1FEATURES

23• D-CAP2™ Mode Enables Fast Transient

Response

• Low Output Ripple and Allows Ceramic Output

Capacitor

• Wide Vin Input Voltage Range: 4.5 V to 18 V

• Output Voltage Range: 0.76 V to 5.5 V

• Highly Efficient Integrated FET’s Optimized for

Lower Duty Cycle Applications –36 mΩ (High

Side) and 28 mΩ (Low Side)

• High Efficiency, less than 10 μA at shutdown

• High Initial Bandgap Reference Accuracy

• Adjustable Soft Start

• Pre-Biased Soft Start

• 650-kHz Switching Frequency (f SW)

• Cycle By Cycle Over Current Limit

• Power Good Output

• Auto-Skip Eco-mode™ for High Efficiency at

Light Load

APPLICATIONS

• Wide Range of Applications for Low Voltage

System

– Digital TV Power Supply

– High Definition Blu-ray Disc™ Players

– Networking Home Terminal

– Digital Set Top Box (STB)

DESCRIPTION

The TPS54626 is an adaptive on-time D-CAP2™

mode synchronous Buck converter. The TPS54626

enables system designers to complete the suite of

various end equipment’s power bus regulators with a

cost effective, low component count, low standby

current solution. The main control loop for the

TPS54626 uses the D-CAP2™ mode control which provides a very fast transient response with no

external components. The adoptive on-time control

supports seamless operation between PWM mode at

heavy load condition and reduced frequency

operation at light load for high efficiency. The

TPS54626 also has a proprietary circuit that enables the device to adopt to both low equivalent series

resistance (ESR) output capacitors, such as SP-CAP

and ultra-low ESR ceramic capacitors. The device

operates from 4.5-V to 18-V VIN input power supply

voltage. The output voltage can be programmed

between 0.76 V and 5.5 V. The device also features

an adjustable soft start time and a power good

function. The TPS54626 is available in the 14 pin

HTSSOP package, designed to operate from –40℃ to 85℃.