RT2810BHGQUF

RT2810A/B TM 10A, 18V, 500kHz, ACOT Synchronous Step-Down Converter General Description Features 4.5V to 18V Input Voltage Range The RT2810A/B is a synchronous step-down converter TM 10A Output Current with Advanced Constant On-Time (ACOT ) mode control. TM 12m Internal High-Side N-MOSFET and 5.4m The ACOT provides a very fast transient response with Internal Low-Side N-MOSFET few external components. The low impedance internal Advanced Constant On-Time Control MOSFET supports high efficiency operation with wide Fast Transient Response input voltage range from 4.5V to 18V. The proprietary circuit Support All Ceramic Capacitors of the RT2810A/B enables to support all ceramic Up to 95% Efficiency capacitors. The output voltage can be adjustable between Adjustable Switching Frequency from 300kHz to 0.7V and 8V. The soft-start is adjustable by an external 700kHz capacitor. Adjustable Output Voltage from 0.7V to 8V Adjustable Soft-Start Ordering Information Pre-bias Start Up RT2810A/B Adjustable Current Limit from 6A to 16A Package Type Cycle-by-Cycle Over Current Protection QUF : UQFN-16JL 3x3 (U-Type) (FC) Power Good Output Lead Plating System Input Under-Voltage Lockout G : Green (Halogen Free and Pb Free) Hiccup/Latched Mode Under-Voltage Selection UVP Option H : Hiccup Mode UVP L : Latched OVP & UVP Applications A : PSM Industrial and Commercial Low Power Systems B : PWM Computer Peripherals Note : LCD Monitors and TVs Richtek products are : Green Electronics/Appliances RoHS compliant and compatible with the current require- Point of Load Regulation for High-Performance DSPs, ments of IPC/JEDEC J-STD-020. FPGAs, and ASICs Suitable for use in SnPb or Pb-free soldering processes. Simplified Application Circuit RT2810A/B V SW OUT V VIN IN BOOT EN EN Signal FB Power Good RT PGOOD PVCC RLIM SS GND Copyright 2016 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS2810A/B-04 March 2016 www.richtek.com 1RT2810A/B Marking Information RT2810AHGQUF RT2810BLGQUF 7H= : Product Code 7E= : Product Code YMDNN : Date Code YMDNN : Date Code 7H=YM 7E=YM DNN DNN RT2810ALGQUF Pin Configurations 7G= : Product Code (TOP VIEW) YMDNN : Date Code 7G=YM DNN 16 15 14 13 AGND 1 12 SW 2 11 FB SW RT2810BHGQUF 3 10 PVCC SW 7F= : Product Code 9 RT 4 BOOT YMDNN : Date Code 7F=YM 5 6 7 8 DNN UQFN-16JL 3x3 (FC) Functional Pin Description Pin No. Pin Name Pin Function 1 AGND Analog Ground. Feedback Voltage Input. It is used to regulate the output of the converter to a set 2 value via an external resistive voltage divider. The feedback reference voltage is FB 0.7V typically. Internal Regulator Output. Connect a 1F capacitor to GND to stabilize output 3 PVCC voltage. 4 An External Timing Resistor Adjusts the Switching Frequency of the Device. RT Soft-Start Time Setting. An external capacitor should be connected between this 5 SS pin and GND. Power Input. The input voltage range is from 4.5V to 18V. Must bypass with a 6 VIN suitably large ( 10F x 2) ceramic capacitor. 7 GND Ground. 8 PGOOD Power Good Indicator Open-Drain Output. Bootstrap. This capacitor is needed to drive the power switch s gate above the supply voltage. It is connected between SW and BOOT pins to form a floating 9 BOOT supply across the power switch driver. A 0.1F capacitor is recommended for use. 10 to 14 SW Switch Node. Connect this pin to an external L-C filter. Enable Control Input. A logic-high enables the converter a logic-low forces the IC 15 EN into shutdown mode reducing the supply current to less than 10A. 16 RLIM An External Resistor Adjusts the Current Limit of the Device. Copyright 2016 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS2810A/B-04 March 2016 2 SS RLIM VIN EN SW GND SW PGOOD