Ver: 0.91

Jan 09, 2012

TEL: 886-3-5788833

http://www.gmt.com.tw

1

G5752/G5752A

Global Mixed-mode Technology

2A Step-down DC/DC

Features

2A Output Current

0.18

Ω Internal Power MOSFET Switch

Stable with Low ESR Output Ceramic Capaci-

tors

Up to 95% Efficiency

30µA Shutdown Mode

Fixed 380kHz Frequency

Thermal Shutdown

Cycle-by-Cycle Over Current Protection

Wide 4.5V to 24V Operating Input Range

Output Adjustable from 1.22V to 21.6V(G5752)

Output Adjustable from 0.92V to 21.6V(G5752A)

Available in SOP-8 & MSOP-10 (FD) Package

Applications

PC Monitors

DSL Modems

Distributed Power Systems

Pre-Regulator for Linear Regulators

General Description

The G5752/G5752A is a monolithic step-down switch

mode regulator with a built in internal power MOSFET. It

achieves 2A continuous output current over a wide input

supply range with excellent load and line regulation.

Current mode operation provides fast transient re-

sponse and eases loop stabilization.

Fault condition protection includes cycle-by-cycle cur-

rent limiting, output short circuit protection and thermal

shutdown. In shutdown mode the regulator draws

30µA of supply current. Programmable soft-start over-

writes the internal soft-start for various requirement of

output power up ramp and minimizes the inrush supply

current at initial startup.

The G5752/G5752A requires a minimum number of

readily available standard external components. It is

available in a SOP-8 & MSOP-10 (FD) package.

Ordering Information

ORDER

NUMBER

MARKING

TEMP.

RANGE

PACKAGE

(Green)

G5752P11U

G5752

-40°C to +85°C

SOP-8

G5752AP11U

G5752A

-40°C to +85°C

SOP-8

G5752F61U

G5752

-40°C to +85°C

MSOP-10 (FD)

G5752AF61U

G5752A

-40°C to +85°C

MSOP-10 (FD)

Note: P1: SOP-8

F6: MSOP-10 (FD)

1: Bonding Code

U : Tape & Reel

Pin Configuration

Typical Application Circuit

OUTPUT

3.3V/2A

R1

26.1k

Ω

1%

L1

15µH

D1

C5

10nF

4/6

BS

IN

EN

SS

LX

FB

COMP

GND

G5752A

C1

10µF

35V

C2

22µF/35V

CERAMIC

R2

10k

Ω

1%

ON

C3

3.9nF

R3

10k

Ω

C6

OPEN

INPUT

4.5V to 24V

C4

10nF

OFF

1/2

8/10

Note: Recommend connecting the Thermal Pad to

the Ground for excellent power dissipation.

NC

10

8

7

1

2

3

4

NC

BS

IN

SS

EN

COMP

FB

MSOP-10 (FD)

9

6

5

LX

GND

Thermal

Pad

G5752/G5752A

SOP-8

G5752/G5752A

LX

8

6

5

1

2

3

4

BS

IN

GND

SS

EN

COMP

FB

7

OUTPUT

2.5V/2A

R1

10.5k

Ω

1%

L1

15µH

D1

3/5

5/7

C5

10nF

4/6

6/8

BS

IN

EN

SS

LX

FB

COMP

GND

G5752

C1

10µF

35V

C2

22µF/35V

CERAMIC

R2

10k

Ω

1%

ON

C3

3.9nF

R3

10k

Ω

C6

OPEN

INPUT

4.5V to 24V

C4

10nF

OFF

1/2

2/4

7/9

8/10

SOP-8 / MSOP-10 (FD) Pin No.

2/4

3/5

5/7

6/8

7/9

Note: Recommend choosing the small Vf of Diode to avoid LX to GND smaller then -0.7V.

OUTPUT

3.3V/2A

R1

26.1k

Ω

1%

L1

15µH

D1

C5

10nF

4/6

BS

IN

EN

SS

LX

FB

COMP

GND

G5752A

C1

10µF

35V

C2

22µF/35V

CERAMIC

R2

10k

Ω

1%

ON

C3

3.9nF

R3

10k

Ω

C6

OPEN

INPUT

4.5V to 24V

C4

10nF

OFF

1/2

8/10

Note: Recommend connecting the Thermal Pad to

the Ground for excellent power dissipation.

NC

10

8

7

1

2

3

4

NC

BS

IN

SS

EN

COMP

FB

MSOP-10 (FD)

9

6

5

LX

GND

Thermal

Pad

G5752/G5752A

SOP-8

G5752/G5752A

LX

8

6

5

1

2

3

4

BS

IN

GND

SS

EN

COMP

FB

7

OUTPUT

2.5V/2A

R1

10.5k

Ω

1%

L1

15µH

D1

3/5

5/7

C5

10nF

4/6

6/8

BS

IN

EN

SS

LX

FB

COMP

GND

G5752

C1

10µF

35V

C2

22µF/35V

CERAMIC

R2

10k

Ω

1%

ON

C3

3.9nF

R3

10k

Ω

C6

OPEN

INPUT

4.5V to 24V

C4

10nF

OFF

1/2

2/4

7/9

8/10

SOP-8 / MSOP-10 (FD) Pin No.

2/4

3/5

5/7

6/8

7/9

Note: Recommend choosing the small Vf of Diode to avoid LX to GND smaller then -0.7V.