AP2145/AP2155
0.5A SINGLE CHANNEL CURRENT-LIMITED POWER
SWITCH
Description
Features
The AP2145 and AP2155 are integrated high-side power switches
optimized for Universal Serial Bus (USB) and other hot-swap
applications. The family of devices complies with USB 2.0 and
available with both polarities of Enable input. They offer current
and thermal limiting and short circuit protection as well as
controlled rise time and under-voltage lockout functionality. A 7ms
deglitch capability on the open-drain Flag output prevents false
over-current reporting and does not require any external
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Single USB port power switches
Over-current and thermal protection
0.8A accurate current limiting
Reverse Current Blocking
90mΩ on-resistance
Input voltage range: 2.7V – 5.5V
0.6ms typical rise time
Very low shutdown current: 1uA (max)
Fault report (FLG) with blanking time (7ms typ)
ESD protection: 6KV HBM, 400V MM
Active high (AP2155) or active low (AP2145) enable
Ambient temperature range -40ºC to 85°C
SOP-8L and MSOP-8L-EP (Exposed Pad): Available in
“Green” Molding Compound (No Br, Sb)
components.
All devices are available in SOP-8L and MSOP-8L-EP packages.
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Lead Free Finish/ RoHS Compliant (Note 1)
UL Recognized, File Number E322375 (pending)
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IEC60950-1 CB Scheme Certified
Applications
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Consumer electronics – LCD TV & Monitor, Game Machines
Communications – Set-Top-Box, GPS, Smartphone
Computing – Laptop, Desktop, Servers, Printers, Docking Station, HUB
Typical Application Circuit
AP2155 Enable Active High
Load
IN
Power Supply
2.7V to 5.5V
OUT
0.1uF
0.1uF
10uF
10k
120uF
FLG
EN
GND
ON
OFF
Available Options
Part Number
Recommended maximum
continuous load current
Current limit
(typical)
Channel
Enable pin (EN)
AP2145
AP2155
1
1
Active Low
Active High
0.8A
0.8A
0.5A
0.5A
AP2145/AP2155 Rev. 1
1 of 14
www.diodes.com
DECEMBER 2009
© Diodes Incorporated