11

Rev. 3/6/03

SPX2950/SPX2951 150mA Low Dropout Voltage Regulator

©Copyright 2003 Sipex Corporation

SPX2951

1

2

8

5

3

46

7

100kΩ

100kΩ

100kΩ

20kΩ

10kΩ

1kΩ

100kΩ

39kΩ

1%

1%

1%

1%

<6.2V**

<6.0V**

<5.8V**

1µF

+

39kΩ

1kΩ

6V

LEAD-

ACID

BATTERY

-

-

+

+

C3

C2

-

+

C1

-

+

C4

RESET

ERROR

SD

GND

TAP

FB

SENSE

* OPTIONAL LATCH OFF WHEN DROPOUT OCCURS.

* OUTPUTS GO LOW WHEN VIN DROPS BELOW DESIGNATED THRESHOLDS

Figure 6. Regulator with State-of Charge Indicator

EXTERNAL CIRCUIT

PROTECTED FROM

OVER TEMPERATURE

(V+ GOES OFF WHEN

TEMP > 125)

OR

RELAY

8.2K

TEMP

SENSOR

GND

FB

SD

+V

IN

10K

5 DEGREE SHUTDOWN FLAG

ERROR

_______

3

5

8

4

7

1

AUX SHUTDOW

INPUT

OFF

ON

Ω

AS35

+

-

SPX2951

.

Figure 7. System Over Temperature Protection

TYPICAL APPLICATIONS: (Continued)