AOZ1021AI Alpha & Omega Semiconductor Inc, AOZ1021AI Datasheet
AOZ1021AI
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AOZ1021AI Summary of contents
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General Description The AOZ1021 is a synchronous high efficiency, simple to use, 3A buck regulator. The AOZ1021 works from a 4.5V to 16V input voltage range, and provides continuous output current with an output voltage adjustable ...
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... Ordering Information Part Number Ambient Temperature Range AOZ1021AI -40°C to +85°C AOZ1021AIL -40°C to +85°C AOS Green Products use reduced levels of Halogens, and are also RoHS compliant. Please visit www.aosmd.com/web/quality/rohs_compliant.jsp Pin Configuration Pin Description Pin Number Pin Name 1 PGND Power ground. Electrically needs to be connected to AGND. ...
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Block Diagram UVLO EN & POR Regulator Reference Softstart & Bias + 0.8V EAmp FB – COMP Frequency Foldback Comparator + – 0.2V Absolute Maximum Ratings Exceeding the Absolute Maximum Ratings may damage the device. Parameter Supply Voltage (V ) ...
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Electrical Characteristics T = 25° 12V 3.3V unless otherwise specified OUT Symbol Parameter V Supply Voltage IN V Input Under-Voltage Lockout Threshold UVLO I Supply Current (Quiescent Shutdown Supply ...
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Typical Performance Characteristics Circuit of Figure 25° Light Load Operation 1s/div Startup to Full Load 1ms/div 50% to 100% Load Transient 100s/div Rev. 1.7 November 2010 = 12V 3.3V ...
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Efficiency AOZ1021 Efficiency Efficiency (V = 12V) vs. Load Current IN 100 0.5 1.0 1.5 Load Current (A) Thermal Derating Curves Derating Curve at 5V/6V Input 5 4 1.2V OUTPUT 3 2 ...
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Detailed Description The AOZ1021 is a current-mode, step down regulator with integrated high-side PMOS switch and a low-side NMOS switch. It operates from a 4.5V to 16V input voltage range and supplies load current. The duty ...
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The combination of R and R should be large enough avoid drawing excessive current from the output, which will cause power loss. Since the switch duty cycle can be as high as 100%, the maximum output voltage ...
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For reliable operation and best performance, the input capacitors must have current rating higher than I at worst operating conditions. Ceramic capacitors are preferred for input capacitors because of their low ESR and high current rating. Depending on the application ...
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Loop Compensation The AOZ1021 employs peak current mode control for easy use and fast transient response. Peak current mode control eliminates the double pole effect of the output L&C filter. It greatly simplifies the compensation loop design. With peak current ...
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Thermal Management and Layout Consideration In the AOZ1021 buck regulator circuit, high pulsing current flows through two circuit loops. The first loop starts from the input capacitors, to the V pins, to the filter inductor, to the output capacitor and ...
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PGND 1 VIN 2 AGND Rev. 1.7 November 2010 COMP Vo Figure 3. AOZ1021A (SO-8) PCB Layout www.aosmd.com AOZ1021 L1 Page ...
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Package Dimensions, SO- 7° (4x) 0.1 b 2.20 5.74 1.27 0.80 Unit: mm Notes: 1. All dimensions are in millimeters. 2. Dimensions are inclusive of plating 3. Package body sizes exclude mold flash and ...
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Tape and Reel Dimensions SO-8 Carrier Tape Unit: mm Package SO-8 6.40 5.20 2.10 1.60 ±0.10 ±0.10 ±0.10 ±0.10 (12mm) SO-8 Reel Tape Size Reel Size M N 12mm ...
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... Part Marking AOZ1021AI Fab & Assembly Location AOZ1021AIL Fab & Assembly Location This data sheet 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 & ...