JW5026

JW5026 40V/1A, 1.1MHz Synchronous Step-Down Converter Parameters Subject to Change Without Notice DESCRIPTION FEATURES The JW5026 is a current mode monolithic buck switching regulator. Operating with an input range of 4.7V~40V, the JW5026 delivers 1A of continuous output current with two integrated N-Channel MOSFETs. The internal synchronous power switches provide high efficiency without the use of an external Schottky diode. At light loads, the regulator operates in continual conduction mode to maintain low output ripple. Current mode control provides tight load transient response and cycle-by-cycle current limit. The JW5026 guarantees robustness with short-circuit protection, thermal protection, current run-away protection, and input under voltage lockout. The JW5026 is available in 6-pin SOT23-6 package, which provides a compact solution with minimal external components.









4.7V to 40V operating input range 1A output current Up to 93% efficiency FCC at light load Internal Soft-Start 1.1MHz switching frequency Input under voltage lockout Available in SOT23-6 package Current run-away protection Short circuit protection Thermal protection APPLICATIONS




Distributed Power Systems Automotive Systems High Voltage Power Conversion Industrial Power Systems Battery Powered Systems TYPICAL APPLICATION Efficiency 100 90 80 70 60 50 40 30 20 10 0 Efficiency % ） （ Vin=8V Vin=12V Vin=24V 0 200 400 600 800 1000 Io(mA) JW5026 Rev.0.8 JoulWatt Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 1 JW5026 JoulWatt ORDER INFORMATION TOP LEAD FREE FINISH TAPE AND REEL PACKAGE Note ： MARKING JW5026SOTB#PBF JW5026SOTB#TRPBF SOT23-6 JWBH PIN CONFIGURATION TOP VIEW BST 1 6 SW GND 2 5 V IN FB 3 4 EN S O T 2 3 -6 ABSOLUTE MAXIMUM RATING1） VIN, EN, SW Pin ................................................................................................................. -0.3V to 44V BST Pin ................................................................................................................... SW-0.3V to SW+5V All other Pins ......................................................................................................................... -0.3V to 6V Junction Temperature2) 3) ..................................................................................................................150ºC Lead Temperature ......................................................................................................................260ºC Storage Temperature .................................................................................................. -65ºC to +150ºC RECOMMENDED OPERATING CONDITIONS Input Voltage VIN ................................................................................................................4.7V to 40V Output Voltage Vout.............................................................................................................0.8V to VIN-3V Operating Junction Temperature ......................................................................................-40ºC to 125ºC THERMAL PERFORMANCE4） θJA θJc SOT23-6 ............................................................................................................................ 220...130ºC/W Note 1) 2) 3) 4) ： Exceeding these ratings may damage the device. The JW5026 guarantees robust performance from -40°C to 150°C junction temperature. The junction temperature range specification is assured by design, characterization and correlation with statistical process controls. The JW5026 includes thermal protection that is intended to protect the device in overload conditions. Thermal protection is active when junction temperature exceeds the maximum operating junction temperature. Continuous operation over the specified absolute maximum operating junction temperature may damage the device. Measured on JESD51-7, 4-layer PCB. JW5026 Rev.0.8 JoulWatt Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2 JW5026 JoulWatt ELECTRICAL CHARACTERISTICS VIN = 12V, TA = 25ºC, unless otherwise stated. Item Symbol VIN Undervoltage Lockout VIN_MIN Threshold VIN Undervoltage Lockout Condition Min. VIN rising VIN_MIN_HYST Hysteresis Typ. Max. Units 4.3 V 250 mV Shutdown Supply Current ISD VEN=0V 0.1 1 µA Supply Current IQ VEN=5V, VFB=1.2V 40 60 µA 800 824 mV Feedback Voltage Top Switch Resistance VFB 5) 4.7V