TPS56339DDCR

TPS56339 is a 3A synchronous buck converter with an input voltage range of 4.5V to 24V. The device integrates two switching MOSFETs, internal loop compensation, and a 5ms internal soft-start function to reduce component count. The SOT-23 (6) package enables high power density with a minimal PCB footprint. TPS56339 employs Advanced Emulated Current Mode (AECM) control for fixed-frequency fast transient response. The device features internal adaptive loop regulation, eliminating the need for external compensation across a wide output voltage range. High-side cycle-by-cycle current limiting protects the device under current overload conditions, while low-side pull current limiting prevents current runaway for enhanced protection. Hiccup protection is triggered under undervoltage and thermal shutdown conditions.

Applications

• 12V, 19V distributed bus power supply
• Industrial applications
• Video surveillance and security system equipment
• Consumer applications
• Digital TV and LCD monitors
• Wireless and smart speakers

Key features

• Input voltage range: 4.5V to 24V
• Output voltage range: 0.8V to 16V
• 3A maximum continuous output current
• 500kHz fixed switching frequency
• Up to 97% duty cycle support
• Integrated 70mΩ and 35mΩ MOSFETs
• Shutdown current typical value: 3μA
• Quiescent current typical value: 98μA
• Internal 5ms soft-start
• Easy-to-use internal loop compensation
• Cycle-by-cycle current limiting for high-side and low-side MOSFETs
• Non-latching UVP, UVLO, and TSD protection
• SOT-23 (6) package