2.6

2.9

3.2

3.6

3.9

4.2

VIN (V)

3.34

3.31

3.29

3.26

3.23

3.21

3.18

3.16

3.13

25°C

-40°C

85°C

2.6

2.9

3.2

3.6

3.9

4.2

VIN (V)

3.90

3.85

3.80

3.75

3.70

3.65

25°C

-40°C

85°C

0.20

0.24

0.28

0.32

0.36

0.40

Headroom Voltage (VIN - VLED)

20.0

19.0

18.0

17.0

16.0

15.0

14.0

13.0

12.0

11.0

10.0

Code 101

Code 100

Code 111

Code 110

0.00 0.03 0.05 0.08 0.10 0.13 0.15 0.18 0.20

Headroom Voltage (VIN - VLED)

10.0

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.0

1.0

0.0

Code 011

Code 010

Code 001

Code 000

LM3560

SNOSB43B – SEPTEMBER 2011 – REVISED AUGUST 2013

www.ti.com

TYPICAL PERFORMANCE CHARACTERISTICS (continued)

unless otherwise noted).

Indicator Current vs Headroom voltage

Indicator Currents vs Headroom voltage

VLED = 2.5V

VLED = 2.5V

Indicate codes 100 - 111

Indicate codes 000 - 011

Figure 9.

Figure 10.

3.6A setting

3A setting

Figure 11.

Figure 12.

(1)

inductor current stops increasing. The value given in the Electrical Table is measured open loop and is found by forcing current into SW

until the current limit comparator threshold is reached. Closed loop data appears higher due to the delay between the comparator trip

point and the NFET turning off. This delay allows the closed loop inductor current to ramp higher after the trip point by approximately

8

Submit Documentation Feedback

Copyright © 2011–2013, Texas Instruments Incorporated

Product Folder Links: LM3560