Date: 29th Jun 2011
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
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