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NCP5010

ON Semiconductor
Part Number NCP5010
Manufacturer ON Semiconductor
Description Boost Converter
Published Apr 25, 2007
Detailed Description NCP5010 500 mW Boost Converter for White LEDs The NCP5010 is a fixed frequency PWM boost converter with integrated rec...
Datasheet PDF File NCP5010 PDF File

NCP5010
NCP5010

Overview
NCP5010 500 mW Boost Converter for White LEDs The NCP5010 is a fixed frequency PWM boost converter with integrated rectification optimized for constant current applications such as driving white LEDs.
This device features small size, minimal external components and high−efficiency for use in portable applications and is capable of providing up to 500 mW output power to 2−5 series connected white LEDs.
A single resistor sets the LED current and the CTRL pin can be pulse width modulated (PWM) to reduce the LED Current.
The device includes True−Cutoff circuitry to disconnect the load from the battery when the device is put into standby mode.
To protect the device, an output overvoltage protection, and short circuit protection have been incorporated.
The NCP5010 is housed in a low profile, space efficient 1.
7 x 1.
7 mm Flip−Chip package.
The device has been optimized for use with small inductors and ceramic capacitors.
Features http://onsemi.
com MARKING DIAGRAM A1 8−Pin Flip−Chip FC SUFFIX 1 CASE 499AJ DAXG AYWW DAX G A Y WW = Specific Device Code = Pb−Free Package = Assembly Location = Year = Work Week • 2.
7 to 5.
5 V Input Voltage Range • Efficiency: 84% for 5 LED (VF = 3.
5 V by LED) at 30 mA and 4.
2 V VIN • Low Noise 1 MHz PWM DC−DC Converter • Open LED Protection and Short Circuit Protection • Serial LEDs Architecture for Uniform Current Matching • 1 mA Shutdown Current Facility with True−Cutoff • Very Small 8−Pin Flip−Chip 1.
7 x 1.
7 mm Package • This is a Pb−Free Device PIN CONNECTIONS A1 A2 A3 AGND CTRL NC B1 B3 VIN FB C1 C2 C3 VOUT SW PGND Typical Applications Top View • White LED Backlighting for Small Color LCD Displays • Cellular Phones • Digital Cameras • MP3 Players • High Efficiency Step−up Converter ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 16 of this data sheet.
90 80 VOUT = 5 LED (18 V) EFFICIENCY (%) 70 VOUT = 3 LED (11 V) 60 50 40 30 20 10 VIN = 4.
2 V 0 1 10 100 IOU...


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