参数资料
型号: MAX8971EWP+T
厂商: Maxim Integrated Products
文件页数: 31/39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
USB Suspend
Input Voltage Disable
REGISTER
NAME
CHGCNTL1
I 2 C SLAVE
ADDRESS
0x6A
REGISTER
ADDRESS
0x05
ACCESS TYPE
R/W
SPECIAL
FEATURES
N/A
RESET CONDITION
VSTBY INVALID or rising
edge of SFO_POK
BITS
B7
B6
B5
B4
B3
B2
B1
B0
NAME
BIT NAME
DCMON_DIS
USB_SUS
DCMON_DIS
BIT DESCRIPTION
DCMON_DIS, disabled the monitoring of input voltage by the input power limiter
USB suspend, low-quiescent current standby mode
USB_SUS
DEFAULT
0
0
0
0
0
0
0
0
Fast-Charge Current and Timer Control
REGISTER
NAME
FCHGCRNT
I 2 C SLAVE
ADDRESS
0x6A
REGISTER
ADDRESS
0x06
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
FCHGT[2:0]
CHGCC[4:0]
BIT
NAME
DESCRIPTION
DEFAULT
Fast-Charge Current Selection
B4–B0
CHGCC[4:0]
When the charger is enabled, the charge current limit is set by these bits. These
bits range from 250mA to 1.55A in 50mA steps. See Table 6 for a complete
500mA
listing of codes for CHGCC[4:0]
Fast-Charge Timer Duration (t FC )
0x00 = 0b000 = disable
0x01 = 0b001 = 4hrs
0x02 = 0b010 = 5hrs
B7, B6, B5
FCHGT[2:0]
0x03 = 0b011 = 6hrs
0b010
0x04 = 0b100 = 7hrs
0x05 = 0b101 = 8hrs
0x06 = 0b110 = 9hrs
0x07 = 0b111 = 10hrs
Maxim Integrated
31
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