AOSMD
PRODUCTS
  
APPLICATIONS
  
DESIGN SUPPORT
  
ABOUT
  
CONTACT US

AOZ2231CQI-21

AOZ2231CQI-21

EZBuck™ DC-DC Buck Regulators

The AOZ2231CQI-21 is an I2C controllable, high-efficiency, easy-to-use DC-DC synchronous buck regulator capable of operation from a 6.5V to 28V input bus. The ability to control the output voltage using the I2C bus simplifies converter design for microprocessors or SoCs that require dynamic voltage scaling or voltage margining. The device is capable of supplying 4A of continuous output current with an output voltage adjustable from 0.7V to 0.92599V (±2.0%).

  • Datasheets
  • Markings
  • Package
  • Tape & Reel
Download Selected
Features
  • Wide input voltage range
    • 6.5V to 28V
  • 4A continuous output current
  • Output voltage adjustable from 0.7V to 0.92599V in 7.29mV
  • ±2.0% output voltage accuracy for I2C control
  • Low RDS(ON) internal NFETs
    • 28mΩ high-side
    • 28mΩ low-side
  • Constant On-Time with input feed-forward
  • Selectable PFM Light-Load Operation
  • Ceramic capacitor stable
  • Power Good output
  • I2C address programming
  • Integrated bootstrap diode
  • Cycle-by-cycle current limit
  • Short-circuit protection
  • Over voltage protection
  • Thermal shutdown
  • Thermally enhanced 4mm x 4mm QFN-22L package
Features
  • Wide input voltage range
    • 6.5V to 28V
  • 4A continuous output current
  • Output voltage adjustable from 0.7V to 0.92599V in 7.29mV
  • ±2.0% output voltage accuracy for I2C control
  • Low RDS(ON) internal NFETs
    • 28mΩ high-side
    • 28mΩ low-side
  • Constant On-Time with input feed-forward
  • Selectable PFM Light-Load Operation
  • Ceramic capacitor stable
  • Power Good output
  • I2C address programming
  • Integrated bootstrap diode
  • Cycle-by-cycle current limit
  • Short-circuit protection
  • Over voltage protection
  • Thermal shutdown
  • Thermally enhanced 4mm x 4mm QFN-22L package
Documentation
TitleTypeDateFile
AOZ2231CQI-21 DatasheetDatasheets2020-07-13PDF
AOZ2231CQI-21 MarkingMarkings2021-06-08PDF
QFN4x4_22L_EP2_SPackage2020-03-26PDF
QFN4x4_22L_EP2_S Tape & ReelTape & Reel2024-03-15PDF
Parametrics
Status
Full Production
Min Vin (V)
6.50
Max Vin (V)
28
Max Output I (A)
4
Min VOUT (V)
0.70
Max VOUT (V)
0.93
Package
QFN4x4-22L
Control Mode
COT
Light Load Mode
Yes
Ultrasonic Mode
No
External Comp
No
VCC Supply
Internal
Operating Freq (kHz)
400
Iq (uA)
500
Soft Start (ms)
4
HS FET RDS(ON) (mΩ)
28
LS FET RDS(ON) (mΩ)
28
Max Duty Cycle
85%
Adj. I Limit
No
Remote Sense
No
Enable
Yes
PGood
Yes
Forced PWM
Yes
Ripple Reduction
Yes
Low Power Mode
No
Protection
Selectable
Digital Interface
I2C
Output Discharge
No
Package Details
Package NameDimensionsPackage SpecificationsPackaging Method
QFN4x4_22L_EP2_S 4.0x4.0x0.9PDFTape and Reel