LM51031D HTC [HTC Korea TAEJIN Technology Co.], LM51031D Datasheet
LM51031D
Related parts for LM51031D
LM51031D Summary of contents
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... Typical Application (Fixed Output Voltage Versions) Figure 1. Block Diagram and Typical Application 2008 - Ver. 1.0 ORDERING INFORMATION Device LM51031D LM51031 − 1 − LM51031 SOP-8 PKG Marking Package SOP-8 ...
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Fast PFET Buck Controller MAXIMUM RATINGS (Absolute Maximum Ratings indicate limits beyond which damage to the device may occur) Rating Maximum Supply Voltage Driver Supply Voltage Driver Output Voltage C , CS, V (Logic Pin) OSC FB Peak Output Current ...
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Fast PFET Buck Controller ELECTRICAL CHARACTERISTICS (Specifications apply for 4.5V ≤ V Characteristic Oscillator Frequency Charge Current Discharge Current Maximum Duty Cycle Short Circuit Timer Charge Current Fast Discharge Current Slow Discharge Current Start Fault Inhibit Time Valid Fault Time ...
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Fast PFET Buck Controller THEORY OF OPERATION Control Scheme The LM51031 monitors and the output voltage to determine when to turn on the PFET below the internal reference voltage of 1.25V during theoscillator’s charge cycle, the PFET is ...
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Fast PFET Buck Controller the PFET off and V continue to rise, the CC C oscillator capacitor (C ) and Soft start/Fault OSC Timing capacitor(CS) charges via internal current sources. C gets charged by the current source OSC ...
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Fast PFET Buck Controller Buck Regulator Operation A block diagram of a typical buck regulator is shown in Figure assume that the output transistor is initially off, and the system is in discontinuous operation, the inductor current ...
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Fast PFET Buck Controller 2) Switching Frequency and On and Off Time Calculations Given that f = 200 kHz and Oscillator Capacitor Selection The switching frequency is set by COSC, whose value is given by: 4) Inductor ...
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Fast PFET Buck Controller 7) Divider Bypass Capacitor CRR Since the feedback resistors divide the output voltage by a factor of 4.0, i.e. 5.0 V/1. 4.0, it follows that the output ripple is also divided by four. This ...
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Fast PFET Buck Controller A P−Ch FET with a continuous drain current (ID) rating greater than the maximum output current is required. The Gate−to−Source voltage VGS and Source Breakdown Voltage should be chosen based on the input supply voltage. The ...