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Datasheet
16-Channel, 8-Bit PWM LED Driver
with I 2 C Compatible and
2-wire Serial Interface
BD7844AEFV
● General Description
BD7844AEFV is LED Display Driver. It can control
● Key Specifications
Operating power supply voltage range: 4.5V to 5.5V
16ch Nch Open Drain output for LED drive. It can
LED output terminal current:
80mA (Max.)
supports I C interface. HTSSOP-B28 (with Back-side
Conforming to I C -bus I/F (1MHz Fast mode Plus)
control the luminance of the LEDs by the setting of the
internal register, with 256 steps PWM control. It
2
metal for heat radiation) package.
● Features
16ch × 80mA (Absolute Maximum Rating)
2
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
Operating temperature range: -40 ℃ to +85 ℃
● Package W(Typ.) x D(Typ.) x H(Max.)
HTSSOP-B28
9.70mm x 6.40mm x 1.00mm
Built-in power-on reset circuit
● Applications
LED indicators and illuminators of Home appliance ， LED
Signboards ， Large LED Displays ，
Traffic Signboards, Amusement, hobby, etc.
● Typical Application Circuit
4.5V – 5.5V
4.7uF
VDD
BD7844AEFV
VLED (Max 20V)
● Pin Configuration [TOP VIEW]
I2CSEL
OUT0
RESETB
OUT1
From
Controller
SDA
SCL
A0
A1
A2
A3
OUT14
OUT15
GND
GND
GND
○ 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
1/14
TSZ02201-0G3G0CZ00310-1-2
15.Oct.2012 Rev.001
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