E522.31_16 Datasheet, PDF (1/20 Pages) ELMOS Semiconductor AG – CHANNEL SWITCHED MODE CONSTANT CURRENT CONTROLLER

1 CHANNEL SWITCHED MODE CONSTANT CURRENT CONTROLLER
PRODUCTION DATA - JUL 21, 2016
E522.31/33
Features
ÿÿ Switched-Mode, PWM LED Controller
ÿÿ 5V to 55V input voltage range, up to 80V boosted
output voltage
ÿÿ Boost-, SEPIC, Buck-Boost- or Buck Topology
supported
ÿÿ Constant Current Regulation implemented
ÿÿ High-Precision Differential High-Side Sense up to 60V
ÿÿ High-Frequency PWM Dimming Capability for
constant LED Color
ÿÿ Analog 10:1 Dimming Capability for LED Binning
ÿÿ Integrated Softstart
ÿÿ Advanced Error Detection (e.g. Over-Voltage,
Open-Load Detection, different Shorts or GND Loss)
ÿÿ Integrated Automotive LDOs for 5V & 3.3V
ÿÿ AEC-Q100 Qualified
ÿÿ Junction temperature range -40°C to +150°C
Applications
ÿÿ Automotive LED lighting Applications (daytime
running light, indicator, front- and rear light,
interior lighting etc.)
ÿÿ General Indoor and Outdoor Lighting and -Signals
ÿÿ TFT Backlighting
ÿÿ General Current driven Applications
General Description
E522.31 and E522.33 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 device is 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.
Multiple control- and monitoring functions, e.g. short-
and open load detection, over-temperature shutdown
and under-voltage lockout are implemented.
Ordering Information
Ordering-No.
E52231A61C
Oscillator
Spectrum
Softstart
Ramping
Package
spread Slow Ramping (SR) QFN32L5
E52231A61CXFR spread Fast Ramping (FR) QFN32L5
E52233A61C narrow Slow Ramping (SR) QFN32L5
E52233A61CXFR narrow Fast Ramping (FR) QFN32L5
Typical Application 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 ”
Elmos Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
Elmos Semiconductor AG
Data Sheet
QM-No.: 25DS0085E.01
1/20