ISL85001EVAL1Z Renesas

ISL85001 FN6769 Rev.3.00 1A Standard Buck PWM Regulator Apr 14, 2017 The ISL85001 is a high-performance, simple output controller Features that provides a single, high frequency power solution for a Standard buck controller with integrated switching power variety of point-of-load applications. The ISL85001 integrates a MOSFET 1A standard buck PWM controller and switching MOSFET. Integrated boot diode The PWM controller in the ISL85001 drives an internal switching N-channel power MOSFET and requires an external Input voltage range Schottky diode to generate an output voltage from 0.6V to - Fixed 5V 10% 19V. The integrated power switch is optimized for excellent - Variable 5.5V to 25V thermal performance for up to 1A of output current. The PWM output voltage adjustable from 0.6V to 19V with standard buck input voltage range supports a fixed 5V or continuous output current up to 1A variable 5.5V to 25V range. The PWM regulator switches at a fixed frequency of 500kHz and utilizes simple voltage mode 1% VFB tolerance control with input voltage feed-forward to provide flexibility in Voltage mode control with voltage feed-forward component selection and minimize solution size. Protection features include overcurrent, undervoltage and thermal Fixed 500kHz switching frequency overload protection integrated into the IC. The ISL85001 Externally adjustable soft-start time power-good signal output indicates loss of regulation on the Output undervoltage protection PWM output. Enable inputs ISL85001 is available in a small 4mmx3mm Dual Flat No-Lead PGOOD output (DFN) package. Overcurrent protection Related Literature Thermal overload protection For a full list of related documents, visit our website Internal 5V LDO regulator - ISL85001 product page Pb-free (RoHS compliant) Applications General purpose WLAN Cards-PCMCIA, Cardbus32, MiniPCI cards-compact flash cards Hand-held instruments LCD panel Set-top box FN6769 Rev.3.00 Page 1 of 16 Apr 14, 2017ISL85001 Typical Application Schematic R 3 C 3 301 100pF VOUT R 1 R C 4 2 10k 3.16k 2.2nF C 1 10pF R 2 31k C 5 0.1F VIN 5.5V TO 25V C 9 10F EN L 22 H PHASE V = 2.5V OUT ISL85001 PG C C 11 10 47F 0.1F BOOT D B340LB GND VDD C 13 1 F FIGURE 1. V RANGE FROM 5.5V TO 25V IN FN6769 Rev.3.00 Page 2 of 16 Apr 14, 2017 SS FB COMP