RT8020GQW Richtek USA Inc, RT8020GQW Datasheet
RT8020GQW
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RT8020GQW Summary of contents
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Dual High-Efficiency PWM Step-Down DC/DC Converter General Description The RT8020 is a dual high-efficiency Pulse-Width- Modulated (PWM) step-down DC/DC converter capable of delivering 1A output current over a wide input voltage range from 2.5V to 5.5V, the RT8020 ...
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RT8020 Typical Application Circuit V IN2 C IN2 4.7µF R12 C11 22pF V OUT1 Rx1 OUTx REF Rx2 V V OUT1 V = 1.2V, 1.3V, 1.8V, 2.5V or 3.3V OUTx www.richtek.com 2 L2 2.2µH RT8020 1 VIN2 ...
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Functional Pin Description Pin No. Pin Name 1 VIN2 2 LX2 3, 9, GND Exposed Pad (13) 4 FB1 5, 11 NC1, NC2 6 EN1 7 VIN1 8 LX1 10 FB2 12 EN2 Function Block Diagram Slope Compensation Amplifier FBx ...
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RT8020 Absolute Maximum Ratings Supply Input Voltage IN1 IN2 EN1, FB1, LX1, EN2, FB2 and LX2 Pin Voltage -------------------------------------------------------------- 0. Power Dissipation WDFN-12L 3x3 ...
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Parameter Output Voltage Adjustable Accuracy FB Input Current R of P-MOSFET DS(ON N-MOSFET DS(ON) P-Channel Current Limit EN Input Voltage Logic-High EN Input Voltage Logic-Low Oscillator Frequency Thermal Shutdown Temperature Maximum Duty Cycle LX Leakage Current Note 1. ...
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RT8020 Typical Operating Characteristics Efficiency vs. Output Current 100 3.3V 4 OUT 0 ...
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Output Voltage vs. Loading Current 1.230 1.225 1.220 1.215 V 1.210 1.205 V 1.200 1.195 1.190 1.185 1.180 0 0.1 0.2 0.3 0.4 Loading Current (A) Switching Frequency vs. Input Voltage 1.60 1.55 1.50 1.45 1.40 1.35 1.30 1.25 V ...
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RT8020 Power On from 3.6V 1.2V OUT V EN (2V/Div) V OUT (1V/Div (500mA/Div) Time (100μs/Div) Power On from 3.6V 1.2V OUT V IN ...
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Load Transient Response V = 5.0V 1.2V OUT V OUT (50mV/Div) I OUT (500mA/Div) Time (50μs/Div) Ripple V = 3.6V 1.2V OUT V OUT (10mV/Div (2V/Div) Time (500ns/Div) DS8020-04 February ...
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RT8020 Applications Information The basic RT8020 application circuit is shown in Typical Application Circuit. External component selection is determined by the maximum load current and begins with the selection of the inductor value and operating frequency followed by C and ...
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The output ripple is highest at maximum input voltage since I increases with input voltage. Multiple capacitors L placed in parallel may be needed to meet the ESR and RMS current handling requirements. Dry tantalum, special polymer, aluminum electrolytic and ...
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RT8020 and the synchronous switch. Thus, the series resistance looking into the LX pin is a function of both top and bottom MOSFET R and the duty cycle (DC) is shown as DS(ON) follows : ...
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Component Supplier TAIYO YUDEN TAIYO YUDEN Sumida CDRH2D14 Sumida CDRH2D14 GOTREND GOTREND Component Supplier TDK TDK MURATA MURATA TAIYO YUDEN TAIYO YUDEN TAIYO YUDEN DS8020-04 February 2011 Table 1. Recommended Inductors Inductance Series ( H) NR 3015 2.2 NR 3015 ...
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RT8020 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 ...