MAP3511 Datasheet, PDF (1/14 Pages) MagnaChip Semiconductor. – Average Current Control Buck Controller for LED Backlight

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Datasheet Version 1.0
Datasheet - MAP3511
Average Current Control Buck Controller for LED Backlight
General Description
MAP3511 is an average-mode current control buck
controller for LED backlight application. It does not
require an additional dimming MOSFET and utilizes
constant off-time control and average current control
feedback without external loop compensation or high-
side current sensing.
MAP3511 features ±1% CS voltage accuracy and
has dedicated analog dimming input up to 3V. It can
be powered from 8.5V ~ 18V supply.
MAP3511 provides MOSFET DS short detection(FLT
output), SCP and UVLO.
MAP3511 is available 8 leads SOIC with Halogen-
free (fully RoHS compliant).
Features
 8.5V to 18V Input Voltage Range
 Average-Mode Current Control
 Programmable Constant off-time
 Up to 3V Analog Dimming Input
 1% CS Voltage Accuracy
 Direct PWM Dimming Input
 Fault Output(MOSFET Drain-Source Short)
 Short Circuit Protection
 UVLO
 8 Leads SOIC Package with Halogen-free
Applications
 High Brightness white LED backlighting for LCD
TVs
 General LED lighting applications
Ordering Information
Part Number
MAP3511SIRH
Top
Marking
MAP3511
Ambient
Temperature Range
-40℃ to +85℃
1
Typical Application
Package
8Leads SOIC
RoHS Status
Halogen Free
VIN
VCC
PWM
ADIM
CIN
CVCC
MAP3511
2 _VCC
7
FLT
RPWM
RADIM
CADIM
6
PWM
8
ADIM
GATE ⁴
CS ¹
RTOFF
5
TOFF
GND 3
D
FLT
RG
Q
RF
CF
RCS
COUT
L
LEDs
Dec 12^th 2014