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| AAT4625 USB Single-Channel Power Switch General Description The AAT4625 SmartSwitchTM is part of AnalogicTech's Application Specific Power MOSFETTM (ASPMTM) 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 16A. In shutdown mode, the supply current decreases to less than 1A. The AAT4625 is available in 8 pin SOP or TSSOP and is specified over a -40 to 85C temperature range. The AAT4600 Series is a family of adjustable and fixed SmartSwitchTM 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. Features * * * * * * SmartSwitchTM * * * * * * 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 60m typical R DS(ON) Low quiescent current * Typically 16A * 1A max with Switch off Thermal shutdown Fault flag with 10ms blanking Undervoltage Lockout Temp range -40 to 85C UL Approved--File No. E217765 8 pin SOP or TSSOP package Preliminary Information Applications * * * * USB ports and peripherals Notebook computers Hot swap supplies General purpose power switching UL Recognized Component Typical Application VCC 5.0V 100k 2 1 7 6 IN OUTPUT OUT AAT4625 FLG EN (EN) 3 OUT 8 EN (EN) 0.1F 120F GND GND 4625.2002.1.0.93 1 AAT4625 USB Single-Channel Power Switch Pin Descriptions Pin # 1 Symbol EN (EN) Function 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. Fault Flag Output: Active-low, open-drain output. Indicates over current, UVLO and thermal shutdown. Ground connection Not internally connected. Switch Output: These pins are the P-channel MOSFET drain connection. Supply Input: This pin is the P-channel MOSFET source connection. Also supplies the IC's internal circuitry. 2 3 4,5 6,8 7 FLG GND NC OUT IN Pin Configuration SOP-8 (Top View) TSSOP-8 (Top View) EN (EN) FLG GND NC OUT IN OUT NC EN (EN) FLG GND NC 1 2 8 7 3 4 6 5 OUT IN OUT NC 1 1 2 2 2 4625.2002.1.0.93 AAT4625 USB Single-Channel Power Switch Absolute Maximum Ratings Symbol VIN VFLG IFLG VOUT IOUT VEN TS TLEAD (TA=25C unless otherwise noted) Value -0.3 to 6 -0.3 to 6 50 -0.3 to VIN+0.3 2.0 -0.3 to 6 150 300 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) Units 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 JA PD Description Maximum Thermal Resistance (SOP-8) Maximum Power Dissipation (SOP-8)1 1 Value 100 1.25 Units C/W W Note 1: Mounted on an FR4 printed circuit board. (VIN = 5V, TA = -40 to 85C unless otherwise noted. Typical values are at TA=25C; 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 OTMP RFLG ISINK VUVLO TBLANK 4625.2002.1.0.93 Electrical Characteristics 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 Conditions 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 = 25C VIN =3.0V, TA = 25C VIN =5V, RL=10 VIN =5V, RL=10 VIN =5V, RL=10 VIN =5V, RL=10 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 Min 2.7 Typ 16 Max 5.5 30 1 2.4 1 100 115 Units V A A V V A pF m m ms ms s s A A C C A V ms 0.8 0.01 1 60 70 0.25 0.2 5 0.03 1.5 125 115 30 0.05 2.3 10 1.0 20 20 15 2.0 Over Temperature Shut Down Error Flag Output Resistance Error Flag Off Current Under voltage Lockout FAULT blanking 2.0 1 2.7 3 AAT4625 USB Single-Channel Power Switch Typical Characteristics (Unless otherwise noted, VIN = 5V, TA = 25C) Quiescent Current vs. Temperature Quiescent Current (A) 30 25 20 15 10 5 0 -40 -20 0 20 40 60 80 100 120 20 18 16 Quiescent Current Input (A) 14 12 10 8 6 4 2 0 0 1 2 3 4 5 6 Temperature (C) Input (V) Current Limit 1.8 1.6 Off-Supply Current vs. Temperature 1.0000 Output (A) 1.4 1.2 1 0.8 0.6 0.4 0.2 0 0 1 2 3 4 5 Off-Supply Current (A) 0.1000 0.0100 0.0010 -40 -20 0 20 40 60 80 100 120 Output (V) Temperature (C) Off-Switch Current vs. Temperature 1.0000 Turn-ON/OFF Response with 10 Ohm 1F load Off-Switch Current (A) 0.1000 EN (5V/div) 0.0100 0.0010 FAULT Vout (2V/div) 0.0001 0.0000 -40 -20 0 20 40 60 80 100 120 Iin (200mA/div) 4 4625.2002.1.0.93 AAT4625 USB Single-Channel Power Switch (Unless otherwise noted, VIN = 5V, TA = 25C) Start Into 1 Ohm load Thermal Shutdown Response EN (5V/div) EN (5V/div) FAULT (5V/div) Vout (1V/div) Iin (500mA/div) 50ms / div FAULT (5V/div) Vout (1V/div) Iin (500mA/div) 1ms/div Short Circuit Through 0.3 Ohm 8 12 8 Short Circuit Through 0.6 Ohm 9 Input and Output (V) Input and Output (V) Output (A) 4 Output Current Output Voltage 4 4 Output Current Output Voltage 3 2 0 2 0 0 -1 0 1 2 3 4 5 -4 0 -1 0 1 2 3 4 5 -3 Time (s) Time (s) Rds(ON) vs. Temperature 80.0 75.0 70.0 65.0 60.0 55.0 50.0 45.0 40.0 -40 -20 0 20 40 60 80 100 120 VCC=3V VCC=5V Temperature (C) 4625.2002.1.0.93 Output (A) 6 Input Voltage 8 6 Input Voltage 6 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 SOP8 SOP8 TSSOP8 TSSOP8 Enable EN (Active-high) EN (Active-low) EN (Active-high) EN (Active-low) Marking Part Number Bulk AAT4625IAS-1-B1 AAT4625IAS-B1 AAT4625IHS-1-B1 AAT4625IHS-B1 Tape and Reel AAT4625IAS-1-T1 AAT4625IAS-T1 AAT4625IHS-1-T1 AAT4625IHS-T1 Package Information SOP-8 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 Dim A A1 A2 B C D E e H L Y 1 c Q EH 1 2 D 7 (4x) A A2 b y e A1 L 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. 4625.2002.1.0.93 7 AAT4625 USB Single-Channel Power Switch TSSOP-8 Dim A A1 A2 b c D-8 D-28 E E1 e L L1 R R1 1 2 E E1 DETAIL A 1 2 D E 0.20 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 e R1 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 A2 A1 A L R 1 b 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 |
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