DS2784 Datasheet, PDF (3/38 Pages) Maxim Integrated Products – 1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication

DS2784: 1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication
PARAMETER
DQ, PIO Voltage Range
SYMBOL
CONDITIONS
MIN TYP
-0.3
MAX
+5.5
UNITS
V
DQ, PIO Input-Logic High
DQ, PIO Input-Logic Low
DQ, PIO Output-Logic Low
DQ, PIO Pullup Current
DQ, PIO Pulldown Current
DQ Input Capacitance
V_IH
V_IL
V_OL
IOL = 4mA
I_PU
Sleep mode,
V_PIN = V_DD - 0.4V
I_PD
Active mode,
V_PIN = 0.4V
C_DQ
1.5
V
0.6
V
0.4
V
0.2
μA
0.2
μA
50
pF
DQ Sleep Timeout
PIO, DQ Wake Debounce
SHA-1 COMPUTATION TIMING
t_SLEEP
t_WDB
DQ < V_IL
Sleep mode
2
9
s
100
ms
Computation Time
t_SHA
30
ms
ELECTRICAL CHARACTERISTICS: Protection Circuit
(V_DD = 2.5V to 4.6V, T_A = 0°C to +50°C, unless otherwise noted. Typical values are at T_A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
Overvoltage Detect
Charge-Enable Voltage
Undervoltage Detect
Overcurrent Detect: Charge
V_OV
V_CE
V_UV
V_COC
V_OV = 11000b
V_OV = 00011b
Relative to V_OV
OC = 11b
OC = 00b
4.457
4.252
-75
2.40
-57
-15.5
4.482
4.277
-100
2.45
-72
-23.5
4.507
4.302
-125
2.50
-87
-31.5
Overcurrent Detect: Discharge
V_DOC
OC = 11b
OC = 00b
76
96
116
23.5 35.5 47.5
Short-Circuit Current Detect
SC = 1b
V_SC
SC = 0b
240 300
360
120 150
180
Overvoltage Delay
t_OVD
(Note 6)
425
1150
Undervoltage Delay
Overcurrent Delay
Short-Circuit Delay
Test Threshold
Test Current
PLS Pulldown Current
Recovery Current
t_UVD
(Notes 6, 7)
84
680
t_OCD
8
10
12
t_SCD
80
120
160
V_TP
COC, DOC conditions
0.5
1.0
1.5
I_TST
SC, COC, DOC condition
10
20
40
I_PPD
Sleep mode
VUV condition,
max: V_PLS = 15V,
I_RC
V_DD = 1V
min: V_PLS = 4.2V,
V_DD = 2V
100 200
600
2.5
5.0
10.00
UNITS
V
mV
V
mV
mV
mV
mV
ms
ms
ms
μs
V
μA
μA
mA
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