U429B-FP Datasheet, PDF (1/4 Pages) TEMIC Semiconductors – Driver For IR Transmitter Diodes (Current Sink)

U429B-FP
Driver For IR Transmitter Diodes (Current Sink)
Technology: Bipolar
Features
D Constant current for IR signal 320 mA
D Undervoltage control with indicator driver
D Constant current output for control LED 100 mA
D Current stabilisation starts at V_CE = 1 V
D Control voltage V₄ = 2 to 13.2 V
D Minimum driver current I₄ = 0.4 mA
D Additional switching transistor I_C = 20 mA
Package: SO8
Figure 1. Block diagram
Pin Description
Pin Symbol
Function
1 Ground Negative supply terminal
2
V_O Switching output
(standby/ operation)
3
V_I Control input
(standby/ operation)
4
V_I Signal input to drive the current
source
Pin Symbol
Function
5
V_S1 Positive supply voltage terminal
6
I_O Undervoltage indicator output
(battery control)
7
I_O IR diode output signal
8
V_S2 Supply voltage for the control
stages of constant current outputs
TELEFUNKEN Semiconductors
1 (4)
Rev. A1, 27-Feb-96