BD7851FP

Features:

 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


Application

All sets having micro computers and LED displays


Pinout




Specifications

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
Operating temperature range	Topr	20 ~ +85

*Derating : 11.6mW/ for operation above Ta=25  PCB (70mm*70mm*1.6mm glass epoxy board)  


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 BD7851FP incorporates a thermal-shut-down circuit which detects the IC temperature rising and turns the constant-current output OFF.