XRP6657IHBTR-F

XRP6657 1.5A 1.3MHz Synchronous Step Down Converter November 2019 Rev. 1.5.1 GENERAL DESCRIPTION APPLICATIONS • Point of Loads The XRP6657 is a high efficiency synchronous step down DC to DC converter capable of delivering up to 1.5 Amp of current and optimized for portable battery-operated applications. • Set-Top Boxes • Portable Media Players • Hard Disk Drives Operating over an input voltage range of 2.5V to 5.5V, it provides an adjustable regulated output voltage down to 0.6V. The XRP6657 uses a constant 1.3 MHz frequency pulse width modulation (PWM) scheme allowing for compact external components, low output voltage ripple and fixed frequency noise, while Pulse Skip Mode (PSM) is used to improve light load efficiency. A low dropout mode provides 100% duty cycle operation. FEATURES • Guaranteed 1.5A Output Current − Fixed 1.3MHz Frequency PWM Operations − Up to 95% efficiency − Input Voltage: 2.5V to 5.5V • Adjustable Output Voltage • Internal Compensation Network The solution footprint is further reduced by a current mode internal compensation network and built-in synchronous switch removing the need for an external Schottky. Over-current and over-temperature protection insures safe operations under abnormal operating conditions. • No Schottky Diode Required • LDO Operation: 100% Duty Cycle • 240μA Quiescent Current (no load) • 1μA Shutdown Current • Soft Start Function The XRP6657 is available in a compact RoHS compliant “green”/halogen free thin 6-pin DFN package. • Over-current/Over-temperature Protection • “Green”/Halogen Free DFN-6 Package TYPICAL APPLICATION DIAGRAM Fig. 1: XRP6657 Application Diagram 1/12 Rev. 1.5.1 XRP6657 1.5A 1.3MHz Synchronous Step Down Converter ABSOLUTE MAXIMUM RATINGS OPERATING RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. Input Voltage Range VIN ............................... 2.5V to 5.5V Ambient Temperature Range TA ................. -40°C to 85°C Junction Temperature Range TJ.................-40°C to 125°C Thermal Resistance θJC ...................................... 10°C/W Thermal Resistance θJA ...................................... 55°C/W Input Voltage VIN ....................................... -0.3V to 6.0V EN, VFB Voltage ........................................... -0.3V to VIN SW Voltage ...................................... -0.3V to (VIN+0.3V) PMOS Switch Source Current (DC) .............................. 2A NMOS Switch Sink Current (DC) ................................. 2A Peak Switch Sink and Source Current....................... 3.5A Lead Temperature (Soldering, 10 sec) ................... 260°C Storage Temp. Range TSTG ....................... -65ºC to 150°C ESD Rating (HBM - Human Body Model) .................... 2kV ESD Rating (MM - Machine Model) ...........................200V Note 1: TJ is a function of the ambient temperature TA and power dissipation PD (TJ= TA + PD x 55°C/W). Note 2:XRP6657 has a build-in temperature protection circuitry to avoid damages from overload conditions. ELECTRICAL SPECIFICATIONS Specifications are for an Operating Junction Temperature of TA = 25°C only; limits applying over the full Operating Ambient 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 TA = 25°C, and are provided for reference purposes only. Unless otherwise indicated, VIN = 5.0V, TA= 25°C. Parameter Min. Typ. Feedback Current IVFB Regulated Feedback Voltage VFB Output Over-Voltage Lockout ΔVOVL Units nA 0.588 0.600 0.612 0.585 0.600 0.615 Reference Voltage Line Regulation ΔVFB3 Output Voltage Accuracy ΔVOUT% Max. ±100 -2.5 20 50 Output Voltage Line Regulation ΔVOUT4 Peak Inductor Current IPK V VIN = 2.5V to 5.5V 2.5 % • 80 mV 0.4 %/V 0.2 %/A Quiescent Current IQ2 240 Minimum Duty Cycle DMIN -40°C ≤ TA ≤ 85°C • Output Voltage Load Regulation VLOADREG 1.04 • %/V A Oscillator Frequency fOSC TA = 25°C 0.4 2.4 Shutdown Current ISHTDWN Conditions 340 ΔVOVL = VOVL - VFB • VIN=3V, VFB=0.5V or VOUT=90%, duty cycle1.2V: Enables the XRP6657