USERS MANUAL ISL8033DEMO1Z AN1611 Rev 1.00 Dual 3A Low Quiescent Current, High Efficiency, Synchronous Buck Regulator Jul 6, 2016 Demonstration Board Description Recommended Equipment The ISL8033DEMO1Z kit is intended for use by individuals with The following materials are recommended to perform testing: requirements for Point-of-Load applications sourcing from 0V to 10V power supply with at least 3A source current 2.85V to 6V. The ISL8033DEMO1Z demonstration board is capability or 5V battery used to demonstrate the performance of the ISL8033 low Electronic loads capable of sinking current up to 3A quiescent current mode converter. Digital Multimeters (DMMs) The ISL8033 is offered in a 4mmx4mm 24 Ld QFN package with 1mm maximum height. The complete converter occupies 100MHz quad-trace oscilloscope 2 less than 147.742mm . Signal generator Key Features Quick Setup Guide Dual 3A high efficiency synchronous buck regulator with up 1. Ensure that the circuit is correctly connected to the supply to 95% efficiency and loads prior to applying any power. Power-Goods (PG) output with 1.5ms delay 2. Connect the bias supply to VIN, the plus terminal to VIN and 2.85V to 6V supply voltage the negative return to P1. 3. Turn on the power supply. 2% output accuracy over temperature/load/line 4. Verify the output voltage is 1.8V for V and 1.8V for Start-up with prebiased output OUT1 V OUT2. External synchronization up to 6MHz Typical 8A logic controlled shutdown current Ordering Information 100% maximum duty cycle for lowest dropout Internal current mode compensation PART NUMBER DESCRIPTION Peak current limiting, hiccup mode short-circuit protection ISL8033DEMO1Z ISL8033 demonstration board and over-temperature protection Negative current detection and protection Adjustable peak overload current FIGURE 1. ISL8033DEMO1Z SCHEMATIC AN1611 Rev 1.00 Page 1 of 4 Jul 6, 2016ISL8033DEMO1Z FIGURE 3. ISL8033DEMO1Z BOTTOM OF BOARD (Note 1) FIGURE 2. ISL8033DEMO1Z TOP OF BOARD (Note 1) NOTE: 1. ISL8033DEMO1Z is the new part number for the board formerly labeled ISL8033EVAL2Z. If your board is branded with ISL8033EVAL2Z, it is the ISL8033DEMO1Z demonstration board. Bill of Materials REFERENCE DESIGNATOR DESCRIPTION MFR MFR PART PWB-PCB, ISL8033EVAL2Z, REVA, ROHS LIANCHUANG ISL8033EVAL2ZREVAPCB C3, C4, C9, C11, CIN1, CAP, SMD, 0805, 22F, 6.3V, 20%, X5R, ROHS TDK C2012X5R0J226M CIN2 C5, C10 CAP, SMD, 0402, 47pF, 50V, 5%, NPO, ROHS MURATA GRM36COG470J050AQ L1, L2 COIL-PWR INDUCTOR, SMD, 4mm 1.5H, 20%, 4.1A, 14.4m , ROHS COILCRAFT (Note 2) XFL4020-152MEC TDK (Note 2) SPM4020T-1R5M-LR U1 IC-DUAL 3A BUCK REGULATOR, 24P, QFN, 4X4, ROHS INTERSIL ISL8033IRZ R2 RES, SMD, 0402, 0 , 1/16W, 5%, TF, ROHS VENKEL CR0402-16W-00T RF11, RF21 RES, SMD, 0402, 100k, 1/16W, 1%, TF, ROHS PANASONIC ERJ2RKF1003 RF12, RF22 RES, SMD, 0402, 124k, 1/16W, 1%, TF, ROHS PANASONIC ERJ-2RKF1243X R1 RES, SMD, 0402, DNP, TF, ROHS NOTE: 2. Two manufacturers are provided as options for the inductor. AN1611 Rev 1.00 Page 2 of 4 Jul 6, 2016