ncp1522b ON Semiconductor, ncp1522b Datasheet
ncp1522b
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ncp1522b Summary of contents
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... DC- DC Converter High-Efficiency, Low Ripple, Adjustable Output Voltage The NCP1522B step- down DC- DC converter is a monolithic integrated circuit optimized for portable applications powered from one cell Li- Ion or three cell Alkaline/NiCd/NiMH batteries. The part, available in adjustable output voltage versions ranging from 0 ...
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... Figure 3. Efficiency vs. Output Current V battery VIN PWM/PFM 1 CONTROL 4.7 mF GND 2 LOGIC CONTROL Enable EN & THERMAL 3 SHUTDOWN Figure 4. Simplified Block Diagram NCP1522B V = 3.3 V OUT 25°C A 200 300 400 500 I OUTPUT CURRENT (mA) OUT LIMIT FB 4 REFERENCE VOLTAGE http://onsemi ...
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... Human Body Model (HBM) per JEDEC standard: JESD22-A114. Machine Model (MM) per JEDEC standard: JESD22-A115. 4. Latchup current maximum rating per JEDEC standard: JESD78. 5. JEDEC Standard: J-STD-020A. NCP1522B 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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... N-Channel Leakage Current 6. The overall output voltage tolerance depends upon the accuracy of the external resistor (R1, R2). 7. For V = 0.9 V, maximum input voltage do not exceed 5.2 V. OUT NCP1522B (Typical values are referenced +25°C, Min and Max values are referenced -40°C to +85° 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 7. Shutdown Current vs. Supply Voltage NCP1522B 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 8. Quiescent Current PFM No Switching http://onsemi ...
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... IN A 100 25° 100 200 300 400 I , OUTPUT CURRENT (mA) OUT Figure 13. Efficiency vs. Output Current ( OUT NCP1522B 3.0 2.0 1 -1.0 -2.0 -3.0 80 100 120 0 Figure 10. Output Voltage Accuracy vs. Temperature 100 3.3 V OUT 400 ...
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... V , INPUT VOLTAGE (V) IN Figure 17. Line Regulation ( 300 mA) OUT OUT Figure 19. 3 3.6 V Line Transient (Risetime = OUT T = 255C) A NCP1522B V OUT I LX 100 mV/div Time 10 ms/div 1 0.8 0.6 0.4 I OUT 25°C 0.2 0 -0.2 -40 °C -0.4 -0.6 -0.8 -1 4.7 5.2 2 0.5 V/div V OUT 20 mV/div Figure 20. 3 3.0 V Line Transient ...
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... OUT 50 mA/div V 20 mV/div Figure 23 100 mA Load Transient ( OUT 20 mV/div 200 mA/div Figure 25. 200 mA to 600 mA Load Transient ( OUT A NCP1522B 3.0 2 -40 °C 1.0 0.0 -1.0 25°C -2.0 85°C -3.0 500 600 0 I OUT OUT Figure 24. 100 Load Transient ...
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... Lx Figure 27. PWM Switching Waveform ( PFM Operating Mode Under light load conditions, the NCP1522B 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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... Soft-Start The NCP1522B uses soft-start to limit the inrush current when the device is initially powered up or enabled. Soft-start is implemented by gradually increasing the reference voltage until it reaches the full reference voltage. During startup, a pulsed current source charges the internal soft-start capacitor to provide gradually increasing reference voltage ...
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... JMK212BY475MG C2012X5ROJ475KB TDK C1632X5ROJ475KT Output L-C Filter Design Considerations The NCP1522B operates at 3 MHz frequency and uses voltage mode architecture. The correct selection of the output filter ensures good stability and fast transient response. Due to the nature of the buck converter, the output L-C filter must be selected to work with internal compensation. ...
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... Switching Frequency SW • Output Capacitor OUT • ESR: Output Capacitor Serial Resistor NCP1522B Table 4. LIST OF OUTPUT CAPACITORS Murata ) ESR Taiyo Yuden (eq. 6) TDK Feed-Forward Capacitor Selection The feed-forward capacitor sets the feedback loop response and is critical to obtain good loop stability. ...
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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. NCP1522B PACKAGE DIMENSIONS TSOP-5 CASE 483-02 ISSUE G 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 (NCP1522B), 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. “ ...