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Gamma Microelectronics
Gamma Microelectronics

GM66301 Datasheet Preview

GM66301 Datasheet

3A ULTRA LOW-DROPOUT REGULATOR

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GM66301 pdf
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Description
The GM66300 series is 3.0A low-dropout linear voltage reg-
ulators that provide a low-voltage, and high-current output
with a minimum of external components.
The GM66300 series offers extremely low dropout
(typically 400mV at 3.0A) and low ground current (typically
36mA at 3.0A).
The GM66300 series is ideal for PC add-in cards that need
to convert from standard 3.0V to 2.5V and 2.5V to 1.8,
down to new, lower core voltages. A guaranteed maximum
dropout voltage of 500mV over all operating conditions
allows the GM66300 series to provide 2.5V from a supply
as low as 3V or 1.8V . The GM66300 series also has fast
transient response, for heavy switching applications. The
device requires only 47µF of output capacitance to
maintain stability and achieve fast transient response.
The GM66300 series is fully protected with overcurrent
limiting, thermal shutdown, reversed-battery protection,
reversed-lead insertion protection, and reversed-leakage
protection.
The GM66301 series offers a TTL-logic-compatible enable
pin, and an error flag that indicates undervoltage and
overcurrent conditions. Offered in a fixed voltages, 1.8V
and 2.5V, the GM66300 series comes in the TO-220 and
TO-263 packages, and is an ideal upgrade to older, NPN-
based linear voltage regulators.
The GM66030 is adjustable version.
Features
3.0A minimum guaranteed output current
500mV dropout voltage
Ideal for 3.0V to 2.5V conversion
Ideal for 2.5V to 1.8V conversion
1% initial accuracy
Low ground current
Current limiting and Thermal shutdown
Reversed-battery protection
Reversed-leakage protection
Fast transient response
TO-220 and TO-263 packages
TTL/CMOS compatible enable pin (GM66301 only)
Error flag output (GM66301 only)
Adjustable version (GM66302 only)
Application
LDO linear regulator for PC add-in cards
High-efficiency linear power supplies
SMPS post regulator
Multimedia and PC processor supplies
Low-voltage microcontrollers
Strong ARMTM processor supply
TYPICAL APPLICATION CIRCUITS
VIN
3.3V
VIN VOUT
GM66300 - 2.5
GND
VOUT
2.5V
+ 47µF
ENABLE
SHUTDOWN
VIN
3.3V
100kW
GM66301 - 2.5
VEN
FLG
VIN VOUT
GND
ERROR FLAG
OUTPUT
+ 47µF
VOUT
2.5V
ENABLE
SHUTDOWN
VIN
3.3V
GM66302
VEN
OUT
VIN GND Adj
10µF
1.25V
+ 47µF
www.gammamicro.com 1



Gamma Microelectronics
Gamma Microelectronics

GM66301 Datasheet Preview

GM66301 Datasheet

3A ULTRA LOW-DROPOUT REGULATOR

No Preview Available !

GM66301 pdf
MARKING INFORMATION & PIN CONFIGURATIONS
2
TO-263-2 (D PAK)
TO-220
TO-220- 5
TO-263-5(D2PAK)
GM66300
VVAYWW
GM66300
VVAYWW
GM66301
VVAYWW
GM66301
VVAYWW
TO-220- 5
GM66302
AYWW
VIN VOUT
GND
VIN
2
TO-263-5(D PAK)
GND VOUT
GM66302
AYWW
EN Adj
VIN GND VOUT
VV
A
Y
WW
EN FLG
VIN GND VOUT
EN FLG
VIN GND VOUT
EN Adj
VIN GND VOUT
= Output Voltage
(18=1.8V , 25=2.5V)
= Assembly Location
= Year
= Weekly
Pinout On all devices, the Tab is grounded.
GM66300/ Three Terminal
Pin 1 = Input, 2 = Ground, 3 = Output
GM66301/ Five Terminal (Fixed Voltage Devices)
Pin 1 = Enable, 2 = Input, 3 = Ground,
4 = Output, 5 = Flag
GM66302/ Adjustable with ON/ OFF Control
Pin 1 = Enable, 2 = Input, 3 = Ground,
4 = Output, 5 = Adjust
ORDERING INFORMATION
Ordering Number
GM66300
GM66300-1.8TA3T
GM66300-1.8TA3R
GM66300-1.8TB3T
GM66300-2.5TA3T
GM66300-2.5TA3R
GM66300-2.5TB3T
GM66301
GM66301-1.8TA5T
GM66301-1.8TA5R
GM66301-1.8TB5T
GM66301-2.5TA5T
GM66301-2.5TA5R
GM66301-2.5TB5T
GM66302
GM66302TA5T
GM66302TA5R
GM66302TB5T
Output Voltage
1.8V
1.8V
1.8V
2.5V
2.5V
2.5V
1.8V
1.8V
1.8V
2.5V
2.5V
2.5V
Adj
Adj
Adj
* For detail Ordering Number identification, please see last page.
Package
TO-263-2
TO-263-2
TO-220
TO-263-2
TO-263-2
TO-220
TO-263-5
TO-263-5
TO-220-5
TO-263-5
TO-263-5
TO-220-5
TO-263-5
TO-263-5
TO-220-5
Shipping
50 Units/ Tube
800 Units/ Tape & Reel
50 Units/ Tube
50 Units/ Tube
800 Units/ Tape & Reel
50 Units/ Tube
50 Units/ Tube
800 Units/ Tape & Reel
50 Units/ Tube
50 Units/ Tube
800 Units/ Tape & Reel
50 Units/ Tube
50 Units/ Tube
800 Units/ Tape & Reel
50 Units/ Tube
2


Part Number GM66301
Description 3A ULTRA LOW-DROPOUT REGULATOR
Maker Gamma Microelectronics
Total Page 11 Pages
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