AP2181/AP2191
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER
SWITCH
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
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Single USB port power switches
Over-current and thermal protection
2.1A accurate current limiting
Reverse Current Blocking
95m
Ω
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
Description
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
•
•
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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
AP2191 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
AP2181
AP2191
Channel
1
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
AP2181/AP2191
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER
SWITCH
Ordering Information
AP 21 X 1 XX G - X
Enable
8 : Active Low
9 : Active High
Channel
1 : 1 Channel
Package
W : SOT25
S : SOP-8L
MP : MSOP-8L-EP
FM : DFN2018-6
Packaging
(Note 2)
SOT25
SOP-8L
MSOP-8L-EP
DFN2018-6
Green
G : Green
Packing
7/13 : Tape & Reel
Device
AP21X1WG-7
AP21X1SG-13
AP21X1MPG-13
AP21X1FMG-7
Notes:
Package
Code
W
S
MP
FM
7”/13” Tape and Reel
Quantity
Part Number Suffix
3000/Tape & Reel
-7
2500/Tape & Reel
-13
2500/Tape & Reel
-13
3000/Tape & Reel
-7
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
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
AP2181/AP2191 Rev. 6
DS31563
2 of 18
www.diodes.com
JUNE 2009
©
Diodes Incorporated
AP2181/AP2191
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER
SWITCH
Pin Assignment
( Top View )
( Top View )
GND
1
IN
2
IN
3
EN
4
8
NC
GND
7
6
5
1
2
3
4
8
7
6
5
NC
OUT
OUT
FLG
OUT
OUT
FLG
IN
IN
EN
MSOP-8L-EP
SOP-8L
( Top View )
OUT
GND
FLG
1
2
3
4
EN
5
IN
( Top View )
GND
IN
EN
1
6
OUT
OUT
FLG
2
5
3
4
SOT25
DFN2018-6
Pin Descriptions
Pin Number
SOP-8L
MSOP-8L-EP
1
2, 3
4
5
6, 7
8
SOT25
2
5
4
3
1
N/A
DFN2018-6
1
2
3
4
5, 6
N/A
Ground
Voltage input pin (all IN pins must be tied together
externally)
Enable input, active low (AP2181) or active high
(AP2191)
Over-current 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
Descriptions
Pin
Name
GND
IN
EN
FLG
OUT
NC
AP2181/AP2191 Rev. 6
DS31563
3 of 18
www.diodes.com
JUNE 2009
©
Diodes Incorporated
AP2181/AP2191
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER
SWITCH
Functional Block Diagram
AP2181, AP2191
IN
Current
Sense
OUT
UVLO
Driver
Current
Limit
EN
FLG
Thermal
Sense
Deglitch
GND
Absolute Maximum Ratings
Symbol
ESD HBM
Parameter
Human Body Model ESD Protection
Machine Model ESD Protection
for MSOP-8L-EP, SOT25 packages
Machine Model ESD Protection
for DFN2018-6, SOP-8L packages
Input Voltage
Output Voltage
Enable Voltage
Maximum Continuous Load Current
Maximum Junction Temperature
Storage Temperature Range (Note 3)
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
Jmax
T
ST
Notes:
3. UL Recognized Rating from -30°C to 70°C (Diodes qualified
T
ST
from -65°C to 150°C)
Recommended Operating Conditions
Symbol
V
IN
I
OUT
T
A
Parameter
Input voltage
Output Current
Operating Ambient Temperature
Min
2.7
0
-40
Max
5.5
1.5
85
Units
V
A
°C
AP2181/AP2191 Rev. 6
DS31563
4 of 18
www.diodes.com
JUNE 2009
©
Diodes Incorporated
AP2181/AP2191
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER
SWITCH
Electrical Characteristics
(T
A
= 25
°
C, V
IN
= +5.0V, unless otherwise stated)
Symbol
Parameter
V
UVLO
I
SHDN
I
Q
I
LEAK
I
REV
Input UVLO
Input Shutdown Current
Input Quiescent Current
Input Leakage Current
Reverse Leakage Current
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
SOT25, MSOP-8L-EP,
T
A
= 25
°
C SOP-8L
V
IN
= 5V,
DFN2018-6
I
OUT
= 1.5A
-40
°
C
≤
T
A
≤
85
°
C
V
IN
= 3.3V,
I
OUT
= 1.5A
I
SHORT
I
LIMIT
I
Trig
V
IL
V
IH
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 Logic Low Voltage
EN Input Logic High Voltage
EN Input leakage
Output turn-on delay time
Output turn-on rise time
Output turn-off delay time
Output turn-off fall time
T
A
= 25
°
C
-40
°
C
≤
T
A
≤
85
°
C
Enabled into short circuit, C
L
=100
μ
F
1.6
Test Conditions
Min
Typ.
Max
Unit
1.6
1.9
0.5
45
1
95
90
120
2.0
2.1
2.6
2.5
1
70
1
V
μ
A
μ
A
μ
A
μ
A
115
110
140
140
170
A
2.6
A
A
0.8
V
V
μ
A
ms
ms
ms
ms
Ω
ms
°
C
°
C
°
C/W
°
C/W
°
C/W
°
C/W
R
DS(ON)
Switch on-resistance
mΩ
V
IN
= 5V, V
OUT
= 4.5V, C
L
=120
μ
F, -40
°
C≤T
A
≤85
°
C
Output Current Slew rate (<100A/s) , C
L
=100
μ
F
V
IN
= 2.7V to 5.5V
V
IN
= 2.7V to 5.5V
V
EN
= 5V
C
L
=1
μ
F, R
load
=10Ω
C
L
=1
μ
F, R
load
=10Ω
C
L
=1
μ
F, R
load
=10Ω
2
1
0.05
0.6
0.01
0.05
4
20
7
140
25
110
60
157
70
1.5
0.1
40
15
C
L
=1
μ
F, R
load
=10Ω
FLG output FET on-resistance I
FLG
=10mA, C
L
=100
μ
F
FLG blanking time
C
IN
=10uF, C
L
=100
μ
F
Thermal Shutdown Threshold Enabled, R
load
=1kΩ
Thermal Shutdown Hysteresis
SOP-8L (Note 4)
θ
JA
Thermal Resistance
Junction-to-Ambient
MSOP-8L-EP (Note 5)
SOT25 (Note 6)
DFN2018-6 (Note 7)
Notes:
4. Test condition for SOP-8L: Device mounted on FR-4, 2oz copper, with minimum recommended pad layout.
5. Test condition for MSOP-8L-EP: 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.
6. Test condition for SOT25: Device mounted on FR-4, 2oz copper, with minimum recommended pad layout.
7. Test condition for 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”x1.4” ground plane.
AP2181/AP2191 Rev. 6
DS31563
5 of 18
www.diodes.com
JUNE 2009
©
Diodes Incorporated
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