E522.32_16 Datasheet, PDF (1/2 Pages) ELMOS Semiconductor AG – 2 CHANNEL SWITCHED MODE CONSTANT CURRENT CONTROLLER

2 CHANNEL SWITCHED MODE CONSTANT CURRENT CONTROLLER
PRODUCTION DATA - JUL 29, 2016
E522.32/34
Features
ÿÿ Dual 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
E522.32 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
Ordering-No.
E52232A61C
Oscillator
Spectrum
Softstart
Ramping
Package
spread Slow Ramping (SR) QFN32L5
E52232A61CXFR spread Fast Ramping (FR) QFN32L5
E52234A61C narrow Slow Ramping (SR) QFN32L5
E52234A61CXFR narrow Fast Ramping (FR) QFN32L5
Typical Application Circuit
VSM
VSM
AGND
VIN
VIN
ON
OSCIN
µC
PWDIM1
DIM1
µC
PWDIM2
LGATE1
DIM2
LGATE2
E522.32
ERRB2
FBL1
FBH1
OVPIN1
OVPO
OVPIN2
FBH2
FBL2
µC
FBL1
FBH1
OVP1
OVP2
FBH2
FBL2
VSM
FBL1 FBH1
VIN
OVP1
DIM1
“ Boost to Battery Circuit ”
OVP2 FBH2
FBL2 DIM2
VIN
“ 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
Info Sheet
QM-No.: 25IS0078E.05