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AAT1151

Features: • VIN Range 2.7-5.5 Volts• Up to 95% Efficiency• High initial accuracy ±1%• 110 m RDS(ON) Internal Switches• < 1A Shutdown Current• 850kHz Switching Frequency• Fixed VOUT or Adjustable VOUT 1.0V• Integrated Power Switches• Synchro...

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SeekIC No. : 004261019 Detail

AAT1151: Features: • VIN Range 2.7-5.5 Volts• Up to 95% Efficiency• High initial accuracy ±1%• 110 m RDS(ON) Internal Switches• < 1A Shutdown Current• 850kHz Switching ...

AAT1151 Data Sheet

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Part Number:
AAT1151
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

• VIN Range 2.7-5.5 Volts
• Up to 95% Efficiency
• High initial accuracy ±1%
• 110 m RDS(ON) Internal Switches
• < 1A Shutdown Current
• 850kHz Switching Frequency
• Fixed VOUT or Adjustable VOUT 1.0V
• Integrated Power Switches
• Synchronous Rectification
• Current Mode Operation
• Internal Compensation
• Stable with Ceramic Capacitors
• PWM and PFM for optimum efficiency for all load conditions
• Internal Soft Start
• Over-Temperature Protection
• Current Limit Protection
• MSOP-8 and 16 pin QFN 3x3mm Package
• -40 to +85°C Temperature Range




Application

• Wireless Notebook Adapters
• Notebook Computers
• Digital Cameras
• Cellular Phones
• MP3 Players
• PDAs
• USB Powered Equipment




Specifications

Symbol Description Value Units
VCC, VP VCC, VP to GND 6 V
VLX LX to GND -0.3 to VP+0.3 V
VFB FB to GND -0.3 to VCC+0.3 V
VEN EN to GND -0.3 to 6 V
TJ Operating Junction Temperature Range -40 to 150 °C
VESD ESD Rating 2 - HBM 3000 V


  • VIN range: 2.7V-5.5V
  • Up to 95% efficiency
  • High initial accuracy 1%
  • 110 m RDS(ON) internal switches
  • < 1A shutdown current
  • 850kHz switching frequency
  • Fixed or adjustable VOUT
  • Integrated power switches
  • Synchronous rectification
  • Current mode operation
  • Internal compensation
  • Stable with ceramic capacitors
  • PWM and PFM for optimum efficiency for all load conditions
  • Internal soft start
  • Over-temperature protection
  • Current limit protection
  • MSOP-8 and QFN33-16 packages
  • -40 to +85C temperature range





Description

The AAT1151 SwitchReg™ is a member of Analogic Tech™'s Total Power Management™ IC product family. The step-down switching converter is ideal for applications where high efficiency is required over the full range of the output load conditions. The 2.7 to 5.5V input voltage range makes the AAT1151 ideal for single-cell Lithium Ion/ Polymer battery applications. Capable of more than 700mA with internal MOSFETs, the currentmode controlled IC provides high efficiency using synchronous rectification. Fully integrated compensation simplifies system design and lowers external part count.

The device operates at a fixed 850kHz switching frequency and enters PFM mode for light load current to maintain high efficiency across all load conditions.

The AAT1151 is available in MSOP-8 and 16 pin 3x3mm QFN package rated over -40 to 85°C.



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The AAT1151 SwitchReg is a member of AnalogicTech Total Power Management IC product family. The step-down switching converter is ideal for applications where high efficiency is required over the full range of output load conditions. The 2.7V to 5.5V input voltage range makes the AAT1151 ideal for single-cell Lithium-Ion/ Polymer battery applications. Capable of more than 700mA with internal MOSFETs, the current mode controlled IC provides high efficiency using synchronous rectification. Fully integrated compensation simplifies system design and lowers external parts count. The device operates at a fixed 850kHz switching frequency and enters PFM mode for light load current to maintain high efficiency across all load conditions. The AAT1151 is available in MSOP-8 and QFN33-16 packages, rated over the -40 to +85C temperature range.






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