Rainbow-electronics DS2710 Manual de usuario descargar pdf (Pagina 3)

DS2710

Single-Cell NiMH Charger

_______________________________________________________________________________________ 3

Note 1: Voltages relative to V

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.

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

. Their ranges never overlap.

Note 9: Maximum allowable leakage on TMR to maintain SUSPEND state.

DC ELECTRICAL CHARACTERISTICS (continued)

(4.0V ≤ V

≤ 5.5V, T

= -20°C to +70°C, unless otherwise noted.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Cold Temperature Detect

Threshold

THM-MIN

(Notes 1, 5, 8) 0.73 V

Hot Temperature No-Start

Threshold

THM-MAX

(Notes 1, 5, 8) 0.30 0.33 0.36 V

Hot Temperature Safety

Shutdown Threshold

THM-STOP

(Notes 1, 5, 8) 0.29 V

SUSPEND Current Threshold I

SUSPEND

(Note 9) 0.1 0.5 μA

Presence-Test Current, VP1 V

 4.0V 1.0 10 15 μA

Reverse-Leakage Current, VP1 V

= 0V, V

= 1.5V 2 μA

Impedance-Voltage Test Range V

CTEST

32 400 mV

ELECTRICAL CHARACTERISTICS: TIMING

(4.0V ≤ V

≤ 5.5V, T

= -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

CELL

< V

LOW

34 Minutes

FAST-CHARGE Termination

Hold-Off Period

THO

4 Minutes

FAST-CHARGE Flat Voltage

Timeout

FLAT

CELL

not increasing 16 Minutes

Charge-Timer Period t

CTMR

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

1 2 3 4 5 6 7 8 ... 11 12

Single-Cell NiMH Charger 1

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Rainbow-electronics DS2710 Manual de usuario Pagina 3

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