MIC2204

Micrel

M0214-012904

2

January 2004

Ordering Information

Part Number

Voltage

Junction Temp. Range

Package

Lead Finish

MIC2204BMM

Adjustable

–40

°C to +125°C

10-pin MSOP

Standard

MIC2204YMM

Adjustable

–40

°C to +125°C

10-pin MSOP

Lead-Free

MIC2204BML

Adjustable

–40

°C to +125°C

10-pin MLF™

Standard

EN

FB

6

5

1

SW

VIN

SYNC_IN

SYNC_OUT

10 GND

GND

GND

BIAS

9

8

7

2

3

4

MSOP-10 (MM)

Pin Configuration

Pin Description

Pin Number

Pin Name

Pin Function

1

SW

Switch (Output): Internal power MOSFET output switches.

2

VIN

Supply Voltage (Input): Requires bypass capacitor to GND.

3

SYNC_IN

SYNC_IN for the MIC2204: Sync the main switching frequency to an

external clock. Tie pin to ground if not using this function. Tying SYNC_IN

high reduces the switching frequency to 1.6MHz (See “Applications Informa-

tion” section).

4

SYNC_OUT

SYNC_OUT an open collector output to feed into SYNC_IN. Float or ground

the SYNC_OUT pin if not using sync out function.

5

EN

A low level EN will power down the device, reducing the quiescent current to

under 15

µA (typ. 6.5µA).

6

FB

Input to the error amplifier, connect to the external resistor divider network to

set the output voltage.

7

BIAS

Internal circuit bias supply, nominally 2.3V. Must be de-coupled to signal

ground with a 0.01

µF capacitor.

8, 9, 10

GND

Ground.

SW

VIN

SYNC_IN

SYNC_OUT

GND

GND

GND

BIAS

1

2

3

4

10

9

8

7

56

EN

FB

MLF-10 (ML)