Package Lead Description
LEAD SYMBOL
PACKAGE LEAD #
FUNCTION
TO-220
1
2
3
4
VIN
VOUT1
Supply voltage to IC, usually direct from battery.
Regulated output voltage 5V, 500mA (typ) switched.
Ground connection.
Gnd
RESET
goes low whenever
RESET/ENABLE
CMOS compatible output lead,
VOUT1 becomes unregulated. To use the ENABLE option, con-
nect the lead via a resistor to VIN (see app. notes).
5
VOUT2
STANDBY output 5V, 10mA typ, always on.
Typical Performance Characteristics
7
6
5
4
3
2
1
0
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
R =500W
L
-1
-2
-40
-20
0
20
40
60
0
200
400
600
800
INPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
Dropout Voltage vs. Output Current
Standby Output Voltage vs. Input Voltage
20
10
1.0
0.9
0.8
IOUT =500mA
1
0
-10
-20
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
3
2
1
0
0
10
20
30
40
50
60
0
5
10
15
20
TIME (ms)
OUTPUT CURRENT (mA)
Standby Dropout Voltage vs. Output Current
Line Transient Response (VOUT1)
7
10
5
R =10W
L
6
5
4
3
2
1
0
0
-5
-10
3
2
1
-1
-2
0
-40
-20
0
20
40
60
0
10
20
30
40
50
60
INPUT VOLTAGE (V)
TIME (ms)
Output Voltage vs. Input Voltage
Line Transient Response (VOUT2
)
3
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
