MAP3249 Datasheet, PDF (1/19 Pages) MagnaChip Semiconductor. – 4-channel LED Driver for High Brightness LEDs

Confidential
Datasheet Version 1.2
Datasheet - MAP3249
4-channel LED Driver for High Brightness LEDs
General Description
MAP3249 is a 4-channel LED driver optimized for
LED backlight application targeting mid and large size
LCD module. MAP3249 uses the boost MOSFET
externally and 4-channel current sources internally for
driving high brightness White LEDs.
MAP3249 has 55V absolute Max. rating FB pins and
input voltage is ranged from 8.5V ~ 28V and max LED
current is 200mA per channel.
MAP3249 features internal soft-start and ±2.5%
LED current accuracy including matching between
channels.
MAP3249 has various protections like output over-
voltage, LED short/open, open schottky diode, UVLO
and thermal shutdown.
MAP3249 has an unused channel detection function
to not boost the output voltage to OVP at start-up.
MAP3249 is available 16 leads SOIC and E-TSSOP
with Halogen-free (fully RoHS compliant).
Features
8.5V to 28V Input Voltage Range
Drive up to 4 Channels
55V FB Pin Voltage
0.4V Headroom Voltage
200mA Output Current per Channel
±2.5% Current Accuracy
Programmable Boost Switching Frequency
(100KHz ~ 500KHz)
LED Current Set by both
PWM and External DC Voltage
Unused Channel Detection
Boost Over Current Protection
Output Over Voltage Protection
LED Short / Open Protection
Schottky Diode Open Protection
UVLO
Applications
High Brightness white LED backlighting for LCD
TVs and monitors
General LED lighting applications
1
Ordering Information
Part Number
MAP3249SIRH
MAP3249TERH
Top
Marking
MAP3249
MAP3249
Typical Application
Ambient
Temperature Range
-40℃ to +85℃
-40℃ to +85℃
Package
16Leads SOIC
16Leads E-TSSOP
RoHS Status
Halogen Free
Halogen Free
Oct 8^th 2014