Datasheet Brief KTB8331 For full datasheet, click HERE. 2 3A, 2.4MHz, Low-Voltage, I C Programmable Buck Regulator Features Brief Description The KTB8331 is a precision adaptive-on-time (AOT) 2.7 to 5.5V Input Voltage Range buck switching regulator with class-leading accuracy, 0.6 to 3.345V Programmable Output Voltage transient response, efficiency, and solution size 6.25mV steps below 1.39375V optimized for mobile and non-mobile application. It is 15mV steps above 1.44V 2 I C programmable for output voltages in the 0.6V to 3.0A Output Current 3.345V range. It features soft-start and DVS with 1% Accuracy at T = +25C A multiple programmable ramp rates. Versions with 2.5% over line/load/temp/setting various default settings can be ordered. The features Fast Transient Response and performance make the KTB8331 suitable for a Dynamic Voltage Scaling (DVS) with 8 ramp rates variety of applications including CPU/GPU core, DSP Soft-Start with 10 ramp rates and baseband, DDR memory, VIO, and sensor/analog 89% Peak Efficiency at Vout = 1.15625V power. 2.4MHz with Auto-Skip at light loads Programmable forced-PWM mode The KTB8331 is available in RoHS and Green compliant 15-bump 1.340mm x 2.045mm x 0.6mm 48uA typ. No-Load Supply Current in Skip Mode wafer-level chip-scale package (WLCSP). Tiny External Components L = 330 or 470nH (2012 or 2016 metric size) Cin = 10F (0402), Cout = 2x22F (2x0402) Over-Current, Short-Circuit, Under/Over-V , and IN Applications Thermal Shutdown Protections 2 1MHz I C Interface CPU, GPU, AP, DSP, FPGA, I/O, XCVR Power Open-Drain IRQ Output Flag HDD, LPDDR3, LPDDR4 Memory Power Tablets, Netbooks, Ultra-Books -40C to 85C Operating Temperature Range Smartphones, Mobile Internet Devices, IoT 15-bump Pb-free WLCSP (0.4mm pitch) 1.340 x 2.045mm (0.6mm height) DSC, Drones, Gaming Consoles, Accessories Pin/Register Compatible with FAN53526 Typical Application Schematic INPUT KTB8331 330nH OUTPUT 2.7 to 5.5V or 470nH 0.6 to 3.345V VIN LX 3A, 2.4MHz AOT Buck 10F PGND VOUT 2x 22F SCL 2 I C SDA Interface IRQ & EN DVS Logic VSEL AGND November 2020 Revision 03b Page 1 of 2 Kinetic Confidential Datasheet Brief KTB8331 Ordering Information 2 2 Default Output Voltage & Mode 7-bit I C Slave 1 Part Number Marking Package (VSEL = 1) (VSEL = 0) Address KTB8331AEDAA-TR QKXXYYZZZZ 1.15625V Forced-PWM 1.15625V Auto-Skip 1100 000=0x60h WLCSP15 1. WW is the device ID, XX is the date code, YY is the assembly code, and ZZZZ is the serial number. 2. Contact a Kinetic Technologies representative regarding versions with other default settings. Kinetic Technologies cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Kinetic Technologies product. No intellectual property or circuit patent licenses are implied. Kinetic Technologies reserves the right to change the circuitry and specifications without notice at any time. November 2020 Revision 03b Page 2 of 2 Kinetic Confidential