AT1601 AIMTRON | Alldatasheet

Document overview

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Technical content

Features

  • Built-In (Typical 110mΩ at 5.0V) N-Channel MOSFET
  • Output can be Forced Higher Than Input (Off-State)
  • Low Supply Current 100 µA Typical On-State Current 1 µA 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-V oltage-Lockout(UVLO)
  • Thermal Shutdown Protection
  • SOP8 Package

Applications

  • High-Side Power Protection Switch
  • USB Power Management
  • Notebook, Motherboard PCs General Description The AT1601 is an integrated high-side power switch optimized for self-powered and bus- powered Universal Serial Bus (USB) applications. With built-in a charge pump circuitry to drive the internal MOSFET switch, the switch’s low on- resistance 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 25V A safety requirements, thermal shutdown to prevent catastrophic switch failure from high- current 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.

Preliminary Product Information USB High-Side Power Switches with Flag Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw

Ordering Information

Part Number Package Marking EN AT1601A SOP8 AT1601AS AT1601A_GRE SOP8,Green AT1601AS,date code with one bottom line Active High AT1601B SOP8 AT1601BS AT1601B_GRE SOP8,Green AT1601BS,date code with one bottom line Active Low Pin Assignment Pin Description Pin No. Symbol I/O Description

1 EN I Enable Input: AT1601A high active, AT1601B low active

2 FLG O Open-Drain Fault Flag Output

3 GND P Ground

4,5 NC -

7 IN P Input Power

6,8 OUT P Switch Output Absolute Maximum Ratings Item Symbol Ratings Units Storage temperature T STG -55〜＋150 ℃ Operating temperature T OPR -30〜＋85 ℃ IN,OUT,FLG,EN input voltage -0.3〜＋6.5 V FLG Current I FLG 50 mA OUT Current I OUT Internal Limited A ESD Protection * (Human Body Mode) 2 KV Thermal Resistance θJA 160 °C/W Lead Temperature(Soldering. 10sec.) 260 °C *Devices are ESD protected, handling precaution are recommended.

Preliminary Product Information USB High-Side Power Switches with Flag Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw Recommended Operating Ratings Item Symbol Ratings Units Operating temperature T OPR -20〜＋85 ℃ IN input voltage 1.8〜5.5 V EN input voltage 0〜5.5 V

Electrical Characteristics

(V IN=5.0V , Ta=+250C) Values Parameter Symbol Condition Min. Typ. Max. Unit Switch Off, OUT=Open VIN=5.0V -18 µA Input Supply Current IIN1 Switch Off, OUT=Open VIN=3.3V -15 µA Switch On, OUT=Open VIN=5.0V -1 2 0 1 6 0 µA Input Supply Current IIN2 Switch On, OUT=Open VIN=3.3V -1 0 0 1 2 0 µA VOH Low to High Transition - - 0.5*VCC V EN Enable Threshold VOL High to Low Transition 0.4*VCC - - V EN=2.5V - 0.01 1 µA EN Input Current IEN EN=1.0V - 0.01 1 µA UVLO Threshold VUVLO IN rising 1.5 1.7 - V UVLO Hysteresis ∆UVLO IN Falling - 0.1 - V IN=5V , IOUT=500mA - 110 140 mΩ Switch Resistance RON IN=3.3V , IOUT=500mA -1 3 0 1 8 0 mΩ Short Circuit Current Limit ILimit Enable into Load, RLOAD=1Ω 1.0 1.4 2.0 A Short Circuit FoldBack Current ISC RLOAD=0Ω, measure prior to thermal shutdown -1 . 0- A Ileakage AT1601A EN=0, RLOAD=0Ω -1 1 0 µA OUT Leakage Current Ileakage AT1601B EN=IN, RLOAD=0Ω -1 1 0 µA OUT Turn-On Delay tOn-D RLOAD=10Ω -2 0 0- µs

Preliminary Product Information USB High-Side Power Switches with Flag Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw OUT Turn-On Rise Time tOn-R RLOAD=10Ω, CLOAD=100µF -0 . 3- m s OUT Turn-Off Delay tOff-D RLOAD=10Ω -5 2 0 µs OUT Turn-Off Fall Time tOff-F RLOAD=10Ω, CLOAD=100µF -0 . 3- m s IN=5V , IFLG=10mA -1 0 2 5 - Ω FLG Output Resistance RFLG IN=3.3V , IFLG=10mA -1 5 4 0 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

Preliminary Product Information USB High-Side Power Switches with Flag Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw Typical Characteristics(VIN=5V,TA=25℃,AT1601A.) CH1:EN CH2:FLG CH4:IOUT FLG Delay waveform CH1:EN CH2:FLG CH3:VOUT Turn-on Delay waveform CH1:EN CH2:FLG CH3:Vout CH4:VIN Power UP (UVLO) CH1:EN CH2:FLG CH3:VOUTCH4:IOUT Short Circuit Response CH1:EN CH2:FLG CH3:VOUT Turn-off Delay waveform CH1:EN CH2:FLG CH3:Vout CH4:VIN Power Down (UVLO)

Preliminary Product Information USB High-Side Power Switches with Flag Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw CH1:EN CH2:FLG CH3:Vout CH4:VIN Turn-on CL=47uF CH1:EN CH2:FLG CH3:Vout CH4:VIN Turn-on CL=1000uF CH1:EN CH2:FLG CH3:Vout CH4:VIN Turn-on CL=220uF CH1:EN CH2:FLG CH3:Vout CH4:VIN Turn-on CL=6000uF

Preliminary Product Information USB High-Side Power Switches with Flag Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw

Preliminary Product Information USB High-Side Power Switches with Flag Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw INCHES MILLIMETERSSYMBOL MIN MAX MIN MAX NOTES A 0.188 0.197 4.80 5.00 - B 0.149 0.158 3.80 4.00 - C 0.228 0.244 5.80 6.20 - D 0.050 BSC 1.27 BSC - E 0.013 0.020 0.33 0.51 - F 0.004 0.010 0.10 0.25 - H 0.053 0.069 1.35 1.75 - J 0.011 0.019 0.28 0.48 K 0.007 0.010 0.19 0.25 - M 0.016 0.050 0.40 1.27 L 0.150 REF 3.81 REF - e1 45 0 450 - α 00 80 00 80 -