Micrel, Inc.

MIC5164

June 2010

2

M9999-061510

Ordering Information

Part Number

Temperature Range

Package

Lead Finish

MIC5164YMM

–40° to +125°C

10-Pin MSOP

Pb-Free

Note

: MSOP is a Green RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.

Pin Configuration

10-Pin MSOP (MM)

Pin Description

Pin Number

Pin Name

Pin Function

1

VCC

Bias Supply (Input): Apply 3V-6V to this input for internal bias to the controller.

2

EN

Enable (Input): CMOS compatible input. Logic high = enable, logic low = shutdown. The EN pin can

be tied directly to VDDQ or VCC for functionality. Do not float the EN pin. Floating this pin causes the

enable to be in an undetermined state.

3

VDDQ

Input Supply Voltage.

4

VREF

Reference voltage equal to half of VDDQ. For internal use only.

5

GND

Ground.

6

FB

Feedback (Input): Input to the internal error amplifier.

7

COMP

Compensation (Output):

Connect a capacitor and resistor from COMP pin to FB pin for

compensation of the internal control loop.

8

LD

Low-side drive (Output): Connects to the Gate of the external low-side MOSFET.

9

HD

High-side drive (Output): Connects to the Gate of the external high-side MOSFET.

10

PG

Power Good (Output): Open drain output.