AAT4670_06 ANALOGICTECH [Advanced Analogic Technologies], AAT4670_06 Datasheet

AAT4670_06

Manufacturer Part Number

AAT4670_06

Description

Dual-Input, Dual-Output Load Switch

Manufacturer

ANALOGICTECH [Advanced Analogic Technologies]

Datasheet

1.AAT4670_06.pdf (13 pages)

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General Description

The AAT4670 SmartSwitch is a member of

AnalogicTech’s Application Specific Power MOS-

FET™ (ASPM™) product family.

consists of dual, independent, 1A current limited,

slew rate controlled P-channel MOSFET power

switches with a dedicated source and drain pin

assigned to each switch. The internal circuitry auto-

matically derives power from the higher of the two

input power source pins with a low operating quies-

cent current of 18µA. In shutdown mode, the supply

current decreases to less than 1µA. The switches

operate with inputs ranging from 2.2V to 5.5V, mak-

ing them ideal for 2.5V, 3V, and 5V systems. The

dual configuration permits integration of the load

switch function for systems with two different power

busses. Independent under-voltage lockout circuits

will shut down the corresponding switch if its input

voltage falls below the under-voltage lockout thresh-

old. If the die temperature reaches the thermal limit,

both switches thermal cycle off and on indefinitely

without damage until the thermal condition is

removed. An open drain FAULT output signals an

over-current or over-temperature condition for each

channel. Input logic levels are TTL compatible.

The AAT4670 is available in a Pb-free, space-sav-

ing, thermally-enhanced TDFN 3x3x0.8mm 12-lead

package. The device is also available in a Pb-free

8-pin SOP, TSSOP, or MSOP package and is spec-

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

Typical Application

4670.2006.09.1.4

GND

INA

INB

1μF

INA

1μF

INB

The AAT4670

INA

INB

AAT4670

GND

Dual-Input, Dual-Output Load Switch

FAULTA

FAULTB

OUTA

OUTB

Features

•

Applications

•

2.2V to 5.5V Input Voltage Range

1A Current Limit Per Channel

95mΩ Typical R

Fast Transient Response:

— <1µs Response to Short Circuit

Low 18µA Quiescent Current

1µA Max with Switches Off

Slew Rate Controlled

Thermal Shutdown

Fault Flags with 3ms Blanking

Under-Voltage Lockout

Temperature Range: -40°C to +85ºC

Available in TDFN33-12, SOP-8, TSSOP-8, or

MSOP-8 Package

Hot Swap Supplies

Media Bay

Notebook Computer

PDA, Subnotebook

Peripheral Ports

USB Ports

FAULTA

FAULTB

1μF

OUTA

DS(ON)

SmartSwitch

1μF

AAT4670

OUTB

GND

OUTA

OUTB

™

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