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TPS60251 Datenblatt(Datasheet) 5 Page - Texas Instruments

Teile-Nr. TPS60251
Beschreibung  HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs WITH I2C INTERFACE
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Hersteller  TI [Texas Instruments]
Homepage  http://www.ti.com
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TPS60251
SLVS767 – APRIL 2007
TERMINAL FUNCTIONS (continued)
TERMINAL
I/O
DESCRIPTION
NAME
NO.
Maximum LED current setting input. Connect a resistor (RIS) between this pin and GND to set the
IS
17
I
full-scale white LED current for sub (DS1, DS2), main (DM1, DM2, DM3, DM4), and DM5 LEDs. See the
Setting the LED Current section for details on selecting the correct value for RIS.
C1–
19
Connect to the flying capacitor C1
C2+
20
Connect to the flying capacitor C2
C2–
21
Connect to the flying capacitor C2
C1+
22
Connect to the flying capacitor C1
Connect the anodes of the sub, main, and aux display white LEDs to this pin. Bypass VOUT to GND with
VOUT
23
O
a 4.7-
µF or greater ceramic capacitor.
Supply voltage input. Connect to a 3-V to 6-V input supply source. Bypass VIN to GND with a 1-
µF or
VIN
24
I
greater ceramic capacitor.
5
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