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
- Perfect fit for battery-powered IoT applications that require both high-efficiency during active mode and ultra-low power consumption in AON domain during sleep and deep sleep mode
- Embedded RCU (Regulator Control Unit) to manage booting and mode transitions and to ensure data integrity
- Configurable output current to fit the application
- Support of input voltage from 2.7V to 5.5V (Li-Ion, USB supplies)
Key Features
| PARAMETERS | CONDITION |
Minimum value
|
Typical value
|
Maximum value
|
|---|---|---|---|---|
|
Input Voltage
|
- | 2.7 V | 5.5 V | |
|
Output Voltage
|
- | 0.55 V | 3.3 V | |
|
Output current configuration
|
- | - | 200 mA | - |
|
Quiescent current typical value
|
AVD = 2.6 V AVDPWR = 5 V | - | Normal mode = 135 + 28 = 163 µA Retention mode = 60 + 550 = 610 nA | - |
|
Accuracy
|
AVD = 2.6 V AVDPWR = 5 V | - | - | +3% |
|
Efficiency
|
cf eSR | - | - | cf eSR |
|
PSRR
|
NA | - | NA | - |
Applications
- Bluetooth
- Cellular IoT
- GNSS
- Hearing aids
- NB-IoT
- Smart Headset
- Smart Speaker
- TWS Earpods
- ULP MCU
- Voice-controlled devices
- Voice Assistant
- WiFi
Key Performances
- High Efficiency (>90% peak efficiency)
- Support of input voltage from 2.7V to 5.5V (Li-Ion, USB supplies)
- 1 mA output current in sleep mode to supply the AON domains
- Programmable output voltage from 0.55V to 3.3V
Technical information
- Technology: TSMC 40 LP
- Embedded features:
- RCU upgrades