Kinetic Technologies KTB8399 I2C Programmable Buck Regulators

Kinetic Technologies KTB8399 I²C Programmable Buck Regulators are precision adaptive-on-time (AOT) buck-switching regulators with class-leading accuracy, transient response, efficiency, and solution size optimized for mobile and non-mobile applications. KTB8399 regulators offer I²C programmability for output voltages in the 0.6V to 3.345V range. These devices feature soft-start and DVS with multiple programmable ramp rates. The features and performance make the KTB8399 suitable for various applications, including CPU/GPU core, DSP and baseband, DDR memory, VIO, and sensor/analog power. Available in RoHS and Green-compliant 15-bump 1.340mm x 2.045mm x 0.6mm wafer-level chip-scale package (WLCSP), the Kinetic Technologies KTB8399 I²C Programmable Buck Regulators operate within a -40°C to +85°C temperature range.

Features

2.5V to 5.5V input voltage range
0.6V to 3.345V programmable option for V_OUT
- 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, temperature, and setting
Fast transient response
Dynamic Voltage Scaling (DVS) with 8x ramp rates
90% peak efficiency at V_OUT = 1.136V
2.4MHz with auto-skip at light loads, programmable forced-PWM mode
46µA typical no-load supply current in skip mode

Tiny external components
- L = 330nH or 470nH (2012 or 2016 metric size)
- Cin = 10µF (0402), Cout = 2x 22µF (2×0402)
Soft start, overcurrent, short-circuit, under/overV_IN, and thermal shutdown protections
1MHz I²C interface
2.4MHz switching frequency
-40°C to +85°C operating temperature range
15-bump, lead-free WLCSP (0.4mm pitch)
- 1.340mm x 2.045mm (0.6mm height)
- Pin/register compatible with FAN53527

Applications

CPU, GPU, AP, DSP, FPGA, I/O, and XCVR power
HDD, LPDDR3, LPDDR4, and LPDDR5 memory power
Tablets, netbooks, and ultra-books

Smartphones, mobile internet devices, and IoT
DSC, drones, gaming consoles, and accessories

Kinetic Technologies KTB8399 I2C Programmable Buck Regulators

Features

Applications

Typical Application Schematic

husseinkey ELECTRONICS®

COMPANY