LED driver IC with built-in 16bit shift register
BD7851FP
Description Dimension (Units : mm)
Applications
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.
01W079B
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
All sets having micro computers and LED displays
April, 2001
Features
Absolute Maximum Ratings (Ta=25˚C)
Power supply voltage
Input voltage
Output voltage
Power dissipation
Parameter Symbol Limits Unit
Vcc
VI
Vo
PD
100
*
~
7.00 ~
Vcc+0.3–0.3 ~
1450
V
V
W
Storage temperature range
Operating temperature range
Tstg
Topr
+150–55 ~
+85–20 ~
˚C
˚C
V
*Derating : –11.6mW/˚C for operation above Ta=25˚C PCB (70mm×70mm×1.6mm glass epoxy board)
2.75±0. 1
1.95±0. 1
1.9
±
0.
1
0.
1
1
0.8
5.4
±
0.2
7.8
±
0.3
1
25
0.3Min.0.36±0. 1
0. 15
13
14
0.25
±
0.
1
13.6±0.2