JW5015A

JW5015A 2A, 40V Synchronous Step-Down Converter Parameters Subject to Change Without Notice FEATURES FEATURES









DESCRIPTION 3.6 V to 40 V operating input range 2A output current Up to 94% efficiency High efficiency (>78%) at light load Internal Soft-Start Fixed 440kHz Switching frequency Input under voltage lockout Available in thermally enhanced ESOP8 package Start-up current run-away protection Short circuit protection Thermal protection APPLICATIONS




Distributed Power Systems Networking Systems FPGA, DSP, ASIC Power Supplies Green Electronics/ Appliances Notebook Computers The JW5015A is a current mode monolithic buck switching regulator. Operating with an input range of 3.6V~40V, the JW5015A delivers 2A 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, regulators operate in low frequency to maintain high efficiency and low output ripple. Current mode control provides tight load transient response and cycle-by-cycle current limit. The JW5015A guarantees robustness with short-circuit protection, thermal protection, start-up current run-away protection, and input under voltage lockout. The JW5015A is available in 8-pin ESOP package, which provides a compact solution with minimal external components. The package has an exposed pad for low thermal resistance. Company’s Logo is Protected, “JW ” and “JOULWATT” are Registered Trademarks of JoulWatt technology Inc. TYPICAL APPLICATION 5V/2A Step Down Regulators Efficiency vs Load Current (Vout = 5V) 100nF 10µH Vin 5.1V TO 40V VIN BST SW EN JW5015A FB Vout 5V/2A 100k 96.00 118k Vin=12V 94.00 BIAS / VD GND NC NC 22k 47µF EFFICIENCY(%) 92.00 10uF 90.00 Vin=24V 88.00 86.00 84.00 82.00 80.00 78.00 2.2µF 76.00 0 0.5 1 1.5 2 LOAD CURRENT(A) JoulWatt Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. JW5015A Rev.0.82 1 JW5015A 2A, 40V Synchronous Step-Down Converter ORDER INFORMATION PART MARKING PACKAGE DESCRIPTION JW5015A ESOP8 Top Marking Package Form Tape and reel packaging: JW5015 2500 pieces/tape 3P059C IC tube: 100 pieces/tube PIN CONFIGURATION CONFIGURATION TOP VIEW SW 1 8 VIN 7 EN BST 2 9 GND BIAS / VD 3 6 NC FB 4 5 NC ESOP 8 EXPOSED PAD(PIN 9) IS GND, MUST BE SOLDERED TO PCB ABSOLUTE MAXIMUM RATING VIN, EN, SW Pin BST Pin .................. -0.3V ~ 44V ................... SW-0.3V ~ SW+5V All other Pins .................... -0.3V ~ 6V Junction Temperature. .................150ºC Lead Temperature ...................260 ºC Storage Temperature .......－65 ºC ~ +150 ºC RECOMMENDED OPERATING OPERATING CONDITIONS Input Voltage VIN ................. 3.6V ~ 40V Output Voltage Vout............... 0.8V ~ 37V Operating Junction Temperature... -40ºC ~ 125ºC JW5015A Rev.0.82 2 THERMAL RESISTANCE θJA θJc ESOP8 ..........................50....10..ºC /W Note： Note： 1) Exceeding these ratings may damage the device. 2) The JW5015A 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. 3) The JW5015A 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. 4) Measured on JESD51-7, 4-layer PCB. JoulWatt Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. JW5015A 2A, 40V Synchronous Step-Down Converter ELECTRICAL CHARATERISTICS VIN = 24V, TA = 25ºC, unless otherwise stated. Item Symbol Condition VIN_MIN VIN falling 3.6 V VIN_MIN_HYST VIN rising 160 mV Shutdown Supply Current ISD VEN=0V 0.07 µA Supply Current IQ VEN=5V, VFB=1V 74 µA VFB 3.6V