AOZ1019-EVA AOSMD | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 4
Technical content
Features
4.5V to 16V operating input voltage range Output voltage was preset to 3.3V, adjustable down to 0.8V 2A continuous output current Fixed 500kHz PWM operation Internal soft start Cycle-by-cycle current limit Short-circuit protection Thermal shutdown
Applications
Point of load DC/DC conversion PCIe graphics cards Set top boxes DVD drives and HDD LCD panels Cable modems Telecom/networking/datacom equipment Evaluation Board Schematic Figure 1. LX VIN VOUT +3.3V Output @2A VIN From µPC FB PGND EN COMP AGND C2, C3 22µF Ceramic R C CC D1 L1 4.7µH AOZ1019 22µF Ceramic 1µF
Rev. 1.0 October 2007 www.aosmd.com Page 2 of 4 Component List Note: 1. Output voltage is set by R1; R1 = . Table 1 shows that the value of R1 with typical output voltages. Table 1. Ref Designation Value Description Manufacturer Part Number Manufacturer C1 22µF Ceramic Cap, 22µF , 25V, 1210, X5R GRM32ER61E226KE15L Murata C2 22µF Ceramic Cap, 22µF , 25V, 1210, X5R GRM32ER61E226KE15L C3 22µF Ceramic Cap, 22µF , 25V, 1210, X5R GRM32ER61E226KE15L C4 NU C5 1000pF Ceramic Cap, 1000pF , 50V, 0603, X7R GRM188R71E102K C6 1µF Ceramic Cap, 1µF , 25V, 0603, X5R GRM188R61E105KA12D C C 1000pF Ceramic Cap, 1000pF , 50V, 0603, X7R GRM188R71E102K (1) 31.6k Ω Thick Film Res, 1%, 31.6k, 0603 CRCW060331K6FKTAP DALE R2 20k Ω Thick Film Res, 1%, 20k, 0603 CRCW060321K0FKTAP R C 20k Ω Thick Film Res, 1%, 20k, 0603 CRCW060321K0FKTAP L1 4.7µH Inductor, 4.7µH, 2.9A LQH55DN3R3M03 Murata D1 Schottky Barrier Diode, 2A, 30V, SMA B230A-FDICT -ND DIODES U1 AOZ1019AI Buck Regulator IC, 2A, 16V AOZ1019AI AOS V O (V) R1 (k Ω 1.2 4.99 1.8 12.7 2.5 21.5 3.3 31.6 5.0 52.3 81 0 V O×()+
Rev. 1.0 October 2007 www.aosmd.com Page 4 of 4 Quick Start Guide 1. Connect the terminals of load to +V OUT pins and GND pins. Set load current to between 0A and 2A. 2. Connect the DC power supply to +V IN pin and GND pins. Set DC power supply voltage to between 4.5V and 16V. 3. Connect EN pin to +V IN or any voltage source which is higher than 2V and less than 16V. 4. Turn on DC power supply and evaluation circuit will start. 5. Measure input voltage at the +V IN pin and GND pins to eliminate the effect of voltage drop on wire between DC power supply and evaluation board. 6. Measure output voltage at the +V OUT pin and GND pins to eliminate the effect of voltage drop on wire between load and evaluation board. 7. Use an oscilloscope to monitor input ripple voltage right across input capacitor C1. 8. Use an oscilloscope to monitor output ripple voltage right across output capacitor C2. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. This datasheet contains preliminary data; supplementary data may be published at a later date. Alpha & Omega Semiconductor reserves the right to make changes at any time without notice. LIFE SUPPORT POLICY ALPHA & OMEGA SEMICONDUCTOR PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS.