CS8127 Ver la hoja de datos (PDF) - Cherry semiconductor
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CS8127 Datasheet PDF : 6 Pages
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Package Lead Description
PACKAGE LEAD #
8L SO & PDIP
1
2
3
4
5
6
7
8
LEAD SYMBOL
FUNCTION
VIN
Sense
Delay
RESET
Ref Gnd
Pullup
Pwr Gnd
VOUT
Unregulated supply voltage to the IC.
Kelvin connection which allows remote sensing of output volt-
age for improved regulation.
Timing CAP for RESET function
CMOS/TTL compatible open collector output. RESET goes low
whenever VOUT drops below 6% of it's typical value.
Ground connection
Internal pullup transistor for VOUT. Also Sense pin for
overvoltage shutdown.
Ground connection
Supplies base current to PNP pass transistor or threshold volt-
age to FET pass transistor.
Typical Performance Characteristics (per Test Circuit)
Temperature Performance of VOUT
RESET Voltage vs. Output Current
Dropout Voltage vs. IOUT
5.02
5.01
5
IOUT=500mA
5.00V @ 25°C
4.99
4.98
4.97
4.96
4.95
-40 -20 0 20 40 60 80 100120 140150
JUNCTION TEMPERATURE (°C)
2000
1800
1600
1400
1200
1000
800
600
Vin = 5V
400
200
0
0
5 10 15 20 25 30 35 40
RESET OUTPUT CURRENT (mA)
400
25°C
350
300
ROUT = 47W
250
200
150
100
50
0
0
0.5 1.0 1.5 2.0 2.5 3.0
IOUT (Amps)
VOUT vs. VIN
5.50
5.00
4.50
4.00
3.50
IOUT=0.5A
IOUT= 3A
3.00
2.50
2.00
1.50
1.00
0.50
0.00
0 1 2 3 4 5 6 7 8 9 10
VIN (V)
Line Regulation vs. IOUT
20
25°C
6V£VIN £- 26V
15
10
5
0 0 0.5 1.0 1.5 2.0 2.5 3.0
IOUT(Amps)
IQ vs. VIN
100.00
90.00
80.00
70.00
IOUT = 3A
ROUT = 47W
60.00
50.00
40.00
30.00
20.00
10.00
IOUT = 0.5A
ROUT = 330W
0.00
0 1 2 3 4 5 6 7 8 9 10
VIN (V)
Load Regulation vs. IOUT
20
25°C
18
VIN=14V
16
14
12
10
8
6
4
2
0
0
0.5
1.0
1.5
2.0
2.5
3.0
IOUT(Amps)
IQ vs. IOUT
40
25°C
35
30
25
20
15
10
5
0
0
0.5
VIN=14V
1.0
1.5 2.0
2.5
3.0
IOUT (Amps)
Ripple Rejection
80
70
60
50
40
30
20
10
0
10 100
25°C
IOUT=250mA
1K 10K 100K 1M 10M 100M
FREQUENCY (Hz)
3
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