AAT4682 Datasheet, PDF (1/10 Pages) Advanced Analogic Technologies – Dual Electronic Resettable Switches

General Description
The AAT4682 dual electronic resettable fuse is a
member of AnalogicTech’s Application Specific
Power MOSFET™ (ASPM™) product family. It has
two 1A current limited P-channel MOSFET power
devices that remain fully enhanced as long as the
input power supply is above an under-voltage lock-
out threshold and the load is below the current limit
setting. If the load increases above the current limit
setting, as is the case during a short circuit, the
MOSFET effectively becomes a constant current
source equal to the current limit. If the current limit
condition persists long enough to heat the MOSFET
to an extreme temperature, both devices will ther-
mal cycle off and on until the current limit condition
is removed. Independent open drain FAULT flags
signal an over-current or over-temperature condi-
tion. Quiescent current typically is a low 10µA.
The AAT4682 is available in a Pb-free, 6-pin
SOT23 package and is specified over the -40°C to
+85°C temperature range.
AAT4682
Dual Electronic Resettable Switch
Features
SmartSwitch^™
• Dual P-Channel MOSFETs
• 500mA Steady State Load Current
• 600mA Minimum Current Limit Trip Point
• Low Quiescent Current, Typically 10µA
• Over-Temperature Protection
• Fast Transient Response:
— <1µs Response to Short Circuit
• 400mΩ Typical R_DS(ON)
• Under-Voltage Lockout
• Temperature Range: -40°C to +85°C
• FAULT Flag with 2ms Blanking
• 6-Pin SOT23 Package
Applications
• Cell Phone Ports
• Desktop PCs
• Peripheral Ports
• USB Ports
Typical Application
INPUT
CIN
1μF
GND
5 _IN
AAT4682
OUTA ⁶
OUTB ⁴
FAULTA ¹
GND
2
FAULTB ³
FAULTA
FAULTB
COUTA
1μF
OUTA
OUTB
COUTB
1μF
GND
4682.2006.05.1.2
1