MAX1874ETE(2003) データシートの表示（PDF） - Maxim Integrated
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MAX1874ETE
(Rev.:2003)
(Rev.:2003)
Maxim Integrated
MAX1874ETE Datasheet PDF : 16 Pages
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Dual-Input, USB/AC Adapter, 1-Cell
Li+ Charger with OVP and Thermal Regulation
ABSOLUTE MAXIMUM RATINGS
DC, DCOK to GND .................................................-0.3V to +20V
DCLV, BYP, USB, UOK, DCI, REF, USEL, THRM,
EN, BATT, CHG, PON to GND .............................-0.3V to +7V
PGND to GND .......................................................-0.3V to +0.3V
Continuous Current (DCLV) ..................................................1.1A
Continuous Current (USB) ....................................................0.6A
Continuous Power Dissipation (TA = +70°C)
16-Pin 5mm ✕ 5mm Thin QFN
(derate 21.3mW/°C above +70°C) ...................................1.7W
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Maximum Junction Temperature .....................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(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
INPUT VOLTAGE RANGES AND INPUT CURRENT
CONDITIONS
MIN TYP MAX UNITS
Maximum DC Input Voltage with
Overvoltage Protection
Q2 input MOSFET must be in place; charging
occurs only below 6.2V, Figures 3, 4, and 5
18
V
Maximum DC Input Voltage Without
Overvoltage Protection
Maximum Input Voltage for Charging
DC Supply Current
DCLV Operating Voltage Range
DCLV Shutdown Supply Current
USB Input Voltage Range
USB Supply Current
DCI Input Current
BYP Output Resistance
THRM Input Bias Current
BATTERY VOLTAGE
BATT Regulation Voltage
BATT Prequal Voltage Threshold
Prequal Threshold Hysteresis
USB Charging Headroom
DC Charging Headroom
REF Voltage (Buffered Output)
DC = DCLV, Q2 input MOSFET not on circuit,
Figure 2
VEN = 0V
VEN = 5V
VEN = 0V
VEN = 0V
VEN = 5V, VDC = 0V
VEN = 5V, VDC = 5V
(Note 1)
BATT rising
IUSB = 100mA
IUSB = 500mA
IDCIN = 800mA
IREF = 0 to 500µA, 4V < VDC or VUSB < 6.5V;
does not affect BATT regulation accuracy
6.5
V
6.0
6.2
6.5
V
2
4
mA
4
6
4.35
6.00
V
300
500
µA
4.35
6.50
V
500
750
µA
2
3
mA
160
300
µA
1
100
nA
5
Ω
1
100
nA
4.1685 4.20 4.2315
V
2.8
3
3.2
V
70
mV
100
mV
200
250
mV
2.94
3
3.06
V
2 _______________________________________________________________________________________
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