PSSI2021SAY Datasheet and Specifications PDF

The PSSI2021SAY is a Constant current source.

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Part NumberPSSI2021SAY Datasheet
ManufacturerPhilips Semiconductors
Overview 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 b.
* 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 pac.
Part NumberPSSI2021SAY Datasheet
DescriptionConstant current source
ManufacturerNXP Semiconductors
Overview 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 pi. 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 a.