AP22802 965010 SINGLE CHANNEL POWER DISTRIBUTION LOAD SWITCH ADVANCED INFORMATION Description Pin Assignments The AP22802 is a single channel current-limited integrated high-side power switch optimized for Universal Serial Bus (USB) and other hot-swap applications. The family of devices complies with USB standards and is available with both polarities of Enable input. The device has fast short-circuit response time for improved overall system robustness, and has an integrated output discharge function to ensure completely controlled discharging of the output voltage capacitor. They provide a complete protection solution for applications subject to heavy capacitive loads and the prospect of short circuit, and offer reverse current blocking, over-current, over-temperature and short-circuit protection, as well as controlled rise time and under-voltage lockout functionality. A 6ms deglitch capability on the open-drain Flag output prevents false over-current reporting and does not require any external components. The AP22802 is available in a standard Green SOT25 and RoHS compliant. Features Integrated Single Channel Load Switch Protection Over Current with Auto Recovery Short Circuit with Auto Recovery Over Temperature with Auto Recovery Small Form Factor Packages SOT25 – Footprint of just 9mm2 Thermally Efficient Low Profile Package 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 Notes: Top View OUT 1 GND 2 FLG 3 5 IN 4 EN SOT25 Applications Integrated Load Switches in Ultrabook PC’s Power Up/Down Sequencing in Ultrabook PC’s Notebook Netbook Set-Top Boxes SSD (Solid State Drives) Consumer Electronics Tablet PC Telecom Systems 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. Typical Applications Circuit Enable Active High IN Power Supply 2.7V to 5.5V 0.1μF 1μF 10k Load OUT 120μF FLG EN ON GND OFF AP22802 Document number: DS36218 Rev. 3 - 2 1 of 14 www.diodes.com August 2015 © Diodes Incorporated AP22802 965010 ADVANCED INFORMATION Pin Descriptions Pin Number Pin Name Function 1 OUT Voltage Output Pin 2 GND Ground Pin of the Circuitry 3 FLG Over Current and Over temperature fault report; Open-Drain flag is active low when triggered. Enable Input 4 EN AP22802A: Active High AP22802B: Active Low 5 IN Voltage Input Pin Functional Block Diagram Current Sense IN Discharge Control UVLO Current Limit Driver EN OUT FLG Deglitch Thermal Sense GND Absolute Maximum Ratings (@ TA = +25°C, unless otherwise specified.) (Note 4) Symbol ESD HBM ESD MM Units 2000 200 V V -0.3 to 5.7 V Output Voltage -0.3 to (VIN +0.3) V VEN Enable Voltage -0.3 to (VIN +0.3) V Load Current Internal Limited A +150 °C IL TJ(max) Input Voltage Ratings VOUT VIN Notes: Parameter Human Body ESD Protection Machine Model ESD Protection Maximum Junction Temperature TST Storage Temperature RθJA Thermal Resistance, Junction to Ambient RθJC Thermal Resistance, Junction to Case -65 to +150 °C SOT25 (Note 5) 180 °C/W SOT25 (Note 5) 50 °C/W 4. 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. 5. Test condition for SOT25: Device mounted on 1”x1” FR-4 substrate PC board, 2oz copper with minimum recommended pad layout. AP22802 Document number: DS36218 Rev. 3 - 2 2 of 14 www.diodes.com August 2015 © Diodes Incorporated AP22802 965010 Recommended Operating Conditions (Note 6) ADVANCED INFORMATION Symbol Parameter Min Max Unit V VIN Input Voltage 2.7 5.5 IOUT Output Current 0 2 A VIL EN Input Logic Low Voltage 0 0.5 V VIH EN Input Logic High Voltage 1.5 VIN V TA Operating Ambient Temperature -40 +85 C Electrical Characteristics Symbol (VIN = 5V @ TA = +25°C, CIN = 1µF, CL = 100nF, unless otherwise specified.) Parameter Test Conditions Min Typ Max 1.6 2.0 2.4 V VIN Decreasing – 75 – mV Input Shutdown Current Disabled, OUT = Open – 0.1 1 µA VUVLO Input UVLO VIN Rising ∆VUVLO Input UVLO Hysteresis ISHDN IQ Unit Input Quiescent Current Enabled, OUT = Open – 50 – µA ILEAK Input Leakage Current Disabled, OUT Grounded – 0.1 1 µA IREV Reverse Leakage Current Disabled, VIN = 0V, VOUT = 5V, IREV at VIN – 0.01 1 µA VIN = 5V, IOUT = 2.0A TA = +25°C – 50 – VIN = 3.3V, IOUT = 2.0A TA = +25°C – 60 – RDS(ON) Switch On-Resistance mΩ Over Load Current Limit VIN = 5V, VOUT = 4.5V 2.2 2.7 3.2 A ISHORT Short-Circuit Current Limit Enabled into Short Circuit – 1.1 – A tSHORT Short-Circuit Response Time VIN = 5V, No Load Figure 1 – 0.7 – µs VIL EN Input Logic Low Voltage VIN = 2.7V to 5.5V – – 0.5 V VIH EN Input Logic High Voltage VIN = 2.7V to 5.5V 1.5 – – V 0.01 1 µA ILIMIT ILEAK-EN EN Input Leakage VIN = 5V, VEN = 0V and 5.5V – ILEAK-O Output Leakage Current Disabled, VOUT = 0V – 0.5 1 µA tD(ON) Output Turn-On Delay Time CL = 4.7µF, RLOAD = 10Ω @ VIN = 3.3V Figure 2 – 1.7 – ms tR Output Turn-On Rise Time CL = 4.7µF, RLOAD = 10Ω @ VIN = 3.3V Figure 2 1.0 2.1 3.5 ms tD(OFF) Output Turn-Off Delay Time CL = 4.7µF, RLOAD = 10Ω @ VIN = 3.3V Figure 2 – 0.2 – ms Output Turn-Off Fall Time CL = 4.7µF, RLOAD = 100Ω @ VIN = 3.3V Figure 2 – 0.65 – ms RFLG FLG output FET On-Resistance IFLG = 10mA – 40 60 Ω IFOH FLG Off Current VFLG = 5V – 0.01 1 µA tBlank FLG Blanking Time Assertion or deassertion due to overcurrent and over-temperature condition 2 6 13 ms tDIS Discharge Time CL = 1µF, VIN = 5V, Disabled to VOUT < 0.5V – 0.4 – ms RDIS Discharge Resistance VIN = 5V, Disabled, IOUT = 1mA – 90 – Ω +140 – C +60 – C tF Note: TSHDN Thermal Shutdown Threshold Enabled – THYS Thermal Shutdown Hysteresis – – 6. Refer to the typical application circuit. AP22802 Document number: DS36218 Rev. 3 - 2 3 of 14 www.diodes.com August 2015 © Diodes Incorporated AP22802 965010 ADVANCED INFORMATION Performance Characteristics Figure 1. Response Time to Short Circuit Waveform VEN 50% VEN 50% tD(OFF) tR tD(ON) tD(ON) 90% VOUT tD(OFF) tR tF 90% 50% 50% tF 90% 90% VOUT 10% 10% 10% 10% Figure 2. Voltage Waveforms: AP22802B (Active Low, left), AP22802A (Active High, right) AP22802 Document number: DS36218 Rev. 3 - 2 4 of 14 www.diodes.com August 2015 © Diodes Incorporated AP22802 965010 Performance Characteristics (Cont.) (TA = +25°C, VIN = 5V, CIN = 1μF, CL = 0.1μF, unless otherwise specified.) Turn on Delay and Rise Time VIN=3.3V RLOAD=10Ω CL=4.7μF VOUT 2V/div ADVANCED INFORMATION Turn Off Delay and Fall Time VIN=3.3V RLOAD=10Ω CL=4.7μF VOUT 2V/div EN 5V/div EN 5V/div IIN 200mA/div IIN 200mA/div 1ms/div 400μs/div Turn-On Delay and Rise Time VOUT 5V/div Turn-Off Delay and Fall Time VIN=5V RLOAD=2.5Ω CL=120μF VIN=5V RLOAD=2.5Ω CL=120μF VOUT 5V/div EN 5V/div EN 5V/div IIN 2A/div IIN 2A/div 1ms/div 400μs/div Device Enabled Into Short-Circuit Inrush Current VIN=5V RLOAD=2.5Ω Active Low VIN=5V OUT grounded EN 5V/div EN 5V/div CL=470μF CL=220μF IOUT 1A/div IIN 1A/div 1ms/div AP22802 Document number: DS36218 Rev. 3 - 2 CL=120μF CL=1μF 1ms/div 5 of 14 www.diodes.com August 2015 © Diodes Incorporated AP22802 965010 Performance Characteristics (Cont.) (TA = +25°C, VIN = 5V, CIN = 1μF, CL = 0.1μF, unless otherwise specified.) Full-Load to Short-Circuit Transient Response ADVANCED INFORMATION VOUT 2V/div Output short circuited Short-Circuit to Full-Load Recovery Response VIN=5V RLOAD=2.5Ω CL=120μF Output short circuit removed VOUT 2V/div VIN=5V RLOAD=2.5Ω CL=120μF Short circuit present and device thermal cycles IIN 2A/div Device turns off and re-enables into short-circuit current limit IIN 2A/div FLG 5V/div FLG 5V/div 2ms/div No-Load to Short-Circuit Transient Response VOUT 2V/div Output short circuited 10ms/div Short-Circuit to No-Load Recovery Response VIN=5V No load CL=120μF Output short circuit removed VIN=5V No load CL=120μF VOUT 2V/div Short circuit present and device thermal cycles IIN 2A/div Device enters short-circuit current limit IIN 2A/div FLG 5V/div FLG 5V/div 2ms/div Power ON 10ms/div Short-Circuit with Blanking Time and Recovery FLG 5V/div VIN 5V/div VIN=5V RLOAD=2.5Ω CL=120μF IOUT 1A/div VIN=5V No load CL=120μF VOUT 5V/div VOUT 5V/div IOUT 2A/div FLG 5V/div 1ms/div AP22802 Document number: DS36218 Rev. 3 - 2 10ms/div 6 of 14 www.diodes.com August 2015 © Diodes Incorporated AP22802 965010 Performance Characteristics (Cont.) (TA = +25°C, VIN = 5V, CIN = 1μF, CL = 0.1μF, unless otherwise specified.) UVLO Increasing UVLO Decreasing ADVANCED INFORMATION VIN=5V RLOAD=2.5Ω CL=120μF VIN=5V RLOAD=2.5Ω CL=120μF VIN 2V/div VIN 2V/div VOUT 2V/div VOUT 2V/div 1ms/div AP22802 Document number: DS36218 Rev. 3 - 2 1ms/div 7 of 14 www.diodes.com August 2015 © Diodes Incorporated AP22802 965010 Performance Characteristics (Cont.) (TA = +25°C, VIN = 5V, CIN = 1μF, CL = 0.1μF, unless otherwise specified.) Turn-on Time vs. Input Voltage 1000 CL=4.7μF RLOAD=10Ω 1800 CL=4.7μF RLOAD=10Ω 1500 Turn-off Time (μs) Turn-on Time (μs) 800 1200 900 600 400 600 200 300 0 0 2.0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 Input Voltage (V) Input Voltage(V) Rise Time vs. Input Voltage Fall Time vs. Input Voltage 4000 1000 6.0 CL=4.7μF RLOAD=100Ω CL=4.7μF RLOAD=10Ω 3500 800 Fall Time (μs) Rise Time (μs) ADVANCED INFORMATION 2100 Turn-off Time vs. Input Voltage 3000 2500 600 400 2000 200 1500 0 1000 2.0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 Document number: DS36218 Rev. 3 - 2 3.0 3.5 4.0 4.5 5.0 5.5 6.0 Input Voltage (V) Input Voltage (V) AP22802 2.5 8 of 14 www.diodes.com August 2015 © Diodes Incorporated AP22802 965010 Performance Characteristics (Cont.) (TA = +25°C, VIN = 5V, CIN = 1μF, CL = 0.1μF, unless otherwise specified.) Supply Current vs. Temperature (Output Enabled) Supply Current vs. Temperature (Output Disabled) 1.0 Supply Current Output Disabled (µA) Supply Current Output Enabled (µA) 70 VIN=5.5V VIN=5V 60 50 40 VIN=3.3V VIN=2.7V 30 20 10 0 VIN=5.5V VIN=3.3V 0.5 VIN=5V VIN=2.7V 0.0 -0.5 -1.0 -50 -25 0 25 50 75 100 125 -50 -25 0 Temperature (℃) 25 50 75 100 125 Temperature ( ℃) RDS(ON) vs. Temperature Short-Circuit Output Current vs. Temperature 100 2.0 Short-Circuit Output Current (A) VIN=3.3V 80 RDS(ON) (mΩ) ADVANCED INFORMATION 80 VIN=2.7V VIN=5V 60 40 VIN=5.5V 20 0 1.5 2.7V 5.5V 1.0 3.3V 5V 0.5 0.0 -50 -25 0 25 50 75 100 125 -50 Temperature (℃) AP22802 Document number: DS36218 Rev. 3 - 2 -25 0 25 50 75 100 125 Temperature (°C) 9 of 14 www.diodes.com August 2015 © Diodes Incorporated AP22802 965010 Performance Characteristics (Cont.) (TA = +25°C, VIN = 5V, CIN = 1μF, CL = 0.1μF, unless otherwise specified.) Under Voltage Lockout vs. Temperature Over Load Current Limit vs. Input Voltage 3.2 Over Load Current Limit (A) 2.1 Undervoltage Lockout (V) ADVANCED INFORMATION 2.2 UVLO Rising 2.0 1.9 UVLO Falling 1.8 1.7 3.0 2.8 UVLO Rising 2.6 2.4 2.2 1.6 -50 -25 0 25 50 75 100 2.0 125 Temperature (℃) AP22802 Document number: DS36218 Rev. 3 - 2 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 Input Voltage (V) 10 of 14 www.diodes.com August 2015 © Diodes Incorporated AP22802 965010 Application Information Power Supply Considerations ADVANCED INFORMATION A 1μF X7R or X5R ceramic bypass capacitor between IN and GND, close to the device, is recommended. Placing a high-value capacitor (10μF minimum) on both input and output pins is recommended when the output transient load is heavy. This precaution reduces power-supply transients that may cause ringing on the input. Additionally, bypassing the output with a 0.01μF to 0.1μF ceramic capacitor improves the immunity of the device to short-circuit transients. FLG Response When an over-current or over-temperature shutdown condition is encountered, the FLG open-drain output goes active low after a nominal 6ms 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 6ms deglitch timeout. The AP22802 is designed to eliminate false over-current reporting without the need of external components to remove unwanted pulses. 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 AP22802 senses the short circuit and immediately clamps output current to a certain safe level. 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, the device switches into current limiting mode and the current is clamped at ILIMIT, or ISHORT. 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 AP22802 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. Thermal Protection Thermal protection prevents the IC from damage when heavy-overload or short-circuit faults are present for extended periods of time. The AP22802 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 +60°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 6ms deglitch. ON/OFF Input Operator The EN input allows the output current to be switched on and off using a GPIO compatible input. The high signal (switch on) should be at least 1.5V, and the low signal (switch off) no higher than 0.5V. This pin should NOT be left floating. It is advisable to hold the EN signal low when applying or removing power. 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 2V, even if the switch is enabled. Whenever the input voltage falls below approximately 2V, 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. Discharge Function The discharge function of the device is active when enable is disabled or de-asserted. The discharge function with the N-MOS power switch implementation is activated and offers a resistive discharge path for the external storage capacitor. This is designed for discharging any residue of the output voltage when either no external output resistance or load resistance is present at the output. AP22802 Document number: DS36218 Rev. 3 - 2 11 of 14 www.diodes.com August 2015 © Diodes Incorporated AP22802 965010 Application Information (Cont.) Power Dissipation and Junction Temperature Finally, calculate the junction temperature: TJ = PD x RθJA + TA Where: TA = Ambient temperature °C RθJA = Thermal resistance PD = Total power dissipation Ordering Information AP22802X XX - 7 Enable Package Packing A : Active High B : Active Low W5 : SOT25 -7 : Tape & Reel Part Number Package Code Packaging AP22802AW5-7 AP22802BW5-7 W5 W5 SOT25 SOT25 Quantity 3000/Tape & Reel 3000/Tape & Reel 13” Tape and Reel Part Number Suffix -7 -7 Marking Information ( Top View ) 5 4 7 ADVANCED INFORMATION 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 XX Y W X 1 2 Part Number AP22802AW5-7 AP22802BW5-7 AP22802 Document number: DS36218 Rev. 3 - 2 3 XX : Identification code Y : Year 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : A~Z : Green Package Type SOT25 SOT25 12 of 14 www.diodes.com Identification Code XA XB August 2015 © Diodes Incorporated AP22802 965010 Package Outline Dimensions (All dimensions in mm.) Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version. ADVANCED INFORMATION A SOT25 Dim Min Max Typ A 0.35 0.50 0.38 B 1.50 1.70 1.60 C 2.70 3.00 2.80 D 0.95 H 2.90 3.10 3.00 J 0.013 0.10 0.05 K 1.00 1.30 1.10 L 0.35 0.55 0.40 M 0.10 0.20 0.15 N 0.70 0.80 0.75 0° 8° All Dimensions in mm B C H K M N J L D Suggested Pad Layout Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version C2 Z C2 Dimensions Value (in mm) Z 3.20 G 1.60 X 0.55 Y 0.80 C1 G C1 Y C2 2.40 0.95 X AP22802 Document number: DS36218 Rev. 3 - 2 13 of 14 www.diodes.com August 2015 © Diodes Incorporated AP22802 965010 IMPORTANT NOTICE ADVANCED INFORMATION 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. This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the final and determinative format released by Diodes Incorporated. 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 © 2015, Diodes Incorporated www.diodes.com AP22802 Document number: DS36218 Rev. 3 - 2 14 of 14 www.diodes.com August 2015 © Diodes Incorporated