TPS6286BXX中文资料德州仪器数据手册PDF规格书

1 Features

• 2.4V to 5.5V input voltage range

• 8mΩ and 8mΩ internal power MOSFETs

• 5.1μA operating quiescent current

• 1.2MHz switching frequency

• 100% duty cycle mode

• 0.7% output voltage accuracy

• Forced PWM or power save mode

• DCS-Control topology (constant on-time)

• FB version (TPS6286Axx) output voltage:

– Adjustable from 0.6V to Vin

– Fixed (by external resistor) from 0.4V to 1.6V

• I2C version (TPS6286Bxx) with selectable:

– Output voltage from 0.4V to 1.675V with 5mV

step size

– Power save mode or forced PWM mode

– Hiccup or latching short-circuit protection

– Dynamic, adaptive voltage scaling ramp speed

• Output voltage discharge

• Hiccup short-circuit protection

• Power-good indicator with window comparator

• Thermal shutdown

• Adjustable soft start

• –40°C to 125°C operating temperature range

• Create a custom design using the TPS6286Axx

and TPS6286Bxx with the WEBENCH® Power

Designer

2 Applications

• Core supply for FPGAs, CPUs, ASICs, and DSPs

• Machine vision cameras

• IP network cameras

• Solid state drive

3 Description

The TPS6286Axx and TPS6286Bxx devices are highfrequency,

synchronous, step-down converters, which

provide an efficient, flexible, and high power-density

design. At medium to heavy loads, the converters

operate in pulse width modulation (PWM) mode and

automatically enter power save mode operation at

light load to maintain high efficiency over the entire

load current range. The devices can also be forced

in PWM mode operation to minimize output voltage

ripple. Together with the DCS-Control architecture,

excellent load transient performance and tight output

voltage accuracy is achieved. The devices feature

a Power-Good signal and an adjustable soft-start

feature. The devices are able to operate in 100%

mode. For fault protection, the devices incorporate a

HICCUP short-circuit protection as well as a thermal

shutdown.