NCP5006 ON Semiconductor, NCP5006 Datasheet
NCP5006
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NCP5006 Summary of contents
Page 1
... NCP5006 Compact Backlight LED Boost Driver The NCP5006 is a high efficiency boost converter operating in current loop, based on a PFM mode, to drive White LED. The current mode regulation allows a uniform brightness of the LEDs. The chip has been optimized for small ceramic capacitors, capable to supply ...
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... FB NCP5006 R1 D6 GND 15 W LWT67C Figure 1. Typical Application Thermal Shutdown 4 EN 100 k GND − 300 k +200 mV Band Gap Figure 2. Block Diagram http://onsemi.com NCP5006 V bat bat 4 out MBR0530 LWT67C LWT67C LWT67C LWT67C Current Sense ...
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... Care must be observed to avoid EMI through the PCB copper tracks connected to this pin. This pin is the system ground for the NCP5006 and carries both the power and the analog signals. High quality ground must be provided to avoid spikes and/or uncontrolled operation. Care must be observed to avoid high− ...
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... ESR < 1 3.60 V bat Stand By Current mA out Stand By Current mA out = 3 mH, 3xLED, Inductor Discharging Time @ V bat out Thermal Shutdown Protection Thermal Shutdown Protection Hysteresis NCP5006 Symbol V bat V out EN V ESD qJA ...
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... Internal Switch ON Resistor @ Tamb = +25°C 5. The overall tolerance depends upon the accuracy of the external resistor. ESD PROTECTION The NCP5006 includes silicon devices to protect the pins against the ESD spikes voltages. To cope with the different ESD voltages developed in the applications, the built−in structures have been designed to handle " ...
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... Rearranging Equation 5 yields: (eq. 2) Let bat (eq. 3) Finally, the operating frequency is: The output power supplied by the NCP5006 is limited to (eq. 4) one watt: Figure 5 shows the maximum power that can be delivered by the chip as a function of the output voltage. http://onsemi.com 6 ...
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... V (V) bat Figure 5. Maximum Output Power as a Function of the Battery Supply Voltage 120 100 2.5 Figure 7. Maximum Output Current as a Function of V NCP5006 400 350 4 LED 300 250 200 = 2.0 W sense 150 Test conditions mH, R Figure 6. Typical Inductor Peak Current as a ...
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... The typical application schematic diagram is provided in Figure (eq bat bat GND GND out 3 FB NCP5006 LWT67C LWT67C LWT67C LWT67C LWT67C Figure 9. Basic Schematic Diagram http://onsemi.com GND C1 4.7 mF GND ...
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... Output Load Drive In order to optimize the built−in Boost capabilities, one shall operate the NCP5006 in the continuous output current mode. Such a mode is achieved by using and external reservoir capacitor (see Table 1) across the LED. At this point, the peak current flowing into the LED diodes shall be within the maximum ratings specified for these devices ...
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... Figure 16. Feedback Voltage Variation Frequency = f mA−L bat out 2.5 2 LED 2.0 1.5 3 LED 4 LED 1.0 5 LED 0.5 0 2.5 3.0 3.5 4.0 4.5 V (V) bat Figure 18. Typical Operating Frequency NCP5006 = 22 mH Feedback Variation vs. Temperature out 205 204 203 202 201 200 199 198 197 196 195 −40 −20 5.00 5.50 = 1.0 mF, out Figure 15. Feedback Voltage Stability 1.4 1.2 1.0 ...
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... NCP5006 TYPICAL OPERATING WAVEFORMS = 22 mH, 5 LED, I Conditions 3 bat out Figure 20. Typical Power Up Response V out Inductor Current = 22 mH, 5 LED, I Conditions 3 bat out Figure 21. Typical Start−Up Inductor Current and Output Voltage http://onsemi.com 11 V out Inductor Current = 15 mA out = 15 mA ...
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... NCP5006 TYPICAL OPERATING WAVEFORMS = 22 mH, 5 LED, I Conditions 3 bat out Figure 22. Typical Inductor Current = 22 mH, 5 LED, I Conditions 3 bat out Figure 23. Typical Output Voltage Ripple http://onsemi.com 12 Inductor Current = 15 mA out V Ripple out 50 mV/div Inductor Current = 15 mA out ...
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... TYPICAL OPERATING WAVEFORMS Test Conditions mH mA, V out Figure 24. Typical Output Peak Voltage 92.00 90.00 ESR = 0.3 W 88.00 86.00 84.00 ESR = 1.3 W 82.00 80.00 78.00 3 3.5 4 4.5 V (V) bat NCP5006: Efficiency = f(ESR LED, ILed = 20 mA Figure 25. Efficiency as a Function of V http://onsemi.com 13 Output Voltage Inductor Current = 3.6 V, Ambient Temperature bat 5 5.5 and Inductor ESR bat ...
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... Figure 26. Noise Returned to the Battery Test Conditions 3 bat Figure 27. Relative EMI Over 100 kHz − 30 MHz Bandwidth NCP5006 10 100 FREQUENCY (MHz mA, string of 3 LED (OSRAM LWT67C) out http://onsemi.com 14 1000 ...
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... GND 1 V out 3 FB MBR0530 NCP5006 LWT67C LWT67C LWT67C LWT67C LWT67C start and stop the converter, yielding high transients . These transients might generate spikes difficult to filter out in the rest of the application, a situation not recommended. The output current depends upon the duty cycle of the signal presented to the node Pin 3: this is very similar to the digital control discussed in Figure 31 ...
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... bat 2 GND GND V out NCP5006 C3 R4 100 nF 5 GND 10 W LWT67C LWT67C LWT67C LWT67C LWT67C Sense Resistor value, preferably well below 1.0 MW. Consequently, let R2 = 150 and the other hand, the feedback delay to control the luminosity of the LED shall be acceptable by the user less being a good compromise ...
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... V bat bat GND GND 1 V out 3 FB NCP5006 LWT67C LWT67C LWT67C LWT67C LWT67C been carried out at room temperature with mH, five LEDs in series, RFB = 22 W. http://onsemi.com 17 C1 4.7 mF GND D1 MBR0530 C2 1 GND bat ...
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... NCP5006 Figure 33. Operation @ PWM = 10 kHz 25% Figure 34. Magnified View of Operation @ PWM = 10 kHz 25% http://onsemi.com 18 PWM V out VFB PWR CLK PWM V out PWR CLK ...
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... Figure 35. Output Current as a Function of the Operating Condition Table 1. Recommended Passive Parts Part Manufacturer Ceramic Capacitor 1.0 mF/16 V Ceramic Capacitor 1.0 mF/25 V Ceramic Capacitor 4.7 mF/6.3 V Inductor 22 mH Inductor 22 mH Inductor 22 mH Inductor 22 mH NCP5006 NCP5006 I = f(PWM kHz out Digital EN Analog PWM 100 DC (%) Description MURATA GRM42 − ...
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... LED Sense R1 3.9 W Resistor GND Test conditions 3.6 V bat = out = 1 out Figure 36. Examples of Possible LED Arrangements NCP5006 under realistic battery supply, powering ten LED can be achieved by a series/parallel combination as depicted in Figure 36 Load D5 D1 LED LED D6 LED D2 LED D7 LED ...
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... V EN bat NCP5006 C1 GND C6 100 nF C5 100 nF C4 4.7 mF GND bat ENABLE Figure 37. NCP5006 Demo Board Schematic Diagram NCP5006 MMBF0201NLT1 D10 D11 Q2 LWT67C LWT67C D7 D8 D12 MMBF0201NLT1 LWT67C LWT67C LWT67C NLAS4599 GND R4 Adjust Flash Pulse Width ...
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... NCP5006 Figure 38. NCP5006 Demo Board PCB: Top Layer Figure 39. NCP5006 Demo Board PCB: Bottom Layer Figure 40. NCP5006 Demo Board Top Silkscreen http://onsemi.com 22 ...
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... Figure 35: Output Current as a Function of the Operating Conditions Figure 36: Examples of Possible LED Arrangements Figure 37: NCP5006 Demo Board Schematic Diagram Figure 38: NCP5006 Demo Board PCB: Top Layer Figure 39: NCP5006 Demo Board PCB: Bottom Layer Figure 40: NCP5006 Demo Board Top Silkscreen NOTE CAPTIONS INDEX ...
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... D 0.25 0.50 0.0098 0.0197 G 0.85 1.05 0.0335 0.0413 H 0.013 0.100 0.0005 0.0040 J 0.10 0.26 0.0040 0.0102 K 0.20 0.60 0.0079 0.0236 L 1.25 1.55 0.0493 0.0610 2.50 3.00 0.0985 0.1181 mm inches ON Semiconductor Website: http://onsemi.com Order Literature: http://www.onsemi.com/litorder For additional information, please contact your local Sales Representative. NCP5006/D ...