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AP2181_0906 Datasheet, PDF (1/18 Pages) Diodes Incorporated – 1.5A SINGLE CHANNEL CURRENT-LIMITED POWER
Features
AP2181/AP2191
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER
SWITCH
Description
• Single USB port power switches
• Over-current and thermal protection
• 2.1A accurate current limiting
• Reverse Current Blocking
• 95mΩ 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: 4KV HBM, 300V MM
• Active low (AP2181) or active high (AP2191) enable
• Ambient temperature range: -40°C to 85°C
• SOT25, SOP-8L, MSOP-8L-EP (Exposed Pad), and
DFN2018-6: 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
The AP2181 and AP2191 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.
All devices are available in SOP-8L, MSOP-8L-EP, SOT25 and
DFN2018-6 packages.
Applications
• Consumer electronics – LCD TV & Monitor, Game Machines
• Communications – Set-Top-Box, GPS, Smartphone
• Computing – Laptop, Desktop, Servers, Printers, Docking Station, HUB
Typical Application Circuit
AP2191 Enable Active High
Power Supply
2.7V to 5.5V
IN
OUT
10k 10uF 0.1uF
FLG
ON
OFF
EN GND
Load
0.1uF
120uF
Available Options
Part Number Channel
AP2181
1
AP2191
1
Enable pin (EN)
Active Low
Active High
Current limit
(typical)
2.1A
2.1A
Recommended maximum
continuous load current
1.5A
1.5A
AP2181/AP2191 Rev. 6
DS31563
1 of 18
www.diodes.com
JUNE 2009
© Diodes Incorporated