Product Summary

The TPS54229DDAR is an adaptive on-time D-CAP2 mode synchronous buck converter. The TPS54229DDAR enables system designers to complete the suite of various end equipment power bus regulators with a cost effective, low component count, low standby current solution. Applications of the TPS54229DDAR include: Digital TV Power Supply, High Definition Blu-ray Disc Players, Networking Home Terminal and Digital Set Top Box (STB) .

Parametrics

TPS54229DDAR absolute maximum ratings: (1) VIN, EN: -0.3 to 20V; (2) VBST: -0.3 to 26V; (3) VBST (10ns transient) : -0.3 to 28V; (4) VBST (vs SW) : -0.3 to 6.5V; (5) SW: -2 to 20V; (6) SW (10 ns transient) : -3 to 22V; (7) Output voltage range VREG5: -0.3 to 6.5V, GND: -0.3 to 0.3V; (8) Voltage from GND to thermal pad, Vdiff: -0.2 to 0.2V; (9) Operating junction temperature, TJ: -40 to 150°C; (10) Storage temperature, Tstg: -55 to 150°C.

Features

TPS54229DDAR features: (1) D-CAP2 Mode Enables Fast Transient Response; (2) Low Output Ripple and Allows Ceramic Output Capacitor; (3) Wide V Input Voltage Range: 4.5V to 18V; (4) Output Voltage Range: 0.76 V to 7.0V; (5) Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications; (6) High Efficiency, Less Than 10A at Shutdown; (7) High Initial Bandgap Reference Accuracy; (8) Adjustable Soft Start; (9) Pre-Biased Soft Start; (10) 650-kHz Switching Frequency (fSW) ; (11) Cycle By Cycle Over Current Limit.

Diagrams

TPS54229DDAR Circuit

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