E522.32/34

Elmos Semiconductor AG

Info Sheet

QM-No.: 25IS0078E.05

2 CHANNEL SWITCHED MODE CONSTANT CURRENT CONTROLLER

Elmos Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.

PRODUCTION DATA - JUL 29, 2016

Features

Applications

output voltage

supported

constant LED Color

Open-Load Detection, different Shorts or GND Loss)

running light, indicator, front- and rear light,

interior lighting etc.)

General Description

E522.32 and E522.34 are part of a family of fixed fre-

quency switched-mode high voltage LED power sup-

plies and controllers with high efficiency. Integrated

high-side sensing allows topologies related to the sup-

ply input (Boost-to-Battery) or to GND (Boost-to-GND).

The devices are suitable for operation in boost-, buck-

boost-, SEPIC- and buck-topologies, particularly in

harsh automotive environments.

The constant switching frequency is adjustable up to

600kHz by an external resistor or can be synchronized

in Master-Slave configurations with other devices. The

phase shift of 180° between channels essentially re-

duces EMI.

Multiple control- and monitoring functions, e.g. short-

and open load detection, over-temperature shutdown

and under-voltage lockout are implemented.

Ordering Information

Typical Application Circuit

FBL1

FBH1

“ Boost to Battery Circuit ”

“ Boost to GND Circuit ”

OVP1

OVP2

VSM

FBL2

FBL2

DIM2

VIN

VIN

FBH2

DIM1

VSM

FBH2

OVPIN2

OVPO

OVPIN1

FBH1

FBL1

ERRB2

µC

FBL1

FBH1

OVP1

OVP2

FBH2

FBL2

µC

µC

DIM1

VSM

LGATE2

LGATE1

PWDIM2

PWDIM1

OSCIN

ON

VIN

VIN

AGND

DIM2

E522.32

Ordering-No.

Oscillator

Spectrum

Softstart

Ramping

Package

E52232A61C

spread

Slow Ramping (SR) QFN32L5

E52232A61CXFR

spread

Fast Ramping (FR) QFN32L5

E52234A61C

narrow

Slow Ramping (SR) QFN32L5

E52234A61CXFR

narrow

Fast Ramping (FR) QFN32L5