NCP1443FR4 ON Semiconductor, NCP1443FR4 Datasheet
NCP1443FR4
Specifications of NCP1443FR4
Related parts for NCP1443FR4
NCP1443FR4 Summary of contents
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... Distributed Power • Portable Computers • Battery Powered Systems *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. © Semiconductor Components Industries, LLC, 2006 July, 2006 − Rev Feedback Voltage Polarity ...
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220 pF 0.01 mF 5.1 k GND MAXIMUM RATINGS Thermal Resistance Junction−to−Air, TO220−7 Version In Air (Socketed) Thermal Resistance Junction−to−Air, TO220−7 Version Thermal Resistance Junction−to−Air, PowerFLEX on 2.1 sq. in. 1 oz. ...
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ELECTRICAL CHARACTERISTICS unless otherwise stated.) (See Note 2) Characteristic Positive and Negative Error Amplifiers FB Reference Voltage (NCP1442/4 only) NFB Reference Voltage (NCP1443/5 only) FB Input Current (NCP1442/4 only) NFB Input Current (NCP1443/5 only) FB Reference Voltage Line Regulation (NCP1442/4 ...
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ELECTRICAL CHARACTERISTICS NCP1442/3/4/5 specifications unless otherwise stated.) (See Note 2) Characteristic Power Switch Switch Saturation Voltage Switch Current Limit Minimum Pulse Width Switch Transconductance DIV CC SW Switch Leakage General Operating Current Shutdown Mode Current Minimum Operation Input ...
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V CC Shutdown 2.0 V Regulator Delay Timer Sync SS 200 k Negative 2.0 V Error Amp 250 k NFB + NCP1443/5 − only −0.65 V Detector 0.4 V Detector FB − NCP1442/4 + only 1.276 V Thermal Shutdown S ...
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2 AMBIENT TEMPERATURE (°C) A Figure 3. Supply Current versus Temperature 800 700 600 T = ...
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T = 85° 25° −0.665 −0.67 −0.675 −0.68 −0.685 V , NEGATIVE FEEDBACK VOLTAGE (V) NFB Figure 9. Switching Frequency versus Negative Feedback Voltage −2.46 −2.47 −2. 2.7 ...
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T , AMBIENT TEMPERATURE (°C) A Figure 15. V Threshold Voltage versus C Temperature 180 160 140 120 100 80 V ...
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T , AMBIENT TEMPERATURE (°C) A Figure 21. Error Amplifier Transconductance versus Temperature 100 0 −100 −200 −300 −400 −500 −0.25 −0.2 −0.15 −0.1 −0.05 0 ...
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THEORY OF OPERATION Current Mode Control Oscillator − Power Switch PWM Comparator In Out Driver X5 SUMMER 15 mW Slope Compensation Figure 26. Current Mode Control Scheme The NCP144X family incorporates a current mode ...
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Switch Driver and Power Switch The switch driver receives a control signal from the logic section to drive the output power switch. The switch is grounded through emitter resistors (15 mW total) to the GND pin. The peak switching current ...
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The low frequency pole determined by the error P1, amplifier output resistance and C1 as 2pC1R O The first zero generated by C1 and R1 is 2pC1R1 The phase lead ...
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Magnetic Component Selection When choosing a magnetic component, one must consider factors such as peak current, core and ferrite material, output voltage ripple, EMI, temperature range, physical size and cost. In boost circuits, the average inductor current is the product ...
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I . Summing up, the output voltage peak−peak IN ripple can be calculated by OUT OUT(RIPPLE OUT) (f) I OUT OUT )(f) The ...
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The improved circuit does not require a regulated voltage to operate properly. Unfortunately, a price must be paid for this convenience in the overall efficiency of the circuit. The designer should note that the input and output grounds are no ...
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Figure 39. Soft−Start Resistor R1 and capacitors C1 and C2 form the compensation network. At turn on, the voltage at the V starts to come up, charging capacitor C3 ...
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... junction−to−ambient thermal resistance (°C/W). JA For ON Semiconductor components, the value for q be found on page 19 of the datasheet, under “Package Thermal Data.” Note that this value is different for every package style and every manufacturer. For the NCP144X, q varies between 10− ...
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... ORDERING INFORMATION Operating Temperature Range Device NCP1442FR4 NCP1442FR4G NCP1442T NCP1443FR4 NCP1443FR4G 0°C < T NCP1443T NCP1444FR4 NCP1444T NCP1445FR4 NCP1445T †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. Package 7 Lead PowerFLEX Short− ...
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0.076 (0.003) S −T− K SEATING PLANE THERMAL DIE PAD PACKAGE THERMAL DATA R qJC R qJA *Depending on thermal properties of substrate. R PACKAGE ...
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... Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303− ...