AAT4611_06 ANALOGICTECH [Advanced Analogic Technologies], AAT4611_06 Datasheet

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AAT4611_06

Manufacturer Part Number
AAT4611_06
Description
Current Limited Load Switch in SOT23 Package
Manufacturer
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet
General Description
The AAT4611 SmartSwitch is a current limited P-
channel MOSFET power switch designed for high-
side load switching applications. This switch oper-
ates with inputs ranging from 2.7V to 5.5V, making
it ideal for both 3V and 5V systems. An integrated
current-limiting circuit protects the input supply
against large currents which may cause the supply
to fall out of regulation. The AAT4611 is also pro-
tected from thermal overload which limits power
dissipation and junction temperatures. It can be
used to control loads that require up to 1A. Current
limit threshold is programmed with a resistor from
SET to ground. The quiescent supply current is
typically a low 15µA max. In shutdown mode, the
supply current decreases to less than 1µA.
The AAT4611 is available in a Pb-free 5-pin SOT23
package and is specified over the -40°C to +85°C
temperature range.
Typical Application
4611.2006.09.1.4
INPUT
GND
1µF
ON (ON)
ON/(ON)
IN
Current Limited Load Switch in SOT23 Package
AAT4611
GND
Features
Applications
OUT
SET
Input Voltage Range: 2.7V to 5.5V
Programmable Over-Current Threshold
Fast Transient Response:
— <1µs Response to Short Circuit
Low Quiescent Current
— 15µA Typical
— 1µA Max with Switch Off
160mΩ Typical R
Only 2.5V Needed for ON/OFF Control
Under-Voltage Lockout
Thermal Shutdown
4kV ESD Rating
5-Pin SOT23 Package
Temperature Range: -40°C to +85°C
Hot Swap Supplies
Notebook Computers
Peripheral Ports
Personal Communication Devices
R
SET
0.47µF
DS(ON)
SmartSwitch
OUTPUT
GND
AAT4611
1

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AAT4611_06 Summary of contents

Page 1

General Description The AAT4611 SmartSwitch is a current limited P- channel MOSFET power switch designed for high- side load switching applications. This switch oper- ates with inputs ranging from 2.7V to 5.5V, making it ideal for both 3V and 5V ...

Page 2

Pin Descriptions Pin # Symbol Function 1 OUT P-channel MOSFET drain. Connect a 0.47µF capacitor from OUT to GND. 2 GND Ground connection. 3 SET Current limit set input. A resistor from SET to ground sets the current limit for ...

Page 3

Absolute Maximum Ratings T = 25°C, unless otherwise noted. A Symbol Description GND IN V ON(ON) to GND SET, OUT to GND SET, OUT I Maximum Continuous Switch Current MAX T Operating Junction Temperature ...

Page 4

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

Page 5

Typical Characteristics Unless otherwise noted 5V Quiescent Current vs. Temperature -40 - Temperature (°C) Output Current vs. Output Voltage ( R = 16kΩ) SET 0.6 0.4 ...

Page 6

Typical Characteristics Unless otherwise noted 5V Turn-On vs. Temperature Temperature (°C) Turn-On ...

Page 7

Typical Characteristics Unless otherwise noted 5V vs. I SET LIM 100 (A) LIM Current Limit vs. Temperature (R = 22.1kΩ SET IN OUT ...

Page 8

Functional Block Diagram IN ON (ON) Applications Information Setting Current Limit In most applications, the variation in I taken into account when determining R variation is due to processing variations from part to part, as well as variations in the ...

Page 9

I ." The maximum current is derived by multiplying LIM the typical current for the chosen R by 1.25. Some standard resistor values are listed in Table 1. Current Device Will Limit Not Current Current Limits R (Typ) Limit Below ...

Page 10

Ordering Information Package Enable SOT23-5 ON (active low) SOT23-5 ON (active high) All AnalogicTech products are offered in Pb-free packaging. The term “Pb-free” means semiconductor products that are in compliance with current RoHS standards, including the requirement that lead not ...

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