TPS62822DLCT

The TPS6282x is a versatile and easy-to-use synchronous step-down DC/DC converter with an ultra-low quiescent current of only 4μA. This device series features an input voltage range of 2.4V to 5.5V and delivers up to 3A of output current (TPS62823). Based on the DCS-Control™ topology, it achieves fast transient response. With an internal voltage reference, this product can regulate the output voltage down to as low as 0.6V with up to 1% feedback voltage accuracy over a junction temperature range of -40°C to 125°C. The scalable 1A/2A/3A pin-to-pin compatible device family enables BOM-to-BOM compatibility and is compatible with small 470nH inductors. The TPS6282x automatically enters power save mode under ultra-light load conditions while maintaining high efficiency. The device features a power-good signal and an internal soft-start circuit. It supports 100% duty cycle operation. For fault protection, it incorporates discontinuous current limiting and thermal shutdown. The TPS6282x is available in a 2 x 1.5mm QFN-8 package. The TPS6282x are synchronous step-down converters based on the DCS-Control™ topology with an adaptive constant on-time control and a stabilized switching frequency. It operates in PWM (pulse width modulation) mode for medium to heavy loads and in PSM (power save mode) at light load conditions, keeping the output voltage ripple small. The nominal switching frequency is about 2.2MHz with a small and controlled variation over the input voltage range. As the load current decreases, the converter enters PSM, reducing the switching frequency to keep efficiency high over the entire load current range. Since combining both PWM and PSM within a single building block, the transition between modes is seamless and without effect on the output voltage. The devices offer both excellent dc voltage and fast load transient regulation, combined with a very low output voltage ripple.

Applications

• POL power supply for portable/battery-powered devices
• Factory and building automation
• Mobile computing, NIC solid-state drives
• Data terminals, point-of-sale servers, projectors, printers

Key features

• DCS-Control™ topology 26/25mΩ internal power switches (TPS62823)
• Output current up to 3A (TPS62823)
• Ultra-low quiescent current: 4μA
• Typical switching frequency: 2.2MHz
• Feedback voltage accuracy 1% (full temperature range)
• Enable (EN) and power good (PG) pins
• Adjustable output voltage range: 0.6V to 4V
• 100% duty cycle mode
• Internal soft-start circuit
• Seamless power save mode transition
• Undervoltage lockout
• Active output discharge
• Cycle-by-cycle current limiting
• Hiccup short-circuit protection
• Overtemperature protection
• Use TPS62822 with WEBENCH Power Designer to create a customized design