Rainbow-electronics DS1393 Manuale Utente Scaricare il pdf (Pagina 9)

DS1390/DS1391/DS1392/DS1393

Low-Voltage SPI/3-Wire RTCs with

Trickle Charger

_____________________________________________________________________ 9

Typical Operating Characteristics

= +3.3V, T

= +25°C, unless otherwise noted.)

BACKUP

vs. V

BACKUP

, BBSQ1 = 0

DS1390 TOC01

BACKUP

(V)

SUPPLY CURRENT (nA)

4.5 4.94.13.3 3.72.92.52.11.7

350

400

450

500

550

600

300

1.3 5.3

= 0

BACKUP

vs. V

BACKUP

, BBSQ1 = 1

DS1390 toc02

BACKUP

(V)

SUPPLY CURRENT (nA)

5.34.94.1 4.52.1 2.5 2.9 3.3 3.71.7

350

400

450

500

550

600

650

700

750

800

850

900

950

1000

300

1.3

= 0V

BACKUP

vs. TEMPERATURE

BACKUP

= 3.0V

DS1390 toc03

TEMPERATURE (°C)

SUPPLY CURRENT (nA)

806040200-20

300

400

350

450

500

550

600

250

-40

= 0V

OSCILLATOR FREQUENCY

vs. SUPPLY VOLTAGE

DS1390 toc04

SUPPLY (V)

FREQUENCY (Hz)

5.34.84.33.83.32.82.31.8

32767.85

32767.90

32767.95

32768.00

32767.80

1.3

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 23 24

DS1390/DS1391/DS1392/DS1393 1
Trickle Charger 1

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Rainbow-electronics DS1393 Manuale Utente Pagina 9

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