The GS1117 is a low dropout three terminal regulator with
800mA output current capability. The output voltage is
adjustable with the use of a resistor divider. For fixed out-
put voltage versions, the output voltage is internally set at
2.5V, 2.85V, 3.3V or 5V. Dropout is guaranteed at a maxi-
mum of 1.4V at maximum output current. Its low dropout
voltage and fast transient response make it ideal for low
voltage microprocessor applications. Internal thermal limiting
provides protection against any overload condition that
would create excessive junction temperatures.
Features
• Dropout Voltage 1.2V at 800mA Output Current
• Fast Transient Response
• Line Regulation typically at 0.015%
• Load Regulation typically at 0.1%
• Internal thermal limiting
• Adjustable Output Voltage or Fixed 2.5V, 2.85V, 3.3V, 5V
• Standard 3-Pin Power Packages
Applications
• SCSI-2 Active Terminator
• Post Regulator for Switching Supply
• Battery Chargers
• Constant-Current Regulators
• PC Add-On Card
Functional Block Diagram
V
IN
Current
Amp
Mechanical Data
Case:
TO-220AB, TO-263AB (D
2
PAK),
TO-252 (DPAK) and SOT-223
High temperature soldering guaranteed:
260°C/10 seconds at terminals
V
REF
1.25V
55µA
+
+
GM
--
Thermal
Limit
Current
Limit
V
OUT
For
fixed
voltage
device
ADJ
GND
Case outlines are on the back page
Document Number 74802
20-Feb-02
www.vishay.com
1
GS1117
Vishay Semiconductors
formerly General Semiconductor
Maximum Ratings and Thermal Characteristics
Parameter
Vin Pin to ADJ/GND Pin
Thermal Resistance – Junction to Case
TO-220AB
TO-252
TO-263AB
SOT-223
Operating Junction Temperature Range
Storage Temperature Range
(T
A
= 25°C unless otherwise noted)
Symbol
Vin
Value
7
3.0
8.0
3.0
15.0
0 to +125
–65 to 150
Unit
V
R
θJC
°C/W
T
J
T
stg
(2)
°C
°C
Electrical Characteristics
(1)
Parameter
Reference Voltage
T
J
= 25°C
, V
IN
= 5V, I
o
= 10mA unless otherwise noted.
Symbol
V
REF
Test Conditions
T
J
= 25°C
0°C
≤
T
J
≤
125°C
2.65V
≤
V
IN
≤
7V
10mA
≤
I
o
≤
800mA
GS1117-2.5, V
IN
= 5V
GS1117-2.85, V
IN
= 5V
GS1117-3.3, V
IN
= 5V
GS1117-5, V
IN
= 7V
GS1117
0°C
≤
T
J
≤
125°C
2.65V
≤
V
IN
≤
7V
10mA
≤
I
o
≤
800mA
2.65V
≤
V
IN
≤
7V
T
J
= 25°C
0°C
≤
T
J
≤
125°C
10mA
≤
I
o
≤
800mA
T
J
= 25°C
0°C
≤
T
J
≤
125°C
0°C
≤
T
J
≤
125°C
I
o
= 800mA
I
o
= 500mA
I
o
= 100mA
Min
1.238
1.225
Typ
1.250
1.250
Max
1.262
1.275
Unit
V
V
Output Voltage
V
OUT
2.48
2.82
3.26
4.95
0.98V
N
2.5
2.85
3.30
5.00
V
N
2.53
2.88
3.33
5.05
1.02V
N
V
V
V
V
V
Line Regulation
REG
line
0.015
0.02
0.1
0.2
1.2
1.19
1.15
0.2
0.2
0.3
0.4
1.4
1.35
1.30
% V
O
% V
O
% V
O
% V
O
V
V
V
Load Regulation
REG
load
Dropout Voltage
V
DROP
Notes:
(1) All parameters, except nominal output voltage are specified for the variable voltage version, allowing a wider V
in
Range.
The specified limits also apply for the fixed voltage versions over the allowable input voltage range: GS1117-2.5 (3.9V -7.0V), GS1117-2.85 (4.25V - 7.0V),
I attended the C2000 event on Saturday, and it was shipped today. Really fast..............:Laugh: [[i] This post was last edited by zwj108 on 2012-12-4 09:34 [/i]]...
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