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AAT2749

SpecificationsVIN Range: 2.3V to 5.5VTwo OutputsVOUT_BUCK = 1.8VVOUT_LDO = 1.0V, 1.2VStep-Down ConverterUltra-Small 0603 Inductor (Height 1mm)Up to 92% Efficiency3.0MHz Switching FrequencyMODE Selection Pin to Select Forced PWM or PWM/LL Operation ModeCurrent Limit ProtectionAutomatic Soft StartLD...

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SeekIC No. : 004261089 Detail

AAT2749: SpecificationsVIN Range: 2.3V to 5.5VTwo OutputsVOUT_BUCK = 1.8VVOUT_LDO = 1.0V, 1.2VStep-Down ConverterUltra-Small 0603 Inductor (Height 1mm)Up to 92% Efficiency3.0MHz Switching FrequencyMODE Selec...

AAT2749 Data Sheet

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Part Number:
AAT2749
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

  • VIN Range: 2.3V to 5.5V
  • Two Outputs
    • VOUT_BUCK = 1.8V
    • VOUT_LDO = 1.0V, 1.2V
  • Step-Down Converter
    • Ultra-Small 0603 Inductor (Height 1mm)
    • Up to 92% Efficiency
    • 3.0MHz Switching Frequency
    • MODE Selection Pin to Select Forced PWM or PWM/LL Operation Mode
    • Current Limit Protection
    • Automatic Soft Start
  • LDO Regulator
    • VINL Range: 1.62V to VIN
    • 300mA Output Current
    • Current Limit Protection
  • 100A No Load Quiescent Current
  • Over-Temperature Protection
  • -40C to +85C Temperature Range

 




Description

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The AAT2749 is a two channel power regulator that operates from 2.3V to 5.5V. The AAT2749 contains a 3.0MHz, 600mA step-down converter and a low input voltage 300mA LDO regulator.

The step-down converter can deliver 600mA of load current. The 3.0MHz switching frequency minimizes the size of external components while keeping switching losses low. The AAT2749 step-down converter maintains high efficiency throughout the operating range, which is critical for portable applications. Fixed frequency, low noise operation can be forced by a logic signal on the MODE pin.

The AAT2749 also contains a 300mA LDO regulator with input voltage capability as low as 1.62V. The LDO regulator power input can be tied directly to the output of the step-down regulator to increase efficiency.

Total quiescent current for the step-down converter and LDO is a low 100A under no load condition.

The AAT2749 is available in a Pb-free, space-saving 9-pin chip scale package (CSP) (200m bump in 400m pitch) and is rated over the -40C to +85C temperature range.




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