74802 데이터 시트보기 (PDF) - Vishay Semiconductors
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74802 Datasheet PDF : 6 Pages
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GS1117
Vishay Semiconductors
formerly General Semiconductor
Electrical Characteristics(1) TJ = 25°C (2), VIN = 5V, Io = 10mA unless otherwise noted.
Parameter
Symbol
Test Conditions
Output Current
Io
0°C ≤ TJ ≤ 125°C
Adjust Pin Current
2.65 ≤ Vin ≤ 7V
Iadj
10mA ≤ Io ≤ 800mA
0°C ≤ TJ ≤ 125°C
Adjust Pin Current Change
∆Iadj
2.65 ≤ Vin ≤ 7V
10mA ≤ Io ≤ 800mA
0°C ≤ TJ ≤ 125°C
Temperature Stability
TS
Io = 0.5A
0°C ≤ TJ ≤ 125°C
Minimum Load Current
Adjustable Version
ILMIN
0°C ≤ TJ ≤ 125°C
Quiescent Current
Fixed Voltage Version
IQ
0°C ≤ TJ ≤ 125°C
RMS Output Noise
N
10HZ ≤ f ≤ 10 kHZ
Ripple Rejection Ratio
RR
f = 120 HZ, CO = 25µF
Cadj = 25µF
Thermal Regulation
RTH
TA = 25°C, 30ms Pulse
Long Term Stability
TA = 125°C, 1000 Hrs
Min
0.85
60
Notes:
(1) All parameters, except nominal output voltage are specified for the variable voltage version, allowing a wider Vin Range.
The specified limits also apply for the fixed voltage versions.
(2) To maintain the specified junction temperatures, low duty cycle pulse testing is required for most parameters.
Typ
55
0.2
0.8
3
10
0.003
68
0.02
0.3
Max
120
5
10
14
0.05
Unit
A
µA
µA
%VO
mA
mA
%VO
dB
%/W
%VO
VIN
5V
C1
10µF
3 GS1117-2.5 2
GS1117-2.85
GS1117-3.3
GS1117-5
+
1
Typical Application Circuit
VOUT
+ C2
10µF
VIN
3
5V
C1 +
10µF
GS1117
1 ADJ
2
VREF
VOUT
3.3V
R1
125Ω
1% + C2
10µF
R2
205Ω
1%
Fixed Voltage Regulator
Adjustable Voltage Regulator
Notes:
VREF = VOUT – VADJ = 1.25V (typ.)
VOUT = VREF x (1+R2/R1) + IADJ x R2
IADJ = 55µA (typ.)
(1) C1 needed if device is far away from filter capacitors
(2) C2 required for stability
Document Number 74802
20-Feb-02
www.vishay.com
3
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