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BD1754HFN Datenblatt(PDF) 1 Page - Rohm

Teilenummer BD1754HFN
Bauteilbeschribung  Constant Current LED Driver with 64 Dimming Steps for up to 4 LEDs
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Hersteller  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

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○Product structure:Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays
1/16
TSZ02201-0G3G0C200060-1-2
9.NOV.2012 Rev.001
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
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.
●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.
●Typical Application Circuit
●Key Specification
 Operating power supply voltage range: 2.7V to 5.5V
 Quiescent Current:
0.1
μA (Typ.)
 Operating temperature range:
-30°C to +85°C
●Package W(Typ.) x D(Typ.) x H(Max.)
Figure 2. Application Circuit
HSON8
2.90mm x 3.00mm x 0.60mm
Figure 1. HSON8
BD1754HFN
VIN
ISET
GND
EN
L4
L3
L2
L1
Power Supply
0.1µF
120k
(When ILED-max =32mA)
Cin
RISET


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