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DISCRETE SEMICONDUCTORS
DATA SHEET
k, halfpage
MBD127
PSSI2021SAY Constant current source
Product specification 2001 May 07
Philips Semiconductors
Product specification
Constant current source
FEATURES • One chip constant current source • Reduced number of components and board space. APPLICATIONS • Especially suitable for space reduction in, for example, LED driving circuits or active bias controlling. DESCRIPTION Resistor equipped PNP transistor with two diodes on one chip in a plastic SC-88A package. Built-in bias resistor and two diodes allow operation as constant current source. The stabilized current can be adjusted between 15 µA and 50 mA by connection of external resistors between pins 4 and 5.