AP2191 [DIODES]

1.5A SINGLE CHANNEL CURRENT-LIMITED POWER; 1.5A单通道限流
AP2191
型号: AP2191
厂家: DIODES INCORPORATED    DIODES INCORPORATED
描述:

1.5A SINGLE CHANNEL CURRENT-LIMITED POWER
1.5A单通道限流

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AP2181/AP2191  
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER  
SWITCH  
Description  
Features  
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  
Single USB port power switches  
Over-current and thermal protection  
2.1A accurate current limiting  
Reverse Current Blocking  
95mon-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)  
components.  
All devices are available in SOP-8L, MSOP-8L-EP, SOT25 and  
DFN2018-6 packages.  
Lead Free Finish / RoHS Compliant (Note 1)  
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  
Typical Application Circuit  
AP2191 Enable Active High  
Load  
IN  
Power Supply  
2.7V to 5.5V  
OUT  
0.1uF  
0.1uF  
10uF  
10k  
120uF  
FLG  
EN  
GND  
ON  
OFF  
Available Options  
Part Number  
Recommended maximum  
continuous load current  
Current limit  
(typical)  
Channel  
Enable pin (EN)  
AP2181  
AP2191  
1
1
Active Low  
Active High  
2.1A  
2.1A  
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  
Packing  
Green  
Enable  
Channel  
Package  
G : Green  
7/13 : Tape & Reel  
W : SOT25  
S : SOP-8L  
8 : Active Low  
9 : Active High  
1 : 1 Channel  
MP : MSOP-8L-EP  
FM : DFN2018-6  
7”/13” Tape and Reel  
Package  
Code  
W
Packaging  
(Note 2)  
SOT25  
SOP-8L  
MSOP-8L-EP  
DFN2018-6  
Device  
Quantity  
Part Number Suffix  
AP21X1WG-7  
3000/Tape & Reel  
2500/Tape & Reel  
2500/Tape & Reel  
3000/Tape & Reel  
-7  
-13  
-13  
-7  
AP21X1SG-13  
AP21X1MPG-13  
AP21X1FMG-7  
S
MP  
FM  
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  
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 )  
1
2
3
4
8
7
6
5
GND  
IN  
NC  
NC  
1
2
8
7
6
GND  
IN  
OUT  
OUT  
OUT  
FLG  
3
4
IN  
IN  
OUT  
FLG  
5
EN  
EN  
MSOP-8L-EP  
( Top View )  
SOP-8L  
( Top View )  
1
GND  
IN  
6
OUT  
OUT  
FLG  
1
OUT  
5
4
IN  
5
2
2
3
GND  
FLG  
3
4
EN  
EN  
DFN2018-6  
SOT25  
Pin Descriptions  
Pin Number  
Pin  
SOP-8L  
Name  
Descriptions  
SOT25  
DFN2018-6  
MSOP-8L-EP  
GND  
IN  
1
2
5
1
2
Ground  
Voltage input pin (all IN pins must be tied together  
externally)  
2, 3  
Enable input, active low (AP2181) or active high  
(AP2191)  
EN  
4
5
4
3
3
4
Over-current and over-temperature fault report;  
open-drain flag is active low when triggered  
FLG  
Voltage output pin (all OUT pins must be tied together  
externally)  
OUT  
NC  
6, 7  
8
1
5, 6  
N/A  
N/A  
No internal connection; recommend tie to OUT pins  
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  
Current  
Sense  
IN  
OUT  
UVLO  
Current  
Driver  
EN  
Limit  
FLG  
Deglitch  
Thermal  
Sense  
GND  
Absolute Maximum Ratings  
Symbol  
Parameter  
Ratings  
Units  
ESD HBM  
Human Body Model ESD Protection  
4
KV  
Machine Model ESD Protection  
for MSOP-8L-EP, SOT25 packages  
400  
300  
V
V
ESD MM  
Machine Model ESD Protection  
for DFN2018-6, SOP-8L packages  
VIN  
VOUT  
Input Voltage  
6.5  
VIN + 0.3  
6.5  
V
V
Output Voltage  
VEN , VFLG  
Iload  
Enable Voltage  
V
A
Maximum Continuous Load Current  
Maximum Junction Temperature  
Storage Temperature Range (Note 3)  
Internal Limited  
150  
TJmax  
TST  
°C  
°C  
-65 to 150  
Notes:  
3. UL Recognized Rating from -30°C to 70°C (Diodes qualified TST from -65°C to 150°C)  
Recommended Operating Conditions  
Symbol  
Parameter  
Min  
2.7  
0
Max  
5.5  
1.5  
85  
Units  
Input voltage  
Output Current  
V
A
°C  
VIN  
IOUT  
TA  
Operating Ambient Temperature  
-40  
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  
(TA = 25°C, VIN = +5.0V, unless otherwise stated)  
Symbol  
VUVLO  
ISHDN  
IQ  
Parameter  
Test Conditions  
Min Typ. Max Unit  
Input UVLO  
Rload=1k  
1.6  
1.9  
0.5  
45  
2.5  
1
V
Input Shutdown Current  
Input Quiescent Current  
Input Leakage Current  
Reverse Leakage Current  
Disabled, IOUT= 0  
Enabled, IOUT= 0  
μA  
μA  
μA  
μA  
70  
1
ILEAK  
IREV  
Disabled, OUT grounded  
Disabled, VIN= 0V, VOUT= 5V, IREV at VIN  
1
SOT25, MSOP-8L-EP,  
SOP-8L  
95  
90  
115  
TA = 25°C  
V
IN = 5V,  
DFN2018-6  
110  
140  
140  
170  
RDS(ON) Switch on-resistance  
IOUT= 1.5A  
mΩ  
-40°C TA 85°C  
TA = 25°C  
120  
VIN = 3.3V,  
OUT= 1.5A  
I
-40°C TA 85°C  
ISHORT Short-Circuit Current Limit  
2.0  
2.1  
A
A
Enabled into short circuit, CL=100μF  
ILIMIT  
Over-Load Current Limit  
1.6  
2
2.6  
VIN= 5V, VOUT= 4.5V, CL=120μF, -40°CTA 85°C  
Current limiting trigger  
threshold  
ITrig  
2.6  
A
Output Current Slew rate (<100A/s) , CL=100μF  
VIL  
VIH  
EN Input Logic Low Voltage  
VIN = 2.7V to 5.5V  
0.8  
1
V
EN Input Logic High Voltage VIN = 2.7V to 5.5V  
V
ISINK  
EN Input leakage  
VEN = 5V  
μA  
ms  
ms  
ms  
ms  
TD(ON) Output turn-on delay time  
TR Output turn-on rise time  
TD(OFF) Output turn-off delay time  
0.05  
0.6  
0.01  
0.05  
20  
CL=1μF, Rload=10Ω  
CL=1μF, Rload=10Ω  
CL=1μF, Rload=10Ω  
CL=1μF, Rload=10Ω  
1.5  
TF  
Output turn-off fall time  
0.1  
40  
15  
RFLG  
FLG output FET on-resistance  
I
FLG =10mA, CL=100μF  
CIN=10uF, CL=100μF  
TSHDN Thermal Shutdown Threshold Enabled, Rload=1kΩ  
TBlank FLG blanking time  
4
7
ms  
°C  
°C  
140  
25  
THYS  
Thermal Shutdown Hysteresis  
SOP-8L (Note 4)  
110  
60  
°C/W  
°C/W  
°C/W  
°C/W  
MSOP-8L-EP (Note 5)  
SOT25 (Note 6)  
Thermal Resistance  
Junction-to-Ambient  
θJA  
157  
70  
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  
AP2181/AP2191  
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER  
SWITCH  
Typical Performance Characteristics  
VEN  
VEN  
50%  
50%  
50%  
50%  
TD(OFF)  
TD(OFF)  
TR  
TR  
TF  
TF  
TD(ON)  
TD(ON)  
90%  
90%  
90%  
90%  
VOUT  
VOUT  
10%  
10%  
10%  
10%  
Figure 1. Voltage Waveforms: AP2181 (left), AP2191 (right)  
All Enable Plots are for AP2191 Active High  
Turn-On Delay and Rise Time  
Turn-Off Delay and Fall Time  
Ven  
Ven  
5V/div  
5V/div  
Vout  
2V/div  
Vout  
2V/div  
C
=1uF  
=25°C  
=5  
L
T
A
C
=1uF  
=25°C  
=5ꢀ  
L
R
L
T
A
R
L
400us/div  
400us/div  
Turn-On Delay and Rise Time  
Turn-Off Delay and Fall Time  
Ven  
Ven  
5V/div  
5V/div  
Vout  
2V/div  
Vout  
2V/div  
C
=100uF  
=25°C  
=5ꢀ  
L
T
A
C
=100uF  
=25°C  
=5ꢀ  
L
R
L
T
A
R
L
400us/div  
400us/div  
AP2181/AP2191 Rev. 6  
DS31563  
6 of 18  
www.diodes.com  
JUNE 2009  
© Diodes Incorporated  
AP2181/AP2191  
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER  
SWITCH  
Typical Performance Characteristics  
(Continued)  
Short Circuit Current,  
Device Enabled Into Short  
Inrush Current  
Ven  
Ven  
5V/div  
5V/div  
CL=470uF  
VIN=5V  
TA=25°C  
RL=3.3ꢀ  
CL=100uF  
Iout  
500mA/div  
Iout  
500mA/div  
V
=5V  
IN  
T
=25°C  
A
C
=100uF  
L
CL=220uF  
1ms/div  
500us/div  
0.6 Load Connected to Enabled Device  
Short Circuit with Blanking Time and Recovery  
V
=5V  
V
=5V  
IN  
IN  
T
=25°C  
T
=25°C  
A
A
Vout  
5V/div  
C
=100uF  
L
C
=100uF  
L
Vflag  
2V/div  
Vflag  
5V/div  
Iout  
1A/div  
Iout  
2A/div  
2ms/div  
20ms/div  
Power On  
UVLO Increasing  
Vflag  
5V/div  
Vin  
2V/div  
T
=25°C  
=68uF  
=3.3ꢀ  
A
C
R
L
L
Iout  
500mA/div  
T
=25°C  
A
Ven  
5V/div  
C
R
=68uF  
L
L
Iout  
500mA/div  
=3.3ꢀ  
Vin  
5V/div  
1ms/div  
1ms/div  
AP2181/AP2191 Rev. 6  
DS31563  
7 of 18  
www.diodes.com  
JUNE 2009  
© Diodes Incorporated  
AP2181/AP2191  
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER  
SWITCH  
Typical Performance Characteristics  
(Continued)  
UVLO Decreasing  
Current Limit Response vs Peak Current  
45  
T
=25°C  
=68uF  
=3.3ꢀ  
A
40  
35  
30  
25  
20  
15  
10  
5
C
L
L
Vin  
2V/div  
R
V
T
=5V  
IN  
=25°C  
A
Iout  
500mA/div  
0
0
2
4
6
8
10  
12  
Peak Current (A)  
10ms/div  
Turn-On Time vs Input Voltage  
Turn-Off Time vs Input Voltage  
850  
750  
650  
550  
450  
350  
250  
55  
50  
45  
40  
35  
30  
25  
C
R
=1uF  
=10ꢀ  
=25°C  
L
L
T
A
C
R
=1uF  
=10ꢀ  
=25°C  
L
L
T
A
1.5  
2
2.5  
3
3.5  
4
4.5  
5
5.5  
6
1.5  
2
2.5  
3
3.5  
4
4.5  
5
5.5  
6
Input Voltage (V)  
Input Voltage (V)  
Rise Time vs Input Voltage  
Fall Time vs Input Voltage  
650  
600  
550  
500  
450  
400  
350  
300  
25  
24  
23  
22  
21  
20  
19  
C
=1uF  
L
C
R
=1uF  
=10ꢀ  
=25°C  
L
R
=10ꢀ  
L
L
T
A
=25°C  
T
A
2
2.5  
3
3.5  
4
4.5  
5
5.5  
6
2
2.5  
3
3.5  
4
4.5  
5
5.5  
6
Input Voltage (V)  
Input Voltage (V)  
AP2181/AP2191 Rev. 6  
DS31563  
8 of 18  
www.diodes.com  
JUNE 2009  
© Diodes Incorporated  
AP2181/AP2191  
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER  
SWITCH  
Typical Performance Characteristics  
(Continued)  
Supply Current, Output Enabled vs Ambient Temperature  
Supply Current, Output Disabled vs Ambient Temperature  
52  
47  
42  
37  
32  
27  
0.9  
0.8  
0.7  
0.6  
0.5  
0.4  
0.3  
0.2  
0.1  
0.0  
Vin=5.5V  
Vin=5.0V  
Vin=5.0V  
Vin=5.5V  
Vin=3.3V  
Vin=2.7V  
Vin=3.3V  
Vin=2.7V  
60  
-60  
-40  
-20  
0
20  
40  
80  
100  
-60  
-40  
-20  
0
20  
40  
60  
80  
80  
80  
100  
Ambient Temperature (°C)  
Ambient Temperature (°C)  
Static Drain-Source On-State Resistance vs Ambient  
Temperature  
Short-Circuit Output Current vs Ambient Temperature  
2.60  
2.50  
2.40  
2.30  
2.20  
2.10  
2.00  
180  
C
=100uF  
L
Vin=2.7V  
170  
160  
150  
140  
130  
120  
110  
100  
90  
Vin=2.7V  
Vin=5.0V  
Vin=3.3V  
Vin=3.3V  
Vin=5V  
Vin=5.5V  
80  
80  
-60  
-40  
-20  
0
20  
40  
60  
100  
-60  
-40  
-20  
0
20  
40  
60  
100  
Ambient Temperature (°C)  
Ambient Temperature (°C)  
Undervoltage Lockout vs Ambient Temperature  
Threshold Trip Current vs Input Voltage  
2.15  
2.10  
2.05  
2.00  
1.95  
1.90  
3.24  
3.22  
3.20  
3.18  
3.16  
3.14  
3.12  
3.10  
3.08  
UVLO Rising  
T
=25°C  
=68uF  
A
C
L
UVLO Falling  
2.8  
3.3  
3.8  
4.3  
4.8  
5.3  
-60  
-40  
-20  
0
20  
40  
60  
100  
Input Voltage (V)  
Ambient Temperature (°C)  
AP2181/AP2191 Rev. 6  
DS31563  
9 of 18  
www.diodes.com  
JUNE 2009  
© Diodes Incorporated  
AP2181/AP2191  
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER  
SWITCH  
Application Note  
Power Supply Considerations  
A 0.01-μF to 0.1-μF X7R or X5R ceramic bypass capacitor between IN and GND, close to the device, is  
recommended. Placing a high-value electrolytic capacitor on the input (10-μF minimum) and output pin(s) is  
recommended when the output load is heavy. This precaution reduces power-supply transients that may  
cause ringing on the input. Additionally, bypassing the output with a 0.01-μF to 0.1-μF ceramic capacitor  
improves the immunity of the device to short-circuit transients.  
Over-current and Short Circuit Protection  
An internal sensing FET is employed to check for over-current conditions. Unlike current-sense resistors,  
sense FETs do not increase the series resistance of the current path. When an overcurrent condition is  
detected, the device maintains a constant output current and reduces the output voltage accordingly.  
Complete shutdown occurs only if the fault stays long enough to activate thermal limiting.  
Three possible overload conditions can occur. In the first condition, the output has been shorted to GND  
before the device is enabled or before VIN has been applied. The AP2181/AP2191 senses the short circuit  
and immediately clamps output current to a certain safe level namely ILIMIT  
.
In the second condition, an output short or an overload occurs while the device is enabled. At the instance  
the overload occurs, higher current may flow for a very short period of time before the current limit function  
can react. After the current limit function has tripped (reached the over-current trip threshold), the device  
switches into current limiting mode and the current is clamped at ILIMIT  
.
In the third condition, the load has been gradually increased beyond the recommended operating current.  
The current is permitted to rise until the current-limit threshold (ITRIG) is reached or until the thermal limit of  
the device is exceeded. The AP2181/AP2191 is capable of delivering current up to the current-limit threshold  
without damaging the device. Once the threshold has been reached, the device switches into its current  
limiting mode and is set at ILIMIT  
.
Note that when the output has been shorted to GND at extremely low temperature (< -30oC), a minimum  
120-μF electrolytic capacitor on the output pin is recommended. A correct capacitor type with capacitor  
voltage rating and temperature characteristics must be properly chosen so that capacitance value does not  
drop too low at the extremely low temperature operation. A recommended capacitor should have  
temperature characteristics of less than 10% variation of capacitance change when operated at extremely  
low temp. Our recommended aluminum electrolytic capacitor type is Panasonic FC series.  
FLG Response  
When an over-current or over-temperature shutdown condition is encountered, the FLG open-drain output  
goes active low after a nominal 7-ms deglitch timeout. The FLG output remains low until both over-current  
and over-temperature conditions are removed. Connecting a heavy capacitive load to the output of the  
device can cause a momentary over-current condition, which does not trigger the FLG due to the 7-ms  
deglitch timeout. The AP2181/AP2191 is designed to eliminate false over-current reporting without the need  
of external components to remove unwanted pulses.  
AP2181/AP2191 Rev. 6  
DS31563  
10 of 18  
www.diodes.com  
JUNE 2009  
© Diodes Incorporated  
AP2181/AP2191  
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER  
SWITCH  
Application Note (Continued)  
Power Dissipation and Junction Temperature  
The low on-resistance of the internal MOSFET allows the small surface-mount packages to pass large  
current. Using the maximum operating ambient temperature (TA) and RDS(ON), the power dissipation can be  
calculated by:  
PD = RDS(ON)× I2  
Finally, calculate the junction temperature:  
TJ = PD x RθJA + TA  
Where:  
TA= Ambient temperature °C  
RθJA = Thermal resistance  
PD = Total power dissipation  
Thermal Protection  
Thermal protection prevents the IC from damage when heavy-overload or short-circuit faults are present for  
extended periods of time. The AP2181/AP2191 implements a thermal sensing to monitor the operating  
junction temperature of the power distribution switch. Once the die temperature rises to approximately 140°C  
due to excessive power dissipation in an over-current or short-circuit condition the internal thermal sense  
circuitry turns the power switch off, thus preventing the power switch from damage. Hysteresis is built into  
the thermal sense circuit allowing the device to cool down approximately 25°C before the switch turns back  
on. The switch continues to cycle in this manner until the load fault or input power is removed. The FLG  
open-drain output is asserted when an over-temperature shutdown or over-current occurs with 7-ms deglitch.  
Under-voltage Lockout (UVLO)  
Under-voltage lockout function (UVLO) keeps the internal power switch from being turned on until the power  
supply has reached at least 1.9V, even if the switch is enabled. Whenever the input voltage falls below  
approximately 1.9V, the power switch is quickly turned off. This facilitates the design of hot-insertion systems  
where it is not possible to turn off the power switch before input power is removed.  
Host/Self-Powered HUBs  
Hosts and self-powered hubs (SPH) have a local power supply that powers the embedded functions and the  
downstream ports (see Figure 2). This power supply must provide from 5.25V to 4.75V to the board side of  
the downstream connection under both full-load and no-load conditions. Hosts and SPHs are required to  
have current-limit protection and must report over-current conditions to the USB controller. Typical SPHs are  
desktop PCs, monitors, printers, and stand-alone hubs.  
Figure 2. Typical One-Port USB Host / Self-Powered Hub  
AP2181/AP2191 Rev. 6  
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AP2181/AP2191  
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER  
SWITCH  
Application Note (Continued)  
Generic Hot-Plug Applications  
In many applications it may be necessary to remove modules or pc boards while the main unit is still  
operating. These are considered hot-plug applications. Such implementations require the control of current  
surges seen by the main power supply and the card being inserted. The most effective way to control these  
surges is to limit and slowly ramp the current and voltage being applied to the card, similar to the way in  
which a power supply normally turns on. Due to the controlled rise times and fall times of the  
AP2181/AP2191, these devices can be used to provide a softer start-up to devices being hot-plugged into a  
powered system. The UVLO feature of the AP2181/AP2191 also ensures that the switch is off after the card  
has been removed, and that the switch is off during the next insertion.  
By placing the AP2181/AP2191 between the VCC input and the rest of the circuitry, the input power reaches  
these devices first after insertion. The typical rise time of the switch is approximately 1ms, providing a slow  
voltage ramp at the output of the device. This implementation controls system surge current and provides a  
hot-plugging mechanism for any device.  
AP2181/AP2191 Rev. 6  
DS31563  
12 of 18  
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AP2181/AP2191  
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER  
SWITCH  
Marking Information  
(1) SOP-8L  
( Top view )  
8
1
7
6
5
4
Logo  
1 : 1 Channel  
G : Green  
YY : Year : 08, 09,10~  
WW : Week : 01~52; 52  
represents 52 and 53 week  
X : Internal Code  
Part Number  
8 : Active Low  
9 : Active High  
AP21X X  
YY WW X X  
2
3
(2) MSOP-8L-EP  
( Top view )  
8
1
7
6
5
A~Z : Green  
MSOP-8L-EP  
Y : Year : 0~9  
W : Week : A~Z : 1~26 week;  
a~z : 27~52 week; z represents  
52 and 53 week  
Logo  
Y W X E  
Part Number  
AP21X X  
8 : Active Low  
9 : Active High  
1 : 1 Channel  
2
3
4
(3) SOT25  
( Top View )  
5
4
XX : Identification code  
Y : Year 0~9  
W X  
XX Y  
W : Week : A~Z : 1~26 week;  
a~z : 27~52 week; z represents  
52 and 53 week  
X : A~Z : Green  
1
2
3
Device  
Package type  
Identification Code  
AP2181W  
AP2191W  
SOT25  
SOT25  
HX  
HY  
AP2181/AP2191 Rev. 6  
DS31563  
13 of 18  
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© Diodes Incorporated  
AP2181/AP2191  
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER  
SWITCH  
Marking Information (Continued)  
(4) DFN2018-6  
(Top View)  
XX : Identification Code  
Y : Year : 0~9  
XX  
W : Week : A~Z : 1~26 week;  
a~z : 27~52 week; z represents  
52 and 53 week  
Y W X  
X : A~Z : Green  
Device  
Package type  
Identification Code  
AP2181FM  
AP2191FM  
DFN2018-6  
DFN2018-6  
HX  
HY  
Package Information (All Dimensions in mm)  
(1) Package Type: SOP-8L  
Gauge Plane  
Seating Plane  
0.62/0.82  
Detail "A"  
7°~9°  
7°~9°  
0.35max.  
45°  
Detail "A"  
0°/8°  
0.3/0.5  
1.27typ  
4.85/4.95  
8x-0.60  
6x-1.27  
Land Pattern Recommendation  
(Unit: mm)  
AP2181/AP2191 Rev. 6  
DS31563  
14 of 18  
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JUNE 2009  
© Diodes Incorporated  
AP2181/AP2191  
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER  
SWITCH  
Package Information (Continued)  
(2) Package Type: MSOP-8L-EP  
EXPOSED PAD  
(BOTTOM)  
8x-0.45  
6x-0.65  
1
0.22/0.38  
0.65Bsc.  
1
Land Pattern Recommendation  
(Unit:mm)  
"A"  
0.05  
2.9/3.1  
1
EXPOSED PAD  
(BOTTOM)  
Gauge plane  
0.4/0.8  
0.95Ref.  
DETAIL "A"  
1.65/1.95  
(3) Package Type: SOT25  
AP2181/AP2191 Rev. 6  
DS31563  
15 of 18  
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JUNE 2009  
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AP2181/AP2191  
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER  
SWITCH  
Package Information (Continued)  
(4) Package Type: DFN2018-6  
0.10 C  
6X-  
0.08 C  
Seating Plane  
Side View  
C
1.75/1.875  
A
B
C
L
Pin #1 ID  
1.3/1.5  
C
L
0.30Typ  
2X-  
0.25 B  
0.50Typ  
0.15/0.25  
0.10  
C
A B  
Bottom View  
AP2181/AP2191 Rev. 6  
DS31563  
16 of 18  
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JUNE 2009  
© Diodes Incorporated  
AP2181/AP2191  
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER  
SWITCH  
Taping Orientation  
For DFN2018-6  
Notes:  
8. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf  
AP2181/AP2191 Rev. 6  
DS31563  
17 of 18  
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JUNE 2009  
© Diodes Incorporated  
AP2181/AP2191  
1.5A SINGLE CHANNEL CURRENT-LIMITED POWER  
SWITCH  
IMPORTANT NOTICE  
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS  
DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A  
PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).  
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other  
changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability  
arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any  
license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described  
herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies  
whose products are represented on Diodes Incorporated website, harmless against all damages.  
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized  
sales channel.  
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall  
indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees  
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.  
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names  
and markings noted herein may also be covered by one or more United States, international or foreign trademarks.  
LIFE SUPPORT  
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without  
the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:  
A. Life support devices or systems are devices or systems which:  
1. are intended to implant into the body, or  
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided  
in the labeling can be reasonably expected to result in significant injury to the user.  
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected  
to cause the failure of the life support device or to affect its safety or effectiveness.  
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or  
systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements  
concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems,  
notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further,  
Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes  
Incorporated products in such safety-critical, life support devices or systems.  
Copyright © 2009, Diodes Incorporated  
www.diodes.com  
AP2181/AP2191 Rev. 6  
DS31563  
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JUNE 2009  
© Diodes Incorporated  

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