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AAT1145

SpecificationsInput Voltage Range: 2.5V to 5.5VOutput Voltages from 0.6V to VIN 1.5A Output CurrentHigh Efficiency: Up to 95%1.5MHz Constant Switching FrequencyLow RDS(ON) Internal Switches: 0.15ΩAllows Use of Ceramic CapacitorsCurrent Mode Operation for Excellent Line and Load Transient Resp...

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SeekIC No. : 004261012 Detail

AAT1145: SpecificationsInput Voltage Range: 2.5V to 5.5VOutput Voltages from 0.6V to VIN 1.5A Output CurrentHigh Efficiency: Up to 95%1.5MHz Constant Switching FrequencyLow RDS(ON) Internal Switches: 0.15 ...

AAT1145 Data Sheet

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Part Number:
AAT1145
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



Specifications

  • Input Voltage Range: 2.5V to 5.5V
  • Output Voltages from 0.6V to VIN
  • 1.5A Output Current
  • High Efficiency: Up to 95%
  • 1.5MHz Constant Switching Frequency
  • Low RDS(ON) Internal Switches: 0.15Ω
  • Allows Use of Ceramic Capacitors
  • Current Mode Operation for Excellent Line and Load Transient Response
  • Short-Circuit and Thermal Fault Protection
  • Soft Start
  • Low Dropout Operation: 100% Duty Cycle
  • Low Shutdown Current: ISHUTDOWN < 1µA
  • TDFN33-10 Package
  • 40C to +85C Temperature Range



Description

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The AAT1145 SwitchReg™ is a 1.5MHz constant frequency current mode PWM step-down converter.

It is ideal for portable equipment requiring very high current up to 1.5A from single-cell Lithium-ion batteries while still achieving over 90% efficiency during peak load conditions. The AAT1145 also can run at 100% duty cycle for low dropout operation, extending battery life in portable systems while light load operation provides very low output ripple for noise sensitive applications.

The AAT1145 can supply up to 1.5A output load current from a 2.5V to 5.5V input voltage and the output voltage can be regulated as low as 0.6V. The high switching frequency minimizes the size of external components while keeping switching losses low. The internal slope compensation setting allows the device to operate with smaller inductor values to optimize size and provide efficient operation.

The AAT1145 is available in adjustable (0.6V to VIN) and fixed (1.8V) output voltage versions. The device is available in a Pb-free, 3x3mm 10-lead TDFN package and is rated over the -40 to +85 temperature range.




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