Automotive, 2.5-V to 5.5-V input, 1-A output step-down converter with forced pulse-width modulation

The TPS62A01x-Q1 family of devices are

synchronous step-down buck DC-DC converters optimized for high efficiency and

compact design size. The devices integrate switches capable of delivering an output

current up to 1 A. At medium to heavy loads, the devices operate in pulse width

modulation (PWM) mode with 2.4-MHz switching frequency. At light load, the devices

automatically enter power save mode (PSM) to maintain high efficiency over the

entire load current range. In shutdown, the current consumption is minimal as well.

The TPS62A01A-Q1 variants of this device family operate in forced PWM across the

whole load current range.

The TPS62A01x-Q1 devices provide an adjustable

output voltage through an external resistor divider. An internal soft-start circuit

limits the inrush current during start-up. Other features like overcurrent

protection, thermal shutdown protection, and power good are built-in. The devices

are available in a SOT-563 package.