AAT4625 USB Single-Channel Power Switch Features The AAT4625 SmartSwitch™ is part of AnalogicTech's Application Specific Power MOSFET™ (ASPM™) product family. It is a 1.0A Current Limited P-channel, MOSFET power switch designed for high-side load-switching applications. This switch operates with inputs ranging from 2.7V to 5.5V, making it ideal for both 3V and 5V systems. An integrated current-limiting circuit protects the input supply against large changes in load current which may cause the supply to fall out of regulation. The AAT4625 is also protected from thermal overload which limits power dissipation and junction temperatures. The current limit threshold is factory programmed at 1.5A, with a maximum of 2.0A. The quiescent supply current is typically a low 16µA. In shutdown mode, the supply current decreases to less than 1µA. • • • • • • The AAT4625 is available in 8 pin SOP or TSSOP and is specified over a -40 to 85°C temperature range. Applications • • • • • • • • • • The AAT4600 Series is a family of adjustable and fixed SmartSwitch™ products with a range of current handling capabilities. Single versions with adjustable current limit (AAT4601) or fixed current limit (AAT4625) as well as dual versions with fixed current limit (AAT4626) are available. SmartSwitch™ Compliant with USB 1.1 and 2.0 specifications 2.7V to 5.5V Input voltage range 1.0A minimum continuous current 2.0A maximum current limit 60mΩ typical R DS(ON) Low quiescent current • Typically 16µA • 1µA max with Switch off Thermal shutdown Fault flag with 10ms blanking Undervoltage Lockout Temp range -40 to 85°C UL Approved—File No. E217765 8 pin SOP or TSSOP package USB ports and peripherals Notebook computers Hot swap supplies General purpose power switching UL Recognized Component Typical Application VCC 5.0V 7 IN AAT4625 100k 2 EN (EN) OUT 1 OUT FLG EN (EN) 6 OUTPUT 8 120µF 0.1µF 3 GND 4625.2002.1.0.93 GND 1 Preliminary Information General Description AAT4625 USB Single-Channel Power Switch Pin Descriptions Pin # Symbol Function 1 EN (EN) Enable Input: Logic-compatible enable input. High input > 2.1V typical. Low input < 1.9V typical. Active high or active low option available; see Ordering Information for details. 2 FLG Fault Flag Output: Active-low, open-drain output. Indicates over current, UVLO and thermal shutdown. 3 GND Ground connection 4,5 NC 6,8 OUT Switch Output: These pins are the P-channel MOSFET drain connection. 7 IN Supply Input: This pin is the P-channel MOSFET source connection. Also supplies the IC's internal circuitry. Not internally connected. Pin Configuration SOP-8 (Top View) EN (EN) FLG GND NC 1 2 8 7 2 OUT IN OUT NC 1 2 2 FLG GND NC 1 EN (EN) TSSOP-8 (Top View) 3 6 4 5 OUT IN OUT NC 4625.2002.1.0.93 AAT4625 USB Single-Channel Power Switch Absolute Maximum Ratings Symbol VIN VFLG IFLG VOUT IOUT VEN TS TLEAD (TA=25°C unless otherwise noted) Description IN to GND FLG to GND FLG Current OUT to GND Output Current (Internally Limited) EN to GND Storage Temperature Maximum Soldering Temperature (at Leads) Value Units -0.3 to 6 -0.3 to 6 50 -0.3 to VIN+0.3 2.0 -0.3 to 6 150 300 V V mA V A V °C °C Note: Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions specified is not implied. Only one Absolute Maximum rating should be applied at any one time. Thermal Information Symbol ΘJA PD Description 1 Maximum Thermal Resistance (SOP-8) Maximum Power Dissipation (SOP-8)1 Value Units 100 1.25 °C/W W Note 1: Mounted on an FR4 printed circuit board. Electrical Characteristics (VIN = 5V, TA = -40 to 85°C unless otherwise noted. Typical values are at TA=25°C; bold values designate full temperature range) Symbol VIN IQ IQ(OFF) VEN-THRSH IEN CEN Rds(ON) TON TON-RISE TOFF TOFF-FALL ISD(OFF) ILIMIT Description Operation Voltage Quiescent Current Off Supply Current Enable Input Threshold Enable Input Current Enable Input Capacitance On-Resistance Output Turn-On Delay Output Turn-On Rise Time Output Turn-Off Delay Output Turn-Off Fall Time Output Leakage Current Current Limit Threshold OTMP Over Temperature Shut Down RFLG ISINK VUVLO TBLANK Error Flag Output Resistance Error Flag Off Current Under voltage Lockout FAULT blanking 4625.2002.1.0.93 Conditions Min Typ 2.7 VIN=5V, EN=active VIN=5.5V, EN (EN)=inactive Low-to-high transition High-to-low transition VEN = 0V to 5.5V VIN =5V, TA = 25°C VIN =3.0V, TA = 25°C VIN =5V, RL=10Ω VIN =5V, RL=10Ω VIN =5V, RL=10Ω VIN =5V, RL=10Ω EN=inactive, VIN=5.5V, VOUT=0V ramped load applied to enable output, VOUT < 4.0V TJ increasing TJ decreasing VIN =5V, IL = 1mA VFLG = 5.5V VIN = increasing, 1% hysteresis 16 Max Units 5.5 30 1 2.4 V µA µA V V µA pF mΩ mΩ ms ms µs µs µA A 0.8 0.01 1 60 70 0.25 0.2 5 1.0 2.0 0.03 1.5 125 115 30 0.05 2.3 10 1 100 115 20 20 15 2.0 1 2.7 °C °C Ω µA V ms 3 AAT4625 USB Single-Channel Power Switch Typical Characteristics (Unless otherwise noted, VIN = 5V, TA = 25°C) Quiescent Current 30 20 18 25 16 Input (µA) Quiescent Current (µA) Quiescent Current vs. Temperature 20 15 10 14 12 10 8 6 4 5 2 0 0 -40 -20 0 20 40 60 80 100 120 0 1 2 3 Temperature (°C) 5 6 Input (V) Off-Supply Current vs. Temperature Current Limit 1.0000 Off-Supply Current (µA) 1.8 1.6 Output (A) 4 1.4 1.2 1 0.8 0.6 0.4 0.2 0 0 1 2 3 4 5 0.1000 0.0100 0.0010 -40 Output (V) -20 0 20 40 60 80 100 120 Temperature (°C) Off-Switch Current vs. Temperature Turn-ON/OFF Response with 10 Ohm 1µF load Off-Switch Current (µA) 1.0000 0.1000 EN (5V/div) 0.0100 FAULT 0.0010 Vout (2V/div) 0.0001 Iin (200mA/div) 0.0000 -40 -20 0 20 40 60 80 100 120 µ 4 4625.2002.1.0.93 AAT4625 USB Single-Channel Power Switch (Unless otherwise noted, VIN = 5V, TA = 25°C) Start Into 1 Ohm load Thermal Shutdown Response EN (5V/div) EN (5V/div) FAULT (5V/div) FAULT (5V/div) Vout (1V/div) Vout (1V/div) Iin (500mA/div) Iin (500mA/div) 1ms/div 50ms / div Short Circuit Through 0.3 Ohm Short Circuit Through 0.6 Ohm 8 Input Voltage 4 4 Output Current 2 0 Output Voltage 0 -4 -1 0 1 2 3 4 5 Input and Output (V) 6 8 9 6 Input Voltage 6 4 Output Current 3 2 Output Voltage 0 0 Output (A) 12 Output (A) Input and Output (V) 8 -3 -1 0 1 2 3 4 5 Time (µs) Time (µs) Rds(ON) vs. Temperature 80.0 75.0 70.0 65.0 VCC=3V 60.0 55.0 VCC=5V 50.0 45.0 40.0 -40 -20 0 20 40 60 80 100 120 Temperature (°C) 4625.2002.1.0.93 5 AAT4625 USB Single-Channel Power Switch Functional Block Diagram IN OUT Undervoltage Lockout Over-Temp Protection FLG EN (EN) 1.2V Reference Current Limit GND 6 4625.2002.1.0.93 AAT4625 USB Single-Channel Power Switch Ordering Information Package Enable SOP8 Part Number Marking Bulk Tape and Reel EN (Active-high) AAT4625IAS-1-B1 AAT4625IAS-1-T1 SOP8 EN (Active-low) AAT4625IAS-B1 AAT4625IAS-T1 TSSOP8 EN (Active-high) AAT4625IHS-1-B1 AAT4625IHS-1-T1 TSSOP8 EN (Active-low) AAT4625IHS-B1 AAT4625IHS-T1 Package Information SOP-8 Dim A A1 A2 B C D E e H L Y θ1 E H 1 2 D 7 (4x) A c A2 Q b y 4625.2002.1.0.93 e A1 L Millimeters Min Max 1.35 1.75 0.10 0.25 1.45 0.33 0.51 0.19 0.25 4.80 5.00 3.80 4.00 1.27 5.80 6.20 0.40 1.27 0.00 0.10 0° 8° Inches Min Max 0.053 0.069 0.004 0.010 0.057 0.013 0.020 0.007 0.010 0.189 0.197 0.150 0.157 0.050 0.228 0.244 0.016 0.050 0.000 0.004 0° 8° Note: 1. PACKAGE BODY SIZES EXCLUDE MOLD FLASH PROTRUSIONS OR GATE BURRS. 2. TOLERANCE 0.1000mm (4mil) UNLESS OTHERWISE SPECIFIED 3. COPLANARITY: 0.1000mm 4. DIMENSION L IS MEASURED IN GAGE PLANE. 5. CONTROLLING DIMENSION IS MILLIMETER; CONVERTED INCH DIMENSIONS ARE NOT NECESSARILY EXACT. 7 AAT4625 USB Single-Channel Power Switch TSSOP-8 Dim E 1 DETAIL A E1 2 D E 0.20 e A A1 A2 b c D-8 D-28 E E1 e L L1 R R1 θ1 θ2 Millimeters Min Max 1.05 1.20 0.05 0.15 1.05 0.25 0.30 0.127 2.90 3.10 9.60 9.80 4.30 4.50 6.20 6.60 0.65 BSC 0.50 0.70 1.0 0.09 0.09 0° 8° Inches Min Max 0.041 0.047 0.002 0.006 0.041 0.010 0.012 0.005 0.114 0.122 0.378 0.386 0.170 0.177 0.244 0.260 0.025 BSC 0.20 0.028 0.039 0.004 0.004 0° 8° 12° R1 A2 A R 1 b A1 L DETAIL A 2 L1 Advanced Analogic Technologies, Inc. 1250 Oakmead Parkway, Suite 310, Sunnyvale, CA 94086 Phone (408) 524-9684 Fax (408) 524-9689 8 4625.2002.1.0.93