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| AT1601 Preliminary Product Information USB High-Side Power Switches with Flag Features *Built-In (Typical 110m at 5.0V) N-Channel MOSFET *Output can be Forced Higher Than Input (Off-State) * Low Supply Current 100A Typical On-State Current 1A 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 General Description 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. 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. Applications *High-Side Power Protection Switch *USB Power Management *Notebook, Motherboard PCs 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: service@aimtron.com.tw 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 Description 1 2 3 4,5 7 6,8 EN FLG GND NC IN OUT I O P P P 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 IFLG IOUT (Human Body Mode) JA -55150 -3085 -0.36.5 50 Internal Limited 2 160 260 V mA A KV C/W C *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: service@aimtron.com.tw 2 AT1601 Preliminary Product Information USB High-Side Power Switches with Flag Recommended Operating Ratings Item Symbol Ratings Units Operating temperature IN input voltage EN input voltage TOPR -2085 1.85.5 05.5 V V Electrical Characteristics (VIN=5.0V, Ta=+250C) Values Parameter Symbol Condition Min. 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 Low to High Transition High to Low Transition EN=2.5V EN=1.0V 0.4*VCC 1.5 1.0 Typ. 1 1 120 100 0.01 0.01 1.7 0.1 110 130 1.4 1.0 1 1 200 Max. 8 5 160 120 0.5*VCC 1 1 140 180 2.0 10 10 A A A A V V A A V V m m A A A A s Unit Input Supply Current IIN1 Input Supply Current IIN2 VOH EN Enable Threshold VOL IEN EN Input Current UVLO Threshold UVLO Hysteresis Switch Resistance Short Circuit Current Limit Short Circuit FoldBack Current OUT Leakage Current OUT Turn-On Delay VUVLO IN rising UVLO IN Falling RON ILimit ISC Ileakage AT1601A Ileakage AT1601B tOn-D IN=5V, IOUT=500mA IN=3.3V, IOUT=500mA Enable into Load, RLOAD=1 RLOAD=0, measure prior to thermal shutdown EN=0, RLOAD=0 EN=IN, RLOAD=0 RLOAD=10 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: service@aimtron.com.tw 3 AT1601 Preliminary Product Information USB High-Side Power Switches with Flag OUT Turn-On Rise Time OUT Turn-Off Delay OUT Turn-Off Fall Time FLG Output Resistance FLG Off Current FLG Delay Time tOn-R tOff-D tOff-F RLOAD=10, CLOAD=100F RLOAD=10 RLOAD=10, CLOAD=100F IN=5V, IFLG=10mA IN=3.3V, IFLG=10mA 8 0.3 5 0.3 10 15 0.01 12 20 2540 1 15 ms s ms A ms RFLG IFLGL FLG=IN tFLGL From fault to FLG assertion * 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: service@aimtron.com.tw 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 FLG Delay waveform CH1:EN CH2:FLG CH3:VOUTCH4:IOUT Short Circuit Response CH1:EN CH2:FLG CH3:VOUT Turn-on Delay waveform CH1:EN CH2:FLG CH3:VOUT Turn-off Delay waveform CH1:EN CH2:FLG CH3:Vout CH4:VIN Power UP (UVLO) CH1:EN CH2:FLG CH3:Vout CH4:VIN 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: service@aimtron.com.tw 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 Turn-on CL=1000uF CH1:EN CH2:FLG CH3:Vout CH4:VIN 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: service@aimtron.com.tw 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: service@aimtron.com.tw 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 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: service@aimtron.com.tw 8 |
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