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AAT4618 Datasheet(PDF) 1 Page - Advanced Analogic Technologies |
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AAT4618 Datasheet(HTML) 1 Page - Advanced Analogic Technologies |
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1 / 10 page  SmartSwitch™ AAT4618 Current Limited Load Switch 4618.2002.2.0.9 1 General Description The AAT4618 SmartSwitch™ is a member of AnalogicTech's Application Specific Power MOS- FET™ (ASPM™) product family. It is a Current Limited P-channel MOSFET power switch designed for high-side load-switching applications operating with inputs ranging from 2.4V to 5.5V which makes it ideal for 2.5V, 3V and 5V systems. An integrated cur- rent-limiting circuit protects the input supply from large currents which potentially cause the supply to fall out of regulation. In addition, the AAT4618 thermal over- load protection limits power dissipation and junction temperatures associated with prolonged periods of operation in current limit. Due to its low RDS(ON), the AAT4618 can be used to control loads that require up to 500mA even while operating at high ambient tem- peratures. The ultra fast current-limit response to a sudden short circuit is a mere 400ns which reduces the requirements of local supply bypassing. An open drain FAULT flag signals an over current or over tem- perature condition after a 4ms timeout. Quiescent current is a low 10µA and in shutdown mode, the sup- ply current decreases to less than 1µA. The AAT4618 is available in a 5 pin SOT-23, and an 8 pin SC70JW specified over a -40 to 85°C temper- ature range. The AAT4600 Series is a family of adjustable and fixed SmartSwitch™ products with a range of current handling capabilities. Available are single versions with adjustable current limit (AAT4610, AAT4601) as well as fixed current limit (AAT4625), and dual ver- sions with fixed current limit (AAT4626, AAT4670). Features • 2.4V to 5.5V Input voltage range • 500mA min current limit trip threshold • Fast transient response: • 400ns response to short circuit • Low quiescent current • 10µA typical • < 1µA with Switch off • 125m Ω typical R DS(ON) • FAULT flag with 4ms blanking • Undervoltage Lockout • Thermal shutdown • Temp range -40 to 85°C • 4kV ESD Rating • 5 pin SOT23 package • 8 pin SC70JW package Applications • Peripheral ports • USB Ports • Notebook computers • Personal communication devices • Hot swap supplies Typical Application AAT4618 ON (ON) IN OUT FAULT GND ON (ON) 100k INPUT GND GND C IN 1 µF C OUT 0.47 µF OUTPUT FAULT |
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