Linear Regulators

Linear voltage Low Drop Out (LDO) voltage regulators

Topologies developed:

• LDO Voltage Regulators dedicated to RF supply section
  – High PSRR (up to 80dB from 10Hz to 20kHz, 60dB at 100kHz)
  – Low Noise (below 10uV RMS)

• LDO Voltage Regulators dedicated to BB supply section
  – Low quiescent current (below 10uA)
  – Quiescent current adaptable to output current
  – Soft Start and Power on Reset management

• LDO Voltage Regulators dedicated to Backup and RTC supply section
  – Very Low Quiescent Current (below 2uA)
  – diode emulation to prevent reverse current from the backup battery

• LDO Voltage Controllers dedicated to high current applications
  external FETs (DDR supply, Micro Supply, …)

Characteristics:

• Small Ceramic external Capacitors (from 1nF to 10µF)
• Built-in over-current sensing and protection
• Optimized Power Devices Layout for area saving