DS2726(2008) 데이터 시트보기 (PDF) - Maxim Integrated

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DS2726
(Rev.:2008)

5- to 10-Cell Li+ Protector with Cell Balancing

Maxim Integrated 

5- to 10-Cell Li+ Protector with Cell Balancing

ELECTRICAL CHARACTERISTICS: PROTECTION CIRCUIT (continued)

(TA = 0°C to +50°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX

Overvoltage Delay

tOVD

128 x

tDOCDMIN

128 x

tDOCDMAX

Undervoltage Delay

Discharge Overcurrent Delay

Short-Circuit Delay

Charger-Detect Threshold

(VPKP - VVIN)

Test Threshold

Test Current

tUVD

tDOCD

tSCD

VCDET

VTP

ITST

CDOCD = 100pF (Notes 7, 12)

CDOCD = 1000pF (Notes 7, 12)

CSCD = 100pF (Notes 7, 12)

CSCD = 1000pF (Notes 7, 12)

DOC conditions

DOC condition, VIN - VPKP = 2V

DOC condition, VIN - VPKP = 50V

128 x

tDOCDMIN

128 x

tDOCDMAX

2.56 3.20 3.84

25.6 32.0 38.4

45

58

72

405 508 612

3

17

0.8

1.2

1.7

68

120 200

0.5 1.20 1.8

Note 1: All voltages relative to GND.

Note 2: Voltages below this level cannot be monitored; therefore, CC and DC are off below this value.

Note 3: Full-gate drive is not achieved until the voltage source for the gate driver (VPKP or VVIN) is above 13V.

Note 4: With 10µF decoupling capacitor.

Note 5: ILOAD is the current load on the pin specified in the parameter.

Note 6: VCC cannot meet specification if VVIN is below this value.

Note 7: Capacitance tolerance introduces additional error.

Note 8: With ≥ 0.1µF decoupling capacitor.

Note 9: Current is an average. Spikes up to 200µA when measuring cell voltages.

Note 10: Current is an average. Spikes up to 15µA when measuring cell voltages.

Note 11: Current depends on the number of cells being balanced.

Note 12: Includes switching time and comparator delay with 25mV overdrive.

UNITS

ms

ms

ms

μs

mV

V

μA

mA

4 _______________________________________________________________________________________

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