Datasheet

LEDSYNC
LEDGND
LEDB
BATT
Device
*16...
BATT
120 W
160 W
037-045
TPS65930/TPS65920
www.ti.com SWCS037G–MAY 2008–REVISED APRIL 2011
9 LED Drivers
9.1 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 LED. The TPS65920/TPS65930 device supports
two open-drain LED drivers for the keypad backlight, having drain connections tolerant of the main battery
voltage.
Figure 9-1 is the LED driver block diagram. Table 9-1 lists the electrical characteristics of the LED driver.
Figure 9-1. LED Driver Block Diagram
NOTE
For the component values, see Table 14-1.
Table 9-1. LED Driver Electrical Characteristics
Parameter Conditions Min Typ Max Unit
I
O
= 160 mA 3 4
SW On resistance Ω
I
O
= 60 mA 10 12
Copyright © 2008–2011, Texas Instruments Incorporated LED Drivers 81
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