COMP

VDD

1

2

3

4

5

6

7

8

9

10

PGND

OVP

GDRV

ISNS

EN

PWM3

ISET

IFB2

FBP

FSW

IFB3

IFB1

VIN

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

PWM2

PWM1

IFBV

PWM4

PWM5

PWM6

AGND

IFB5

IFB4

IFB6

UVLO

FAULT

REF

TPS61196

www.ti.com

SLVSBG1C – OCTOBER 2012 – REVISED FEBRUARY 2013

DEVICE INFORMATION

HTSSOP-28 (PWP)

(TOP VIEW)

PIN FUNCTIONS

PIN

DESCRIPTION

NUMBER

NAME

(PWP)

1

UVLO

Low input voltage lock out. Use a resister divider from VIN to this pin to set the UVLO threshold

2

EN

Enable and disable pin. EN high=Enable, EN low=Disable

3,4,5,6,7,8

PWM1 to

PWM signal input pins. The frequency of PWM signal is in the range of 90Hz to 22kHz

PWM6

9

FBP

LED cross-short protection threshold program pin. Use a resistor to GND to set the threshold

10

ISET

Connecting a resistor to the pin programs the IFB pin current level for full brightness (i.e., 100% dimming)

11

IFBV

Minimum feedback voltage setting for LED strings

12,13,14,15,16,

IFB1 to IFB6

Regulated current sink input pins

17

18

AGND

Analog ground

19

OVP

Over-voltage protection detection input. Connect a resistor divider from output to this pin to program the

OVP threshold.

20

COMP

Loop compensation for the boost converter. Connect a RC network to make loop stable

21

REF

Internal reference voltage for the boost converter. Use a capacitor at this pin to adjust the soft start time.

When two chips operate in parallel, connect the master's REF pin to the slave's COMP pin.

22

PGND

External MOSFET current sense ground input

23

ISNS

External MOSFET current sense positive input

24

GDRV

External switch MOSFET gate driver output

25

VDD

Internal regulator output for IC internal power supply. Connect a 1.0µF ceramic capacitor to this pin.

26

FSW

Switching frequency setting pin. Use a resistor to set the frequency between 100kHz to 800kHz. An

external input voltage above 3.5V or below 0.5V disables the internal clock and makes the device as

slave device

27

FAULT

Fault indicator. Open-drain output. Output high impedance when fault conditions happen

28

VIN

Power supply input pin

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