Rainbow Electronics DS2710 - Manual (Page 3)

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