E522.31/33

ELMOS Semiconductor AG

Info Sheet

QM-No.: 25IS0085E.03

This document contains information on a new product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice.

SWITCH-MODE CONSTANT CURRENT LED CONTROLLER FAMILY

ADVANCE PRODUCT INFORMATION - MAR 6, 2013

Features

Applications

boosted output voltage

topology

output-overload and highside-feedback

diagnostics)

General Description

E522.31 and E522.33 are parts of a family of fixed fre-

quency switch-mode high voltage LED power supplies

and controllers with high efficiency. Integrated high-

side sensing allows topologies related to GND (Boost-

to-GND or SEPIC) as well as related to input voltage

(Boost-to-battery or Buck-to-battery, particularly in

harsh automotive environments.

The switching frequency is adjustable up to 600kHz by

an external resistor or can be synchronized in Master-

Slave configurations with other devices. Devices are

available with spread spectrum oscillators (E522.31)

and without spread spectrum (E522.33) versions to op-

timize size and effort of the application. Multiple con-

trol- and monitoring functions, e.g. short- and open

load detection, over-temperature shutdown and under-

voltage lockout are implemented.

Product ID

Oscillator spectrum

Package

E522.31

spread

QFN32L5

E522.33

narrow

QFN32L5

Ordering Information

E522.31

“ Boost to GND Circuit ”

OVP

VSM

NC

FBL

DIM

FBH

VSM

NC

NC

OVPO

OVPIN

FBH

FBL

NC

VSM

FBL

FBH

OVP

µC

DIM

NC

VIN

LGATE

I.C.

PWDIM

OSCIN

ON

VIN

VIN

AGND

Typical Applications Circuit