4-output Single Inductor Multiple Output (SIMO) DC/DC buck converter.

Key Benefits

  • Supply up to 4 power domains from a single inductor​
  • Low BoM: a single inductor to supply four distinct outputs​
  • Flexible: 4 individually programmable output voltages​
  • Extend battery lifetime:​
  • - during SoC active mode: high power efficiency​
  • - during SoC standby mode: low quiescent current​
  • Small and low-cost inductors: 1 µH

Key Features

PARAMETERS CONDITION
Minimum value
Typical value
Maximum value
Input Voltage
- 1.8 V 5.5 V
Output Voltage
- 0.5 V 3.5 V
Output current configuration
- - 200 mA;300 mA;400 mA;50 mA -
Quiescent current typical value
On AVD, All outputs enabled, ILOAD= 0 mA - 1200 nA -
Accuracy
PVT, including Line and Load Regulation - - -3%, +3%
Efficiency
Peak efficiency on OUT4, with OUT1, OUT2 and OUT3 disabled, VAV DPWR = 3.3 V, VOUT3 = 1.8 V, including typical parasitic described in Table 1.2 - - 85%

Applications

  • GNSS
  • Hearing aids
  • NB-IoT
  • Smart Headset
  • Smart Speaker
  • TWS Earpods
  • ULP MCU
  • Voice-controlled devices
  • Voice Assistant
  • WiFi

Key Performances

  • Total output current up to 350 mA
  • Efficiency up to 77%
  • Quiescent current (typical): 1 µA
  • Shutdown current (typical): 260 nA
  • DC accuracy: ±3%

Technical information

  • Technology: TSMC 22 uLL