AP2181A/ AP2191A
Document number: DS37618 Rev. 1 - 2
1 of 17
www.diodes.com
March 2015
© Diodes Incorporated
AP2181A/ AP2191A
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER SWITCH
Description
The AP2181A and AP2191A are integrated high-side power switches
optimized for Universal Serial Bus (USB) and other hot-swap
applications. This family of devices complies with USB 2.0 and is
available with both polarities of Enable input. The AP2181A and
AP2191A offer current and thermal limiting and short circuit protection
as well as controlled rise time and undervoltage 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 SO-8, MSOP-8EP, SOT25 and
U-DFN2018-6 packages.
Features
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: 1µA (max)
Fault Report (FLG) with Blanking Time (7ms typ)
ESD Protection: 4kV HBM, 300V MM
Active Low (AP2181A) or Active High (AP2191A) Enable
Ambient Temperature Range: -40°C to +85°C
SOT25, SO-8, MSOP-8EP (Exposed Pad), and U-DFN2018-6:
Available in “Green” Molding Compound (No Br, Sb)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
UL Recognized, File Number E322375
IEC60950-1 CB Scheme Certified
Applications
Consumer Electronics – LCD TV & Monitor, Game Machines
Communications – Set-Top Box, GPS, Smartphone
Computing – Laptop, Desktop, Servers, Printers, Docking
Station, HUB
Pin Assignments
SO-8
( Top View )
1
2
3
4
8
7
6
5
NC
OUT
FLG
OUT
GND
EN
IN
IN
MSOP-8EP
1
2
3
4
8
7
6
5
NC
OUT
FLG
OUT
GND
EN
IN
IN
( Top View )
EN
OUT
GND
IN
FLG
1
2
3
5
4
SOT25
( Top View )
FLGEN
GND
OUT
OUT
IN
1
3
2
4
5
6
U-DFN2018-6
( Top View )
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
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