BD7844AEFV-LB Datasheet, PDF (1/18 Pages) Rohm – 16-Channel, 8-Bit PWM LED Driver with I2C Compatible and 2-wire Serial Interface

Datasheet
16-Channel, 8-Bit PWM LED Driver
with I²C Compatible and
2-wire Serial Interface
BD7844AEFV-LB
General Description
This is the product guarantees long time support in
Industrial market.
BD7844AEFV-LB is LED Display Driver. It can control
16ch Nch Open Drain output for LED drive. It can
control the luminance of the LEDs by the setting of the
internal register, with 256 steps PWM control. It
supports I²C interface. HTSSOP-B28 (with Back-side
metal for heat radiation) package.
Key Specifications
„ Operating power supply voltage range: 4.5V to 5.5V
„ LED output terminal current:
80mA (Max.)
„ Operating temperature range:
-40℃ to +85℃
Package W(Typ.) x D(Typ.) x H(Max.)
Features
„ Long time support product for Industrial applications
„ 16ch × 80mA (Absolute Maximum Rating)
„ Conforming to I²C -bus I/F (1MHz Fast mode Plus)
„ Either of interactive or single direction can be
selected with the I2CSEL pin. (2MHz clock
frequency on single direction)
„ Independent setting of output brightness is possible
by register setting for each channel. (PWM 256
steps)
„ Built-in thermal shutdown (TSD）circuit
„ Built-in power-on reset circuit
HTSSOP-B28
9.70mm x 6.40mm x 1.00mm
Applications
Industrial Equipment, LED indicators and illuminators for
Industrial or Home appliance，LED Signboards，Large
LED Displays，
Traffic Signboards, Amusement, hobby, etc.
Typical Application Circuit
4.7uF
4.5V – 5.5V
VLED (Max 20V)
VDD
BD7844AEFV-LB
From
Controller
I2CSEL
RESETB
SDA
SCL
A0
A1
A2
A3
OUT0
OUT1
OUT14
OUT15
GND
GND
GND
●Pin Configuration [TOP VIEW]
○Product structure：Silicon monolithic integrated circuit ○This product has no designed protection against radioactive rays
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
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TSZ02201-0G3G0CZ10310-1-2
26.Feb.2014 Rev.002