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