NCP1523_07 ONSEMI [ON Semiconductor], NCP1523_07 Datasheet
NCP1523_07
Related parts for NCP1523_07
NCP1523_07 Summary of contents
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NCP1523 3 MHz, 600 mA, High−Efficiency, Adjustable Output Voltage Step−down Converter The NCP1523 step−down PWM DC−DC converter is optimized for portable applications powered from 1−cell Li−ion or 3 cell Alkaline/NiCd/NiMH batteries. The device is available in an adjustable output voltage ...
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OFF BATTERY 4.7 mF GND C1 GND A1 Logic Control & EN Enable Thermal Shutdown B2 Figure 2. Simplified Block Diagram NCP1523 OUT ...
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PIN FUNCTION DESCRIPTION Pin Pin Name Type A1 GND Power Ground A2 V Power Input Analog Output Digital Input C1 GND Power Ground C2 ADJ Analog Input D1 V Analog Input OUT D2 FB ...
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ELECTRICAL CHARACTERISTICS FOR NCP1523 (Typical values are referenced +25°C, Minimum and Maximum values are referenced −40°C to +85°C ambient temperature, A unless otherwise noted, operating conditions V Symbol V Input Voltage Range IN V Under Voltage Lockout ...
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ELECTRICAL CHARACTERISTICS FOR NCP1523B (Typical values are referenced +25°C, Minimum and Maximum values are referenced −40°C to +85°C ambient temperature, A unless otherwise noted, operating conditions V Symbol V Input Voltage Range IN V Under voltage Lockout ...
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TABLE OF GRAPHS TYPICAL CHARACTERISTICS h Efficiency V Output Voltage OUT F Frequency Variation OSC V Load Regulation OUT V Line Regulation OUT V Load Transient Response OUT V Line Transient Response OUT I Shutdown Current stb I Quiescent Current ...
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V , INPUT VOLTAGE (V) IN Figure 3. Quiescent Current vs. Supply Voltage 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 ...
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I = 400 mA OUT 3 600 mA OUT 3.0 2.8 2.6 2.4 2.8 3.3 3.8 4 INPUT VOLTAGE (V) IN Figure 9. Frequency vs. Input Voltage 5.0 3 0.9 V OUT ...
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NCP1523 CHARACTERISTICS Figure 15. Load Transient Response in PFM Operation ( 100 mA) Figure 17. Soft Start Time (V NCP1523 Figure 16. Load Transient Response Between PFM and PWM Operation (100 mA to 200 mA) = 3.6 V) ...
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V/Div V/Div V OUT 10 mV/Div I OUT 200 mA/Div Figure 18. PWM Mode of Operation ( OUT OUT 100 90 2.7 V 3.6 V ...
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I (mA) OUT Figure 24. Load Regulation vs. Input Voltage (V = 1.2 V, 255C) OUT 600 mA OUT ...
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V OUT 2 V/Div EN 200 mA/Div I OUT Figure 30. Soft Start Time ( OUT OUT 20 mV/Div V OUT mA/Div I OUT Figure 32. ...
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Overview The NCP1523 uses a constant frequency, voltage mode step−down architecture. Both the main (P−channel MOSFET) and synchronous (N−channel MOSFET) switches are internal. It delivers a constant voltage from either a single Li−Ion or three cell NiMH/NiCd battery to portable ...
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Output Voltage Selection The output voltage is programmed through an external resistor divider connected from ADJ to FB then to GND. For low power consumption and noise immunity, the resistor from FB to GND (R2) should be in the [100 ...
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Output Capacitor Selection Selecting the proper output capacitor is based on the desired output ripple voltage. Ceramic capacitors with low ESR values will have the lowest output ripple voltage and are strongly recommended. The output capacitor requires either an X7R ...
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D 0. È TERMINAL A1 LOCATOR È 0. TOP VIEW 0. SIDE VIEW NOTE 0. 0. BOTTOM VIEW ON ...