参数资料
型号: MAX8971EWP+T
厂商: Maxim Integrated Products
文件页数: 35/39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
Done Current, Timer, GSM Test Mode, and Battery Regulation Voltage
REGISTER
NAME
TOPOFF
I 2 C SLAVE
ADDRESS
0x6A
REGISTER
ADDRESS
0x08
ACCESS TYPE
R/W
SPECIAL
FEATURES
Protected with
CPROT[1:0]
RESET CONDITION
VSTBY INVALID or rising
edge of SFO_POK
BITS
B7
B6
B5
B4
B3
B2
B1
B0
NAME
NAME
TOFFT[2:0]
DESCRIPTION
IFST2p8
TOFFS[1:0]
CHGCV[1:0]
DEFAULT
Topoff
0x00 =
0x01 =
0x02 =
Timer Setting
0b000 = 0min
0b001 = 10min
0b010 = 20min
TOFFT[2:0]
0x03 =
0x04 =
0x05 =
0x06 =
0x07 =
0b011 = 30min
0b100 = 40min
0b101 = 50min
0b110 = 60min
0b111 = 70min
0b011
Scales Maximum Fast-Charge Current to 2.8A
IFST2P8
TOFFS[1:0]
CHGCV[1:0]
Maxim Integrated
This is used as a pulsed customer test mode and the part cannot run 2.8A
continuously.
Topoff Current Threshold
Topoff timer starts when ICHG reaches this current setting.
0x0 = 0b00 = 50mA
0x1 = 0b01 = 100mA
0x2 = 0b10 = 150mA
0x3 = 0b11 = 200mA
Charge Termination Voltage Setting
0x00 = 0b00 = 4.2V
0x01 = 0b01 = 4.10V
0x02 = 0b10 = 4.35V
0x03 = 0b11 = 4.15V
0b0
0b00
0b00
35
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