E522.31 Datasheet, PDF (1/2 Pages) ELMOS Semiconductor AG – SWITCH-MODE CONSTANT CURRENT LED CONTROLLER FAMILY

SWITCH-MODE CONSTANT CURRENT LED CONTROLLER FAMILY
ADVANCE PRODUCT INFORMATION - MAR 6, 2013
E522.31/33
Features
General Description
ÿ Switch-mode, single LED controller
ÿ 5.0V to 55V input voltage range, up to 80V
boosted output voltage
ÿ Boost-, Boost-to-battery-, Buck-to-battery- or SEPIC-
topology
ÿ Constant current regulation implemented
ÿ Differential high-side sense up to 60V
ÿ High-frequency PWM dimming capability
ÿ 10:1 Analog dimming capability for LED binning
ÿ Digital dimming up to 5000:1 at 100Hz PWM
ÿ Integrated softstart
ÿ Advanced In-System Diagnostic (e.g. GND loss,
output-overload and highside-feedback
diagnostics)
ÿ Very low sleep mode currents of typ. 8μA
ÿ Integrated automotive LDOs for 5V & 3.3V
ÿ AEC-Q100 Qualified
ÿ Junction temperature range -40°C to +150°C
Applications
ÿ Automotive LED lighting applications
ÿ General indoor and outdoor lighting and signals
ÿ TFT backlighting
ÿ General current driven applications
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.
Ordering Information
Product ID
E522.31
E522.33
Oscillator spectrum
spread
narrow
Package
QFN32L5
QFN32L5
Typical Applications Circuit
VSM
VSM
AGND
VIN
VIN
ON
OSCIN
µC
PWDIM
DIM
I.C.
LGATE
NC
E522.31
NC
FBL
FBL
FBH
FBH
OVPIN
OVP
OVPO
NC
NC
NC
VSM
VIN
OVP FBH
FBL
DIM
“ Boost to GND Circuit ”
This document contains information on a new product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice.
ELMOS Semiconductor AG
Info Sheet
QM-No.: 25IS0085E.03