0

10

20

30

40

50

60

70

80

90

100

0

10 20 30 40 50 60 70 80 90 100

DIMMING DUTY CYCLE (%)

VIN = 3.0 V

VIN = 3.6 V

VIN = 4.2 V

VIN = 5.0 V

C002

28

TPS61160, TPS61161

SLVS791E – NOVEMBER 2007 – REVISED JULY 2016

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Product Folder Links: TPS61160 TPS61161

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Copyright © 2007–2016, Texas Instruments Incorporated

8.2.4.3 Application Curves

Figure 28. Efficiency vs Duty Cycle

9 Power Supply Recommendations

The TPS61160 and TPS61161 are designed to operate from an input supply range of 2.7 V to 18 V. This input

supply must be well regulated and be able to provide the peak current required by the LED configuration and

inductor selected without voltage drop under load transients (start-up or rapid brightness change). The resistance

of the input supply rail must be low enough such that the input current transient does not cause the TPS61160

and TPS61161 supply voltage to droop more than 5%. Additional bulk decoupling located close to the input