Datasheet

LEDSYNC
LEDGND
LEDB
BATT
Device
*16...
BATT
120 W
160 W
032-060
TPS65950
www.ti.com SWCS032E–OCTOBER 2008–REVISED JANUARY 2011
10 LED Drivers
10.1 General Description
Two arrays of parallel LEDs are driven (dedicated for the phone light). The parallel LEDs are supplied by
VBAT and the external resistor value is given for each of them. The TPS65950 has two open-drain LED
drivers for keypad backlighting. The keypad backlighting must incorporate any required current limiting
and be rated for operation at the main battery voltage.
Figure 10-1 is a block diagram of the LED driver. Table 10-1 lists the electrical characteristics of the LED
driver.
Figure 10-1. LED Driver Block Diagram
For the component values, see Table 15-1.
Table 10-1. Electrical Characteristics
Parameter Conditions Min Typ Max Unit
I
O
= 160 mA 3 4
Software On resistance Ω
I
O
= 60 mA 10 12
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