Precision current limited P-channel MOSFET power switches from Advanced Analogic

Advanced Analogic Technologies Inc. has introduced fully adjustable, low on-resistance precision current limited P-channel MOSFET power switch ICs developing high side load switching applications. The AAT4616 family offers a current limit of ± 5% to reduce the margin in their systems such as HDTVs, set top boxes and tablet computers to maximize the power usage from their USB or other supply rails and buses.

"In previous generations of our Load Switch Family, we integrated many discrete functions into space saving, single-chip solutions," said Roger Smullen, Director of Strategic Marketing for AnalogicTech. "With the introduction of the AAT4616 family, we deliver the same high performance, fully integrated solution with the added benefit of ultra-high precision current limiting. Whether our customers are producing HDTVs, tablets, set top boxes or 3G/4G USB datacards, they must constantly improve the performance, cost, size and efficiency of their products, and the AAT4616 products help them achieve those goals."

The SOT23-5 versions of the AAT4616 family are pin-to-pin drop-in replacement for previous generation switches; AAT4610 and AAT4614.

Key features of AAT4616 family listed by Advanced Analogic includes:
Input Voltage Range: 2.4V to 5.5V
Programmable Over-current Limit Setting
300mA to 1.6A
±5 percent High Current Limit Accuracy at 750mA (AAT4616)
±10 percent High Current Limit Accuracy at 750mA (AAT4616A)
Fast Transient Response:
2µs Response to Short Circuit
Low Quiescent Current
10µA Typical while Enabled
1µA Max with Switch Off
130mO Typical RDS (ON)
Under-Voltage Lockout (UVLO)
Reverse Blocking During Disable
4ms Fault Masking at Start-up (Capacitive Load)
Fault Flag Open Drain Output (TDFN22-6 and TDFN22-8 Packages Only)
Active Hi/Lo Enable Options
Over Temperature Protection
SOT23-5 and TDFN22-8 Package (AAT4616)
TDFN22-6 Package (AAT4616A)
Temperature Range: -40°C to +85°C