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-Q1

www.ti.com

SNVSA79 – MARCH 2015

5 Pin Configuration and Functions

PWP Package

28-Pin HTSSOP

Top View

Pin Functions

PIN

TYPE

DESCRIPTION

NUMBER

NAME

1

UVLO

I

threshold.

2

EN

I

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

PWM1 to

3,4,5,6,7,8

I

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

PWM6

9

FBP

O

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

Connecting a resistor to the pin programs the IFB pin current level for full brightness (that is,

10

ISET

O

100% dimming).

11

IFBV

O

Minimum feedback voltage setting for LED strings.

IFB1 to

12,13,14,15,16,17

I

Regulated current sink input pins

IFB6

18

AGND

G

Analog ground

Overvoltage protection detection input. Connect a resistor divider from output to this pin to

19

OVP

I

program the OVP threshold.

20

COMP

O

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

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

21

REF

O

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

COMP pin.

22

PGND

GND

External MOSFET current sense ground.

23

ISNS

I

External MOSFET current sense positive input.

24

GDRV

O

External switch MOSFET gate driver output.

Internal regulator output for device internal power supply. Connect a 1-µF ceramic capacitor to

25

VDD

O

this pin.

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

26

FSW

O

800 kHz. An external input voltage above 3.5 V or below 0.5 V disables the internal clock and

makes the device as slave device.

27

FAULT

O

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

28

VIN

I

Power supply input pin

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