XRP6670 XRP6670 3A 300kHz-2.5MHz Synchronous Step Down Regulator 3A 300kHz-2.5MHz Synchronous Step Down Regulator November 2019 Rev. 1.0.2 GENERAL DESCRIPTION APPLICATIONS The XRP6670 is a synchronous current mode Industrial & Medical Equipment PWM step-down (buck) regulator capable of Audio-Video Equipment delivering up to 3 Amps. A 2.6V to 5.5V input voltage range allows for single supply Networking & Telecom Equipment operation from industry standard 3.3V and 5V Portable/Battery Operated Equipment power rails. Based on a current mode PWM control FEATURES scheme, the XRP6670 operating frequency is programmable between 300kHz and 2.5MHz Guaranteed 3A Output Current via an external resistor. This flexibility allows Input Voltage: 2.6V to 5.5V the XRP6670 to optimize component selection Prog. PWM Current Mode Control and reduce component count and solution footprint. It provides a low output voltage Programmable 300kHz to 2.5MHz ripple, excellent line and load regulation and 100% Duty Cycle LDO Mode Operation has a 100% duty cycle LDO mode. Output Achieves 95% Efficiency voltage is adjustable to as low as 0.8V with a better than 2% accuracy while a low quiescent Adjustable Output Voltage Range current supports the most stringent battery 0.8V to 5V with 2% Accuracy operating conditions. Enable and Power Good Functions Built-in over-temperature, overcurrent, short 460A Quiescent Current circuit and under-voltage lock-out protections insure safe operations under abnormal Over-temperature, Over-current, operating conditions. Short-circuit and UVLO Protections The XRP6670 is offered in a RoHS compliant, RoHS Compliant Green/Halogen Free green/halogen free 3mmx3mm 10-pin DFN 3mm x 3mm 10-Pin DFN Package package. TYPICAL APPLICATION DIAGRAM Fig. 1: XRP6670 Application Diagram 1/13 Rev. 1.0.2 XRP6670 XRP6670 3A 300kHz-2.5MHz Synchronous Step Down Regulator 3A 300kHz-2.5MHz Synchronous Step Down Regulator ABSOLUTE MAXIMUM RATINGS OPERATING RATINGS These are stress ratings only and functional operation of Input Voltage Range VIN ............................... 2.6V to 5.5V the device at these ratings or any other above those Maximum Output Current (Min.) ................................. 3A indicated in the operation sections of the specifications Junction Temperature Range ................. -40C to +125C below is not implied. Exposure to absolute maximum Thermal Resistance ...................................................... rating conditions for extended periods of time may affect DFN10 JA ....................................................110C/W reliability. DFN10 ....................................................... 3C/W JC V , PV , FB, COMP, SHDN/RT ................... -0.3V to 6.0V DD DD SW ................................................... -0.3V to VDD+0.3V Note 1: TJ is a function of the ambient temperature TA and Junction Temperature Range ............................... +150C power dissipation PD: (TJ = TA + (PD * JA)) Storage Temperature .............................. -65C to 150C Power Dissipation ................................ Internally Limited Lead Temperature (Soldering, 10 sec) ................... 260C ESD Rating (HBM - Human Body Model) .................... 2kV ESD Rating (MM - Machine Model) ........................... 200V ELECTRICAL SPECIFICATIONS Specifications are for an Operating Junction Temperature of T = T = 25C only limits applying over the full Operating A J Junction Temperature range are denoted by a . Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25C, and are provided for reference purposes only. Unless otherwise indicated, V = V = 3.3V, T = T = 25C. DD PVDD A J Parameter Min. Typ. Max. Units Conditions Supply Current 460 A VFB=0.75V, No switching Shutdown Supply Current 1 A SHDN/RT=V =V =5.5V DD PVDD Under Voltage Lockout (UVLO) 2.2 V V rising DD Threshold Under Voltage Lockout (UVLO) 300 mV Hysteresis Feedback Voltage V 0.800 0.816 V FB 0.784 FB Pin Bias Current 0.1 0.4 A Current Sense Transresistance 0.2 Switching Leakage Current 1 A SHDN/RT=VDD=5.5V Error Amplifier Voltage Gain 800 V/V Error Amplifier Trans- 800 A/V conductance RT Pin Voltage 0.800 0.840 V 0.760 2.5 MHz Programmed via R 0.3 OSC Switching Frequency Range 0.8 1 1.2 ROSC=330k Maximum Duty Cycle 100 % VFB=0.75V Minimum On-Time 120 150 ns Switch Current Limit 4.2 A V =0.75V 3.2 FB Switching FET On Resistance 0.11 0.16 ISW=500mA Synchronous FET On Resistance 0.11 0.17 ISW=500mA Shutdown Threshold VDD-0.7 VDD-0.4 V PGOOD Voltage Range +15 % -15 PGOOD Pull Down Resistance 120 Output Current 3 A VDD= 2.6V to 5.5V, VOUT= 2.5V Output Voltage Line Regulation 0.4 %/V VDD= 2.7V to 5.5V, IOUT= 100mA Output Voltage Load Regulation 0.2 % I = 10mA to 3A OUT Soft Start Time 1.5 ms I = 10mA OUT Thermal Shutdown Temperature 160 C Thermal Shutdown Hysteresis 20 C 2/13 Rev. 1.0.2