RT6222CHGJ6F Richtek

RT6222C/D TM 2A, 18V, 1.4MHz ACOT Synchronous Step-Down Converter General Description Features 4.3V to 18V Input Voltage Range The RT6222C/D is a synchronous step-down converter TM 2A Output Current with Advanced Constant On-Time (ACOT ) control mode. TM Advanced Constant On-Time Control The ACOT provides a very fast transient response with Fast Transient Response few external components. The low impedance internal Support All Ceramic Capacitors MOSFET supports high efficiency operation with wide input 1.4MHz Switching Frequency voltage range from 4.3V to 18V. The proprietary circuit of Adjustable Output Voltage from 0.6V to 8V the RT6222C/D enables to support all ceramic capacitors. Cycle-by-Cycle Current Limit The output voltage can be adjusted between 0.6V and 8V. Input Under-Voltage Lockout Hiccup Mode Under-Voltage Protection Ordering Information RT6222C/D Thermal Shutdown Package Type Power Saving Mode for High Efficiency at Light J6F : TSOT-23-6 (FC) Load Lead Plating System Low Output Voltage Ripple at Light Load G : Green (Halogen Free and Pb Free) High Side Over Current Limit UVP Option RoHS Compliant and Halogen Free H : Hiccup PSM/PWM Applications C : PSM/PWM D : Force-PWM Industrial and Commercial Low Power Systems Note : Computer Peripherals Richtek products are : LCD Monitors and TVs RoHS compliant and compatible with the current require- Green Electronics/Appliances ments of IPC/JEDEC J-STD-020. Point of Load Regulation for High-Performance DSPs, Suitable for use in SnPb or Pb-free soldering processes. FPGAs, and ASICs Pin Configurations (TOP VIEW) SW VIN EN 6 5 4 23 BOOTGND FB TSOT-23-6 (FC) Simplified Application Circuit RT6222C/D V BOOT VIN IN V SW OUT Enable EN FB GND Copyright 2015 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS6222C/D-00 September 2015 www.richtek.com 1RT6222C/D Marking Information RT6222CHGJ6F RT6222DHGJ6F 1P= : Product Code 1N= : Product Code 1P=DNN 1N=DNN DNN : Date Code DNN : Date Code Functional Pin Description Pin No. Pin Name Pin Function Bootstrap Supply for High-Side Gate Driver. Connect a 0.1 F ceramic capacitor 1 BOOT between the BOOT and SW pins. 2 GND Power Ground. Feedback Voltage Input. The pin is used to set the output voltage of the converter 3 FB via a resistive divider. The converter regulates V to 0.6V FB Enable Control Input. Connect EN to a logic-high voltage to enable the IC or to a 4 EN logic-low voltage to disable. Do not leave this high impedance input unconnected. Power Input. The input voltage range is from 4.3V to 18V. Must bypass with a 5 VIN suitable large ceramic capacitor at this pin. 6 SW Switch Node. Connect to external L-C filter. Copyright 2015 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS6222C/D-00 September 2015 2