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RT5752 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT5752 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 32 page  RT5752 ® DS5752-03 November 2023 www.richtek.com 1 © Copyright 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. 2A, 1.2MHz, 6V Synchronous Step-Down Converter in TSOT-23-5/TSOT-23-6 and WDFN-6L 2x2 General Description The RT5752 is a simple, easy-to-use, 2A 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 TSOT-23-5, TSOT-23-6 and WDFN-6L 2x2 packages. The RT5752 adoptsAdvanced 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 RT5752A operates in automatic PSM that maintains high efficiency during light load operation. The RT5752B operates in Forced PWM that helps to meet tight voltage regulation accuracy requirements. The RT5752 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 (RT5752AL/BL) 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 (RT5752A) Advanced Constant On-Time (ACOT ®) Control Internal Soft Startup (1.5ms) Enable Control Input Power Good Indicator Negative Over-Current Protection (RT5752B) Fully Protection with UVLO, OVP, UVP, Cycle-by- Cycle Current Limit and OTP 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 GND PG VIN EN SW VOUT VIN L CIN RT5752 RFB1 RFB2 COUT VPG Chip Enable CFF RPG |
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