40

50

60

70

80

90

100

0

50

100

150

200

250

300

OutputCurrent-mA

3LEDs(VOUT =12V)

VIN=8.5V

VIN=5V

VIN=3V

40

50

60

70

80

90

100

0

50

100

150

200

250

300

VIN=12V

VIN=8.5V

VIN=5V

6LEDs(VOUT =24V)

OutputCurrent-mA

6

TPS61165

SLVS790D – NOVEMBER 2007 – REVISED APRIL 2016

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Copyright © 2007–2016, Texas Instruments Incorporated

(1)

Acknowledge condition active 0, this condition is only applied in case the RFA bit is set. Open-drain output, line must be pulled high by

the host with resistor load.

7.5 Timing Requirements

MIN

NOM

MAX

UNIT

EasyScale TIMING

Start time of program stream

2

μs

End time of program stream

2

360

μs

High time low bit

Logic 0

2

180

μs

Low time low bit

Logic 0

360

μs

High time high bit

Logic 1

360

μs

Low time high bit

Logic 1

2

180

μs

Acknowledge output voltage low

Open drain, Rpullup =15

k

0.4

V

Acknowledge valid time

2

μs

Duration of acknowledge condition

512

μs

7.6 Typical Characteristics

Table 1. Table of Graphs

FIGURE

Efficiency

Figure 1

Efficiency

Figure 2

Current limit

Figure 3

Current limit

Figure 4

Easyscale step

Figure 13

PWM dimming linearity

Figure 14

Output ripple at PWM dimming

Figure 15

Switching waveform

Figure 5

Start-up

Figure 6

Open LED protection

Figure 7

Figure 1. Efficiency vs Output Current

Figure 2. Efficiency vs Output Current