BD6071HFN_12 Datasheet, PDF (1/19 Pages) Rohm – White LED Driver with Synchronous Boost Converter

Datasheet
White LED Driver
with Synchronous Boost Converter
and PWM Brightness Control for up to 3 LEDs in Series
BD6071HFN
●General Description
BD6071HFN is boost DC/DC converter possible to
boost output voltage up to 14V (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. And, BD6071HFN is white LED driver IC
with synchronous rectification. With synchronous
rectification (no external schottky diode required) and
small package, they can save mount space.
●Key Specifications
 Operating power supply voltage range: 2.7V to 5.5V
 Switching frequency:
1MHz(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 3 LEDs
 Soft start function
 Synchronous rectification Boost DC/DC converter
 No external schottky diode required
 Output Open • Short protect
HSON8
2.90mm x 3.00mm x 0.60mm
●Applications
This driver is 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.
●Typical Application Circuit
VIN
CIN
1μF
L
22μH
VIN SW
BD6071HFN
GND GNDA
EN TEST
VOUT
●Pin Configuration [Top View]
8 76 5
COUT
1μF
White LED
VFB
1 23 4
RFB
24Ω
Figure 1. Pin configuration HSON8 (Top view)
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product is not designed protection against radioactive rays
1/16
TSZ02201-0G3G0C200380-1-2
12.OCT.2012 Rev.001