MAP3249 – 4-channel LED Driver for high brightness LEDs
Datasheet Version 1.3
MAP3249
4-channel LED Driver for High Br...
MAP3249 – 4-channel LED Driver for high brightness LEDs
Datasheet Version 1.3
MAP3249
4-channel LED Driver for High Brightness LEDs
General Description
Features
MAP3249 is a 4-channel LED driver optimized for LED 5V to 28V Input Voltage Range
backlight application targeting mid and large size LCD Drive up to 4 Channels
module. MAP3249 uses the boost MOSFET externally 60V FB Pin Voltage
and 4-channel current sources internally for driving high 0.4V Headroom Voltage
brightness White LEDs.
200mA Output Current per Channel
MAP3249 has 60V absolute Max. rating FB pins and Programmable Boost Switching Frequency
input voltage is ranged from 8.5V ~ 28V and max LED (100KHz ~ 500KHz)
current is 200mA per channel.
LED Current Set by both
MAP3249 has internal soft-start and various PWM and External DC Voltage
protections like output over-voltage, LED short/open, Unused Channel Detection
open
schottky diode, UVLO and thermal shutdown.
Boost Over Current Protection
MAP3249 has an unused channel detection function to Output Over Voltage Protection
not boost the output voltage to OVP at start-up.
LED Short / Open Protection
MAP3249 is available 16 leads SOIC and E-TSSOP
Schottky Diode Open Protection
with Halogen-free (fully RoHS compliant).
UVLO
Applications
High Brightness white LED backlighting for LCD TVs General LED lighting applications
Ordering Information
1
Part Number
Top Marking
Ambient Temperature Range
MAP3249SIRH
...