TPS54427 SOP8

FEATURES DESCRIPTION
The TPS54427 is an adaptive on-time D-CAP2™ 23• D-CAP2™ Mode Enables Fast Transient
Response mode synchronous buck converter. The TPS54427
enables system designers to complete the suite of
• Low Output Ripple and Allows Ceramic Output various end equipment’s power bus regulators with a
Capacitor cost effective, low component count, low standby
• Wide VIN Input Voltage Range: 4.5 V to 18 V current solution.
• Output Voltage Range: 0.76 V to 7.0 V The main control loop for the TPS54427 uses the
• Highly Efficient Integrated FETs Optimized D-CAP2™ mode control which provides a fast
for Lower Duty Cycle Applications transient response with no external compensation
– 70 mΩ (High Side) and 53 mΩ (Low Side) components.
• High Efficiency, Less Than 10 μA at Shutdown The TPS54427 also has a proprietary circuit that
• High Initial Bandgap Reference Accuracy enables the device to adopt to both low equivalent
series resistance (ESR) output capacitors, such as
• Adjustable Soft Start POSCAP or SP-CAP, and ultra-low ESR ceramic
• Pre-Biased Soft Start capacitors.
• 650-kHz Switching Frequency (fSW) The device operates from 4.5-V to 18-V VIN input.
• Cycle By Cycle Over Current Limit The output voltage can be programmed between
0.76 V and 7 V.
APPLICATIONS The device also features an adjustable soft start time.
• Wide Range of Applications for Low Voltage The TPS54427 is available in the 8-pin DDA
System package, and designed to operate from –40°C to
– Digital TV Power Supply 85°C.