Ver: 0.93

Sep 10, 2013

TEL: 886-3-5788833

http://www.gmt.com.tw

1

G9661

Global Mixed-mode Technology

Peak 3A, Low Dropout Regulator with Enable

Features

Adjustable Output Low to 0.8V

Input Voltage as Low as 1.4V and VPP Voltage

5V

300mV Dropout @ 2A, VO 2.5V

Over Current and Over Temperature Protection

Enable Pin

Low Reverse Leakage (Output to Input )

TSOT-23-6,

SOP-8(FD),

MSOP-10(FD)

and

TDFN3X3-10 Packages

±1.5% ADJ Voltage

VO Power OK Signal

2.5V Options by Setting ADJ Pin Below 0.2V

and Adjustable Externally Using Resistors

VO Pull Low Resistance when Disable

VO Soft Start When Enable

Applications

Motherboards

Peripheral Cards

Network Cards

Set Top Boxes

Notebook Computers

General Description

The G9661 is a high performance positive voltage

regulator designed for use in applications requiring

very low Input voltage and very low dropout voltage at

VPP voltage 5V with output voltage programmable as

low as 0.8V. The G9661 features ultra low dropout,

Additionally, the G9661 has an enable pin to further

reduce power dissipation while shutdown. The G9661

provides excellent regulation over variations in line,

load and temperature. The G9661 provides a power

OK signal to indicate if the voltage level of VO reaches

92% of its rating value.

The G9661 is available in the power TSOT-23-6,

SOP-8(FD), MSOP-10(FD) and TDFN3X3-10 package.

It is available with 2.5V internally preset outputs that

are also adjustable using external resistors.

Ordering Information

ORDER

NUMBER

MARKING

TEMP.

RANGE

PACKAGE

(Green)

G9661-25ADJTP1U

961Ax

-40°C~+85°C

TSOT-23-6

G9661-25ADJF11U

9661-25

-40°C~+85°C

SOP-8 (FD)

G9661-25ADJF61U

9661-25

-40°C~+85°C

MSOP-10 (FD)

G9661-25ADJRE1U

9661A

-40°C~+85°C

TDFN3X3-10

Note:TP: TSOT-23-6

F1: SOP-8 (FD)

F6: MSOP-10 (FD)

RE: TDFN3X3-10

1:Bonding Code

U : Tape & Reel

e.g. 25 denotes the 2.5V output voltage

Pin Configuration

Typical Application Circuit

VIN

VO

R1

R2

VEN

VIN

VO

ADJ

GND

G9661

0.8 (R1+R2)

VO =

R2

Volts

C1

10µF

C2

10µF

R2<120k

Ω is recommended

VPP

VPP (5V)

POK

VIN

10K

Ω

C

PP

1µF

VIN

POK

VEN

VPP

GND

ADJ

VO

NC

SOP-8 (FD)

G9661

8

6

5

1

2

3

4

7

Thermal

Pad*

NC

10

8

7

1

2

3

4

POK

VEN

VIN

GND

ADJ

VO

VO

MSOP-10 (FD)

G9661

9

6

5

VPP

NC

Thermal

Pad*

ADJ

VEN

VPP

GND

VO 1

2

3

4

5

6

G9661

VIN

TSOT-23-6

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

TDFN3X3-10

4

G9661

1

2

3

8

7

6

NC

VIN

5

9

10

ADJ

TDFN3X3-10

4

1

2

3

8

7

6

VO

NC

VO

VPP

VIN

5

9

10

POK

VEN

Thermal

Pad*

(GND)

VIN

VO

R1

R2

VEN

VIN

VO

ADJ

GND

G9661

0.8 (R1+R2)

VO =

R2

Volts

C1

10µF

C2

10µF

R2<120k

Ω is recommended

VPP

VPP (5V)

POK

VIN

10K

Ω

C

PP

1µF

VIN

POK

VEN

VPP

GND

ADJ

VO

NC

SOP-8 (FD)

G9661

8

6

5

1

2

3

4

7

Thermal

Pad*

NC

10

8

7

1

2

3

4

POK

VEN

VIN

GND

ADJ

VO

VO

MSOP-10 (FD)

G9661

9

6

5

VPP

NC

Thermal

Pad*

ADJ

VEN

VPP

GND

VO 1

2

3

4

5

6

G9661

VIN

TSOT-23-6

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

TDFN3X3-10

4

G9661

1

2

3

8

7

6

NC

VIN

5

9

10

ADJ

TDFN3X3-10

4

1

2

3

8

7

6

VO

NC

VO

VPP

VIN

5

9

10

POK

VEN

Thermal

Pad*

(GND)