TPS564257DRLR

TPS56425x is a simple, easy-to-use, high-efficiency, high-power-density synchronous buck converter with an input voltage range of 3V to 17V, supporting up to 4A continuous output current over an output voltage range of 0.6V to 10V. TPS56425x uses D-CAP3 control mode to provide fast transient response and support low-ESR output capacitors with no external compensation required. The device supports duty cycle operation up to 97%. Integrated bootstrap capacitor helps achieve single layer PCB and can save total BOM cost. TPS564252 operates in Eco-mode to maintain high efficiency at light loads. TPS564257 operates in FCCM mode to maintain a constant frequency and low output ripple under all load conditions. TPS564255 operates in OOA mode to prevent audio noise. The device integrates comprehensive hiccup-mode OVP, OCP, UVLO, OTP, and UVP protection. The device is available in a 1.6mm×1.6mm SOT-563 package. The rated junction temperature range is -40°C to 125°C.

Applications

• WLAN/Wi-Fi access points, switches, routers
• Professional audio, surveillance, drones
• TVs, STBs and DVRs, smart speakers
• Solid-state drives
• Power meters

Key features

• 3V to 17V input voltage range
• 0.6V to 10V output voltage range
• 0.6V reference voltage
• ±1% reference accuracy at 25°C
• ±1.5% reference accuracy over -40°C to 125°C temperature range
• Integrated 55.0mΩ and 24.3mΩ MOSFETs
• 100μA low quiescent current
• 600kHz switching frequency
• Operation up to 97% maximum duty cycle
• Precision EN threshold voltage
• 1.6ms fixed soft-start time (typical)
• TPS564252 with Eco-mode, TPS564257 with FCCM mode, and TPS564255 with OOA mode at light load
• D-CAP3 control mode
• Easy layout with integrated bootstrap capacitor
• Pre-biased output startup support
• Open-drain power-good indicator
• Non-latching OV, OT, and UVLO protection
• Discontinuous mode with UV protection
• Cycle-by-cycle OC and NOC protection
• 1.6mm × 1.6mm SOT-563 package