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RT5753C Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT5753C Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 28 page  RT5753A/B/C/D ® DS5753A/B/C/D-03 May 2022 www.richtek.com 1 © Copyright 2022 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. 3A, 1.2MHz, 6V Synchronous Step-Down Converter In WDFN-8L 2x2 General Description The RT5753A/B/C/D is a simple, easy-to-use, 3A synchronous step-down DC-DC converter with an input supply voltage range from 2.5V to 6V. The device builds in an accurate 0.6V reference voltage and integrates low RDS(ON) power MOSFETs to achieve high efficiency in WDFN-8L 2x2 and WDFN-8SL 2x2 packages. The RT5753A/B/C/D adopts Advanced Constant On-Time (ACOT®) control architecture to provide an ultrafast transient response with few external components and to operate in nearly constant switching frequency over the line, load, and output voltage range. The RT5753A/C operates in automatic PSM that maintains high efficiency during light load operation. The RT5753B/D operates in Forced PWM that helps to meet tight voltage regulation accuracy requirements. The RT5753A/B/C/D senses both FETs current for a robust over-current protection. The device features cycle-by-cycle current limit protection which prevents the device from the catastrophic damage in output short circuit, over current or inductor saturation. A built-in soft-start function prevents inrush current during start-up. The device also includes input under-voltage lockout, output under-voltage protection, over-voltage protection (RT5753AL/BL/CL/DL) and over-temperature protection to provide safe and smooth operation in all operating conditions. Features Input Voltage Range from 2.5V to 6V Integrated 100m Ω Ω Ω Ω Ω and 70mΩ Ω Ω Ω Ω FETs 100% Duty Cycle for Lowest Dropout Internal Reference Voltage with 1% Accuracy 1.2MHz Typical Switching Frequency Power Saving Mode for Light Loads (RT5753A/C) Advanced Constant On-Time (ACOT ®) Control Internal Soft-Start (1.5ms/750 μμμμμs) Enable Control Input Power Good Indicator Both FETs Over-Current Protection Negative Over-Current Protection (RT5753B/D) Input Under-Voltage Lockout Protection Output Under-Voltage Protection Over-Temperature Protection RoHS Compliant and Halogen Free Applications Mobile Phones and Handheld Devices STB, Cable Modem, and xDSL Platforms WLANASIC Power / Storage (SSD and HDD) General Purpose for POL LV Buck Converters Simplified Application Circuit FB PGND AGND PG VIN EN SW VOUT VIN L CIN RT5753A/B/C/D RFB1 RFB2 COUT VPG Chip Enable CFF RPG |
Similar Part No. - RT5753C |
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Similar Description - RT5753C |
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