BD6072HFN-TR Datasheet, PDF (1/17 Pages) Rohm – Boost DC/DC converter, Adjustment of brightness by external PWM pulse

Datasheet
White LED Driver
with PWM Brightness Control
for up to 8 LEDs in Series
BD6067GU
●General Description
BD6067GU is boost DC/DC converters possible to
boost output voltage up to 30V (Max.) and 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.
●Key Specifications
 Operating power supply voltage range: 2.7V to 5.5V
 Switching frequency:
1.0MHz(Typ.)
 Quiescent Current:
0.1μA (Typ.)
 Operating temperature range:
-30°C to +85°C
●Package W(Typ.) x D(Typ.) x H(Max.)
●Features
■ Boost DC/DC converter
■ Adjustment of brightness by external PWM pulse
■ Possible to driving 8 LEDs
■ Soft start function
VCSP85H1
1.68mm x 1.68mm x 1.00mm
●Typical Application Circuit
L1
22µH
D1
VIN
CIN
1µF
VIN SW
BD6067GU
GND GNDA
EN
OFF ON
●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.
●Pin Configuration [Bottom View]
VOUT
COUT
1µF
20mA
VFB
VDAC
R1
10Ω
C1 C2 C3
B1
B3
A1 A2 A3
Figure 1. Pin Configuration
○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays
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© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
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TSZ02201-0G3G0C200080-1-2
5.OCT.2012 Rev.001