Single-Cell NiMH Charger
DS2710
DC ELECTRICAL CHARACTERISTICS (continued)
(4.0V ≤ V
≤ 5.5V, T = -20°C to +70°C, unless otherwise noted.)
A
DD
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Cold Temperature Detect
Threshold
V
(Notes 1, 5, 8)
(Notes 1, 5, 8)
0.73
V
V
V
THM-MIN
DD
DD
DD
Hot Temperature No-Start
Threshold
V
0.30
0.33
0.29
0.36
THM-MAX
Hot Temperature Safety
Shutdown Threshold
V
(Notes 1, 5, 8)
(Note 9)
THM-STOP
SUSPEND Current Threshold
Presence-Test Current, VP1
Reverse-Leakage Current, VP1
Impedance-Voltage Test Range
I
0.1
10
0.5
15
μA
SUSPEND
V
DD
V
DD
ꢀ 4.0V
1.0
32
μA
μA
mV
= 0V, V = 1.5V
2
P1
V
400
CTEST
ELECTRICAL CHARACTERISTICS: TIMING
(4.0V ≤ V
≤ 5.5V, T = -20°C to +70°C, unless otherwise noted.)
A
DD
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Seconds
%
Internal Time-Base Period
t
0.96
BASE
Internal Time-Base Accuracy
-10
+10
DF1
DF2
DF3
CTST
FAST-CHARGE
96.9
25.0
1.56
31
CS Output Duty Factor
%
PRECHARGE/TOP-OFF
MAINTENANCE
CELL TEST Interval
t
Seconds
Minutes
PRECHARGE Timeout
t
V
CELL
< V
LOW
34
PCHG
FAST-CHARGE Termination
Hold-Off Period
t
4
Minutes
Minutes
THO
FAST-CHARGE Flat Voltage
Timeout
t
V
CELL
not increasing
16
FLAT
Charge-Timer Period
t
R
R
= 40kꢀ
= 40kꢀ
1.0
Hours
%
CTMR
TMR
Charge-Timer Accuracy
Charge-Timer Range
Toggle Rate, Charging
Toggle Rate, FAULT State
-6
+6
TMR
t
0.5
5.0
Hours
Hz
CTMR-RANGE
f
1
4
CHARGE
f
Hz
FAULT
Note 1: Voltages relative to V
.
SS
Note 2: Specification does not include CS and STATUS pin currents.
Note 3: STATUS pin is active high.
Note 4: Specification is guaranteed by design.
Note 5: Specification applicable during charge cycle with T = 0°C to +70°C.
A
Note 6: 50mV overdrive while connected to a pMOS transistor (such as ZXM62P02 from Zetex).
Note 7: V
and V
ranges never overlap.
BAT-MAX1
BAT-MAX1
Note 8: VT
, V
, and V
are fixed ratios of V . Their ranges never overlap.
THM-STOP DD
HM-MIN THM-MAX
Note 9: Maximum allowable leakage on TMR to maintain SUSPEND state.
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3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
