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CDH2D09 bảng dữ liệu(PDF) 37 Page - Maxim Integrated Products

tên linh kiện CDH2D09
Giải thích chi tiết về linh kiện  PMIC with Integrated Charger and Smart Power Selector for Handheld Devices
PDF  44 Pages
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nhà sản xuất  MAXIM [Maxim Integrated Products]
Trang chủ  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

CDH2D09 bảng dữ liệu(HTML) 37 Page - Maxim Integrated Products

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PMIC with Integrated Charger and
Smart Power Selector for Handheld Devices
______________________________________________________________________________________
37
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).
VEN
VOUT1
VOUT2
VVL
VUSB
INTERNAL
DISCHARGE
RESISTORS
VSYS
VBAT
VBAT
tSS5
VUOK
HIGH-Z
VDC
VOUT3
VOUT4
VOUT5
HIGH-Z
VDOK
HIGH-Z
HIGH-Z
VBAT < VSYS < (VUSB OR VDC)
tSS4
tD3
tSS3
tD2
tSS2
tSS1
tD1
Figure 12. Enable and Disable Waveforms



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