NCP5050GEVB ON Semiconductor, NCP5050GEVB Datasheet
NCP5050GEVB
Specifications of NCP5050GEVB
Related parts for NCP5050GEVB
NCP5050GEVB Summary of contents
Page 1
NCP5050 4.5 W Flash White LED Boost Driver The NCP5050 is a high powered fixed frequency PWM boost converter optimized for constant current applications such as driving high−powered white LEDs. This device has been designed with high−efficiency for use in ...
Page 2
Figure 2. Typical Efficiency 2 4.7 mF 0603 6.3 V OSC Thermal 1.7MHz Shut down PCA 5 R1 PWM CONTROLLER 2.8k CTRL 3 Band Gap ...
Page 3
PIN FUNCTION DESCRIPTION Pin Name Pin Type 1 PGND POWER Power Ground: This pin is the power ground and carries the high switching current. A high quality ground must be provided to avoid any noise spikes/uncontrolled operation. Cares must be ...
Page 4
MAXIMUM RATINGS (Note 1) Rating Power Supply Voltage (Note 2) Over Voltage Protection Human Body Model (HBM) ESD Rating (Note 3) HCS and FB Pins Machine Model (MM) ESD Rating (Note 3) HCS and FB Pins Digital Input Voltage Digital ...
Page 5
ELECTRICAL CHARACTERISTICS to 5.5 V (Unless otherwise noted). Typical values are referenced to T Characteristics Operating Power Supply Maximum Inductor Current (Notes 9 and 11) (see Figure 24) Refer Switch Current Limit section @ 25°C Power Switch ON Resistor T ...
Page 6
TYPICAL OPERATING CHARACTERISTICS 1000 800 600 3.3 V 400 in 200 Operating Area (V) out Figure 4. Maximum Output Current Available vs. V ...
Page 7
TYPICAL OPERATING CHARACTERISTICS Channel 1:V OUT DC Measurement, 5 V/Div Channel 2:V OUT AC Measurement, 500 mV/Div Figure 10. Typical V Ripple in OVP OUT Condition, No Load Channel 1:SW Pin DC Measurement, 5 V/Div Channel 4:LED Current DC Measurement, ...
Page 8
TYPICAL OPERATING CHARACTERISTICS 50.0 45.0 40.0 35.0 30.0 25.0 20.0 15.0 10.0 5.0 0 DUTY CYCLE (%) Figure 16. Dimming on CTRL: I Duty Cycle kHz ...
Page 9
UVLO COMP − UVLO + UVLO REF MAX DUTY CYCLE COMP − M DUTY REF + FB − − REF + RAMP COMP ONE SHOT OSC 1.7 MHz ENABLE Operation The NCP5050 DC−DC converter is based on a ...
Page 10
LED Current Selection Two different currents can be setup by external resistor. The first one is setup by Low Current Sense Resistor (R ...
Page 11
Switch Current Limit Setup by R PCA 1500 1000 Operating Inductor Peak Current 500 0 50 150 250 I (mA) out Figure 21. Inductor Peak Currents Vs LEDs, (10 350 mA) 3000 2500 ...
Page 12
... Some recommended Schottky diodes include but are not limited to: ON SEMICONDUCTOR: MBR130LSFT1G ON SEMICONDUCTOR: MBR120LSFT3G Timeout Protection To avoid a failure in LEDs caused by a timing violation in Flash Mode (CM high), a timeout function turn off the output after 1.2 second. Any rising edge of CTRL reset this function ...
Page 13
ORDERING INFORMATION1 Device NCP5050MTTXG †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D. Demo Board Available: • The NCP5050EVB/D evaluation board that configures the device ...
Page 14
... B 0.3008 NOTE 3 0.05 C *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. N. American Technical Support: 800−282−9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81− ...