FAN5701 Fairchild Semiconductor, FAN5701 Datasheet
FAN5701
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FAN5701 Summary of contents
Page 1
... The FAN5701 is capable of driving a primary display backlight requiring four to six LEDs. When more than four LEDs are needed for backlighting, the FAN5701’s two PWM dimming inputs can be connected together to provide the proper dimming control for all six LEDs. When a primary and sub-display is needed, the FAN5701 can be controlled such that each group can be dimmed independently ...
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... Block Diagram C1 C1– C2 C2– VIN 1 F GND EN PWMA PWMB © 2009 Fairchild Semiconductor Corporation FAN5701 • Rev. 1.0.2 CHARGE PUMP LOGIC AND CONTROL Figure 1. Typical Application 2 VOUT OUT D1A D2A D3A D4A D5B D6B www.fairchildsemi.com ...
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... Enable. When this pin is HIGH, normal operation is enabled. When LOW, the IC is reset A4 EN and all functions are disabled. B3 PWMA Group-A PWM Dimming Input A3 PWMB Group-B PWM Dimming Input © 2009 Fairchild Semiconductor Corporation FAN5701 • Rev. 1.0.2 Bumps Facing Up Description input power source www.fairchildsemi.com ...
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... Enable. When this pin is HIGH, normal operation is enabled. When LOW, the IC is reset and 4 EN all functions are disabled. 5 PWMA Group-A PWM Dimming Input 3 PWMB Group-B PWM Dimming Input © 2009 Fairchild Semiconductor Corporation FAN5701 • Rev. 1.0.2 Description input power source www.fairchildsemi.com ...
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... JESD51- JEDEC standard. Special attention must be paid not to exceed junction temperature given ambient temperate T J(max) © 2009 Fairchild Semiconductor Corporation FAN5701 • Rev. 1.0.2 Parameter Human Body Model, JESD22-A114 Charged Device Model, JESD22-C101 Charged Device Model, JESD22-C101 Parameter ...
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... For each Dxx pin, headroom voltage is the voltage across the internal current sink connected to that pin headroom voltage requirement is not met, LED current regulation is compromised. LED © 2009 Fairchild Semiconductor Corporation FAN5701 • Rev. 1.0.2 = 2.7V to 5.5V 20mA, and LED cathode terminals = 0.4V. Circuit and components are according to Conditions 1 ...
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... Figure 6. LED Current Variation vs. Temperature Figure 8. Switching Frequency vs. Temperature with LED Current of 20mA Typical Characteristics (Continued)V © 2009 Fairchild Semiconductor Corporation FAN5701 • Rev. 1.0.2 = 25° 20mA, and LED cathode terminals = 0.4V. A LED Figure 5. LED Current Match for all Six LED Channels Figure 7. Shutdown Current vs. Input Voltage Figure 9 ...
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... V =3.6V – 4.2V LEDx Figure 14. Line Transient from 1x to 1.5x Mode, V =3.2V – 4.1V LEDx © 2009 Fairchild Semiconductor Corporation FAN5701 • Rev. 1.0.2 Figure 11. Mode Transition from 1. Mode, Ramp Up) Figure 13. Line Transient Response in 1.5x Mode, =20mA Figure 15. Soft-Start with EN, V =20mA 8 V =3.6V (V Ramp Down) ...
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... V Over-Voltage Protection OUT If the output voltage goes above 6V, the FAN5701 shuts down until this condition has passed. The charge pump and LED driver outputs are turned off. Once this condition has passed, FAN5701 soft-starts into normal operation. ...
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... Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. © 2009 Fairchild Semiconductor Corporation FAN5701 • Rev. 1.0 ...
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... Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. © 2009 Fairchild Semiconductor Corporation FAN5701 • Rev. 1.0 3.00 0. 16X 0 ...
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... Fairchild Semiconductor Corporation FAN5701 • Rev. 1.0.2 12 www.fairchildsemi.com ...