BD6067GU_11 Datasheet, PDF (1/30 Pages) Rohm – White Backlight LED Drivers for Small to Medium LCD Panels (Switching Regulator Type)

LED Drivers for LCD Backlights
White Backlight LED Drivers
for Small to Medium LCD Panels
(Switching Regulator Type)
BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN
No.11040ECT19
●Description
Switching Regulator type LED Driver Series for small LCD backlight are boost DC/DC converters possible to drive the white
LEDs at constant. It is possible that turning on white LED steadily by a series connection which has no current variation, and
by a fast transient response with current mode. And, BD6069GUT/BD6071HFN/BD6072HFN are white LED driver ICs with
synchronous rectification. With synchronous rectification (no external schottky diode required) and small package, they can
save mount space. BD6071HFN suited over voltage and over current limit from BD6069GUT/BD6072HFN.
●Features
1) Boost DC/DC converter
2) Adjustment of brightness by external PWM pulse
3) Possible to driving 3 LEDs (BD6071HFN )
4) Possible to driving 4 LEDs (BD6069GUT, BD6072HFN)
5) Possible to driving 8 LEDs (BD6067GU)
6) Soft start function (BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN)
7) Synchronous rectification Boost DC/DC converter (BD6069GUT, BD6071HFN, BD6072HFN)
8) No external schottky diode required (BD6069GUT, BD6071HFN, BD6072HFN)
9) Output Open • Short protect (BD6069GUT, BD6071HFN, BD6072HFN)
●Applications
These drivers are applicable for various fields such as mobile phones, portable game machines, Inter-phone camera,
audio player, portable DVD player, back light for printer display etc… and support light of the camera for the mobile phone,
simple flash. And, these can use power supply for OEL.
●Line up matrix
Parameter
BD6067GU
BD6069GUT
BD6071HFN
BD6072HFN
Input
voltage range
2.7 ~ 5.5V
2.7 ~ 5.5V
2.7 ~ 5.5V
2.7 ~ 5.5V
Switching
frequency
0.8 ~ 1.2MHz
0.8 ~ 1.2MHz
0.8 ~ 1.2MHz
0.8 ~ 1.2MHz
White LED
number
5~8
4
3
4
Operating
temperature range
-30 ~ +85℃
-30 ~ +85℃
-30 ~ +85℃
-30 ~ +85℃
Package
VCSP85H1
VCSP60N1
HSON8
HSON8
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2011.01 - Rev.C