RT8058PQW Richtek Technology Corporation, RT8058PQW Datasheet
RT8058PQW
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RT8058PQW Summary of contents
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High Efficiency PWM Step-Down DC/DC Converter General Description The RT8058 is a current mode PWM step-down converter. The chip is ideal for fixed frequency and low ripple applications over full range of load conditions. Its input voltage range ...
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RT8058 Typical Application Circuit V IN 2.6V to 5.5V 10uF Functional Pin Description Pin No. Pin Name PGND Exposed Pad (17 GND VDD 10, 11, 12 PVDD ...
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Absolute Maximum Ratings Supply Input Voltage VDD, PVDD ------------------------------------------------------------------------------------ 0. Pin Switch Voltage -------------------------------------------------------------------------------------------------- 0. Other I/O Pin Voltage --------------------------------------------------------------------------------------------------- 0. Power Dissipation ...
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RT8058 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 ...
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Typical Operating Characteristics Efficiency vs. Output Current 100 1.8V 3 OUT 0 0 500 1000 Output Current (mA) Output Voltage vs. Outout Current 1.2000 1.1998 ...
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RT8058 Quiescent Current vs. Input Voltage 450 400 350 300 250 2.7 3.1 3.5 3.9 Input Voltage(V) Peak Current limit vs. Input Voltage 3.3 3.2 3.1 3.0 2.9 2.8 2.7 3.1 3.5 3.9 Input Voltage (V) Load Transient Response V ...
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Load Transient Response V = 3.3V 1.2V OUT V OUT (50mV/Div) I OUT (1A/Div) Time (25 s/Div) Load Transient Response 1.2V OUT V OUT (50mV/Div) I OUT (1A/Div) Time ...
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RT8058 Output Ripple Noise V = 3.3V 1.2V OUT V OUT (5mV/Div (5V/Div) I OUT (1A/Div) Time (500ns/Div) Output Ripple Noise 1.2V OUT V OUT (5mV/Div) V ...
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Soft-Start & Inrush Current V = 3.3V 1.2V OUT V IN (2V/Div) V OUT (1V/Div (1A/Div) Time (2.5ms/Div) DS8058-02 August 2007 Preliminary = 1.5A OUT (2V/Div) V (1V/Div) (1A/Div) Soft-Start & Inrush Current ...
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RT8058 Application Information Function Description The RT8058 is a 1MHz constant frequency, current mode PWM step-down converter. High switching frequency and high efficiency make it suitable for applications where high efficiency and small size are critical. Frequency compensation is done ...
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Short-Circuit Protection At overload condition, current mode operation provides cycle-by-cycle current limit to protect the internal power switches. When the output is shorted to ground, the inductor current will decays very slowly during a single switching cycle. A current runaway ...
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RT8058 The selection determined by the effective series OUT resistance (ESR) that is required to minimize voltage ripple and load step transients, as well as the amount of bulk capacitance that is necessary to ensure that the ...
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I R losses are calculated from the resistances of the internal switches, R and external inductor R SW continuous mode the average output current flowing through inductor L is “chopped” between the main switch and the synchronous switch. ...
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RT8058 Figure 3. Top Layer Table 1. Recommended Inductors Component Series Supplier T AIYO YUDEN NR 4018 Murata LQH66S TDK SLF7045T Sumida CDRH5D16 GOTREND GTSD53 Table 2. Recommended Capacitors for C Component Supplier TDK TDK Panasonic Panasonic TAIYO YUDEN TAIYO ...
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... W-Type 16L QFN 3x3 Package Richtek Technology Corporation Taipei Office (Marketing) 8F, No. 137, Lane 235, Paochiao Road, Hsintien City Taipei County, Taiwan, R.O.C. Tel: (8862)89191466 Fax: (8862)89191465 Email: marketing@richtek.com RT8058 1 2 DETAIL A Pin #1 ID and Tie Bar Mark Options ...