参数资料
型号: MAX8971EWP+T
厂商: Maxim Integrated Products
文件页数: 14/39页
文件大小: 0K
描述: IC DCDC CHRGR LI+ 1CELL 20WLP
标准包装: 2,500
功能: 充电管理,过压/欠压保护
电池化学: 锂离子(Li-Ion)、锂聚合物(Li-Pol)
电源电压: 4 V ~ 7.5 V
工作温度: -40°C ~ 85°C
安装类型: *
封装/外壳: *
供应商设备封装: *
包装: *
MAX8971
Industry's Smallest 1.55A
1-Cell Li+ DC-DC Charger
Bump Configuration
TOP VIEW
(BUMP SIDE DOWN)
MAX8971
1
2
3
4
5
A
B
C
D
+
PG1
A1
LX1
B1
BYP
C1
DC1
D1
PG2
A2
LX2
B2
BST
C2
DC2
D2
V ICHG
A3
IRQB
B3
GND
C3
PVL
D3
CS
A4
I2CIN
B4
SCL
C4
SFO
D4
BAT
A5
THM
B5
SDA
C5
AVL
D5
WLP
Bump Description
PIN
A1, A2
A3
A4
A5
B1, B2
B3
B4
B5
C1
C2
C3
Maxim Integrated
NAME
PG1, PG2
V ICHG
CS
BAT
LX1, LX2
IRQB
I2CIN
THM
BYP
BST
GND
FUNCTION
Power Ground for Step-Down Low-Side FET
Battery-Charging Current Monitor Output. This pin is an analog representation of the charger current
at 1.4mV/mA.
Current-Sense Input Power Pin
Battery Connection. Connect to a single-cell Li+ battery.
Buck Inductor Connection. Connect the inductor between LX_ and CS. The LX1 and LX2 pins must
be connected together externally.
Open-Drain Host Processor Interrupt Pin
I 2 C Interface Supply
Thermistor Input. Connect a negative temperature coefficient (NTC) thermistor from THM to GND.
Connect a resistor equal to the thermistor +25 ° C resistance from THM to AVL. Charging is
suspended when the thermistor is outside the hot and cold limits. Connect THM to GND to disable
the thermistor temperature sensor. If the thermistor function is disable through I 2 C, connect THM to
GND.
Connection Point Between Reverse Blocking MOSFET and High-Side Switching MOSFET. Bypass to
PG_ with a minimum 1 F F ceramic capacitor.
High-Side FET Driver Supply. Bypass BST to LX with a 0.1 F F ceramic capacitor.
Analog Ground. GND is the low-noise ground connection for the internal circuitry.
14
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