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ELMOS Semiconductor AG

Data Sheet

QM-No.: 25DS0064E.01

PRELIMINARY INFORMATION - MAY 29, 2012

This document contains information on a pre-production product. ELMOS Semiconductor AG reserves the right to change specifications and information herein without notice.

LOW QUIESCENT CURRENT STEP DOWN CONVERTER FAMILY

1 Functional Diagram

Figure 1: Block diagram

2 Pinout

Figure 2: Package pinout, transparent top view, not to scale.

2.1 Pin Configuration QFN20L4 / TSSOP16

QFN20L4

LXT

PGND

NC

SENSE

SENSE

VIN

NC

ON

NC

PGOOD

1

2

3

4

5

15

14

13

12

11

6

7

8

9

10

20 19 18 17 16

21

E522.0x

TSSOP16

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

NC

VIN

NC

ON

NC

PGOOD

NC

AGND

NC

LXT

NC

PGND

SENSE

NC

NC

OCP

OCP

Resistor

Driver

Internal

Driver

Transistor

E522.0X

LXT

VIN

DRIVER

ACTIVE

SENSE

OC OFF

IDLE

PFM

Controller

AGND

OCP

IDLE

Detector

IDLE

Power Good

Comparator

VOUT

Comparator

PGND

SENSE

Internal

Supply

VIN

ON

PGOOD

OVT

ENABLE