MAX1874ETE(2003) データシートの表示（PDF） - Maxim Integrated

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MAX1874ETE
(Rev.:2003)

Dual-Input, USB/AC Adapter, 1-Cell Li+ Charger with OVP and Thermal Regulation

Maxim Integrated 

Dual-Input, USB/AC Adapter, 1-Cell

Li+ Charger with OVP and Thermal Regulation

ELECTRICAL CHARACTERISTICS (continued)

(VUSB = VDC = VDCLV = VEN = VUSEL = 5V, VBATT = 4.2V, VTHRM = VREF / 2, Circuit of Figure 2, TA = 0°C to +85°C, unless otherwise

noted. Typical values are at TA = +25°C.)

PARAMETER

CONDITIONS

BATTERY CHARGING AND PRECHARGE CURRENT

DCI Voltage Range

DCI Voltage to BATT Current

USB Charging Current

VDCI = VREF

VDCI = VREF / 2

USEL = high

USEL = low

Soft-Start Current-Ramp Time

Measured from 10% to 90%

Prequal Charging Current

BATT Input Current

BATT Shutdown Current

VBATT = 2.5V

No DC or USB power, VBATT = 4.2V

EN = GND, USB- and/or DC-powered

THERMISTOR MONITOR AND DIE-TEMPERATURE REGULATION

THRM COLD Trip Level

(Note 2)

THRM HOT Trip Level

THRM Disable Threshold

(Note 2)

Internal Die Thermal Limit

LOGIC INPUT/OUTPUTS AND GATE DRIVERS

PON High Output Resistance

PON Low Output Resistance

DCOK Low Output Resistance

DCOK Off-Leakage Current

UOK Output Resistance

UOK Off-Leakage Current

PON pulled up to active input (DCLV or USB),

VDCLV or VUSB = 5V

PON resistance to GND, VDCLV = VUSB = 0

DCOK pulled low

V DCOK = 12V, VDC = 0V

UOK resistance to GND, VDC = 0

V UOK = 6.5V

DC input (% of charge current set at DCI)

CHG Threshold to Indicate Battery Full,

Battery Current Falling (Note 3)

USB input, USEL = 5V (% of USB charging current)

USB input with USEL = 0

CHG Logic-Low Output

CHG Leakage Current

EN, USEL Logic-Input High Level

EN, USEL Logic-Input Low Level

EN, USEL Input Bias Current

Sinking 10mA sink

V CHG = 6.5V

MIN TYP MAX UNITS

0.1 x VREF

VREF

V

950 1000 1050

mA

490 520 550

455 495

mA

82

95

7

ms

35

55

70

mA

5

7.5

µA

1

2

µA

0.72 0.74

0.28 0.29

50

100

+105

0.76

0.30

150

VREF

VREF

mV

°C

25

Ω

120

kΩ

25

Ω

1

µA

25

Ω

1

µA

8

12.5

19

20

25

30

%

Voltage

mode

0.4

V

1

µA

1.6

V

0.4

V

1

µA

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