RT6207AHGQUF

RT6207A/B TM 5A, 18V, 650kHz, ACOT Synchronous Step-Down Converter General Description Features Fast Transient Response The RT6207A/B is a high-performance 650kHz, 5A step- TM Advanced Constant On-Time (ACOT ) Control down regulator with internal power switches and 4.5V to 18V Input Voltage Range synchronous rectifiers. It features quick transient response TM Adjustable Output Voltage from 0.7V to 8V using its Advanced Constant On-Time (ACOT ) control 5A Output Current architecture that provides stable operation with small 60m Internal High-Side N-MOSFET and 22m ceramic output capacitors and without complicated Internal Low-Side N-MOSFET external compensation, among other benefits. The input Steady 650kHz Switching Frequency voltage range is from 4.5V to 18V and the output is TM Up to 95% Efficiency adjustable from 0.7V to 8V. The proprietary ACOT control Optimized for All Ceramic Capacitors improves upon other fast response constant on-time Externally-Adjustable, Pre-Biased Compatible Soft- architectures, achieving nearly constant switching Start frequency over line, load, and output voltage ranges. Since Cycle-by-Cycle Current Limit there is no internal clock, response to transients is nearly Input Under-Voltage Lockout instantaneous and inductor current can ramp quickly to Output Over- and Under-Voltage Protection maintain output regulation without large bulk output Power Good Output capacitance. The RT6207A/B is stable with and optimized Externally-Adjustable, Pre-Biased Compatible Soft- for ceramic output capacitors. With internal 60m switches Start and 22m synchronous rectifiers, the RT6207A/B displays Thermal Shutdown excellent efficiency and good behavior across a range of applications, especially for low output voltages and low duty cycles. Cycle-by-cycle current limit provides Applications protection against shorted outputs, input under-voltage Industrial and Commercial Low Power Systems lock-out, externally-adjustable soft-start, output under- and Computer Peripherals over-voltage protection, and thermal shutdown provide safe LCD Monitors and TVs and smooth operation in all operating conditions. The Green Electronics/Appliances RT6207A/B is available in the UQFN-13JL 2x3 (FC) Point of Load Regulation for High-Performance DSPs, package, with exposed thermal pad. FPGAs, and ASICs Simplified Application Circuit L RT6207A/B V SW OUT V VIN IN C C BOOT IN C OUT BOOT R1 C FF R PG V PGOOD PVCC EN FB Enable R2 SS PVCC V PVCC C C SS PVCC GND Copyright 2015 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS6207A/B-02 December 2015 www.richtek.com 1RT6207A/B Ordering Information Pin Configurations RT6207A/B (TOP VIEW) Package Type QUF : UQFN-13JL 2x3 (U-Type) (FC) 13 12 11 Lead Plating System GND 1 10 VIN G : Green (Halogen Free and Pb Free) 2 9 EN VIN UVP Option 3 8 FB PGOOD H : Hiccup Mode 4 7 NC NC L : Latched-Off Mode 5 6 A : PSM B : PWM Note : UQFN-13JL 2x3 (FC) Richtek products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. Marking Information RT6207AHGQUF RT6207BHGQUF 0R : Product Code 0P : Product Code W : Date Code W : Date Code 0RW 0PW RT6207ALGQUF RT6207BLGQUF 0Q : Product Code 0N : Product Code W : Date Code W : Date Code 0QW 0NW Functional Pin Description Pin No. Pin Name Pin Function 1, 13 GND Ground. 2 EN Enable Control Input. 3 FB Converter Feedback Input. Connect to output voltage feedback resistor divider. 4, 7 NC No Internal Connection. 5 SS Soft-Start Control. A external capacitor should be connected to GND. 6 PVCC 5V Power Supply Output. A capacitor (typical 1F) should be connected to GND. 8 PGOOD Open Drain Power Good Output. 9, 10 VIN Power Input and Connected to High-Side MOSFET Drain. Bootstrap Supply for High-Side Gate Driver. This capacitor is needed to drive the power switch s gate above the supply voltage. It is connected between SW and 11 BOOT BOOT pins to form a floating supply across the power switch driver. A 0.1F capacitor is recommended for use. 12 SW Switch Output. Copyright 2015 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS6207A/B-02 December 2015 2 GND SS SW PVCC BOOT