AT1601 Preliminary Product Information USB High-Side Power Switches with Flag Features General Description •Built-In (Typical 110mΩ at 5.0V) N-Channel MOSFET •Output can be Forced Higher Than Input (Off-State) • Low Supply Current 100µA Typical On-State Current 1µA Typical Off-State Current •1A minimum Continuous Load Current •1.4A Typical Current Limit •Open-Drain Fault Flag Output •Hot Plug-In Application(Soft-Start) •1.8V to 5.5V Operating Range •1.7V Under-Voltage-Lockout(UVLO) •Thermal Shutdown Protection •SOP8 Package The AT1601 is an integrated high-side power switch optimized for self-powered and buspowered Universal Serial Bus (USB) applications. With built-in a charge pump circuitry to drive the internal MOSFET switch, the switch’s low onresistance meets USB voltage drop requirements. A flag output is available to indicate fault conditions to the local USB controller. Applications •High-Side Power Protection Switch •USB Power Management •Notebook, Motherboard PCs The AT1601 includes soft-start to limit inrush current during plug-in, 1.4A current limit to limit the output current to a safe level which meet the UL 25VA safety requirements, thermal shutdown to prevent catastrophic switch failure from highcurrent loads, under voltage lockout (UVLO) to ensure that the device remains off unless there is a valid input voltage present, and an enable input that is compatible with both 3.3V and 5V logic. System Block Aimtron reserves the right without notice to change this circuitry and specifications. 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 1 AT1601 Preliminary Product Information USB High-Side Power Switches with Flag Ordering Information Part Number AT1601A AT1601A_GRE AT1601B AT1601B_GRE Package SOP8 SOP8,Green SOP8 SOP8,Green Marking AT1601AS AT1601AS,date code with one bottom line AT1601BS AT1601BS,date code with one bottom line EN Active High Active Low Pin Assignment Pin Description Pin No. Symbol I/O 1 2 3 4,5 7 6,8 EN FLG GND NC IN OUT I O P P P Description Enable Input: AT1601A high active, AT1601B low active Open-Drain Fault Flag Output Ground Input Power Switch Output Absolute Maximum Ratings Item Symbol Ratings Units Storage temperature Operating temperature IN,OUT,FLG,EN input voltage FLG Current OUT Current ESD Protection * Thermal Resistance Lead Temperature(Soldering. 10sec.) TSTG TOPR -55〜＋150 -30〜＋85 -0.3〜＋6.5 50 Internal Limited 2 160 260 ℃ ℃ V mA A KV °C/W °C IFLG IOUT (Human Body Mode) θJA *Devices are ESD protected, handling precaution are recommended. 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 2 AT1601 Preliminary Product Information USB High-Side Power Switches with Flag Recommended Operating Ratings Item Operating temperature IN input voltage EN input voltage Symbol Ratings Units TOPR -20〜＋85 1.8〜5.5 0〜5.5 ℃ V V Electrical Characteristics (VIN=5.0V, Ta=+250C) Values Parameter Input Supply Current Input Supply Current EN Enable Threshold EN Input Current Symbol IIN1 IIN2 Condition Switch Off, OUT=Open VIN=5.0V Switch Off, OUT=Open VIN=3.3V Switch On, OUT=Open VIN=5.0V Switch On, OUT=Open VIN=3.3V - 1 8 µA - 1 5 µA - 120 160 µA - 100 120 µA - 0.5*VCC V VOL High to Low Transition 0.4*VCC - - V EN=2.5V - 0.01 1 µA EN=1.0V - 0.01 1 µA 1.5 1.7 - V - 0.1 - V IN=5V, IOUT=500mA - 110 140 mΩ IN=3.3V, IOUT=500mA - 130 180 mΩ 1.0 1.4 2.0 A - 1.0 - A IEN ∆UVLO IN Falling OUT Turn-On Delay Max. - UVLO Hysteresis OUT Leakage Current Typ. Low to High Transition VUVLO IN rising Short Circuit Current Limit Short Circuit FoldBack Current Min. VOH UVLO Threshold Switch Resistance Unit RON ILimit ISC Enable into Load, RLOAD=1Ω RLOAD=0Ω, measure prior to thermal shutdown Ileakage AT1601A EN=0, RLOAD=0Ω - 1 10 µA Ileakage AT1601B EN=IN, RLOAD=0Ω - 1 10 µA RLOAD=10Ω - 200 - µs tOn-D 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 3 AT1601 Preliminary Product Information USB High-Side Power Switches with Flag OUT Turn-On Rise Time tOn-R RLOAD=10Ω, CLOAD=100µF - 0.3 - ms OUT Turn-Off Delay tOff-D RLOAD=10Ω - 5 20 µs OUT Turn-Off Fall Time tOff-F RLOAD=10Ω, CLOAD=100µF - 0.3 - ms RFLG IN=5V, IFLG=10mA - 10 25- Ω FLG Output Resistance IN=3.3V, IFLG=10mA - 15 40 Ω FLG Off Current IFLGL FLG=IN - 0.01 1 µA FLG Delay Time tFLGL From fault to FLG assertion 8 12 15 ms * For AT1601A, off is ≤2.0V and on is ≥2.5V. For AT1601B, off is ≥2.5V and on is ≤2.0V.(IN=5V) Application Circuit 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 4 AT1601 Preliminary Product Information USB High-Side Power Switches with Flag Typical Characteristics(VIN=5V,TA=25℃,AT1601A.) CH1:EN CH2:FLG CH4:IOUT CH1:EN CH2:FLG CH3:VOUTCH4:IOUT FLG Delay waveform Short Circuit Response CH1:EN CH2:FLG CH3:VOUT CH1:EN CH2:FLG CH3:VOUT Turn-on Delay waveform Turn-off Delay waveform CH1:EN CH2:FLG CH3:Vout CH4:VIN CH1:EN CH2:FLG CH3:Vout CH4:VIN Power UP (UVLO) Power Down (UVLO) 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 5 AT1601 Preliminary Product Information USB High-Side Power Switches with Flag CH1:EN CH2:FLG CH3:Vout CH4:VIN Turn-on CL=47uF CH1:EN CH2:FLG CH3:Vout CH4:VIN Turn-on CL=220uF CH1:EN CH2:FLG CH3:Vout CH4:VIN CH1:EN CH2:FLG CH3:Vout CH4:VIN Turn-on CL=1000uF Turn-on CL=6000uF 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 6 AT1601 Preliminary Product Information USB High-Side Power Switches with Flag 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 7 AT1601 Preliminary Product Information USB High-Side Power Switches with Flag Package Description: SOP8 SYMBOL A B C D E F H J K M L e1 α INCHES MIN MAX 0.188 0.197 0.149 0.158 0.228 0.244 0.050 BSC 0.013 0.020 0.004 0.010 0.053 0.069 0.011 0.019 0.007 0.010 0.016 0.050 0.150 REF 450 0 80 0 MILLIMETERS MIN MAX 4.80 5.00 3.80 4.00 5.80 6.20 1.27 BSC 0.33 0.51 0.10 0.25 1.35 1.75 0.28 0.48 0.19 0.25 0.40 1.27 3.81 REF 450 0 0 80 NOTES - 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 8