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AP2182/AP2192
1.5A DUAL CHANNEL CURRENT-LIMITED POWER SWITCH
Features
* * * * * * * * * * * * * * * * Dual USB port power switches Over-current and thermal protection 2.1A accurate current limiting Reverse Current Blocking 115m 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: 4.5KV HBM, 350V MM Active high (AP2192) or active low (AP2182) enable Ambient temperature range: -40C to 85C SOP-8L and MSOP-8L-EP (Exposed Pad): 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 AP2182 and AP2192 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 and MSOP-8L-EP packages.
Applications
* * * Consumer electronics - LCD TV & Monitor, Game Machines Communications - Set-Top-Box, GPS, Smartphone Computing - Laptop, Desktop, Servers, Printers, Docking Station, HUB
Ordering Information
AP 21 X 2 XX G - 13
Enable 8 : Active Low 9 : Active High Channel 2 : 2 Channel Package S : SOP-8L MP : MSOP-8L-EP Green G : Green Packing 13 : Tape & Reel
Device AP21X2SG-13 AP21X2MPG-13
Notes:
Package Code S MP
Packaging (Note 2) SOP-8L MSOP-8L-EP
13" Tape and Reel Quantity Part Number Suffix 2500/Tape & Reel -13 2500/Tape & Reel -13
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.
AP2182/AP2192 Rev. 6
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AP2182/AP2192
1.5A DUAL CHANNEL CURRENT-LIMITED POWER SWITCH
Pin Assignment
( Top View )
( Top View )
GND IN
1 2
8 7 6 5
FLG1
GND
1 2 3 4 8 7 6 5
FLG1 OUT1 OUT2 FLG2
OUT1 OUT2 FLG2
IN EN1 EN2
EN1 3 EN2 4
MSOP-8L-EP
SOP-8L
Pin Descriptions
Pin Number 1 2 3 4 5 6 7 8 Ground Voltage input pin Switch 1 enable input, active low (AP2182) or active high (AP2192) Switch 2 enable input, active low (AP2182) or active high (AP2192) Switch 2 over-current and over-temperature fault report; open-drain flag is active low when triggered Switch 2 voltage output pin Switch 1 voltage output pin Switch 1 over-current and over-temperature fault report; open-drain flag is active low when triggered
Pin Name GND IN EN1 EN2 FLG2 OUT2 OUT1 FLG1
Descriptions
AP2182/AP2192 Rev. 6
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AP2182/AP2192
1.5A DUAL CHANNEL CURRENT-LIMITED POWER SWITCH
Functional Block Diagram
AP2182, AP2192
T h e rm a l Sense FLG 1
D e g litc h EN1 D riv e r U V LO C u rre n t S ense C u rre n t L im it GND
OUT1
IN
C u rre n t S ense
OUT2
UVLO D riv e r C u rre n t L im it D e g litc h
FLG 2
EN2
T h e rm a l S ense
GND
Typical Application Circuit
AP2192 Enable Active High
Power Supply 2.7V to 5.5V
10k 10k 10uF 0.1uF FLG1 FLG2 ON OFF EN1 EN2 GND OUT2 0.1uF 68uF IN OUT1 0.1uF 68uF
Load
Load
Available Options Part Number AP2182 AP2192 Channel 2 2 Enable pin (EN) Active Low Active High Current limit (typical) 2.1A 2.1A Recommended maximum continuous load current 1.5A 1.5A
AP2182/AP2192 Rev. 6
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AP2182/AP2192
1.5A DUAL CHANNEL CURRENT-LIMITED POWER SWITCH
Absolute Maximum Ratings
Symbol ESD HBM ESD MM VIN VOUT VEN , VFLG Iload TJmax TST
Notes:
Parameter Human Body Model ESD Protection Machine Model ESD Protection Input Voltage Output Voltage Enable Voltage Maximum Continuous Load Current Maximum Junction Temperature Storage Temperature Range (Note 3)
Ratings 3 300 6.5 VIN + 0.3 6.5 Internal Limited 150 -65 to 150
Units KV V V V V A C C
3. UL Recognized Rating from -30C to 70C (Diodes qualified TST from -65C to 150C)
Recommended Operating Conditions
Symbol VIN IOUT TA Parameter Input voltage Output Current Operating Ambient Temperature Min 2.7 0 -40 Max 5.5 1.5 85 Units V A C
AP2182/AP2192 Rev. 6
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AP2182/AP2192
1.5A DUAL CHANNEL CURRENT-LIMITED POWER SWITCH
Electrical Characteristics
(TA = 25oC, VIN = +5.0V, unless otherwise stated)
Symbol VUVLO ISHDN IQ ILEAK IREV RDS(ON) Test Conditions Rload=1k Disabled, IOUT= 0 Enabled, IOUT= 0 Disabled, OUT grounded Disabled, VIN = 0V, VOUT = 5V, IREV at VIN MSOP-8L-EP, -40oC TA 85oC VIN = 5V, IOUT= 0.5A SOP-8L, -40oC TA 85oC Switch on-resistance VIN = 3.3V, -40oC TA 85oC IOUT= 0.5A Short-circuit current limit Enabled into short circuit, CL=68F VIN = 5V, VOUT = 4.5V, -40oC TA 85oC Over-Load Current Limit CL=68F VIN = VEN, Output Current Slew rate (<100A/s), Current limiting trigger threshold CL=68F EN Input Logic Low Voltage VIN = 2.7V to 5.5V EN Input Logic High Voltage VIN = 2.7V to 5.5V EN Input leakage VEN = 5V Output turn-on delay time CL=1F, Rload=10 Output turn-on rise time CL=1F, Rload=10 Output turn-off delay time CL=1F, Rload=10 Output turn-off fall time CL=1F, Rload=10 FLG output FET on-resistance IFLG =10mA FLG blanking time CIN=10F, CL=68F Thermal shutdown threshold Enabled, Rload=1k Thermal shutdown hysteresis Thermal Resistance Junction-to-Ambient SOP-8L (Note 4) MSOP-8L-EP (Note 5) Parameter Input UVLO Input Shutdown Current Input Quiescent Current, Dual Input Leakage Current Reverse Leakage Current Min 1.6 Typ. 1.9 0.5 100 1 115 120 140 2.0 1.6 2.1 3.0 0.8 2 1 0.05 0.6 0.01 0.05 30 7 140 25 110 60 1.5 0.1 50 15 2.6 Max 2.5 1 160 1 150 160 180 Unit V A A A A m m m A A A V V A ms ms ms ms ms C C
o o
ISHORT ILIMIT ITrig VIL VIH ISINK TD(ON) TR TD(OFF) TF RFLG TBlank TSHDN THYS JA
Notes:
4
C/W C/W
4. Test condition for SOP-8L: Device mounted on FR-4 2-layer board, 2oz copper, with minimum recommended pad layout. 5. Test condition for MSOP-8L-EP: Device mounted on FR-4 2-layer board, 2oz copper, with minimum recommended pad on top layer and 3 vias to bottom layer ground plane.
AP2182/AP2192 Rev. 6
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AP2182/AP2192
1.5A DUAL CHANNEL CURRENT-LIMITED POWER SWITCH
Typical Performance Characteristics
VEN
50%
50%
VEN TD(OFF) TF
50%
50%
TR TD(ON) VOUT
10% 90%
TR TD(ON) VOUT
10% 90%
TD(OFF) TF
90% 10%
CL=1uF TA=25C RL=5
90% 10%
Figure 1. Voltage Waveforms: AP2182 (left), AP2192 (right)
All Enable Plots are for AP2192 Active High Channel 1 Turn-On Delay and Rise Time Channel 1 Turn-Off Delay and Fall Time
Ven 1 5V/div
Ven 1 5V/div
Vout 1 2V/div Vout 1 2V/div CL=1uF TA=25C RL=5
CL=1uF TA=25C RL=5
400us/div
400us/div
Channel 2 Turn-On Delay and Rise Time
Channel 2 Turn-Off Delay and Fall Time
Ven 2 5V/div
Ven 2 5V/div
CL=1uF Vout 2 2V/div Vout 2 2V/div CL=1uF TA=25C RL=5 TA=25C RL=5
400us/div
400us/div
AP2182/AP2192 Rev. 6
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AP2182/AP2192
1.5A DUAL CHANNEL CURRENT-LIMITED POWER SWITCH
Typical Performance Characteristics
(Continued)
Channel 1 Turn-On Delay and Rise Time
Channel 1 Turn-Off Delay and Fall Time
Ven 2 5V/div
Ven 2 5V/div
CL=100uF Vout 2 2V/div CL=100uF TA=25C RL=5 Vout 2 2V/div TA=25C RL=5
400us/div Channel 2 Turn-On Delay and Rise Time
400us/div Channel 2 Turn-Off Delay and Fall Time
Ven 2 5V/div
Ven 2 5V/div
CL=100uF Vout 2 2V/div CL=100uF TA=25C RL=5 Vout 2 2V/div TA=25C RL=5
400us/div Channel 1 Short Circuit Current, Device Enabled Into Short
Ven 1 5V/div Ven 2 5V/div
400us/div Channel 2 Short Circuit Current, Device Enabled Into Short
Iout 1 500mA/div VIN=5V TA=25C CL=68uF
Iout 2 500mA/div VIN=5V TA=25C CL=68uF
500us/div
500us/div
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1.5A DUAL CHANNEL CURRENT-LIMITED POWER SWITCH
Typical Performance Characteristics
Channel 1 Inrush Current
Ven 1 5V/div CL=100uF CL=470uF VIN=5V TA=25C RL=3.3
(Continued)
Channel 2 Inrush Current
Ven 2 5V/div CL=100uF CL=470uF VIN=5V TA=25C RL=3.3
Iout 1 500mA/div
Iout 2 500mA/div
CL=220uF
CL=220uF
1ms/div Channel 1 0.6 Load Connected to Enabled Device
VIN=5V TA=25C Vflag 1 2V/div CL=68uF Vflag 2 2V/div
1ms/div Channel 2 0.6 Load Connected to Enabled Device
VIN=5V TA=25C CL=68uF
Iout 1 1A/div
Iout 2 1A/div
2ms/div Channel 1 Short Circuit with Blanking Time and Recovery
Vout 1 5V/div Vflag 1 5V/div
2ms/div Channel 2 Short Circuit with Blanking Time and Recovery
Vout 2 5V/div Vflag 2 5V/div
VIN=5V TA=25C CL=68uF
VIN=5V TA=25C CL=68uF
Iout 1 2A/div
Iout 2 2A/div
20ms/div
20ms/div
AP2182/AP2192 Rev. 6
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AP2182/AP2192
1.5A DUAL CHANNEL CURRENT-LIMITED POWER SWITCH
Typical Performance Characteristics
Channel 1 Power On
Vflag 1 5V/div
(Continued)
Channel 2 Power On
Vflag 2 5V/div
TA=25C CL=68uF Iout 1 500mA/div Ven 1 5V/div Vin 5V/div RL=3 Iout 2 500mA/div Ven 2 5V/div Vin 5V/div
TA=25C CL=68uF RL=3
1ms/div Channel 1 UVLO Increasing
1ms/div Channel 1 UVLO Decreasing
TA=25C CL=68uF Vin 2V/div RL=3
Vin 2V/div
TA=25C Iout 1 500mA/div CL=68uF RL=3 Iout 1 500mA/div
1ms/div Channel 2 UVLO Increasing
10ms/div Channel 2 UVLO Decreasing
TA=25C
Vin 2V/div
Vin 2V/div
CL=68uF RL=3
Iout 500mA/div
TA=25C CL=68uF RL=3
Iout 500mA/div
1ms/div
10ms/div
AP2182/AP2192 Rev. 6
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AP2182/AP2192
1.5A DUAL CHANNEL CURRENT-LIMITED POWER SWITCH
Typical Performance Characteristics
Channel 1 Enabled and Shorted with Channel 2 Disabled
Vout 1 5V/div
(Continued)
Channel 1 Disabled and Channel 2 Enabled
Ven1 5V/div Vout 1 5V/div
Vout 2 5V/div
Vflag 1 5V/div
TA=25C CL=68uF
Ven2 5V/div
TA=25C CL=68uF
Iout 2 500mA/div
Vout 2 5V/div
100ms/div
Turn-On Time vs Input Voltage
850
55
50ms/div
Turn-Off Time vs Input Voltage
750
50
CL=1uF RL=10 TA=25C
Turn-On Time (us)
Turn-Off Time (us)
650
45
550
40
450
35
CL=1uF
350
RL=10 TA=25C
30
250 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
25 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
650 600 550 25
Fall Time vs Input Voltage
24
Rise Time (us)
500 450 400 350 300 2 2.5 3 3.5 4 4.5 5 5.5 6
Fall Time (us)
23
22
CL=1uF RL=10 TA=25C
21
CL=1uF RL=10 TA=25C
20
19 2 2.5 3 3.5 4 4.5 5 5.5 6
Input Voltage (V)
Input Voltage (V)
AP2182/AP2192 Rev. 6
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1.5A DUAL CHANNEL CURRENT-LIMITED POWER SWITCH
Typical Performance Characteristics
Supply Current, Output Enabled vs Ambient Temperature
52
0.9
Supply Current, Output Disabled vs Ambient Temperature
Supply Current, Output Disabled (uA)
Supply Current, Output Enabled (uA)
Vin=5.5V
0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0
Vin=5.0V
47
Vin=5.0V Vin=5.5V
42
Vin=3.3V
37
Vin=2.7V
32
Vin=3.3V
27 -60 -40 -20 0 20 40 60 80 100
Vin=2.7V
-60
-40
-20
0
20
40
60
80
100
Ambient Temperature (C)
Ambient Temperature (C)
Static Drain-Source On-State Resistance vs Ambient Temperature
2.60
Short-Circuit Output Current vs Ambient Temperature
180
Static Drain-Source On-State Resistance (m)
170 160 150 140 130 120 110 100 90 80 -60 -40 -20
Vin=2.7V
Short-Circuit Output Current (A)
2.50
CL=100uF Vin=2.7V Vin=3.3V Vin=5.0V
2.40
Vin=3.3V
2.30
2.20
Vin=5V
2.10
Vin=5.5V
2.00
0
20
40
60
80
100
-60
-40
-20
0
20
40
60
80
100
Ambient Temperature (C)
Ambient Temperature (C)
Undervoltage Lockout vs Ambient Temperature
2.15
3.24 3.22
Threshold Trip Current vs Input Voltage
Undervoltage Lockout (V)
2.10
UVLO Rising
Threshold Trip Current (A)
3.20 3.18 3.16 3.14 3.12 3.10
2.05
2.00
TA=25C CL=68uF
UVLO Falling
1.95
1.90 -60 -40 -20 0 20 40 60 80 100
3.08 2.8 3.3 3.8 4.3 4.8 5.3
Ambient Temperature (C)
Input Voltage (V)
AP2182/AP2192 Rev. 6
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1.5A DUAL CHANNEL CURRENT-LIMITED POWER SWITCH
Typical Performance Characteristics
Current Limit Response vs Peak Current
45 40
Current Limit Response (us)
35 30 25 20 15 10 5 0 0 2 4 6 8 10 12
VIN=5V TA=25C CL=68uF
Peak Current (A)
AP2182/AP2192 Rev. 6
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1.5A DUAL CHANNEL CURRENT-LIMITED POWER SWITCH
Application Note
Power Supply Considerations
A 0.01-F to 0.1-F 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 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-F to 0.1-F 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 AP2182/AP2192 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 AP2182/AP2192 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.
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 AP2182/AP2192 is designed to eliminate false over-current reporting without the need of external components to remove unwanted pulses.
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)x I2 Finally, calculate the junction temperature: TJ = PD x RJA + TA Where: TA= Ambient temperature C RJA = Thermal resistance PD = Total power dissipation
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1.5A DUAL CHANNEL CURRENT-LIMITED POWER SWITCH
Application Note
Thermal Protection
(Continued)
Thermal protection prevents the IC from damage when heavy-overload or short-circuit faults are present for extended periods of time. The AP2182/AP2192 implements a thermal sensing to monitor the operating junction temperature of the power distribution switch. Once the die temperature rises to approximately 140C 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 25C 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 Two-Port USB Host / Self-Powered Hub
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 AP2182/AP2192, 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 AP2182/AP2192 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 AP2182/AP2192 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.
AP2182/AP2192 Rev. 6
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1.5A DUAL CHANNEL CURRENT-LIMITED POWER SWITCH
Marking Information
(1) SOP-8L
( Top view ) 8 Logo Part Number 8 : Active Low 9 : Active High 7 6 5 2 : 2 Channel G : Green YY : Year : 08, 09,10~ WW : Week : 01~52; 52 represents 52 and 53 week X : Internal Code 4
AP21X X
YY WW X X
1
2
3
(2) MSOP-8L-EP
( Top view ) 8 Logo Part Number 8 : Active Low 9 : Active High 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 2 : 2 Channel
YWXE
AP21X X
2 3 4
AP2182/AP2192 Rev. 6
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1.5A DUAL CHANNEL CURRENT-LIMITED POWER SWITCH
Package Information
(1) Package type: SOP-8L
( All Dimensions in mm )
3.85/3.95
5.90/6.10
0.10/0.20
0.254 0.62/0.82
Gauge Plane Seating Plane
Detail "A"
7~9 1.30/1.50 1.75max. 0.15/0.25
0.35max. 45
7~9
Detail "A"
0/8
1.27typ 4.85/4.95
0.3/0.5
8x-0.60 5.4 6x-1.27 8x-1.55
Land Pattern Recommendation (Unit: mm)
(2) Package type: MSOP-8L-EP
8x-0.45 2.9/3.1 4.7/5.1 4.4 6x-0.65 1 0.75/0.95 1.10Max. 0.15Typ. 0.65Bsc. 0.22/0.38 8x-1.4 1
EXPOSED PAD (BOTTOM)
Land Pattern Recommendation (Unit:mm) "A"
1
EXPOSED PAD (BOTTOM) 0.05/0.15 0.4/0.8 0.95Ref. DETAIL "A"
0.25 Gauge plane
0/8
0.05 2.9/3.1
1.65/1.95
1.35/1.65
AP2182/AP2192 Rev. 6
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1.5A DUAL CHANNEL CURRENT-LIMITED POWER SWITCH
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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 (c) 2010, Diodes Incorporated www.diodes.com
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