ncv8925 ON Semiconductor, ncv8925 Datasheet
ncv8925
Related parts for ncv8925
ncv8925 Summary of contents
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... DC-DC Converter High-Efficiency, Low Ripple, Adjustable Output Voltage The NCV8925 DC-DC buck converter is available in a space saving low profile TSOP-5 and mUDFN6 package. The part can supply output voltages from 0 3 external resistor divider and is able to deliver output currents up to 600 mA. This switching regulator operates at 3 ...
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... LX Analog Output 1 5 VIN GND (Top View) Figure 4. Pin Connections - TSOP-5 NCV8925 Reference Voltage Q1 Q2 PWM/PFM Control 4.7 mF Figure 3. Simplified Block Diagram Type Analog / Power supply input for the PFET power stage, analog and digital blocks. The pin must be decoupled to ground ceramic capacitor. ...
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... Where Pd is the maximum power dissipated by the device (worst case of the application), Where and R is the junction-to-ambient thermal resistance. qJA 7. To prevent permanent thermal damages, this device include a thermal shutdown which engages at 180°C (typ). NCV8925 Symbol V min V max V max ...
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... P-Channel Leakage Current N-Channel Leakage Current 8. The overall output voltage tolerance depends upon the accuracy of the external resistor (R1, R2). 9. For V = 0.9 V, maximum input voltage do not exceed 5.2 V. OUT NCV8925 (Typical values are referenced +25°C, Min and Max values are referenced -40° 3 ...
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... V Load Regulation OUT V Load Transient OUT 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 2.5 3.0 3.5 4 INPUT VOLTAGE (V) IN Figure 6. Shutdown Current vs. Supply Voltage NCV8925 vs. Input Voltage vs. Input Voltage vs. Temperature vs. Output Current vs. Input Voltage vs. Time vs. Time vs. Input Voltage vs. Time vs. Output Current vs. Time 4.5 5.0 5.5 2.5 3.0 Figure 7. Quiescent Current PFM No Switching http://onsemi ...
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... IN A 100 25°C 70 85° 100 200 300 I , OUTPUT CURRENT (mA) OUT Figure 12. Efficiency vs. Output Current ( OUT NCV8925 3.0 2.0 1 -1.0 -2.0 -3.0 80 100 120 0 Figure 9. Output Voltage Accuracy vs. Temperature 100 3.3 V OUT 400 ...
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... OUT OUT 1.0 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1.0 2.7 3.2 3.7 4 INPUT VOLTAGE (V) IN Figure 16. Line Regulation ( 300 mA) OUT OUT Figure 18. 3 3.6 V Line Transient (Risetime = OUT T = 255C) A NCV8925 V OUT I LX 100 mV/div Time 10 ms/div 1 0.8 0.6 0.4 85°C I OUT 0.2 125°C 0 -0.2 25°C -0.4 -40°C -0.6 -0.8 -1 4.7 5.2 2 0.5 V/div V OUT 20 mV/div Figure 19 ...
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... IN OUT 50 mA/div V 20 mV/div Figure 22 100 mA Load Transient ( OUT 20 mV/div 200 mA/div Figure 24. 200 mA to 600 mA Load Transient ( OUT A NCV8925 3.0 2 125°C 1.0 -40°C 0 -1.0 25°C 85°C -2.0 -3.0 500 600 0 I OUT OUT Figure 23. 100 Load Transient ...
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... Lx Figure 26. PWM Switching Waveform ( PFM Operating Mode Under light load conditions, the NCV8925 enters in low current PFM consumption. The output regulation is implemented by pulse frequency modulation. If the output voltage drops below the threshold of PFM comparator, a new cycle will be initiated by the PFM comparator to turn on the switch Q1 ...
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... Inductor Resistance (DCR) INDUCTOR NCV8925 Undervoltage Lockout The input voltage V NCV8925 enables the DC/DC converter output to begin the start up sequence (see Soft-Start section). The UVLO threshold hysteresis is typically 100 mV. Shutdown Mode Forcing this pin to a voltage below 0.4 V will shut down the IC. In shutdown mode, the internal reference, oscillator and most of the control circuitries are turned off ...
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... The maximum RMS current occurs at 50% duty cycle with maximum output current, which is I For NCV8925, a low profile ceramic capacitor of 4.7 mF should be used for most of the cases. For effective bypass results, the input capacitor should be placed as close as possible to the V pin ...
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... Switching Frequency SW • Output Capacitor OUT • ESR: Output Capacitor Serial Resistor NCV8925 Table 4. LIST OF OUTPUT CAPACITORS Murata TDK Feed-Forward Capacitor Selection ) ESR The feed-forward capacitor sets the feedback loop (eq. 6) response and is critical to obtain good loop stability. Given that the compensation is internally fixed higher ceramic capacitor is needed ...
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... C SEATING 0.05 PLANE H T *For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. NCV8925 PACKAGE DIMENSIONS TSOP-5 CASE 483-02 ISSUE H NOTES: 1. DIMENSIONING AND TOLERANCING PER 2. CONTROLLING DIMENSION: MILLIMETERS MAXIMUM LEAD THICKNESS INCLUDES M 4 ...
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... K 6X BOTTOM VIEW The products described herein (NCV8925), may be covered by one or more of the following U.S. patent(s); ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “ ...