MAX16016_0812 Datasheet, PDF (5/21 Pages) Maxim Integrated Products – Low-Power μP Supervisory Circuits with Battery-Backup Circuit and Chip-Enable Gating

Low-Power µP Supervisory Circuits with
Battery-Backup Circuit and Chip-Enable Gating
ELECTRICAL CHARACTERISTICS (continued)
(V_CC = 1.53V to 5.5V, V_BATT = 3V, T_A = -40°C to +85°C, unless otherwise noted. Typical values are at T_A = +25°C.) (Note 2)
PARAMETER
LOW LINE (LL)
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
Low Line to Reset Threshold
Voltage
V_CC falling
V_CC Falling to LL Delay
LL Output Low Voltage
LL Output High Voltage (Push-
Pull Output)
V_CC falling at 10V/ms
V_OL
V_CC ≥ 1.6V, I_SINK = 1mA, LL asserted
V_CC ≥ 1.2V, I_SINK = 100µA, LL asserted
V_OH
V_CC = 0.9 x V_{TH_LL}, I_SOURCE = 100µA,
LL deasserted
Output Leakage Current
V_LL = 5.5V, LL deasserted
BATTERY-OK INDICATOR (BATTOK, BATT_TEST)
BATTOK Threshold
Inferred internally from BATT
BATTOK Output Voltage Low
V_OL
V_CC = 1.1 x V_TH, I_SINK = 1mA, reset
asserted
BATTOK Output High Voltage
V_OH
V_CC = 1.1 x V_TH, I_SOURCE = 100µA,
BATTOK asserted
(see Table 2)
mV
20
V_OUT -
0.3
µs
0.3
V
0.3
V
1
µA
2.508
2.6
2.673
V
0.3
V
V_OUT -
0.3
V
BATTOK Output Leakage
Current
V_BATTOK = 5.5V, deasserted
1
µA
BATT_TEST Output Low Voltage
V_CC = 1.1 x V_TH, I_SINK = 1mA
0.3
V
Note 2: All devices are 100% production tested at T_A = +25°C and T_A = +85°C. Limits to -40°C are guaranteed by design.
Note 3: V_BATT can be 0V anytime, or V_CC can go down to 0V if V_BATT is active (except at startup).
Note 4: Use external current-limit resistor to limit current to 20mA (max).
Note 5: CEIN/CEOUT resistance is tested with V_CC = 5V and V_CEIN = 0V or 5V.
Note 6: WDI is internally serviced within the watchdog period if WDI is left unconnected.
Note 7: The WDI input current is specified as the average input current when the WDI input is driven high or low. The WDI input is
designed for a three-stated output device with a 10µA maximum leakage current and capable of driving a maximum capaci-
tive load of 200pF. The three-state device must be able to source and sink at least 200µA when active.
Table 1a. Reset Threshold Ranges
(MAX16016)
SUFFIX
L
M
T
S
R
Z
Y
W
V
RESET THRESHOLD RANGES (V)
MIN
TYP
MAX
4.508
4.63
4.906
4.264
4.38
4.635
2.991
3.08
3.239
2.845
2.93
3.080
2.549
2.63
2.755
2.243
2.32
2.425
2.117
2.19
2.288
1.603
1.67
1.733
1.514
1.575
1.639
Table 1b. Reset Threshold Ranges
(MAX16020/MAX16021)
SUFFIX
L
M
T
S
R
Z
Y
W
V
RESET THRESHOLD RANGES (V)
MIN
TYP
MAX
4.520
4.684
4.852
4.275
4.428
4.585
3.010
3.100
3.190
2.862
2.946
3.034
2.568
2.640
2.716
2.260
2.323
2.390
2.133
2.192
2.255
1.616
1.661
1.710
1.528
1.571
1.618
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