AP2145/AP2155
0.5A SINGLE CHANNEL CURRENT-LIMITED POWER
SWITCH WITH OUTPUT DISCHARGE
Description
Pin Assignments
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 components.
SO-8
1
2
3
4
8
7
6
5
EN
FLG
GND
NC
OUT
IN
OUT
NC
All devices are available in SO-8 and MSOP-8EP packages.
Features
(Top View)
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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
MSOP-8EP
1
2
8
EN
OUT
7
6
5
Input voltage range: 2.7V – 5.5V
0.6ms typical rise time
FLG
IN
OUT
NC
3
4
GND
NC
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
SO-8 and MSOP-8EP (Exposed Pad): Available in
“Green” Molding Compound (No Br, Sb)
Lead Free Finish/ RoHS Compliant (Note 1)
UL Recognized, File Number E322375
IEC60950-1 CB Scheme Certified
(Top View)
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
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Notes:
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
Typical Application Circuit
IN
OUT
Load
Power Supply
2.7V to 5.5V
0.1uF
0.1uF
10uF
10k
120uF
FLG
EN
GND
ON
OFF
Available Options
Part Number
Recommended maximum
continuous load current
Channel
Enable pin (EN)
Current limit (typical)
AP2145
AP2155
1
1
Active Low
Active High
0.8A
0.8A
0.5A
0.5A
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www.diodes.com
September 2010
© Diodes Incorporated
AP2145/AP2155
Document number: DS32031 Rev. 2 - 2