AP2161/ AP2171
1A SINGLE CHANNEL CURRENT-LIMITED POWER SWITCH
Description
The AP2161 and AP2171 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 is
available with both polarities of Enable input. They 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 overcurrent reporting
and does not require any external components.
All devices are available in SO-8, MSOP-8EP, SOT25, and
U-DFN2018-6 packages
Pin Assignments
( Top View )
GND
IN
IN
EN
1
2
3
4
8
7
6
5
NC
OUT
OUT
FLG
SO-8
( Top View )
GND
1
2
3
4
8
7
6
5
NC
OUT
OUT
FLG
Features
Single USB Port Power Switches
Overcurrent and Thermal Protection
1.5A 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 (AP2161) or Active High (AP2171) 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
IN
IN
EN
MSOP-8EP
( Top View )
OUT
GND
FLG
1
2
3
4
EN
5
IN
SOT25
( Top View )
GND
IN
EN
1
6
OUT
OUT
FLG
2
5
3
4
Applications
Consumer Electronics – LCD TVs & Monitors, Game Machines
Communications – Set-Top-Boxes, GPS, Smartphones
Computing – Laptops, Desktops, Servers, Printers, Docking
Station, HUB
U-DFN2018-6
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.
AP2161/ AP2171
Document number: DS31564 Rev. 9 - 2
1 of 18
www.diodes.com
August 2015
© Diodes Incorporated
AP2161/ AP2171
Typical Applications Circuit
AP2171 Enable Active High
Power Supply
2.7V to 5.5V
10k
10uF
0.1uF
FLG
EN
GND
IN
OUT
0.1uF
Load
120uF
ON
OFF
Available Options
Part Number
AP2161
AP2171
Channel
1
1
Enable Pin (EN)
Active Low
Active High
Current Limit
(typ)
1.5A
1.5A
Recommended Maximum Continuous
Load Current
1.0A
1.0A
Pin Descriptions
Pin
Name
GND
IN
EN
FLG
OUT
NC
Exposed tab
Pin Number
SO-8
1
2, 3
4
5
6, 7
8
-
MSOP-8EP
1
2, 3
4
5
6, 7
8
Exposed tab
SOT25
2
5
4
3
1
N/A
-
U-DFN2018-6
1
2
3
4
5, 6
N/A
Exposed tab
Function
Ground
Voltage input pin (all IN pins must be tied together externally)
Enable input, active low (AP2161) or active high (AP2171)
Overcurrent and over-temperature fault report; open-drain flag is active low when
triggered
Voltage output pin (all OUT pins must be tied together externally)
No internal connection; recommend tie to OUT pins
Exposed pad.
It should be connected to GND and thermal mass for enhanced thermal
impedance. It should not be used as electrical ground conduction path.
AP2161/ AP2171
Document number: DS31564 Rev. 9 - 2
2 of 18
www.diodes.com
August 2015
© Diodes Incorporated
AP2161/ AP2171
Functional Block Diagram
AP2161, AP2171
IN
Current
Sense
OUT
UVLO
Driver
Current
Limit
EN
FLG
Thermal
Sense
Deglitch
GND
Absolute Maximum Ratings
(@T
A
= +25°C, unless otherwise specified.)
Symbol
ESD HBM
Parameter
Human Body Model ESD Protection
Machine Model ESD Protection
for MSOP-8EP, SOT25 packages
Machine Model ESD Protection
for U-DFN2018-6, SO-8 packages
Input Voltage
Output Voltage
Enable Voltage
Maximum Continuous Load Current
Maximum Junction Temperature
Storage Temperature Range (Note 4)
Ratings
4
400
300
6.5
V
IN
+0.3
6.5
Internal Limited
+150
-65 to +150
Units
kV
V
V
V
V
V
A
°C
°C
ESD MM
V
IN
V
OUT
V
EN ,
V
FLG
I
LOAD
T
J(MAX)
T
ST
Caution:
Stresses greater than the 'Absolute Maximum Ratings' specified above may cause permanent damage to the device. These are stress ratings only;
functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be
affected by exposure to absolute maximum rating conditions for extended periods of time.
Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when handling
and transporting these devices
4. UL Recognized Rating from -30°C to +70°C (Diodes qualified
T
ST
from -65°C to +150°C).
Note:
Recommended Operating Conditions
(@T
A
= +25°C, unless otherwise specified.)
Symbol
V
IN
I
OUT
T
A
V
IH
V
IL
Input Voltage
Output Current
Operating Ambient Temperature
High-Level Input Voltage on EN or
EN
Low-Level Input Voltage on EN or
EN
Parameter
Min
2.7
0
-40
2.0
0
Max
5.5
1.0
+85
V
IN
0.8
Units
V
A
°C
V
V
AP2161/ AP2171
Document number: DS31564 Rev. 9 - 2
3 of 18
www.diodes.com
August 2015
© Diodes Incorporated
AP2161/ AP2171
Electrical Characteristics
Symbol
V
UVLO
I
SHDN
I
Q
I
LEAK
I
REV
Input UVLO
Input Shutdown Current
Input Quiescent Current
Input Leakage Current
Reverse Leakage Current
Parameter
R
LOAD
= 1kΩ
Disabled, I
OUT
= 0
Enabled, I
OUT
= 0
Disabled, OUT grounded
Disabled, V
IN
= 0V, V
OUT
= 5V, I
REV
at V
IN
V
IN
= 5V,
I
OUT
= 1A
V
IN
= 3.3V,
I
OUT
= 1A
I
SHORT
I
LIMIT
I
Trig
I
SINK
t
D(ON)
t
R
t
D(OFF)
t
F
R
FLG
t
Blank
T
SHDN
T
HYS
Short-Circuit Current Limit
Over-Load Current Limit
Current limiting trigger threshold
EN Input leakage
Output turn-on delay time
Output turn-on rise time
Output turn-off delay time
Output turn-off fall time
FLG output FET on-resistance
FLG blanking time
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
Thermal Resistance Junction-to-
Ambient
T
A
= +25°C
SOT25, MSOP-8EP, SO-8
U-DFN2018-6
(@T
A
= +25°C, V
IN
= +5V, unless otherwise specified.)
Test Conditions
Min
1.6
-
-
-
-
-
-
-
-
-
-
1.1
-
-
-
-
-
-
-
4
-
-
-
-
-
-
Typ
1.9
0.5
45
-
1
95
90
-
120
-
1.2
1.5
2.0
-
0.05
0.6
0.01
0.05
20
7
140
25
110
60
157
70
Max
2.5
1
70
1
-
115
110
140
140
170
-
1.9
-
1
-
1.5
-
0.1
40
15
-
-
-
-
-
-
A
A
A
µA
ms
ms
ms
ms
Ω
ms
C
C
°C/W
°C/W
°C/W
°C/W
mΩ
Unit
V
uA
µA
µA
µA
R
DS(ON)
Switch on-resistance
-40°C ≤ T
A
≤ +85°C
T
A
= +25°C
-40°C ≤ T
A
≤ +85°C
Enabled into short circuit, C
L
= 68µF
V
IN
= 5V, V
OUT
= 4.6V, C
L
= 68µF, -40°C ≤ T
A
≤ +85°C
Output Current Slew rate (<100A/s) , C
L
=68µF
V
EN
= 5V
C
L
= 1µF, R
LOAD
= 10Ω
C
L
= 1µF, R
LOAD
= 10Ω
C
L
= 1µF, R
LOAD
= 10Ω
C
L
= 1µF, R
LOAD
= 10Ω
I
FLG
= 10mA
C
IN
= 10µF, C
L
= 68µF
Enabled, R
LOAD
= 1kΩ
-
SO-8 (Note 5)
MSOP-8EP (Note 6)
SOT25 (Note 7)
U-DFN2018-6 (Note 8)
θ
JA
Notes:
5. Test condition for SO-8: Device mounted on FR-4, 2oz copper, with minimum recommended pad layout.
6. Test condition for MSOP-8EP: Device mounted on 2” x 2” FR-4 substrate PC board, 2oz copper, with minimum recommended pad on top layer and
thermal vias to bottom layer ground plane.
7. Test condition for SOT25: Device mounted on FR-4, 2oz copper, with minimum recommended pad layout.
8. Test condition for U-DFN2018-6: Device mounted on FR-4 2-layer board, 2oz copper, with minimum recommended pad on top layer and 3 vias to bottom
layer 1.0” x 1.4” ground plane.
AP2161/ AP2171
Document number: DS31564 Rev. 9 - 2
4 of 18
www.diodes.com
August 2015
© Diodes Incorporated
AP2161/ AP2171
Typical Performance Characteristics
V
EN
50%
50%
V
EN
T
D(OFF)
T
F
50%
50%
T
R
T
D(ON)
V
OUT
10%
90%
T
R
T
D(ON)
V
OUT
10%
90%
T
D(OFF)
T
F
90%
10%
90%
10%
Figure 1 Voltage Waveforms: AP2161 (left), AP2171 (right)
All Enable Plots are for AP2171 Active High
Turn-On Delay and Rise Time
Turn-Off Delay and Fall Time
Ven
5V/div
Ven
5V/div
CL = 1µF
Vout
2V/div
CL = 1µF
TA = +25°C
RL = 10Ω
Vout
2V/div
TA = +25°C
RL = 10Ω
500µs/div
500µs/div
Turn-On Delay and Rise Time
Turn-Off Delay and Fall Time
Ven
5V/div
Ven
5V/div
CL = 100µF
Vout
2V/div
CL = 100µF
TA = +25°C
RL = 10Ω
Vout
2V/div
TA = +25°C
RL = 10Ω
500µs/div
500µs/div
AP2161/ AP2171
Document number: DS31564 Rev. 9 - 2
5 of 18
www.diodes.com
August 2015
© Diodes Incorporated
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