TCM851 - TelCom Semiconductor

TCM851 REGULATED GaAs FET BIAS SUPPLY

The TCM850/1/2/3 combines an inverting charge pump and a low noise linear regulator in a single small outline package. They are ideal for biasing GaAS FETs in cellular telephone transmitter power amplifiers All four devices accept a range of input voltages from 4.5V to 10.0V and have – 5mA output current capability. The TCM850/1/2 have both preset (– 4.1V) a.

Features

s s s Fixed
  – 4.1V or Adjustable
  – 0.5V to
  – 9V Output at 5mA 4.5V to 10V Input Voltage Range Low Output Voltage Ripple TCM850-852 .... 2mVp-p TCM853 ..... 1mVp-p 100kHz Charge Pump Switching Frequency Optional External Synchronizing Clock Input (TCM852) Logic Level Shutdown Mode .. 0.5µA Typ. Temperature (TCM850/852/853) Low Cost, 8-Pin SOIC Package GENERAL DESCRIPTION The TCM850/1/2/3 combines an inverting charge pump and a low noise linear regulator in a single small outline package. Th.