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GMT - Low Dropout Regulator

Numéro de référence G9661
Description Low Dropout Regulator
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G9661 fiche technique
Global Mixed-mode Technology
G9661
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
up to 2 amps. It operates with a VIN as low as 1.4V and
VPP voltage 5V with output voltage programmable as
low as 0.8V. The G9661 features ultra low dropout,
ideal for applications where VOUT is very close to VIN.
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
G9661-25ADJTP1U
961Ax
G9661-25ADJF11U
9661-25
G9661-25ADJF61U
9661-25
G9661-25ADJRE1U
9661A
Note:TP: TSOT-23-6 F1: SOP-8 (FD) F6: MSOP-10 (FD)
1:Bonding Code
U : Tape & Reel
e.g. 25 denotes the 2.5V output voltage
TEMP.
RANGE
-40°C~+85°C
-40°C~+85°C
-40°C~+85°C
-40°C~+85°C
RE: TDFN3X3-10
PACKAGE
(Green)
TSOT-23-6
SOP-8 (FD)
MSOP-10 (FD)
TDFN3X3-10
Pin Configuration
Typical Application Circuit
VO 1
G9661
GND 2
VIN 3
6 ADJ
5 VPP
4 VEN
POK 1
VEN 2
VIN 3
VPP 4
G9661
Thermal
Pad*
8 GND
7 ADJ
6 VO
5 NC
TSOT-23-6
SOP-8 (FD)
POK 1
VEN 2
NC 3
VIN 4
VPP 5
G9661
Thermal
Pad*
10 GND
9 ADJ
8 VO
7 VO
6 NC
NC 1
VO 2
VO 3
ADJ 4
POK 5
G9661
Thermal
Pad*
(GND)
10 VPP
9 NC
8 VIN
7 VIN
6 VEN
MSOP-10 (FD)
TDFN3X3-10
* Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.
VPP (5V)
VIN
VO
CPP C1 C2
1µF 10µF 10µF
R1
R2
G9661
VPP
VEN
VIN
VO
ADJ
POK
GND
10KΩ
VIN
0.8 (R1+R2)
VO =
R2
Volts
R2<120kΩ is recommended
Ver: 0.93
Sep 10, 2013
TEL: 886-3-5788833
http://www.gmt.com.tw
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