PSSI2021SAY
Constant current source in SOT353 package
Rev. 03 — 27 August 2009
Product data sheet
1. Product profile
1.1 General description
Resistor-equipped PNP transistor with two diodes on one chip in a SOT353 (SC-88A)
plastic package. Stabilized output current of between 15 µA and 50 mA by connection of
an external resistor between pins 4 and 5.
1.2 Features
I One chip integrated constant current source
I Output current setting by use of an external resistor
I Very small package
I Reduces component count and board space
1.3 Applications
I Automotive applications
I Generic constant current source
I Constant current LED driver
I Active bias control for audio amplifiers
1.4 Quick reference data
Table 1.
Symbol
Iout
VS
Quick reference data
Parameter
output current
supply voltage
Conditions
Min Typ
0.015 -
-
-
Max Unit
50
mA
75
V