RT8290GSP Richtek USA Inc, RT8290GSP Datasheet
RT8290GSP
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RT8290GSP Summary of contents
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Synchronous Step-Down Converter General Description The RT8290 is a high efficiency synchronous step-down DC/DC converter that can deliver output current from 4.5V to 23V input supply. The RT8290's current mode architecture and external compensation ...
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... For automatic startup, connect this pin to VIN with a 100kΩ pull up resistor. Soft-Start Control Input. The soft-start period can be set by connecting a capacitor from SS to GND. A 0.1μF capacitor sets the soft-start period to 15.5ms typically. RT8290GSP : Product Number YMDNN : Date Code L (μH) C (μ ...
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Function Block Diagram VIN Internal Regulator Shutdown Comparator 1. 2.5V 3V Lockout Comparator V CC 7µA SS Absolute Maximum Ratings ----------------------------------------------------------------------------------------- −0.3V to 25V Supply Voltage Switching Voltage, SW ------------------------------------------------------------------------------------- −0.3V to ...
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RT8290 Electrical Characteristics (V = 12V 25°C unless otherwise specified Parameter Shutdown Supply Current Supply Current Feedback Voltage Error Amplifier Transconductance High Side Switch On-Resistance Low Side Switch On-Resistance High Side Switch Leakage Current Upper Switch ...
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Typical Operating Characteristics Efficiency vs. Output Current 100 4. 12V 23V 0.5 1 Output Current (A) Reference Voltage vs. Temperature ...
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RT8290 Current Limit vs. Temperature 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 -50 - Temprature ( ° C) Load Transient Response V OUT (200mV/Div) I OUT (2A/Div 12V Time (100μs/Div) Power On ...
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Power On from (2V/Div) V OUT (2V/Div) I OUT (2A/Div 12V Time (10ms/Div) DS8290-01 December 2010 V EN (2V/Div) V OUT (2V/Div) I OUT (2A/Div) = 3.3V OUT OUT RT8290 ...
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RT8290 Application Information The RT8290 is a synchronous high voltage buck converter that can support the input voltage range from 4.5V to 23V and the output current can 3A. Output Voltage Setting The resistive voltage divider allows ...
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Ferrite core material saturates “hard”, which means that inductance collapses abruptly when the peak design current is exceeded. The previous situation results in an abrupt increase in inductor ripple current and consequent output voltage ripple. Do not allow the core ...
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RT8290 Thermal Considerations For continuous operation, do not exceed the maximum operation junction temperature 125°C. The maximum power dissipation depends on the thermal resistance of IC package, PCB layout, the rate of surroundings airflow and temperature difference between junction to ...
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Table 2. Suggested Inductors for Typical Application Circuit Component Supplier Series TDK VLF10045 TAIYO YUDEN NR8040 Table 3. Suggested Capacitors for C Component Supplier MURATA GRM31CR61E106K TDK C3225X5R1E106K TAIYO YUDEN TMK316BJ106ML MURATA GRM31CR60J476M TDK C3225X5R0J476M TAIYO YUDEN EMK325BJ476MM MURATA GRM32ER71C226M ...
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RT8290 Outline Dimension EXPOSED THERMAL PAD (Bottom of Package) Symbol Option 1 Option 2 Richtek Technology Corporation Headquarter 5F, No. 20, Taiyuen Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Fax: ...