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TDFN33-12 Folha de dados(PDF) 1 Page - Skyworks Solutions Inc. |
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TDFN33-12 Folha de dados(HTML) 1 Page - Skyworks Solutions Inc. |
1 / 17 page AAT4685 Over-Voltage Protection Switch with OCP and BOVP DATA SHEET 1 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201960A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 16, 2012 General Description The AAT4685 OVPSwitch™ is a member of Skyworks' Application Specific Power MOSFET™ (ASPM™) product family. It is an N-channel MOSFET power switch with precise over-voltage protection control, designed to pro- tect low-voltage systems against high-voltage faults up to +28V. It also integrates over-current protection (OCP), battery over-voltage protection (BOVP) and over- temperature protection (OTP). When the input voltage exceeds the programmed over- voltage threshold, the N-channel MOSFET switch will be turned off to prevent damage to the output load circuits. An external resistor divider is adopted to program the adjustable version over-voltage trip point. Over-current protection protects the case of output short circuits by disconnecting the load from the input supply. A battery voltage monitor is integrated and disconnect the IN and OUT when the battery voltage exceed its rated voltage. The AAT4685 also monitors its own die tempera- ture and OVP switch off if it becomes too hot. The AAT4685 includes an under-voltage lockout (UVLO) protection circuit, which puts the device into sleep mode at low input voltages only consuming 100μA current. It also includes two indicators: input supply power good indicator (POK) which is always active whether EN is low or high, and a fault flag indicator (FLT) which goes to active low when a fault condition (OV, OC, BOV and OT) occurs at EN = low. The AAT4685 is offered in a Pb-free, 3x3mm 12-pin TDFN package with a pin-out optimized for safety and is specified for operation over the -40°C to +85°C ambient temperature range. Features • V IN Range: 3.0V – 28V • OVP Threshold Setting Range: 4V – 7V ▪ Fixed: 5.85V and 6.8V ▪ Adjustable • Fast OVP Response: 1μs (max) Response to Over-Voltage Transient • OVP Recovery Delay Time: 8ms • Over-Current Protection • Adjustable 0.3 – 1.8A • Battery OVP 4.35V • Thermal Shutdown Protection • Low Quiescent Current ▪ 600μA Typical ▪ 100μA Typical Standby Current • Under-Voltage Lockout • 120mΩ Typical R DS(ON) at 5.0V • Active Low Enable with Internal 200kΩ Pull-Down Resistor • Input Supply Power Good Indicator, Open Drain • OVP/OCP/BOVP/OT Fault Indicator, Open Drain • Temperature Range: -40°C to 85°C • 3x3mm TDFN-12 Package Applications •Cell Phones •Digital Still Cameras •MP3 •Personal Data Assistants (PDAs) Typical Application C1 1μF C2 1μF IN OVP FLT EN OUT GND V IN 3.0V – 28V V OUT Fault Flag OCP BOVP POK V IO V IO IC AAT4685 R OVP1 R OVP2 R OCP BAT |
Nº de peça semelhante - TDFN33-12 |
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Descrição semelhante - TDFN33-12 |
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