TPS62868数据手册集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF

描述 Description

The TPS62868 and TPS62869 devices are high-frequency synchronous step-down converters with I2C interface which provide an efficient, adaptive, and high power-density solution. At medium to heavy loads, the converter operates in PWM mode and automatically enters Power Save Mode operation at light load to maintain high efficiency over the entire load current range. The device can also be forced in PWM mode operation for smallest output voltage ripple. Together with its DCS-Control architecture, excellent load transient performance and tight output voltage accuracy are achieved. Through the I2C interface and a dedicated VID pin, the output voltage is quickly adjusted to adapt the power consumption of the load to the ever-changing performance needs of the application.

特性 Features

• 11-mΩ and 10.5-mΩ internal power MOSFETs
• >90% efficiency (0.9-V output)
• DCS-Control topology for fast transient response
• Available output voltage ranges for dynamic voltage scaling (DVS) through I2C
• Output voltage range from 0.2-V to 0.8375-V with 2.5-mV step size
• Output voltage range from 0.4-V to 1.675-V with 5-mV step size
• Output voltage range from 0.8-V to 3.35-V with 10-mV step size

• 1% output voltage accuracy
• 2.4-MHz switching frequency
• Selection by external resistor
• Start-up output voltage
• I2C target address

• Selection by I2C interface
• Power save mode or forced PWM mode
• Output discharge
• Hiccup or latching short-circuit protection
• Output voltage ramp speed

• Thermal pre-warning and thermal shutdown
• Power good indicator pin option with window comparator
• I2C-compatible interface up to 3.4 Mbps
• Available in 1.5-mm x 2.5-mm x 1.0-mm 9-pin QFN package with 0.5-mm pitch
• Also available in WCSP package: TPS62866, 6-A synchronous step-down converter with I2C interface in 1.05-mm x 1.78-mm WCSP package
• Create a custom design using with TPS62868/9 with the WEBENCH Power Designer