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PDF GS1117A Data sheet ( Hoja de datos )
| Número de pieza | GS1117A | |
| Descripción | 1A Low Dropout Voltage Regulator | |
| Fabricantes | Globaltech | |
| Logotipo |  |
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1A Low Dropout Voltage Regulator
Product Description
The GS1117A is a low dropout three-terminal
regulator with 1A output current capability. In order
to obtain lower dropout voltage and fast transient
response , which is critical for low voltage
applications.
The GS1117A has been optimized. The device is
available in an adjustable version and fixed output
voltage of 1.2V, 1.5V, 1.8V, 2.5V, 3.3V and 5V.
Dropout voltage is guaranteed at a maximum of
1.3V at 1A.
Current limit is trimmed to ensure specified output
current and controlled short circuit current. On-chip
thermal limiting provides protection against any
combination of overload that would create
excessive junction temperatures.
The GS1117A is available in the three leads
SOT-89, SOT-223 and TO-252 surface mount
packages.
Features
Adjustable or Fixed Output
Current Limit and Thermal Protection
Output Current of 1A
1.3V Dropout Voltage
Line Regulation typically at 0.04% Max.
Load Regulation typically at 0.2% Max.
Applications
Battery-Power Circuitry
Post Regulator for Switching Power Supply
Low Voltage Logic Suppliers
Block Diagram
IN
+
-
GND
THERMAL
LIMIT
ADJ
OUT
For Fixed Voltage Device
www.gs-power.com 1
1 page  
Typical Performance Characteristics
Minimum Operating Current
(Adjustable Device)
12
9 TJ=125℃
TJ=25℃
6
3
Short-Circuit Current
1.25
1.00 TJ=125℃ TJ=25℃
0.75
0.50
0.25
0 5 10 15 20
Input/Output differential(V)
0 5 10 15
Input/Output Diffierential
Load Regulation
0.10
0.05 △ILOAD=1A
0
-0.05
-0.10
-0.15
-0.20-50 -25 0 25 50 75 100 125
Temperature(℃)
Ripple Rejection vs.Current
100
90 fRIPPLE=120Hz
80
70 VRIPPLE≦3VP-P
60
50 fRIPPLE=20Hz
40
30
VOUT=5V
CADJ=25μF
20 COUT=25μF
10
0
0
0.25 0.5
0.75 1.0
Output Current(A)
Typical Applications
Vin ≧4.75V
Cin
10uF
IN OUT
GS1117A
ADJ
Vref
1.25V
R1
133
EN IADJ
R2
232
Vout = 3.45V
Cout
10uF
Tant
VOUT=VREF (1+R2/R1)+IADJR2
Figure 1. Adjustable Voltage Regulator
Vin
Cin
10uF/Tantalum
IN OUT
GS1117A-xx
GND
IGND
Vout
Cout
10uF/Tantalum
Figure 2. Fixed Voltage Regulator
www.gs-power.com
5
5 Page 
NOTICE
Information furnished is believed to be accurate and reliable. However Globaltech Semiconductor assumes no
responsibility for the consequences of use of such information nor for any infringement of patents or other rights of
third parties, which may result from its use. No license is granted by implication or otherwise under any patent or
patent rights of Globaltech Semiconductor. Specifications mentioned in this publication are subject to change
without notice. This publication supersedes and replaces all information without express written approval of
Globaltech Semiconductor.
CONTACT US
GS Headquarter
4F.,No.43-1,Lane11,Sec.6,Minquan E.Rd Neihu District Taipei City 114, Taiwan (R.O.C)
886-2-2657-9980
886-2-2657-3630
Wu-Xi Branch
No.21 Changjiang Rd., WND, Wuxi, Jiangsu, China (INFO. &. TECH. Science Park Building A 210 Room)
86-510-85217051
86-510-85211238
RD Division
824 Bolton Drive Milpitas. CA. 95035
1-408-457-0587
Version_1.1
Notice
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet GS1117A.PDF ] | |
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