Ver: 0.5

May 30, 2012

TEL: 886-3-5788833

http://www.gmt.com.tw

1

G5997

Global Mixed-mode Technology

Step-up Controller for 12 Strings 60mA White LED Driver

Features

5V~30V input voltage range

High Power Current Mode DC/DC boost

Controller

Drives up to 12 strings in parallel

100Hz~2KHz PWM or DC Input True PWM Dim-

ming

2.5% Current Matching Accuracy Between

Strings

Programmable Switching Frequency

Programmable Slope Compensation

Input Under Voltage Protection

Output Short Circuit Protection

Hiccup Mode Protection for Output Over Voltage

Protection and LED String Short Protection

Thermal Shutdown

Available in SOP-28, TSSOP-28 (FD) and

TQFN5X5-28 Package

Applications

Desktop LCD Flat Pannel Displays

Flat Pannel Video Displays

LCD TVs and Monitors

General Description

The G5997 is current mode DC/DC controller that

drives up to 12 strings connected in parallel configura-

tion with multiple LEDs in each string connected in se-

ries. External current sense resistor and slope com-

pensation resistor make it flexible for various applica-

tions. PWM dimming is implemented with external

PWM input signal or DC input signal. The dimming fre-

quency can be programmed by an external setting ca-

pacitor.

The G5997 includes hiccup protection from short cir-

cuits, with automatic recovery after the fault condition is

cleared.

The G5997 is available in a SOP-28, TSSOP-28 (FD)

and TQFN5X5-28 package.

Ordering Information

ORDER

NUMBER

MARKING

TEMP.

RANGE

PACKAGE

(Green)

G5997P61U

G5997

-20°C to +85°C

SOP-28

G5997F41U

G5997

-20°C to +85°C

TSSOP-28 (FD)

G5997R61U

5997

-20°C to +85°C

TQFN 5X5-28

Note: P6:SOP-28 F4:TSSOP-28 (FD) R6:TQFN 5X5-28

1 : Bonding Code

U : Tape & Reel

Pin Configuration

G5997 TQFN5X5-28

1

2

3

4

5

6

16

17

18

19

20

21

Thermal

Pad

7

15

G5997

LED1

LED2

LED3

LED4

LED5

LED6

LED7

LED8

LGND

VDD

COMP

EN

DBRT

GND

ISET

BOSC

LED12

CS

SOP-28

24

23

22

21

20

19

18

17

16

15

5

6

7

8

9

10

11

12

1

4

3

2

VIN

OVP

LED11

LED10

13

14

LED9

LGND

28

27

26

VFAULT

25

RT

PGND

GATE

G5997

TSSOP-28 (FD)

24

23

22

21

20

19

18

17

16

15

5

6

7

8

9

10

11

12

1

4

3

2

Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.

13

14

28

27

26

25

Thermal

Pad

NC

VDD

COMP

EN

DBRT

GND

ISET

BOSC

LED12

VIN

LED11

LED10

LED9

RT

LED1

LED2

LED3

LED4

LED5

LED6

LED7

LED8

CS

OVP

NC

VFAULT

PGND

GATE

NC

VDD

COMP

EN

DBRT

GND

VIN

LED2

LED3

LED4

LED5

LED6

LED7

LED8

G5997 TQFN5X5-28

1

2

3

4

5

6

16

17

18

19

20

21

Thermal

Pad

7

15

G5997

LED1

LED2

LED3

LED4

LED5

LED6

LED7

LED8

LGND

VDD

COMP

EN

DBRT

GND

ISET

BOSC

LED12

CS

SOP-28

24

23

22

21

20

19

18

17

16

15

5

6

7

8

9

10

11

12

1

4

3

2

VIN

OVP

LED11

LED10

13

14

LED9

LGND

28

27

26

VFAULT

25

RT

PGND

GATE

G5997

TSSOP-28 (FD)

24

23

22

21

20

19

18

17

16

15

5

6

7

8

9

10

11

12

1

4

3

2

Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.

13

14

28

27

26

25

Thermal

Pad

NC

VDD

COMP

EN

DBRT

GND

ISET

BOSC

LED12

VIN

LED11

LED10

LED9

RT

LED1

LED2

LED3

LED4

LED5

LED6

LED7

LED8

CS

OVP

NC

VFAULT

PGND

GATE

NC

VDD

COMP

EN

DBRT

GND

VIN

LED2

LED3

LED4

LED5

LED6

LED7

LED8