3A, 2.4MHz, Low-Voltage, I2C Programmable Buck Regulator

  • 2.7 to 5.5V Input Voltage Range
  • 0.6 to 3.345V Programmable Output Voltage
    • 6.25mV steps below 1.39375V
    • 15mV steps above 1.44V
  • 3.0A Output Current
  • ±1% Accuracy at TA = +25°C
    • ±2.5% over line/load/temp/setting
  • Fast Transient Response
    • <30mV droop for 10mA to 1.4A step (tr = 100ns @ FPWM)
  • Dynamic Voltage Scaling (DVS) with 8 ramp rates
  • Soft-Start with 10 ramp rates
  • 89% Efficiency (at Vin = 3.6V, Vout = 1.15625V)
  • 2.4MHz with Auto-Skip at light loads
    • Programmable forced-PWM mode
  • 48µA typ. No-Load Supply Current
  • Tiny External Components
    • L = 330 or 470nH (2012 or 2016 metric size)
    • Cin = 10µF (0402), Cout = 2×22µF (2×0402)
  • Over-Current, Short-Circuit, Under/Over-VIN, and Thermal Shutdown Protections
  • 1MHz I2C Interface
  • Open-Drain Output Flag
  • -40°C to 85°C Operating Temperature Range
  • 15-bump Pb-free WLCSP (0.4mm pitch)
    • 1.310 x 2.015mm (0.6mm height)

Applications

  • CPU, GPU, AP, DSP, FPGA, I/O, XCVR Power
  • HDD, LPDDR3, LPDDR4 Memory Power
  • Tablets, Netbooks, Ultra-Books
  • Smartphones, Mobile Internet Devices, IoT
  • DSC, Drones, Gaming Consoles, Accessories

Key Electrical Specifications

Vin (MIN) Vin (Max) Switching Frequency (MHz) Output Auto-Discharge Max Current
(A)
Package
2.7V 5.5V 2.4 Yes 3.0 WLCSP-15

Typical Application Diagram

KTB8330