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TPS61042DRBR Datasheet(PDF) 4 Page - Texas Instruments

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Part # TPS61042DRBR
Description  CONSTANT CURRENT LED DRIVER
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS61042DRBR Datasheet(HTML) 4 Page - Texas Instruments

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SW
8
OVP
7
GND
6
CTRL
5
LED
DRB PACKAGE
(TOP VIEW)
1
RS 2
VIN 3
FB 4
Exposed
Thermal
Die Pad
TPS61042
SLVS441C – DECEMBER 2002 – REVISED MARCH 2007
The exposed thermal die pad is connected to GND.
Terminal Functions
TERMINAL NAME NO.
I/O
DESCRIPTION
Combined enable and PWM control pin. If CTRL is constantly pulled high, the device is enabled and the
CTRL
5
I
internal LED switch (Q2) is constantly turned on. When CTRL is pulled to GND, the device is disabled.
Apply a PWM signal (100 Hz to 50 kHz) to this pin to control the brightness of the LEDs
FB
4
I
Feedback. FB regulates the LED current through the sense resistor by regulating the voltage across RS to
252 mV.
GND
6
GND
LED
1
I
Input of the LED switch (Q2). Connect the LEDs to this pin.
OVP
7
I
Overvoltage protection. OVP is connected to the output capacitor of the converter.
RS
2
O
Output of the internal LED switch. The sense resistor that programs the LED current is connected to RS.
SW
8
I
Drain of the integrated switch (Q1)
VIN
3
I
Input supply pin.
4
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