AAT4618IJS-0.5-1-T1 ANALOGICTECH [Advanced Analogic Technologies], AAT4618IJS-0.5-1-T1 Datasheet

AAT4618IJS-0.5-1-T1

Manufacturer Part Number

AAT4618IJS-0.5-1-T1

Description

Current Limited Load Switch

Manufacturer

ANALOGICTECH [Advanced Analogic Technologies]

Datasheet

1.AAT4618IJS-0.5-1-T1.pdf (11 pages)

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General Description

The AAT4618 SmartSwitch is a member of

AnalogicTech's Application Specific Power MOS-

FET™ (ASPM™) product family. It is a current lim-

ited P-channel MOSFET power switch designed for

high-side load switching applications operating with

inputs ranging from 2.4V to 5.5V, making it ideal for

2.5V, 3V, and 5V systems. An integrated current-

limiting circuit protects the input supply from large

currents which may 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 R

AAT4618 can be used to control loads that require

up to factory preset 400mA, 500mA, or 1A. The

ultra-fast current limit response to a sudden short

circuit is a mere 400ns which reduces the require-

ments of local supply bypassing. An open drain

FAULT flag signals an over-current or over-temper-

ature condition after a 4ms timeout. Quiescent cur-

rent is a low 10µA and the supply current decreas-

es to less than 1µA in shutdown mode.

The AAT4618 is available in a Pb-free 5-pin SOT-

23 or a 8-pin SC70JW package and is specified

over the -40°C to +85°C temperature range.

The AAT4600 series is a family of adjustable and

fixed voltage SmartSwitch products with a range of

current handling capabilities. Single versions with

adjustable current limit (AAT4610, AAT4601) or

fixed current limit (AAT4625) are available, as well

as dual versions with fixed current limit (AAT4626,

AAT4670).

Typical Application

4618.2006.05.1.2

INPUT

GND

1μF

(ON)

ON (ON)

DS(ON)

, the

AAT4618

GND

Features

•

Applications

•

FAULT

OUT

2.4V to 5.5V Input Voltage Range

Current Limit Trip Threshold Options:

— 400mA Min

— 500mA Min

— 1A Min

Fast Transient Response:

— 400ns Response to Short Circuit

Low Quiescent Current:

— 10µA Typical

— < 1µA with Switch Off

125mΩ Typical R

FAULT Flag with 4ms Blanking

Under-Voltage Lockout

Thermal Shutdown

Temperature Range: -40°C to +85°C

4kV ESD Rating

5-Pin SOT23 or 8-Pin SC70JW Package

Hot Swap Supplies

Notebook Computers

Peripheral Ports

Personal Communication Devices

USB Ports

Current Limited Load Switch

100k

FAULT

DS(ON)

0.47μF

SmartSwitch

OUT

OUTPUT

GND

AAT4618

™

Related parts for AAT4618IJS-0.5-1-T1

AAT4618IJS-0.5-1-T1 Summary of contents

Page 1

General Description The AAT4618 SmartSwitch is a member of AnalogicTech's Application Specific Power MOS- FET™ (ASPM™) product family current lim- ited P-channel MOSFET power switch designed for high-side load switching applications operating with inputs ranging from 2.4V ...

Page 2

Pin Descriptions Pin # Symbol SOT23-5 SC70JW (ON Pin Configuration SOT23-5 (Top View) OUT 1 GND 2 FAULT 3 2 Function OUT P-channel MOSFET drain. GND ...

Page 3

Absolute Maximum Ratings T = 25°C, unless otherwise noted. A Symbol Description V IN, FAULT to GND IN, FAULT V ON (ON) to GND ON V OUT to GND OUT I Output Current OUT T Operating Junction Temperature Range J ...

Page 4

Electrical Characteristics -40°C to +85°C, unless otherwise noted. Typical values are temperature range. Symbol Description V Operation Voltage IN I Quiescent Current Q I Off Supply Current Q(OFF) I Off Switch Current ...

Page 5

Typical Characteristics Unless otherwise noted 5V Quiescent Current vs. Temperature -40 - Temperature (°C) Normalized Current Limit vs. Output Voltage 1.2 1 0.8 0.6 0.4 0.2 0 ...

Page 6

Typical Characteristics Unless otherwise noted 5V Turn- 20Ω 0.47µ OUT -0.5 0.0 0.5 1.0 Time (µs) Short Circuit Through 0.3Ω 6 ...

Page 7

Functional Block Diagram IN ON (ON) Functional Description The AAT4618 is a single channel current limited load switch that protects against short circuits by current limiting to a preset level. A patented fast- acting current limit loop limits the current ...

Page 8

Applications Information Input Capacitor The input capacitor C protects the power supply IN from current transients generated by the load attached to the AAT4618. When a short circuit is suddenly applied to the output of the AAT4618, a large current, ...

Page 9

AAT4618 would be if the AAT4618 were not dissi- pating power. Equation 1 can be rearranged to solve for shown in Equation 2. MAX SD(MIN Eq MAX DS(ON)(MAX ...

Page 10

... Sample stock is generally held on all part numbers listed in BOLD. 10 Current Limited Load Switch Current Limit Marking 1 0.5 AVXYY 0.5 DWXYY 1.0 EVXYY 1.0 EIXYY 0.4 0.4 0.5 AVXYY 0.5 DWXYY 1.0 EVXYY 1.0 EIXYY SOT23-5 0.075 ± 0.075 0.60 REF AAT4618 Part Number (Tape and Reel) 2 AAT4618IGV-0.5-T1 AAT4618IGV-0.5-1-T1 AAT4618IGV-1.0-T1 AAT4618IGV-1.0-1-T1 AAT4618IJS-0.5-T1 AAT4618IJS-0.5-1-T1 AAT4618IJS-1.0-T1 AAT4618IJS-1.0-1-T1 0.15 ± 0.07 GAUGE PLANE 0.45 ± 0.15 0.10 BSC 4618.2006.05.1.2 ...

Page 11

BSC 0.50 BSC 0.50 BSC 2.00 ± 0.20 7° ± 3° All dimensions in millimeters. © Advanced Analogic Technologies, Inc. AnalogicTech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AnalogicTech product. No ...

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