APL3555 Datasheet, PDF (1/18 Pages) Anpec Electronics Coropration – USB Power-Distribution Switches

APL3555
USB Power-Distribution Switches
Features
• 62mΩ Power Switch On Resistance
• Wide Supply Voltage Range: 2.7V to 5.5V
• Fix Current Limit Protection
• Fast Over current Response: 2us (typ.)
• Over-Temperature Protection
• Fault Indication Output
• Enable Input
• Built-in Soft-Start
Applications
• Notebook and Desktop Computers
• USB Ports
• High-Side Power Protection Switchs
• MHL Ports
Pin Configurations
General Description
The APL3555 series of power switches are designed for
USB applications. The 62mΩ N-channel MOSFET power
switch satisfies the voltage drop requirements of USB
specification.
The protection features include current-limit protection,
short-circuit protection, and over-temperature protection.
The device limits the output current at current limit thresh-
old level. When V drops below V -1V, the devices limit
OUT
IN
the current to a lower and safe level. The over-tempera-
ture protection limits the junction temperature below
140^oC in case of short circuit or over load conditions.
Other features include a deglitched OCB output to indi-
cate the fault condition and an enable input to enable or
disable the device.
Simplified Application Circuit
5V
USB Port
VIN
VOUT
USB
Controller
APL3555A/B/C/D
OCB
EN/ENB
GND
VOUT 1
GND 2
OCB 3
5 VIN
4 EN
SOT-23-5
APL3555A/C
(Top View)
VOUT 1
GND 2
OCB 3
5 VIN
4 ENB
SOT-23-5
APL3555B/D
(Top View)
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
1
Rev. A.1 - Mar., 2016
www.anpec.com.tw