3/24

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

Pin

Name

Description

Remark

QFN20L4 TSSOP16

1

2

VIN

HV S

High-Voltage Supply input

bypass to GND

with a low ESR ca-

pacitance >20µF

2

1

NC

-

Not connected

Open or GND

3

4

ON

HV AI

High-Voltage input to enable converter

4

3

NC

-

Not connected

Open or GND

5

6

PGOOD

HV AO

High-Voltage capable low-side open-drain

output for

power good flag

6

8

AGND

S

Signal ground connection

7

5

NC

-

Not connected

Open or GND

8

7

NC

-

Not connected

Open or GND

9

10

NC

-

Not connected

Open or GND

10

9

OCP

AI

Over-current protection resistor input, con-

nect to ground via resistor

11

-

SENSE

AI

Feedback input for converter regulation,

connect to output voltage

Redundant, con-

nect both SENSE

pins

12

12

SENSE

AI

Feedback input for converter regulation,

connect to output voltage

Redundant, con-

nect both SENSE

pins

13

11

NC

-

Not connected

Open or GND

14

13

PGND

S

Power ground connection

15

15

LXT

HV AO

Integrated high-side switch output, con-

nect freewheeling diode and inductor to

this pin

16

14

NC

-

Not connected

Open or GND

17

16

NC

-

Not connected

Open or GND

18

-

NC

-

Not connected

Open or GND

19

-

NC

-

Not connected

Open or GND

20

-

NC

-

Not connected

Open or GND

21

-

EP

-

Exposed die pad

Connect to GND

1) D = Digital, A = Analog, S = Supply, HV = High voltage (see max. ratings), I = Input, O = Output

Note: Pins with identical names have to be connected.

2.2 Pin Description

Table 1: Pin Description