DS12R885_07 Datasheet, PDF (8/23 Pages) Maxim Integrated Products – RTC with Constant-Voltage Trickle Charger

RTC with Constant-Voltage Trickle Charger
(V_CC = +3.3V, T_A = +25°C, unless otherwise noted.)
I_BACKUP vs. V_BACKUP
(DS12R885)
625
V_CC = 0V
600
575
550
2.0
2.3
2.5
2.8
3.0
V_BACKUP (V)
I_BACKUP vs. TEMPERATURE
(DS12R885)
650
V_CC = 0V,
625 V_BACKUP = 3.0V
600
575
550
525
500
475
450
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
Typical Operating Characteristics
V_BACKUP vs. V_CC vs. I_BACKUP
(DS12R885)
3.0
DS12R885 toc02
0μA
2.8
-15μA
-30μA
2.6
-45μA
2.4
-60μA
2.2
2.0
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
V_CC
32768.10
OSCILLATOR FREQUENCY
vs. SUPPLY VOLTAGE
32768.08
32768.06
32768.04
32768.02
32768.00
32767.98
32767.96
32767.94
32767.92
32767.90
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY (V)
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