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 T_A = +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 = 2×22µF (2×0402)
Over-current, short-circuit, under/over-V_IN, 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

Kinetic Technologies KTB8331 Programmable Buck Regulator

Features

Applications

Application Schematic

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