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The TPS54628DDAR is an adaptive turn-on time D-CAP2 mode synchronous buck converter. The TPS54628DDAR enables system designers to complete the power bus regulator set for a variety of end devices with a cost effective, low component count, low standby current solution. The TPS54628DDAR's main control loop is controlled using the D-CAP2 mode, which provides fast transient response without the need for external compensation components. Adaptive turn-on time control supports seamless transitions between pulse width modulation (PWM) mode at higher loads and Eco-mode™ operation at lighter loads. Eco-mode™ enables the TPS54628DDAR to maintain high efficiency under light load conditions. The TPS54628DDAR's proprietary circuitry also allows the device to use low equivalent series resistance (ESR) output capacitors such as polymer organic semiconductor solid capacitors (POSCAP) or SP-CAPs, as well as ultra-low ESR ceramic capacitors. The device operates from an input voltage of 4.5V to 18V VIN. The output voltage can be set between 0.76V and 5.5V. The device also features an adjustable soft-start time.The TPS54628DDAR is available in an 8-pin DDA package and is designed for operation over the -40°C to 85°C operating temperature range.

TPS54628DDAR Product Features

D-CAP2 mode for fast transient response

Low output ripple with ceramic output capacitor support

Wide VIN input voltage range: 4.5V to 18V

Output Voltage Range: 0.76V to 5.5V

High-efficiency integrated field-effect transistors (FETs)

Optimised for lower duty cycle applications

-36mΩ (high side) and 28mΩ (low side)

High efficiency at turn-off with less than 10μA current consumption

High accuracy of initial bandgap reference

Adjustable soft-start

Pre-biased soft-start

650kHz switching frequency (fSW)

Cycle-by-cycle overcurrent limit

Auto jump Eco-mode for high efficiency at light loads

TPS54628DDAR Specifications

Product Category: Switching Regulator

Package/Box: SO-PowerPad-8

Topology: Buck

Output Voltage: 760 mV to 5.5 V

Output Current: 6 A

Number of Outputs: 1 Output

Input voltage - min: 4.5 V

Input Voltage - Max: 18 V

Quiescent current: 3 uA

Switching frequency: 650 kHz

Minimum operating temperature: - 40 C

Maximum operating temperature: + 125 C

Series: TPS54628

TPS54628DDAR Applications

- Wide range of applications in low voltage systems

- Digital TV power supplies

- HD Blu-ray Disc™ players

- Networked home terminals

- Digital Set-Top Boxes (STBs)

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