Fixed-Mode Regulator
Description
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ISSUED DATE :2003/08/02 REVISED DATE :2007/01/12E
G L 111 7 A
Description
1A Low Dropout Positive Adjustable or Fixed-Mode Regulator
The GL1117A is a low dropout at positive adjustable or fixed-mode regulator with minimum of 1A output current capability.
The product is specifically designed to provide well-regulated supply for low voltage IC applications such as high-speed bus termination and low current 3.
3V logic supply.
GL1117A is also well suited for other applications such as VGA cards.
GL1117A is guaranteed to have lower than 1.
4V dropout at full load current making it ideal to provide well-regulated outputs of 1.
25 to 5.
0 with 6.
4V to 15V input supply.
Features
1.
4Vmaximum dropout full load current Fast transient response Output current limiting Built-in thermal shutdown Good noise rejection 3-Terminal Adjustable or Fixed 1.
5V,1.
8V,2.
5V,3.
3V,5.
0V
Applications
PC peripheral Communication
Package Dimensions SOT-223
REF.
A C D E I H
Millimeter Min.
Max.
6.
70 7.
30 2.
90 3.
10 0.
02 0.
10 0° 10° 0.
60 0.
80 0.
25 0.
35
REF.
B J 1 2 3 4 5
Millimeter Min.
Max.
13° TYP.
2.
30 REF.
6.
30 6.
70 6.
30 6.
70 3.
30 3.
70 3.
30 3.
70 1.
40 1.
80
Typical Circuit
1/4
ISSUED DATE :2003/08/02 REVISED DATE :2007/01/12E
Block Diagram
Pin Descriptions
Name
Adj (GND) Vout Vin O I
I/O
Pin#
1 2 3
Function
A resistor divider from this pin to the Vout pin and ground sets the output voltage (Ground only for fixed mode) The output of the regulator.
A minimum of 10uF capacitor must be connected from this pin to ground to insure stability.
The input pin of regulator.
Typically a large storage capacitor is connected from this pin to ground to insure that the input voltage does not sag below the minimum dropout voltage during the load transient response.
This pin must always be 1.
3V higher than Vout in order for the device to regulate properly.
Absolute Maximum Ratings
Symbol Vin PD TST TOP TMJ DC Supply Voltage Power Dissipation Storage Temperature Operating Junction Te...
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