TPS53313RGER

The TPS53313 is a 5V or 12V synchronous buck converter with two integrated N-channel MOSFETs. Low RDS(on) and proprietary SmoothPWM skip-mode operation optimize light-load efficiency without compromising output voltage ripple. The TPS53313 features a programmable switching frequency (250kHz to 1.5MHz) with selectable skip mode or forced CCM operation. The device offers pre-biased startup, soft stop, integrated bootstrap switch, power-good function, and EN/input undervoltage lockout (UVLO) protection. It supports input voltages from 4.5V to 16V with no additional bias voltage required. The adjustable output voltage range is 0.6V to 0.7 × VIN. The TPS53313 is available in a 4mm × 4mm 24-pin VQFN package (green, RoHS-compliant, and lead-free), rated for an operating temperature range of -40°C to 85°C.

Key features

• 4.5V to 16V conversion voltage range
• Adjustable output voltage range: 0.6V to 0.7 × VIN
• 6A continuous output current
• Compatible with all MLCC output capacitors
• Selectable skip mode or forced CCM
• Selectable soft-start time (1ms, 3ms, or 6ms)
• Selectable 4A–5A, 6A, or 9A peak current limit
• Optimized efficiency under light and heavy load conditions
• Voltage mode control
• Programmable switching frequency range: 250kHz to 1.5MHz
• Synchronization to external clock
• RDS(on) sensing for zero-crossing detection and overcurrent protection
• Soft-stop output discharge during disable
• Overcurrent, overvoltage, and undervoltage protection in discontinuous mode
• Overtemperature protection
• Open-drain power-good indicator
• Internal bootstrap switch
• 4mm×4mm 24-pin VQFN package