參數(shù)資料
型號: MAX1874EVKIT
廠商: Maxim Integrated Products, Inc.
英文描述: MAX1874 Evaluation Kit
中文描述: MAX1874評估板
文件頁數(shù): 2/16頁
文件大小: 405K
代理商: MAX1874EVKIT
M
Dual-Input, USB/AC Adapter, 1-Cell
Li+ Charger with OVP and Thermal Regulation
2
_______________________________________________________________________________________
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
ELECTRICAL CHARACTERISTICS
(V
USB
= V
DC
= V
DCLV
= V
EN
= V
USEL
= 5V, V
BATT
= 4.2V, V
THRM
= V
REF
/ 2, Circuit of Figure 2,
T
A
= 0°C to +85°C
, unless otherwise
noted. Typical values are at T
A
= +25
°
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.
Continuous Power Dissipation (T
A
= +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
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
INPUT VOLTAGE RANGES AND INPUT CURRENT
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
DC = DCLV, Q2 input MOSFET not on circuit,
Figure 2
6.5
V
Maximum Input Voltage for Charging
6.0
6.2
2
4
6.5
4
6
6.00
500
6.50
750
3
300
100
V
V
EN
= 0V
V
EN
= 5V
DC Supply Current
mA
DCLV Operating Voltage Range
DCLV Shutdown Supply Current
USB Input Voltage Range
4.35
V
μA
V
μA
mA
μA
nA
nA
V
EN
= 0V
300
4.35
V
EN
= 0V
V
EN
= 5V, V
DC
= 0V
V
EN
= 5V, V
DC
= 5V
500
2
160
1
5
1
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
(Note 1)
100
4.1685
2.8
4.20
3
70
100
200
250
4.2315
3.2
V
V
BATT rising
mV
I
USB
= 100mA
I
USB
= 500mA
I
DCIN
= 800mA
I
REF
= 0 to 500μA, 4V < V
DC
or V
USB
< 6.5V;
does not affect BATT regulation accuracy
USB Charging Headroom
mV
DC Charging Headroom
mV
REF Voltage (Buffered Output)
2.94
3
3.06
V
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