LP2951CP Ver la hoja de datos (PDF) - Calogic, LLC

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LP2951CP

100mA Low Dropout Voltage Regulators

Calogic, LLC 

LP2950 / LP2951

CORPORATION

TYPICAL APPLICATIONS (continued)

+ 6V

SEALED

LEAD-

ACID

BATTERY

SOURCE

FOR 5.5V

120K Ω 1.5KΩ

FB

CLM385

IN457

400K Ω

100K Ω

3

SD

8

+VIN

1

VOUT

LP2951

SENSE

GND

4

LOW BATTERY DISCONNECT

MAIN V-

MEMORY V+

+

1µF

20K Ω

NI-CAD

BACKUP

BATTERY

1G-24

39kΩ

RESET

–

C4

+

39kΩ

8

+VIN

5

ERROR

2

SENSE

1

VOUT

LP2951

3

7

SD

GND

4

TAP

6

+VOUT = 5V

+

1µF

1% 100kΩ

–

100kΩ

C1

+

6V

LEAD-

ACID

1% 1kΩ

–

100kΩ

BATTERY

C2

+

1% 1kΩ

–

100kΩ

C3

+

10kΩ

R3

1% 20kΩ

<5.8V**

<6.0V**

<6.2V**

*OPTIONAL LATCH OFF WHEN DROPOUT OCCURS. ADJUST R3 FOR C2 SWITCHING WHEN VIN IS 6.0V.

**OUTPUTS GO LOW WHEN VIN DROPS BELOW DESIGNATED THRESHHOLDS.

REGULATOR WITH STATE-OF-CHARGE INDICATOR

1G-25

CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025

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