NCP9001 ON Semiconductor, NCP9001 Datasheet
NCP9001
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NCP9001 Summary of contents
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... Quiescent Current, Adjustable Output Voltage Step−Down Converter The NCP9001 step−down PWM DC−DC converter is optimized for portable applications powered from one cell Li−ion or three cell Alkaline/NiCd/NiMH batteries. The device is available in an adjustable output voltage from 0 3 uses synchronous rectification to increase efficiency and reduce external part count. The device also has a built− ...
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Figure 2. Efficiency vs. Output Current Vbattery VIN PWM/PFM 1 CONTROL 4.7 mF GND 2 LOGIC CONTROL Enable EN & THERMAL 3 SHUTDOWN Figure 3. Simplified Block Diagram V = 3.3 V out ...
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PIN FUNCTION DESCRIPTION Pin No. Pin No. TSOP5 UDFN6 Symbol 1 3 VIN GND MAXIMUM RATINGS Rating Minimum Voltage All Pins Maximum Voltage All Pins (Note 2) Maximum ...
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ELECTRICAL CHARACTERISTICS +85°C ambient temperature, unless otherwise noted, operating conditions V Characteristic Input Voltage Range Undervoltage Lockout (V Falling) IN Quiescent Current PFM No Load Standby Current, EN Low Oscillator Frequency Peak Inductor Current Feedback Reference Voltage FB Pin Tolerance ...
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V , INPUT VOLTAGE (V) IN Figure 5. Quiescent Current vs. Supply Voltage 1 OUT 0.8 ...
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EN 2 V/Div V OUT 500 mV/Div 100 ms/Div Figure 11. Soft Start Time (V 1.8 1.7 1.6 1.5 1.4 1 300 mA OUT 1.2 −40 − TEMPERATURE (°C) Figure 13. Frequency vs. Temperature 2.0 ...
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I = 100 mA OUT 1.0 0 300 mA OUT 0.0 −0 600 mA OUT −1.0 −1 3 −2.0 − TEMPERATURE (°C) Figure 17. Output Voltage Accuracy (V ...
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... V or higher. PWM Operating Mode In this mode, the output voltage of the NCP9001 is regulated by modulating the on−time pulse width of the main switch fixed frequency of 1.5 MHz. The switching of the PMOS Q1 is controlled by a flip−flop ...
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... Soft−Start The NCP9001 uses soft−start (300 ms Typ) to limit the inrush current when the device is initially enabled. Soft−start is implemented by gradually increasing the reference voltage until it reaches the full reference voltage. ...
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... JMK212BY475MG TDK C2012X5ROJ475KB C1632X5ROJ475KT Output L−C Filter Design Considerations The NCP9001 is built in 1.5 MHz frequency and uses current 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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Table 3. List of Inductor FDK MIPW3226 Series TDK VLF3010AT Series Taiyo Yuden LQ CBL2012 Coil craft DO1605−T Series Output Capacitor Selection Selecting the proper output capacitor is based on the desired output ripple voltage. Ceramic capacitors with low ESR ...
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... IN THIS LOCATION. TRIMMED LEAD NOT TO EXTEND MORE THAN 0.2 FROM BODY. MILLIMETERS DIM MIN MAX A 3.00 BSC B 1.50 BSC C 0.90 1.10 D 0.25 0.50 G 0.95 BSC H 0.01 0.10 J 0.10 0.26 K 0.20 0.60 L 1.25 1. 2.50 3.00 2.4 0.094 mm inches ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCP9001/D ...