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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

9.2.10 Misc Application Remarks

Optional, regarding VIN voltage supervision, the accurate threshold at pin ON can be used to implement under-

voltage lock-out for the converter, automatically switching to sleep mode if necessary. In such cases a resistive di-

vider between VIN and GND, connected to ON can be used. The threshold is defined by

Choose the divider impedance significantly lower than the typical input impedance of 7MΩ at pin ON to avoid in-

accuracy. Note, that the divider current directly contributes to the application current consumption.

For reverse polarity protection a diode (or comparable reverse voltage protection measure) for VIN is recommend-

ed. In EMC sensitive environments additional decoupling measures at VIN are recommended.

R1

Product ID

V

OUT

I

OUT

Ambient Temp. Range

Package

E522.01_QFN20L4

5V

500mA

-40°C to +125°C

QFN20L4

E522.02_QFN20L4

3.3V

500mA

-40°C to +125°C

QFN20L4

E522.03_QFN20L4

5V

350mA

-40°C to +125°C

QFN20L4

E522.04_QFN20L4

3.3V

350mA

-40°C to +125°C

QFN20L4

E522.05_QFN20L4

1.5V to 40V

500mA

-40°C to +125°C

QFN20L4

E522.06_QFN20L4

1.5V to 40V

350mA

-40°C to +125°C

QFN20L4

E522.07_QFN20L4

5V

1A

-40°C to +125°C

QFN20L4

E522.08_QFN20L4

3.3V

1A

-40°C to +125°C

QFN20L4

E522.09_QFN20L4

1.5V to 40V

1A

-40°C to +125°C

QFN20L4

E522.01_TSSOP16

5V

500mA

-40°C to +125°C

TSSOP16

E522.02_TSSOP16

3.3V

500mA

-40°C to +125°C

TSSOP16

E522.03_TSSOP16

5V

350mA

-40°C to +125°C

TSSOP16

E522.04_TSSOP16

3.3V

350mA

-40°C to +125°C

TSSOP16

E522.05_TSSOP16

1.5V to 40V

500mA

-40°C to +125°C

TSSOP16

E522.06_TSSOP16

1.5V to 40V

350mA

-40°C to +125°C

TSSOP16

10 Ordering Information

Depending on choice of external components, the rectification / free-wheeling diode leakage current has to be

taken into account, because it poses a load to E522.0x, too. If it generates sufficient switching activity to trigger

the duty cycle IDLE condition, the converter will provide nominal output voltage.

Consider the leakage current of the free-wheeling diode for a reverse voltage of V

temperature. The above described measures a,b,c (in most cases choice of inductance L

the applications dimensioning to this additional load.