The RAR-iLR-qLR.01 Retention Alternating Regulator enables this combination embedding two regulation sub-components: a 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
  • Performances in sleep mode: qLR with low quiescent current: 0.2 µA
  • Can supply always-on loads up to 300 μ
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  • Accessible voltage reference can be used by wake-up circuitry
  • Performances in normal mode: PFM embedded mode allowing high-efficiency at low load
  • High Efficiency (up to 95% peak efficiency)
  • Low Bill-of-Material: fully integrated feedback and active compensation loop to reduce the number of additional external passive components
  • Low Output Ripple
  • Over-temperature/Over-current protected Output

Key Features

Minimum value
Typical value
Maximum value
Input Voltage
- 1.62 V 3.63 V
Output Voltage
- 0.55 V 2.5 V
Output current configuration
- - 100 mA - 200 mA - 500 mA -


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

Technical information

  • Technology: TSMC 40 LP
  • Add-ons:
    • Over-voltage protection module (OPM) required for 2.7 to 5.5 V and 1.9 to 4.4 V input voltage range. The OPM enables over-voltage operation (up to 5.5 V) while using standard process 3.3 V devices. Power-On-Reset and Brown-On-Reset circuit (POR-BOR) Temperature sensor Power ON indicator