BL0100A Datasheet, PDF (1/19 Pages) Sanken electric – High Efficiency For LED Backlight

High Efficiency
For LED Backlight, 1ch LED Driver IC
BL0100A
General Descriptions
BL0100A is LED driver IC for LED backlight, and it
can do dimming to 0.02 % by external PWM signal.
This IC realizes a high efficiency by the boost
convertor control that absorbs variability on V_F.
The product easily achieves high cost-performance
LED drive system with few external components and
enhanced protection functions.
Features and Benefit
Boost convertor
● Current-Mode type PWM Control
● PWM frequency is 100 kHz to 500kHz
● Maximum On Duty is 90 %
LED current control
● PWM Dimming
● Analog Dimming
● High contrast ratio is 1 / 5000
● Accuracy of Reg output voltage is ± 2 %
Protection functions
● Error Signal Output
● Overcurrent Protection for Boost Circuit (OCP)
------------------------------------------------- Pulse-by-pulse
● Overcurrent Protection for LED Output (LED_OCP)
------------------------------------------------- Pulse-by-pulse
● Overvoltage Protection (OVP) -------------- Auto restart
● Output Open/Short Protection --------------- Auto restart
● Thermal Shutdown (TSD)-------------------- Auto restart
Typical Application Circuit
Package
SOIC14
Not to scale
Electrical Characteristics
 Absolute maximum voltage of VCC pin is 20 V
 Adjustable PWM frequency, 100 kHz to 500 kHz
Applications
 LED backlights
 LED lighting etc.
BL0100A
VCC
DRV
VREF
OC
PWM
ER
FSET
REG
COMP
GND
OVP
SW
IFB
BL0100A-DS Rev.1.1
SANKEN ELECTRIC CO.,LTD.
1
Nov. 27, 2013