RT8260A RICHTEK [Richtek Technology Corporation], RT8260A Datasheet
RT8260A
Related parts for RT8260A
RT8260A Summary of contents
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... Step-Down Converter General Description The RT8260A is a high voltage buck converter that can support the input voltage range from 4.5V to 24V and the output current can 1.8A. Current Mode operation provides fast transient response and eases loop stabilization. The chip also provides protection functions such as cycle- by-cycle current limiting and thermal shutdown protection ...
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... RT8260A Table 1. Recommended Component Selection V (V) 1.2 1.8 OUT L1 (μ (kΩ) 124 49.9 R1 (kΩ (μ OUT Functional Pin Description Pin No. Pin Name VIN GND 9 (Exposed Pad) 7 BOOT Function Block Diagram VIN 1µA 1.1V 10k EN Shutdown ...
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... 0. DS(ON 0V − 4.8V LIM BOOT Rising SHDN 2V (Not Switching RT8260A + 0.3V) IN − 0.3V 6V Min Typ Max Unit 0.79 0.8 0.81 V μA -- 0.1 0.3 Ω -- 0.3 -- μ 2.2 2 1.2 1.4 1.6 MHz -- 100 -- ns 3.9 4.2 4 ...
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... RT8260A Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability. Note 2. θ ...
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... Duty Cycle (%) DS8260A-03 March 2011 V = 12V 24V OUT 0.9 1.2 1.5 1 12V IN 0.9 1.2 1.5 1 RT8260A Efficiency vs. Load Current 100 0.3 0.6 0.9 Load Current (A) Reference Voltage vs. Temperature 0.815 0.810 0.805 0.800 0.795 0.790 0.785 -50 - Temperature (°C) Current Limit vs. Temperature 3 ...
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... RT8260A Switching Frequency vs. Temperature 1.50 1.45 1.40 1.35 1.30 1.25 1.20 -50 - Temperature (°C) Load Transient Response V OUT (100mV/Div) I OUT (1A/Div 12V Time (100μs/Div) Output Ripple V OUT (10mV/Div (5V/Div (1A/Div 12V Time (250ns/Div) www.richtek.com 12V 0.3A IN OUT 50 75 100 125 (100mV/Div ...
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... Power On from (2V/Div) V OUT (2V/Div (2A/Div 12V Time (250μs/Div) DS8260A-03 March 2011 V (2V/Div) V (2V/Div) (2A/Div) = 3.3V 1.8A OUT OUT RT8260A Power Off from EN EN OUT 12V OUT Time (50μs/Div) = 3.3V 1.8A OUT www.richtek.com 7 ...
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... RT8260A Application Information The RT8260A is a high voltage buck converter that can support the input voltage range from 4.5V to 24V and the output current can 1.8A. Output Voltage Setting The resistive voltage divider allows the FB pin to sense a fraction of the output voltage as shown in Figure 1. ...
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... OUT (ESR) also begins to charge or discharge LOAD generating a feedback error signal for the regulator to to its steady-state value. During this recovery OUT can be monitored for overshoot or ringing that OUT . But this method will decrease the driving capability RT8260A www.richtek.com 9 ...
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... Connect GND to a ground plane for noise reduction and thermal dissipation BOOT C L BOOT 4.7µH 10nF R * B230A 49. 16k 0.90 0.75 0.60 0.45 0.30 0.15 0. Ambient Temperature (°C) Figure 4. Derating Curves for RT8260A Packages DS8260A-03 March 2011 V OUT 3.3V/1.8A C OUT 22µF Four-Layer PCB 100 125 ...
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... Part No. MURATA GRM31CR61E106K TDK C3225X5R1E106K TMK316BJ106ML MURATA GRM31CR61C226M TDK C3225X5R1C226M EMK316BJ226ML The feedback components must be connected as close to the device as possible BOOT 7 GND Capacitance ( F) Case Size RT8260A 1206 1206 1206 1206 1206 1206 www.richtek.com 11 ...
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... RT8260A Outline Dimension Symbol Richtek Technology Corporation Headquarter 5F, No. 20, Taiyuen Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 Information that is provided by Richtek Technology Corporation is believed to be accurate and reliable. Richtek reserves the right to make any change in circuit design, specification or other related things if necessary without notice at any time ...