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Kinetic Technologies KTB8331 Programmable Buck Regulator

Kinetic KTB8331 Programmable Buck Regulator is a precision adaptive-on-time (AOT) buck switching regulator. It comes with class-leading accuracy, transient response, efficiency, and solution size optimized for mobile and non-mobile applications. It is I2C programmable for output voltages in the 0.6V to 3.345V range. It features soft-start and DVS with multiple programmable ramp rates. Versions with various default settings are available. The features and performance make the KTB8331 suitable for various applications, including CPU/GPU core, DSP and baseband, DDR memory, VIO, and sensor/analog power. The Kinetic KTB8331 is available in RoHS and Green compliant 15-bump 1.340mm x 2.045mm x 0.6mm wafer-level chip-scale package (WLCSP).

Features

  • 2.7V to 5.5V input voltage range
  • 0.6V 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
  • Dynamic Voltage Scaling (DVS) with eight ramp rates
  • Soft-start with ten ramp rates
  • 89% peak efficiency at Vout = 1.15625V
  • 2.4MHz with auto-skip at light loads
    • Programmable forced-PWM mode
  • 48uA typ. no-load supply current in skip mode
  • Tiny external components
    • L = 330nH or 470nH (2012 or 2016 metric size)
    • Cin = 10µF (0402), Cout = 2x22µF (2x0402)
  • Over-current, short-circuit, under/over-VIN, and thermal shutdown protections
  • 1MHz I2C interface
  • Open-drain IRQ output flag
  • -40°C to 85°C operating temperature range
  • 15-bump Pb-free WLCSP (0.4mm pitch)
    • 1.340 x 2.045mm (0.6mm height)
    • Pin/register compatible with FAN53526

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

Application Schematic

Schematic - Kinetic Technologies KTB8331 Programmable Buck Regulator
Veröffentlichungsdatum: 2021-05-24 | Aktualisiert: 2022-12-16