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AAT1143

Features: VIN Range: 2.7V to 5.5VVOUT Adjustable Down to 0.6V-Fixed or Adjustable Versio25ANo Load Quiescent CurrenUp to 95% Efficiency400mAMax Output Current1MHz Switching FrequencySoft StartOver-Temperature ProtectionCurrent Limit Protection100% Duty Cycle Low-Dropout Operation0.1AShutdown Curre...

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SeekIC No. : 004261011 Detail

AAT1143: Features: VIN Range: 2.7V to 5.5VVOUT Adjustable Down to 0.6V-Fixed or Adjustable Versio25ANo Load Quiescent CurrenUp to 95% Efficiency400mAMax Output Current1MHz Switching FrequencySoft StartOver-T...

AAT1143 Data Sheet

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Part Number:
AAT1143
Supply Ability:
5000

Price Break

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

VIN Range: 2.7V to 5.5V
VOUT Adjustable Down to 0.6V
-Fixed or Adjustable Versio
25ANo Load Quiescent Curren
Up to 95% Efficiency
400mAMax Output Current
1MHz Switching Frequency
Soft Start
Over-Temperature Protection
Current Limit Protection
100% Duty Cycle Low-Dropout Operation
0.1AShutdown Curren
SC70JW-8 Package
Temperature Range: -40°C to +85°C


Application

Cellular Phones
Digital Cameras
Handheld Instruments
Microprocessor / DSPCore / IO Power
PDAs and Handheld Computers
USB Devices


Pinout

Connection Diagram


Specifications

Symbol Description
 Value Units

VCC , VP

 VCC , VP to GND

6.0

 V
VLX

 LX to GND -0.3 to VP +0.3 V
VFB
 FB to GND -0.3 to V CC+0.3 V
VEN EN to GND -0.3 to 6 V
TJ
 Operating Junction Temperature Range -40 to 150 °C
TLEAD Maximum Soldering Temperature (at leads, 10 sec) 300 °C



Description

The AAT1143 SwitchReg™ is a member of AnalogicTech's Total Power Management IC™ (TPMIC™) product family. It is a 1MHz step-down converter with an input voltage range of 2.7V to 5.5V and output as low as 0.6V. Its low supply cur- rent, small size, and high switching frequency make the AAT1143 the ideal choice for portable applications.

The AAT1143 is available in either a fixed version with internal feedback or a programmable version with external feedback resistors. It can deliver 400mAof load current while maintaining a low 25Ano load quiescent current. The 1MHz switch ing frequency minimizes the size of external com-ponents while keeping switching losses low. The AAT1143 feedback and control delivers excellent load regulation and transient response with a small output inductor and capacitor.




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