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RT5760 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT5760 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 23 page  RT5760 Copyright © 2019 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS5760-02 December 2019 www.richtek.com 1 6V Input, 1A, ACOTTM Buck Converter in Thin SOT-563 Package General Description The RT5760 is a simple, easy-to-use, 1A synchronous step-down DC-DC converter with an input supply voltage range of 2.5V to 6V. The device build-in an accurate 0.6V reference voltage and integrates low RDS(ON) power MOSFETs to achieve high efficiency in a SOT-563 (FC) package. The RT5760 adopts Advanced Constant On-Time (ACOTTM) 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 RT5760A operates in automatic PSM that maintains high efficiency during light load operation. The RT5760B operates in Forced PWM that helps meet tight voltage regulation accuracy requirements. The RT5760C/D remove the power good indicator function of the RT5760A/B for different application. The RT5760 senses both FETs current for a robust over-current protection. The device features cycle-by-cycle current limit protection and prevent 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, and over-temperature protection (thermal shutdown) to provide safe and smooth operation in all operating conditions. Features Input Voltage Range of 2.5V to 6V Integrated 120m and 80m FETs 1A Output Current, up to 95% Efficiency 100% Duty Cycle for Lowest Dropout 0.6V, 1% Internal Reference Voltage 2.2MHz Typical Switching Frequency Power Saving Mode for Light Loads (RT5760A/C) Low Shutdown Current 1A Low Quiescent Current: 25 A (Typ.) Fast Advanced Constant On-Time (ACOT TM) Control Internal Soft Startup (0.6ms) Independent Enable Control Input Power Good Indicator Both FETs Over-Current Protection Input Under-Voltage Lockout Protection Hiccup-Mode Output Under-Voltage Protection Over-Temperature Protection (Thermal Shutdown) RoHS Compliant and Halogen Free Applications Mobile Phones and Handheld Devices STB, Cable Modem, and xDSL Platforms WLAN ASIC Power / Storage (SSD and HDD) General Purpose for POL LV Buck Converter Simplified Application Circuit EN RT5760 FB GND VIN VIN CIN **PG L COUT SW VOUT RFB1 Enable RFB2 *CFF VPG RPG *CFF : Optional for performance fine-tune **PG : RT5760A/B only. |
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