TYPICAL APPLICATIONS: (Continued)
+V IN
470KΩ
8
5 ______
+V IN
ERROR
470kΩ
1
V OUT
SPX2951
3
SD
R1
RESET
GND
FB
4
7
V OUT
+
1µF
R2
Figure 3. Latch Off When Error Flag Occurs
+V IN
ERROR
OUTPUT
SHUTDOWN
INPUT
8
5 ______
+V IN
ERROR
1
V OUT
SPX2951
3
SD
GND
FB
4
7
*V OUT = V IN
*MINIMUM INPUT-OUTPUT VOLTAGE RANGES FROM 40mV to 400mV.
DEPENDING ON LOAD CURRENT.
Figure 4. Wide Input Voltage Range Current Limiter
+ 6V
SEALED
LEAD-
120kΩ
1.5kΩ
ACID
BATTERY
SOURCE FB
SPX385
1N457
FOR 5.5 V
400kΩ
100kΩ
3
SD
8
+V IN
1
V OUT
SPX2951
SENSE
2
GND
4
MAIN V+
+
1µF
MEMORY V+
20kΩ
NI-CAD
BACKUP
BATTERY
Figure 5.Low Battery Disconnect
Rev. 3/6/03
SPX2950/SPX2951 150mA Low Dropout Voltage Regulator
10
©Copyright 2003 Sipex Corporation