BD7851FP Datasheet, PDF (1/3 Pages) Rohm – LED driver IC with built-in 16bit shift register

01W079B
LED driver IC with built-in 16bit shift register
BD7851FP
Description
The BD7851FP is a constant-current output LED
driver that incorporates a shift register and latch
circuit, which drives 16 LED lamps. Output value
of the constant-current can be set from 1mA to
50mA (Max.) by a single external resistor.
In addition, this IC incorporates a thermal-shut-down
circuit which detects the IC temperature rising and
turns the constant-current output OFF.
Features
Dimension (Units : mm)
13.6±0.2
2.75±0. 1
25
14
1 1.95±0. 1
13
0.8
0.36±0. 1
0.3Min.
0. 15
1) Drive capability: constant-current output 50mA (Max.)
2) Can set the constant-current output value by one external resistor.
3) 3 wire serial (Data, Clock, Latch) control from micro computer
4) With ENABLE pin
5) Power ON reset function
6) Built-in thermal-shut-down circuit
7) Low power consumption
8) Cascade connection
9) Allows multiple LED displays due to the dynamic operation.
10) Small power package HSOP25
HSOP25
Applications
All sets having micro computers and LED displays
Absolute Maximum Ratings (Ta=25˚C)
Parameter
Symbol
Limits
Unit
Power supply voltage
Vcc
0 ~ 7.0
V
Input voltage
VI
–0.3 ~ Vcc+0.3
V
Output voltage
Vo
0 ~ 10
V
Power dissipation
PD
* ₁₄₅₀
W
Storage temperature range
Tstg
–55 ~ +150
˚C
Operating temperature range
Topr
–20 ~ +85
˚C
*Derating : –11.6mW/˚C for operation above Ta=25˚C PCB (70mm×70mm×1.6mm glass epoxy board)
April, 2001