Evaluates: MAX5092B/92A/MAX5093B/93A 19-1018 Rev 0 10/07 MAX5092 Evaluation Kit General Description Features The MAX5092 evaluation kit (EV kit) is a fully assembled Wide 4V to 72V Input-Voltage Range and tested surface-mount printed-circuit board (PCB) Preset 5V LDO Output Voltage demonstrating the MAX5092B, a low-dropout (LDO) reg- ulator with internal boost preregulator. The EV kit oper- Preset 7V Boost Preregulator Output Voltage ates from a 4V to 72V input voltage and delivers up to Adjustable LDO Output Voltage from 1.5V to 9V 250mA from a preprogrammed 7V boost preregulator output (BSOUT) and 5V LDO output (VOUT). Both the Adjustable Boost Preregulator Output Voltage Up LDO and the boost preregulator output voltages are pro- to 11V grammable using external resistors. Jumper-Programmable ENABLE and HOLD The MAX5092 EV kit features include on-board jumper Functions settings that allow for evaluation of the ENABLE and HOLD functions of the MAX5092, a power-on-reset out- Programmable HOLD Time Period put (RESET) to indicate LDO out-of-regulation condi- Surface-Mount Components tions, and a programmable RESET time period. Lead-Free Evaluation Kit The MAX5092 EV kit can be configured to demonstrate the MAX5092A (3.3V LDO output) or the MAX5093A/ Fully Assembled and Tested MAX5093B. To evaluate the MAX5092A, replace the IC with the MAX5092A. To evaluate the MAX5093 , the addition of an external Schottky diode is required. See the Configuring for the MAX5093 section to modify the Ordering Information MAX5092 EV kit for the MAX5093 . The EV kit comes fully assembled and tested, is quali- PART TYPE fied lead-free, and is rated for an operating temperature MAX5092EVKIT+ EV Kit range of 0C to +70C. +Denotes lead-free and RoHS-compliant. Warning: The MAX5092 EV kit is designed to operate Note: To evaluate the MAX5092A, request a MAX5092AATE+ with high voltages. Dangerous voltages can be present free sample with the MAX5092EVKIT+. To evaluate the on this EV kit and on equipment connected to it. Users MAX5093 , request a MAX5093AATE+/MAX5093BATE+ free who power up this EV kit, or the power sources con- sample with the MAX5092EVKIT+. nected to it, must be careful to follow safety procedures appropriate when working with high-voltage electrical equipment. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 1F 10%, 16V X7R ceramic 47F, 80V, 0.7 SMT Al electrolytic capacitor (0603) C1 1 capacitor (G) C6 1 TDK 1608X7R1C105K or equivalent Panasonic EEEFK1K470P 10F 10%, 25V X5R ceramic 1F 10%, 100V X7R ceramic capacitor (1206) capacitors (1210) C7 1 C2, C3 2 Murata GRM31CR61E106K or Murata GRM32CR72A105K or equivalent equivalent C8 0 Not ins tal l ed, cer am i c cap acito r ( 0603) 22F, 80V, 1.3 SMT Al electrolytic C4 1 capacitor (F) Not installed (SMB) Panasonic EEEFK1K220P Recommended diode: 2A, 100V D1 0 Schottky diode 0.22F 10%, 16V X7R ceramic Diodes Inc. B2100 or equivalent C5 1 capacitor (0603) TDK C1608X7R1C224K or equivalent Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.MAX5092 Evaluation Kit Component List (continued) DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION R2, R5 2 0 resistors (0603) 3-pin headers 36-pin headers, 0.1 centers R3 1 100k 5% resistor (0603) JU1, JU2 2 (comes in 36-pin strips, cut to fit) MAX5092BATE+ Sullins PEC36SAAN U1 1 (16-pin, 5mm x 5mm, Thin QFN) Digi-Key S1012E-36-ND Shunt 4.7H, 4.8A 18m inductor 2 Sullins STC02SYAN L1 1 (9.4mm x 12.95mm x 5.21mm) Digi-Key S9000-ND Coilcraft DO3316P-472ML 1 PCB: MAX5092 Evaluation Kit+ R1, R4 0 Not installed (0603) Component Suppliers SUPPLIER COMPONENTS PHONE WEBSITE Coilcraft, Inc. Inductors 847-639-6400 www.coilcraft.com Digi-Key Headers, jumpers 800-344-4539 www.digikey.com Murata Mfg. Co., Ltd. Capacitors 770-436-1300 www.murata.com Panasonic Corp. Resistors, capacitors 714-373-7366 www.maco.panasonic.co.jp Sullins Electronics Headers, jumpers 760-744-0125 www.sullinselectronics.com TDK Corp. Capacitors 888-835-6646 www.component.tdk.com Note: Indicate that you are using the MAX5092A, MAX5092B, MAX5093A, or MAX5093B when contacting these component suppliers. 1) Preset PS1 to +4V. Turn off PS1. Caution: Do not Quick Start turn on the power supply until all connections are Recommended Equipment complete. Before beginning, the following equipment is needed: 2) Connect the positive terminal of PS1 to the VIN pad One variable-DC power supply (further referred to located on the EV kit. Connect the negative terminal as PS1) capable of supplying up to 72V at 1A of PS1 to the GND pad located on the EV kit. One adjustable load capable of sinking 250mA at 5V 3) Connect the positive input of one DVM to the VIN pad located on the EV kit. Connect the negative Three digital voltmeters (DVMs) input of that DVM to the GND pad located on the EV One ammeter (for optional low-quiescent input cur- kit. This DVM measures the EV kit input voltage. rent evaluation) 4) Connect the positive input of the second DVM to Procedure the BSOUT pad located on the EV kit. Connect the The MAX5092 EV kit is fully assembled and tested. negative input of that DVM to the GND pad located Follow the steps below to verify board operation. See on the EV kit. This DVM measures the output volt- Figure 1 for test setup. age at the boost converter output. Warning: The MAX5092 EV kit is designed to operate 5) Connect the positive input of the third DVM to the with high voltages. Dangerous voltages can be present VOUT pad located on the EV kit. Connect the nega- on this EV kit and on equipment connected to it. Users tive input of that DVM to the GND pad located on who power up this EV kit, or the power sources connected the EV kit. This DVM measures the output voltage at to it, must be careful to follow safety procedures appropri- the LDO output. ate when working with high-voltage electrical equipment. 2 Evaluates: MAX5092B/92A/MAX5093B/93A