RT6214AHRGJ8F Richtek

RT6214A/B TM 18V Input, 3A, ACOT Buck Converter in 6 and 8 Pin TSOT-23 with Both FETs OC Protection General Description Features Input Supply Voltage Range : 4.5V to 18V The RT6214A/B is a simple, easy-to-use, 3A 3A Converter with Built-In 100m/50m Low synchronous step-down DC-DC converter with an input RDS(ON) Power FETs supply voltage range of 4.5V to 18V. The device TM Advanced Constant On-Time (ACOT ) Control integrates low R power MOSFETs to achieve DS(ON) for Ultrafast Transient Response high efficiency in a SOT-23 package and build-in Fixed Switching Frequency : 500kHz (SOT23-6) accurate reference voltage (0.765V or 0.8V by product or 650kHz (SOT23-8) options). Optional for Operation Modes : The RT6214A/B adopts Advanced Constant On-Time TM Automatically Power Saving Mode (PSM) (ACOT ) control architecture to provide an ultrafast (RT6214A) transient response with few external components and to operate in nearly constant switching frequency over Forced PWM Mode (RT6214B) the line, load, and output voltage range. The RT6214A Optimized for Low-ESR Ceramic Output operates in automatic PSM that maintains high Capacitors efficiency during light load operation. RT6214B 1.5% High-Accuracy Feedback Reference operates in Forced PWM that helps meet tight voltage Voltage regulation accuracy requirements. Output Voltage Range : up to 6.5V The RT6214A/B senses both FETs current for a robust Internal fixed Soft-Start (typ. 1ms) for SOT-23-6 over-current protection. The device features Externally Adjustable Soft-Start for SOT-23-8 cycle-by-cycle current limit protection and prevent the Monotonic Start-Up for Pre-biased Outputs device from the catastrophic damage in output short Both HS/LS FETs Protection for Robust Over circuit, over current or inductor saturation. The Current Protection RT6214A/B SOT-23-6 series built-in soft-start function Input Under-Voltage Lockout (UVLO) prevents inrush current during start-up and the Output Under-Voltage Protection (UVP) with SOT-23-8 series offers programmable start-up by Hiccup Mode connecting a capacitor at external SS pin. The device Over-Temperature Protection (OTP) (Thermal also includes input under-voltage lockout, output Shutdown) under-voltage protection, and over-temperature Enable Control protection (thermal shutdown) to provide safe and Power Good Indication for SOT-23-8 smooth operation in all operating conditions. The RoHS Compliant and Halogen Free RT6214A/B are offered in TSOT-23-6 (FC) and Available in TSOT-23-6 or TSOT-23-8 Package TSOT-23-8 (FC) package. Copyright 2017 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS6214A/B-06 December 2017 www.richtek.com 1 RT6214A/B Ordering Information Marking Information ( ) RT6214AHRGJ6F RT6214A/B 2Y= : Product Code Package Type DNN : Date Code 2Y=DNN J6F : TSOT-23-6 (FC) J8F : TSOT-23-8 (FC) RT6214BHRGJ6F Lead Plating System 2X= : Product Code G : Green (Halogen Free and Pb Free) DNN : Date Code 2X=DNN Reference Voltage None : V = 0.8V (Only for TSOT-23-6 (FC)) REF RT6214AHGJ6F R : V = 0.765V REF 1G= : Product Code UVP Option DNN : Date Code 1G=DNN H : Hiccup PWM Operation Mode RT6214BHGJ6F A : Automatic PSM 1F= : Product Code B : Forced PWM DNN : Date Code 1F=DNN Note : RT6214AHRGJ8F Richtek products are : 24= : Product Code DNN : Date Code RoHS compliant and compatible with the current 24=DNN requirements of IPC/JEDEC J-STD-020. RT6214BHRGJ8F Suitable for use in SnPb or Pb-free soldering processes. 23= : Product Code DNN : Date Code 23=DNN Applications Set-Top Boxes LCD TVs Home Networking Devices Surveillance General Purpose Pin Configuration (TOP VIEW) BOOT EN FB 8 7 6 5 6 5 4 2 3 4 2 3 GND LX VIN TSOT-23-6 (FC) TSOT-23-8 (FC) Copyright 2017 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS6214A/B-06 December 2017 2 BOOT GND LX EN VIN FB PGOOD SS