RT8202AGQW Richtek USA Inc, RT8202AGQW Datasheet
RT8202AGQW
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RT8202AGQW Summary of contents
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Single Synchronous Buck Controller General Description The RT8202/A/B PWM controller provides high efficiency, excellent transient response, and high DC output accuracy needed for stepping down high voltage batteries to generate low voltage CPU core, I/O, and chipset RAM supplies in ...
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RT8202/A/B Typical Application Circuit Functional Pin Description Pin No. Pin Name RT8202/A RT8202B 1 3 VOUT 2 4 VDD PGOOD Exposed Pad Exposed Pad GND (17) (15 ...
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Function Block Diagram VOUT TON SS(Internal) 0.75V V 115% V REF FB 70% V REF VDD GND DS8202/A/B-04 March 2011 TRIG On-time Compute 1-SHOT Comp + - - REF Latch + Latch ...
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RT8202/A/B Absolute Maximum Ratings Input Voltage, TON to GND -------------------------------------------------------------------------------------------- −0.3V to 32V BOOT to GND ------------------------------------------------------------------------------------------------------------- −0.3V to 38V PHASE to BOOT -------------------------------------------------------------------------------------------------------- −6V to 0.3V VDD, VDDP, VOUT, EN/DEM, FB, PGOOD to GND ------------------------------------------------------------- −0. UGATE ...
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Parameter FB Reference Voltage V FB Input Bias Current Output Voltage Range V On-Time Minimum Off-Time V Shutdown Discharge OUT Resistance Current Sensing ILIM Source Current Current Comparator Offset Current Limit Setting Range R Zero Crossing Threshold Fault Protection Current ...
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RT8202/A/B Parameter Logic I/O EN/DEM Logic Low Voltage EN/DEM Logic High Voltage EN/DEM Floating Voltage Logic Input Current PGOOD (upper side threshold decide by OV threshold) Trip Threshold (Falling) Fault Propagation Delay Output Low Voltage Leakage Current Note 1. Stresses ...
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Typical Operating Characteristics Efficiency vs. Output Current 100 90 80 DEM 0.001 0.01 Output Current (A) Efficiency vs. Output Current 100 90 80 DEM ...
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RT8202/A/B Standby Current vs. Input Voltage 400 390 380 370 360 350 340 330 320 310 300 290 280 Input Voltage (V) Power On from EN PWM-Mode V OUT (1V/Div) PHASE (10V/Div) EN/DEM (2V/Div) PGOOD ...
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OVP V OUT (1V/Div) UGATE (10V/Div) LGATE (5V/Div) Time (40μs/Div) Power On in Short Condition V OUT (1V/Div) I LOAD (10A/Div) UGATE (20V/Div) LGATE (5V/Div 12V Floating Time (800μs/Div) DS8202/A/B-04 March 2011 (20A/Div) (20V/Div) ...
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RT8202/A/B Application Information The RT8202/A/B PWM controller provides high efficiency, excellent transient response, and high DC output accuracy needed for stepping down high voltage batteries to generate low voltage CPU core, I/O, and chipset RAM supplies in notebook computers. Richtek ...
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I L Slope = ( OUT Figure 1. Boundary condition of CCM/DEM The switching waveforms may appear noisy and asynchronous when light loading causes diode-emulation operation, but this is a normal operating ...
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RT8202/A/B traces, making a Kelvin sense connection to the sense resistor. MOSFET Gate Driver (UGATE, LGATE) The high side driver is designed to drive high current, low R N-MOSFET(s). When configured as a floating DS(ON) driver, 5V bias voltage is ...
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Output Voltage Setting (FB) The output voltage can be adjusted from 0.75V to 3.3V by setting the feedback resistor R1 and R2 (Figure 5). Choose approximately 10kΩ, and solve for R1 using the equation: ⎡ ⎤ ⎛ ...
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RT8202/A/B Output Inductor Selection The switching frequency (on-time) and operating point (% ripple determine the inductor value as follows : IR × OUT L = × LOAD(MAX) ...
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For recommended operating conditions specification of RT8202/A/B, where T is the maximum junction J(MAX) temperature of the die (125°C) and T ambient temperature. The junction to ambient thermal resistance θ is layout dependent. For WQFN-16L 3x3 JA packages, the thermal ...
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RT8202/A/B Outline Dimension Symbol www.richtek.com 16 SEE DETAIL Note : The configuration of the Pin #1 identifier is ...
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Symbol DS8202/A/B-04 March 2011 SEE DETAIL Note : The configuration of the Pin #1 identifier is optional, but ...
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RT8202/A/B 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 ...