GMT G9661-25ADJF1, G9661-25ADJF6, G9661-25ADJRE, G9661-25ADJTP Schematic [ru]
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
Ordering Information
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
up to 2 amps. It operates with a V
VPP voltage 5V with output voltage programmable as
low as 0.8V. The G9661 features ultra low dropout,
ideal for applications where V
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.
IN
is very close to VIN.
OUT
G9661
as low as 1.4V and
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
G9661
NC
NC
VO
VO
VO
VO
1
1
2
2
3
3
4
4
SOP-8 (FD)
SOP-8 (FD)
1
1
1
1
2
2
2
2
3
3
3
3
4
4
4
4
5
5
5
5
TDFN3X3-10
TDFN3X3-10
TDFN3X3-10
TDFN3X3-10
G9661
Thermal
Thermal
Pad*
Pad*
G9661
G9661
Thermal
Thermal
Pad*
Pad*
(GND)
(GND)
GND
GND
8
8
ADJ
ADJ
7
7
6
6
VO
VO
VIN
NC
NC
5
5
10
10
10
10
VPP
VPP
NC
9
9
NC
9
9
8
8
8
8
VIN
VIN
VIN
VIN
7
7
7
7
6
6
6
6
VIN
VO
VO
C1
C
C1
C
PP
PP
1µF
1µF
10µF
10µF
10µF
10µF
0.8 (R1+R2)
0.8 (R1+R2)
VO =
VO =
R2<120kΩ is recommended
R2<120kΩ is recommended
Volts
Volts
R2
R2
R1
R1
C2
C2
R2
R2
G9661
G9661
VPPVPP (5V)
VPPVPP (5V)
VEN
VEN
VIN
VIN
VO
VO
ADJ
ADJ
POK
POK
GND
GND
10KΩ
10KΩ
G9661
VO
VO
GND
GND
VIN
VIN
POK
POK
VEN
VEN
NC
NC
VIN
VIN
VPP
VPP
* Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.
* Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.
G9661
1
1
2
2
3
3
TSOT-23-6
TSOT-23-6
G9661
G9661
1
1
2
2
Thermal
Thermal
3
3
Pad*
Pad*
4
4
5
5
MSOP-10 (FD)
MSOP-10 (FD)
POK
POK
ADJ
ADJ
6
6
VEN
5
5
4
4
10
10
VEN
VPP
VPP
VIN
VIN
VEN
VEN
VPP
VPP
GND
GND
9
9
ADJ
ADJ
VO
VO
8
8
7
7
VO
VO
ADJ
ADJ
POK VEN
6
6
POK VEN
NC
NC
VIN
VIN
Ver: 0.93
Sep 10, 2013
1
TEL: 886-3-5788833
http://www.gmt.com.tw
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