RT9069-33GQU Evaluation Board your power partner. 36V, 2μA IQ, 200mA Low Dropout Voltage Linear Regulator Purpose The RT9069 is stable with the ceramic output capacitor over its wide input range from 3.5V to 36V and the entire range of output load current (0mA to 200mA).This document explains the function and use of the RT9069 evaluation board (EVB), and provides information to enable operation, modification of the evaluation board and circuit to suit individual requirements. Table of Contents Purpose ................................................................................................................................................................. 1 Introduction............................................................................................................................................................ 2 Key Performance Summary Table .......................................................................................................................... 2 Bench Test Setup Conditions ................................................................................................................................. 3 Schematic, Bill of Materials & Board Layout ........................................................................................................... 4 More Information.................................................................................................................................................... 6 Important Notice for Richtek Evaluation Board ....................................................................................................... 6 EVB_RT9069-33GQU-00 October 2015 1 http://www.richtek.com RT9069-33GQU Evaluation Board your power partner. Introduction General Product Information The RT9069 is a low-dropout (LDO) voltage regulators with enable function offering the benefits of high input voltage, low-dropout voltage, low-power consumption, and miniaturized packaging. The features of low quiescent current as low as 2μA and zero disable current is ideal for powering the battery equipment to a longer service life. The RT9069 is stable with the ceramic output capacitor over its wide input range from 3.5V to 36V and the entire range of output load current (0mA to 200mA). Product Feature 2μA Ground Current at no Load ±2% Output Accuracy 200mA Output Current with EN Zero Disable Current Maximum Operating Input Voltage 36V Dropout Voltage : 0.2V at 10mA / VIN 5V Stable with Ceramic or Tantalum Capacitor Current Limit Protection Over-Temperature Protection RoHS Compliant and Halogen Free Key Performance Summary Table Key Features Evaluation Board Number : PCB031_V1 Input Voltage Range 3.5V to 36V Max Output Current 200mA Default Output Voltage 3.3V Default Marking & Package Type RT9069-33GQU, UDFN-6L1.6x1.6 EVB_RT9069-33GQU-00 October 2015 2 http://www.richtek.com RT9069-33GQU Evaluation Board your power partner. Bench Test Setup Conditions Headers Description and Placement Please carefully inspect the EVB IC and external components, comparing them to the following Bill of Materials, to ensure that all components are installed and undamaged. If any components are missing or damaged during transportation, please contact the distributor or send e-mail to [email protected] Test Points The EVB is provided with the test points and pin names listed in the table below. Test point/ Pin name Signal Comment (expected waveforms or voltage levels on test points) VCC Input voltage The RT9069 is a high input voltage linear regulator designed especially for low external component systems. The input voltage range is from 3.5V to 36V. EN Enable Control Input. The RT9069 delivers the output power when it is set to enable state. When it works in disable state, there is no output power and the operation quiescent current is zero. VOUT Output of the Regulator. The RT9069 builds in a P-MOSFET output transistor which provides a low switch-on resistance for low dropout voltage applications. GND Ground Ground. Power-up & Measurement Procedure 1. Connect input power (3.5V < VIN < 36V) and input ground to VIN and GND test pins respectively. 2. Connect positive end and negative terminals of load to VOUT and GND test pins respectively. 3. There is a 3-pin header “EN” for enable control. To use a jumper at “H” option to tie EN test pin to input power VIN for enabling the device. Inversely, to use a jumper at “L” option to tie EN test pin and ground GND for disabling the device. 4. Verify the output voltage (approximately 1.0V) between VOUT and GND. 5. Connect an external load up to 50mA to the VOUT and GND terminals and verify the output voltage and current. EVB_RT9069-33GQU-00 October 2015 3 http://www.richtek.com RT9069-33GQU Evaluation Board your power partner. Schematic, Bill of Materials & Board Layout EVB Schematic Diagram GP2 GP1 VOUT 1 1 VIN VOUT R1 10K VIN U1 J1 VCC GND 6 1 2 3 1 2 1 C1 1uF 2 NC GND NC 1 2 3 5 ON OFF C2 1uF EN VOUT VOUT EN 4 EN 1 EN 7 3 GND TP2 RT9069 GP3 GP4 1 1 GND GND Bill of Materials Reference Qty Part Number Description Package Manufacture U1 1 RT9069-33GQU LDO UDFN-6L 1.6x1.6 RICHTEK C1, C2 2 GRM31CR71E106KA12L 1µF/50V/X7R C-1206 MURATA R1 1 10k R-0603 EVB_RT9069-33GQU-00 October 2015 4 http://www.richtek.com RT9069-33GQU Evaluation Board your power partner. PCB Layout Top View Bottom View EVB_RT9069-33GQU-00 October 2015 5 http://www.richtek.com RT9069-33GQU Evaluation Board your power partner. More Information For more information, please find the related datasheet or application notes from Richtek website http://www.richtek.com. Important Notice for Richtek Evaluation Board THIS DOCUMENT IS FOR REFERENCE ONLY, NOTHING CONTAINED IN THIS DOCUMENT SHALL BE CONSTRUED AS RICHTEK’S WARRANTY, EXPRESS OR IMPLIED, UNDER CONTRACT, TORT OR STATUTORY, WITH RESPECT TO THE PRESENTATION HEREIN. IN NO EVENT SHALL RICHTEK BE LIABLE TO BUYER OR USER FOR ANY AND ALL DAMAGES INCLUDING WITHOUT LIMITATION TO DIRECT, INDIRECT, SPECIAL, PUNITIVE OR CONSEQUENTIAL DAMAGES. EVB_RT9069-33GQU-00 October 2015 6 http://www.richtek.com