TYPICAL APPLICATIONS: (Continued)
39kΩ
RESET
-
C4
+
39kΩ
82
5
+VIN
ERROR
SENSE
VOUT
1
SPX2951
3 SD
GND
4
FB 7
TAP
6
+VOUT=5V
+
1µF
1% 100kΩ
6V
1%
LEAD-
ACID
BATTERY
1%
1kΩ
1kΩ
R1 10kΩ
1% 20kΩ
-
100kΩ
C1
+
-
100kΩ
C2
+
-
100kΩ
C3
+
<5.8V**
<6.0V**
<6.2V**
* OPTIONAL LATCH OFF WHEN DROPOUT OCCURS.
ADJUST R3 FOR C2 SWITCHING WHEN VIN IA 6.0V
* OUTPUTS GO LOW WHEN VIN DROPS BELOW DESIGNATED THRESHOLDS
Figure 6. Regulator with State-of Charge Indicator
+V IN
AUX SHUTDOW
INPUT
OFF
ON
3 SD
8
+V IN _______ 5
ERROR
SPX2951
1
V OUT
10K Ω.
5 DEGR.EE SHUTDOWN FLAG
GND
+
4
TEMP
SENSOR
AS35
-
FB
7
8.2K Ω
EXTERNAL CIRCUIT
PROTECTED FROM
OVER TEMPERATURE
(V+ GOES OFF WHEN
TEMP > 125)
OR
RELAY
Figure 7. System Over Temperature Protection
Rev. 3/6/03
SPX2950/SPX2951 150mA Low Dropout Voltage Regulator
11
©Copyright 2003 Sipex Corporation