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ISSUED DATE :2005/06/06
REVISED DATE :2006/06/05C
GL1118
0.8A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Description
The GL1118 is a low dropout at positive adjustable or fixed-mode regulator with minimum of 0.8A 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. GL1118 is also well suited
for other applications such as VGA cards. GL1118 is guaranteed to have lower than 1.3V dropout at full load
current making it ideal to provide well regulated outputs of 1.25V to 5.0V with up to 12V 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
Typical Circuit
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
3.3V /0.8A
2.5V/0.8A
GL1118
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Block Diagram
ISSUED DATE :2005/06/06
REVISED DATE :2006/06/05C
Pin Descriptions
Name I/O Pin#
Adj (GND)
1
Vout
O2
Vin I 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 (0.15 ESR 20 )
must be connected from this pin to ground to insure stability.
The input pin of regulator. Typically a large storage capacitor (0.15 ESR 20 )
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
Parameter
VIN DC Supply Voltage
PD Power Dissipation
TST Storage Temperature
TOP
Operating Junction Temperature Range
Ratings
-0.3 to 12
Internally Limited
-65 ~ + 150
0 ~ + 150
Unit
V
GL1118
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ISSUED DATE :2005/06/06
REVISED DATE :2006/06/05C
Electrical Characteristics
Parameter
Reference Voltage
GL1118ADJ
GL1118-1.5
GL1118-1.8
Output Voltage
GL1118-2.5
GL1118-3.3
GL1118-5.0
Line Regulation
GL1118-XXX
GL1118ADJ
Load Regulation
GL1118-1.5
GL1118-1.8
GL1118-2.5
GL1118-3.3
GL1118-5.0
Dropout Voltage
(VIN-VOUT)
GL1118-XXX
Conditions
Io=10mA, TJ=25 , (VIN-VOUT)=1.5V
Io=10mA, TJ=25 , 3.0V VIN 12V
Io=10mA, TJ=25 , 3.3V VIN 12V
Io=10mA, TJ=25 , 4.0V VIN 12V
Io=10mA, TJ=25 , 4.8V VIN 12V
Io=10mA, TJ=25 , 6.5V VIN 12V
Io=10mA, VOUT+1.5V< VIN <12V, TJ=25
VIN=3.3V, Vadj=0, 0mA< Io <0.8A, TJ=25
(Note 1,2)
VIN=3.0V, 0mA< Io <0.8A, TJ=25 (Note 1,2)
VIN=3.3V, 0mA< Io <0.8A, TJ=25 (Note 1,2)
VIN=4.0V, 0mA< Io <0.8A, TJ=25 (Note 1,2)
VIN=5.0V, 0mA< Io <0.8A, TJ=25 (Note 1,2)
VIN=8.0V, 0mA< Io <0.8A, TJ=25 (Note 1,2)
Io=0.8A ( VOUT =0.1% VOUT)
Min Typ Max Unit
1.225 1.250 1.275 V
1.470 1.500 1.530 V
1.764 1.800 1.836 V
2.450 2.500 2.550 V
3.235 3.300 3.365 V
4.900 5.000 5.100 V
- - 0.2 %
- - 1%
- 12 15 mV
- 15 18 mV
- 20 25 mV
- 26 33 mV
- 40 50 mV
- 1.2 1.4 V
Current Limit
GL1118-XXX VIN-VOUT=5V
0.9 -
-A
Minimum Load Current Adjustable model Vin=5V
- 5 10 mA
Adjust Pin Current
Adjustable model Vin=12V, Io=10mA
- 50 100 uA
Quiescent Current
fixed model
Vin=12V, Io=0mA
- - 12 mA
Thermal Regulation
TA=25 ,30ms pulse
- 0.008 0.04 %/W
Ripple Rejection
F=120Hz, COUT=25uF Tantalum, IOUT=0.8A
GL1118-XXX VIN=VOUT+3V
- 60 70 dB
Temperature Stability IO=10mA
JA Thermal Resistance
Junction-to-Ambient(No
heat sink ;No air flow)
JC Thermal Resistance
Junction-to-Case
Control Circuitry/Power Transistor
- 0.5 - %
- 117 -
/W
- 15 - /W
Note 1: See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation
are measured at a constant junction temperature by low duty cycle pulse testing. Load regulation is measured at the
output lead =1/18” from the package.
Note 2: Line and load regulation are guaranteed up to the maximum power dissipation of 3W. Power dissipation is
determined by the difference between input and output and the output current. Guaranteed maximum power
dissipation will not be available over the full input/output range.
GL1118
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Characteristics Curve
ISSUED DATE :2005/06/06
REVISED DATE :2006/06/05C
I load=800mA
Important Notice:
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of GTM.
GTM reserves the right to make changes to its products without notice.
GTM semiconductor products are not warranted to be suitable for use in life-support Applications, or systems.
GTM assumes no liability for any consequence of customer product design, infringement of patents, or application assistance.
Head Office And Factory:
Taiwan: No. 17-1 Tatung Rd. Fu Kou Hsin-Chu Industrial Park, Hsin-Chu, Taiwan, R. O. C.
TEL : 886-3-597-7061 FAX : 886-3-597-9220, 597-0785
China: (201203) No.255, Jang-Jiang Tsai-Lueng RD. , Pu-Dung-Hsin District, Shang-Hai City, China
TEL : 86-21-5895-7671 ~ 4 FAX : 86-21-38950165
GL1118
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