NCP5005 ON Semiconductor, NCP5005 Datasheet - Page 22
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NCP5005
Manufacturer Part Number
NCP5005
Description
Compact Backlight LED Boost Driver
Manufacturer
ON Semiconductor
Datasheet
1.NCP5005.pdf
(23 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
NCP5005SNT1G
Manufacturer:
ON
Quantity:
3 000
Company:
Part Number:
NCP5005SNT1G
Manufacturer:
ON Semiconductor
Quantity:
20 000
Part Number:
NCP5005SNT1G
Manufacturer:
ON/安森美
Quantity:
20 000
FIGURES INDEX
Figure 1:
Figure 2:
Figure 3:
Figure 4:
Figure 5:
Figure 6:
Figure 7:
Figure 8:
Figure 9:
Figure 10: Overall Efficiency vs. Power Supply @ I
Figure 11: Overall Efficiency vs. Power Supply @ I
Figure 12: Overall Efficiency vs. Power Supply @ I
Figure 13: Overall Efficiency vs. Power Supply @ I
Figure 14: Overall Efficiency vs. Power Supply @ I
Figure 15: Feedback Voltage Stability
Figure 16: Feedback Voltage Variation
Figure 17: Standby Current
Figure 18: Typical Operating Frequency
Figure 19: Overvoltage Protection
Figure 20: Typical Power Up Response
Figure 21: Typical Start−Up Inductor Current and Output Voltage
Figure 22: Typical Inductor Current
Figure 23: Typical Output Voltage Ripple
Figure 24: Typical Output Peak Voltage
Figure 25: Efficiency as a Function of V
Figure 26: Noise Returned to the Battery
Figure 27: Relative EMI Over 100 kHz−30 MHz Bandwidth
Figure 28: Basic DC Current Mode Operation with Analog Feedback
Figure 29: Basic DC Current Mode Operation with PWM Control
Figure 30: Operation with Analog PWM, f = 10 kHz, DC = 25%
Figure 31: Typical Semi−Pulsed Mode of Operation
Figure 32: Operation @ PWM = 10 kHz, DC = 10%
Figure 33: Operation @ PWM = 10 kHz, DC = 25%
Figure 34: Magnified View of Operation @ PWM = 10 kHz, DC = 25%
Figure 35: Output Current as a Function of the Operating Conditions
Figure 36: Examples of Possible LED Arrangements
Figure 37: NCP5005 Demo Board Schematic Diagram
Figure 38: NCP5005 Demo Board Top Silkscreen
NOTE CAPTIONS INDEX
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
ABBREVIATIONS
EN
FB
POR
Typical Application
Block Diagram
Basic DC/DC Converter Structure
Basic DC/DC Operation
Maximum Output Power as a Function of the Battery Supply Voltage
Typical Inductor Peak Current as a Function of V
Maximum Output Current as a Function of V
Output Current Feedback
Basic Schematic Diagram
This device series contains ESD protection and exceeds the following tests
The maximum package power dissipation limit must not be exceeded
Latch−up current maximum rating: "100 mA per JEDEC standard: JESD78
Moisture Sensivity Level (MSL): 1 per IPC/JEDEC standard: J−STD−020A
The overall tolerance depends upon the accuracy of the external resistor
Enable
Feed Back
Power On Reset: Internal pulse to reset the chip when the power supply is applied
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bat
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and Inductor ESR
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http://onsemi.com
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out
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NCP5005
= 4.0 mA, L = 22 mH
= 10 mA, L = 22 mH
= 15 mA, L = 22 mH
= 20 mA, L = 22 mH
= 40 mA, L = 22 mH
bat
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22
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Voltage
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