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12V Slew Rate Controlled Load Switch

The AAT4285 SmartSwitch is a P-channel MOSFET power switch designed for high-side load switching applications. The MOSFET operates from a 3.0V to 13.2V input range making it ideal for applications in single or dual cell Lithium-Ion battery systems. The device has a typical RDS(ON) of 240mΩ at 12V, allowing a low forward voltage drop and high current handling capability. The device is a slew rate limited turnon load switch and is functionally compatible with the AAT4250 and AAT4280 products, while offering a high operating voltage. The AAT4285 features fast load switch turn-on capability of 100µs and offers a shutdown load discharge circuit to rapidly turn off a load circuit when the switch is disabled. The quiescent supply current is very low, typically 25µA.

The AAT4285 is available in a Pb-free, 8-pin SC70JW package and is specified over the -40°C to +85°C temperature range.

Please note: AAT4285IJS-3-T1 is being discontinued and is not recommended for new designs.


  • VIN Range: 3.0V to 13.2V
  • Low RDS(ON)
  • 240mΩ typical @ 12V
  • 310mΩ Typical at 5V
  • 100µs Slew Rate Turn-on Time
  • Fast Shutdown Load Discharge
  • Low Quiescent Current
  • Typically 25µA
  • 1µA Maximum in Shutdown
  • TTL/CMOS Input Logic Level
  • Temperature Range: -40°C to +85°
  • 8-pin SC70JW Package
Data Sheets AAT4285 Data Sheet 202232A.pdf (1049 KB)
Application Notes Features of the AAT4285 12V Slew Rate Controlled Load Switch 202374A.pdf (1405 KB)
Designer Info AAT4285 Block Diagram AATI_BD_116.jpg (61 KB)
Designer Info AAT4285 Gerber File AATI_Gerber_116.zip (18 KB)
ProductName : AAT4285
Number of Channels : 1
Enable : Yes
Turn On Rise Time (TR) : 0.1ms
Typ. RDS(ON) (mΩ) : 240
VIN (V) : 3.0-13.2
Typ. IQ (μA) : 25
Package (mm) : SC70JW 8L, 2.2 x 2.0 x 1.05
Product Information:
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