参数资料
型号: MAX8671XETL+T
厂商: Maxim Integrated Products
文件页数: 37/44页
文件大小: 0K
描述: IC PMIC W/CHARGER 40-TQFN-EP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
功能: 充电管理
电池化学: 锂离子(Li-Ion)、锂聚合物(Li-Pol)
电源电压: 4.1 V ~ 6.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 40-WFQFN 裸露焊盘
供应商设备封装: 40-TQFN-EP(5x5)
包装: 带卷 (TR)
PMIC with Integrated Charger and
Smart Power Selector for Handheld Devices
V DC
V USB
V VL
V BAT < V SYS < (V USB OR V DC )
V SYS
V BAT
V BAT
t D1
V EN
V OUT1
V OUT2
V OUT3
t SS3
t D2
t SS1
t SS2
t D3
V OUT4
V OUT5
t SS4
t SS5
INTERNAL
DISCHARGE
V UOK
V DOK
HIGH-Z
HIGH-Z
RESISTORS
HIGH-Z
HIGH-Z
Figure 12. Enable and Disable Waveforms
The VL regulator is not controlled by EN. It is powered
from the higher of USB or DC and automatically powers
up when either of the power inputs exceeds approxi-
mately 1.5V. Similarly, VL automatically powers down
when both the USB and DC power inputs are removed.
Soft-Start/Inrush Current
The MAX8671X implements soft-start on many levels to
control inrush current, to avoid collapsing supply volt-
ages, and to fully comply with the USB 2.0 specifica-
tions. All USB, DC, and charging functions implement
soft-start. The USB and DC nodes only require 4.7μF of
input capacitance. Furthermore, all regulators imple-
ment soft-start to avoid transient overload of power
inputs (Figure 12).
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