BD1754HFN-TR Datasheet, PDF (1/19 Pages) Rohm – Constant Current LED Driver with 64 Dimming Steps for up to 4 LEDs

Datasheet
Constant Current LED Driver
with 64 Dimming Steps for up to 4 LEDs
BD1754HFN
●General Description
The multi-level brightness control LED works as a
constant current driver in 64 steps, so that the driving
current can be adjusted finely. BD1754HFN is best
suited to turn on LEDs that require high-accuracy LED
brightness control.
●Key Specification
 Operating power supply voltage range: 2.7V to 5.5V
 Quiescent Current:
0.1μA (Typ.)
 Operating temperature range:
-30°C to +85°C
●Package W(Typ.) x D(Typ.) x H(Max.)
●Features
 Current regulation for LED up to 4 parallels
 Adjustable constant current 64 steps
 High accuracy and matching of each current
channel (0.5% Typ.)
 Brightness control via a single-line digital control
interface (Uni-Port Interface Control = UPIC)
●Applications
This driver can be used in various fields such as
mobile phones, portable game machines and etc.
HSON8
2.90mm x 3.00mm x 0.60mm
Figure 1. HSON8
●Typical Application Circuit
Power Supply
VIN
Cin 0.1µF
EN
L1
L2
L3
L4
BD1754HFN
GND
Figure 2. Application Circuit
ISET
R_{ISET 120kΩ}
(When ILED-max =32mA)
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111ï½¥14ï½¥001
○This product is not designed protection against radioactive rays
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TSZ02201-0G3G0C200060-1-2
9.NOV.2012 Rev.001