PSSI2021SAY NXP Semiconductors, PSSI2021SAY Datasheet - Page 6
PSSI2021SAY
Manufacturer Part Number
PSSI2021SAY
Description
Manufacturer
NXP Semiconductors
Datasheet
1.PSSI2021SAY.pdf
(12 pages)
Specifications of PSSI2021SAY
Lead Free Status / RoHS Status
Compliant
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PSSI2021SAY_3
Product data sheet
8.1 Typical application circuits
LED driver
Figure 5
ensures a constant LED brightness.
Switching the current ON/OFF
The output can be switched ON and OFF by connecting a resistor-equipped transistor
(RET, e.g. PDTC124XU) as shown in
Fig 5.
Fig 6.
shows a typical application circuit for an LED driver. The constant current
LED driver application diagram
Switching the current ON/OFF; application diagram
Rev. 03 — 27 August 2009
IN/
OUT
Figure
GND
OUT
Constant current source in SOT353 package
VS
REXT
IOUT
6.
GND
GND
006aaa024
R
I
out
ext
V
VS
LED
REXT
IOUT
CC
006aaa025
R
I
out
ext
V
LED
PSSI2021SAY
CC
© NXP B.V. 2009. All rights reserved.
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