TPS54202DDCR

The TPS54202 is a 4.5-V to 28-V input voltage range, 2-A synchronous buck converter. The device includes two integrated switching FETs, internal loop compensation and 5-ms internal soft start to reduce component count. By integrating the MOSFETs and employing the SOT23 package, the TPS54202 achieves the high power density and offers a small footprint on the PCB. Advanced Eco-mode implementation maximizes the light load efficiency and reduces the power loss. In TPS54202, the frequency spread spectrum operation is introduced for EMI reduction. Cycle-by-cycle current limit in both high-side MOSFET protects the converter in an overload condition and is enhanced by a low-side MOSFET freewheeling current limit which prevents current runaway. Hiccup mode protection is triggered if the overcurrent condition has persisted for longer than the present time.

Applications

• 12-V, 24-V Distributed Power-Bus Supply
• Industry Application
• White Goods
• Consumer Application
• Audio
• STB, DTV Printer

Key features

• 4.5-V to 28-V Wide Input voltage Range
• Integrated 148-mΩ and 78-mΩ MOSFETs for 2-A, Continuous Output Current
• Low 2-μA Shutdown, 45-μA Quiescent Current
• Internal 5-mS Soft-Start
• Fixed 500-kHz Switching Frequency
• Frequency Spread Spectrum to Reduce EMI
• Advanced Eco-mode Pulse Skip
• Peak Current Mode Control
• Internal Loop compensation
• Overcurrent Protection for Both MOSFETs with Hiccup Mode Protection
• Over Voltage Protection
• Thermal Shutdown
• SOT-23 (6) Package