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Datasheet
3-Channel Charge Pump
White LED Driver
with 16 Dimming Steps and 1-wire Serial Interface
BD82103GWL
● General Description
BD82103GWL is charge pump type 2 light or 3 light
● Key Specifications
? Operating power supply voltage range: 2.7V to 5.5V
parallel LED driver for the portable instruments.
This IC not only ensures efficient boost by
automatically changing the boost rate but also works
? LED maximum current:
? Oscillator frequency:
? Quiescent Current:
20mA (Typ.)
0.85MHz(Typ.)
0.1 μ A (Typ.)
as a constant current driver in 16 steps, so that the
driving current can be adjusted finely. This IC is best
? Operating temperature range: -30 ℃ to +85 ℃
suited to turn on white LEDs that require high-accuracy
LED brightness control.
● Features
?
2light or 3light parallel LED driver is mounted
?
16-step LED current adjust function
?
Inter-LED relative current accuracy: 5% or less
?
Driving control via a single-line digital
control interface
?
Automatic transition charge pump type DC/DC
converter (×1,×1.5, x2)
?
High efficiency achieved (Maximum over 93%)
?
It transits for the most suitable power operating
by the LED terminal process
of the 3rd light when 2 light driving
?
Various protection functions such as output
voltage protection and thermal shutdown circuit
are mounted.
● Package
UCSP50L1
W(Typ.) x D(Typ.) x H(Max.)
1.80mm x 1.40mm x 0.55mm
● Typical Application Circuit (3 Light)
● Pin Configuration [Bottom View]
C
LED1
GND
VBAT
C1N
index
B
LED2
EN
C1P
A
LED3
1
VOUT
2
C2N
3
C2P
4
Figure 2. Pin Configuration
Figure 1. Typical Application Circuit
○ Product structure ： Silicon monolithic integrated circuit
○ This product is not designed protection against radioactive rays
www.rohm.com
? 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 14 ? 001
1/10
TSZ02201-0G3G0C200240-1-2
16.Oct.2012 Rev.001
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