The RAR-eSR-qLR Retention Alternating Regulator combines two regulation sub-components: a high-efficiency switching regulator (eSR) and an ultra low quiescent linear regulator (qLR). A Regulation Control Unit (RCU) manages booting and transitions between each regulation functions.

Key Benefits

  • Ideal regulator for power and voltage islets
  • Embedded RCU (Regulator Control Unit) to manage booting and mode transitions and to ensure data integrity
  • Configurable output drive before delivery to fit the application
  • High Efficiency (up to 95% peak efficiency)

Key Features

Minimum value
Typical value
Maximum value
Input Voltage
- 1.62 V 3.63 V
Output Voltage
- 0.55 V 2.5 V


  • Smart Headset
  • TWS Earpods
  • Smart Speaker
  • Home Appliance
  • AR - VR
  • Voice Assistant
  • Infotainment
  • Hearing aids
  • Voice-controlled devices
  • Bluetooth
  • NB-IoT
  • WiFi
  • GNSS
  • Cellular IoT

Technical information

  • Technology: TSMC 40 LP eFlash