% over temperature

• Thermal shutdown protection

• Current limit protection

• Tiny 10-pin 3mm × 3mm MLF™ package

The MIC2219 is a µCap design, operating with very small

ceramic output capacitors for stability, reducing required

board space and component cost.

Applications

• Cellular phones

• Wireless modems

• PDAs

The MIC2219 is available in fixed output voltages in the

10-pin 3mm × 3mm MLF™ leadless package.

• LEDs

Typical Application

MIC2219-xxBML

VIN

VOUT1

VOUT2

FB1

OFF ON

LEDs ×10

EN1

EN2

CBYP

1µF

Ceramic

Vibrator

Motor

FB2

0.01µF

GND

MIC2219 Typical Cell Phone Application

MicroLeadFrame and MLF are 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

April 2005

M9999-042105

12 3 4 5 6 7...10

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