TPS564257 Series

3-V to 17-V input voltage, 4-A FCCM mode, synchronous buck converter

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Key Features

• Configured for a wide range of applications3-V to 17-V input voltage range0.6-V to 10-V output voltage range0.6-V reference voltage±1% reference accuracy at 25°C±1.5% reference accuracy at –40°C to 125°CIntegrated 55.0-mΩ and 24.3-mΩ MOSFETs100-µA low quiescent current600-kHz switching frequencyMaximum 97% large duty cycle operationPrecision EN threshold voltage1.6-ms fixed typical soft-start timeEase of use and small solution sizeTPS564252 Eco-mode, TPS564257 FCCM mode, TPS564255 OOA mode at light loadingD-CAP3™ control modeEasy layout with integrated bootstrap capacitorSupport start-up with prebiased outputOpen-drain power-good indicatorNon-latch for OV, OT, and UVLO protectionHiccup mode for UV protectionCycle-by-cycle OC and NOC protection1.6-mm × 1.6-mm SOT-563 packageCreate a custom design using the TPS564252 with theWEBENCH Power DesignerCreate a custom design using the TPS564255 with theWEBENCH Power DesignerCreate a custom design using the TPS564257 with theWEBENCH Power DesignerConfigured for a wide range of applications3-V to 17-V input voltage range0.6-V to 10-V output voltage range0.6-V reference voltage±1% reference accuracy at 25°C±1.5% reference accuracy at –40°C to 125°CIntegrated 55.0-mΩ and 24.3-mΩ MOSFETs100-µA low quiescent current600-kHz switching frequencyMaximum 97% large duty cycle operationPrecision EN threshold voltage1.6-ms fixed typical soft-start timeEase of use and small solution sizeTPS564252 Eco-mode, TPS564257 FCCM mode, TPS564255 OOA mode at light loadingD-CAP3™ control modeEasy layout with integrated bootstrap capacitorSupport start-up with prebiased outputOpen-drain power-good indicatorNon-latch for OV, OT, and UVLO protectionHiccup mode for UV protectionCycle-by-cycle OC and NOC protection1.6-mm × 1.6-mm SOT-563 packageCreate a custom design using the TPS564252 with theWEBENCH Power DesignerCreate a custom design using the TPS564255 with theWEBENCH Power DesignerCreate a custom design using the TPS564257 with theWEBENCH Power Designer

Description

The TPS56425x is a simple, easy-to-use, high efficiency, high power density, synchronous buck converter with input voltage ranging from 3 V to 17 V and supports up to 4-A continuous current at output voltages between 0.6 V and 10 V. The TPS56425x employs D-CAP3 control mode to provide a fast transient response and to support low-ESR output capacitors with no requirement for external compensation. The device can support up to 97% duty cycle operation. Integrated bootstrap capacitor helps achieve single layer PCB and can save total BOM cost. The TPS564252 operates in Eco-mode, which maintains high efficiency during light loading. The TPS564257 operates in FCCM mode, which keeps the same frequency and lower output ripple during all load conditions. The TPS564255 operates in OOA mode, which prevents audio noise generation. The device integrates complete protection through OVP, OCP, UVLO, OTP, and UVP with hiccup. The device is available in 1.6 mm × 1.6 mm SOT-563 package. The junction temperature is specified from –40°C to 125°C. The TPS56425x is a simple, easy-to-use, high efficiency, high power density, synchronous buck converter with input voltage ranging from 3 V to 17 V and supports up to 4-A continuous current at output voltages between 0.6 V and 10 V. The TPS56425x employs D-CAP3 control mode to provide a fast transient response and to support low-ESR output capacitors with no requirement for external compensation. The device can support up to 97% duty cycle operation. Integrated bootstrap capacitor helps achieve single layer PCB and can save total BOM cost. The TPS564252 operates in Eco-mode, which maintains high efficiency during light loading. The TPS564257 operates in FCCM mode, which keeps the same frequency and lower output ripple during all load conditions. The TPS564255 operates in OOA mode, which prevents audio noise generation. The device integrates complete protection through OVP, OCP, UVLO, OTP, and UVP with hiccup. The device is available in 1.6 mm × 1.6 mm SOT-563 package. The junction temperature is specified from –40°C to 125°C.