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AS1337 Buck-Boost

200mA DC-DC Step-Up Converter with Buck Mode

The AS1337 is a synchronous buck boost converter with 200mA output capability at 3.3V. With efficiencies up to 97%, the device operates from 0.65V to 4.5V input, supplying 2.5V to 5V output.

Block diagram of the AS1337 Buck-Boost

Key Features

  • Input 0.65V to 4.5V
  • 97% efficiency
  • Synchronous 1.2MHz

Key Benefits

  • Single cell to Li-Ion supplies
  • Long battery life
  • Controlled noise spectrum

AS1337 Applications

The AS1337 Buck Boost Converter is ideal for low power applications where ultra small size is critical, such as:

  • Medical Diagnostic Equipment
  • Handheld Instruments
  • Pagers
  • Digital Cameras
  • Remote Wireless Transmitters
  • MP3 Players
  • LCD Bias Supplies
  • Cordless Phones
  • GPS Receivers
  • PC Cards

AS1337 Product Facts

Input voltage [V] 0.65 to 4.5
Output voltage [V] 2.5 to 5.0
Output current [mA] 200
Efficiency [%] 97
Iq [μA] 20
Architecture fixed, sync.
fmax [kHz] 1200
Enable/SHDN [ ]
Reset [POK]
Features LDO mode, adjustable output voltage
Package TDFN-8 (3x3)