ETA1661

www.etasolution.com

3

Empowering Thinkers

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT

EN Input Current

2

6

uA

Thermal Shutdown

155

°

C

Thermal Hysteresis

40

°

C

PIN DESCRIPTION

PIN #

PIN NAME

DESCRIPTION

1

VIN

Supply Voltage. Bypass with a 100nF HF filter plus a 10μF ceramic capacitor

to GND

2

SW

Inductor Connection. Connect an inductor Between SW and the regulator

output.

3

GND

Ground

4

BST

Bootstrap pin. Connect a 100nF capacitor from this pin to SW

5

EN

Enable pin for the IC. Drive this pin high to enable the part, low or floating to

disable.

6

FB

Feedback Input. Connect an external resistor divider from the output to FB and

GND to set VOUT.

FUNCTIONAL BLOCK DIAGRAM

COMP

Σ

COT

logic

Anti

Shoot

Through

Driver

Ilim

QZX

IN

FB

GND

SW

EN

BST

UVLO&

Thermal

shutdown

REG&

REF