FAN5702 Fairchild Semiconductor, FAN5702 Datasheet
FAN5702
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FAN5702 Summary of contents
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... Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 Description The FAN5702 is a highly integrated and configurable charge- pump-based multi-LED driver. The device can drive up to six LEDs in parallel with a total output current of 180mA. Regulated internal current sinks deliver excellent current and brightness matching to all LEDs ...
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... Typical Application © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 Figure 1. Typical Application 2 www.fairchildsemi.com ...
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... PWM dimming input for Group A. To restore the Enable function, the General Purpose register bit 7 must be set LOW SDA I C interface serial data 2 A3 SCL I C interface serial clock © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0 Figure 2 ...
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... I C interface serial data 2 3 SCL I C interface serial clock © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 Bottom View Figure 3. UMLP-16, 0.5mm Pitch, 3mm x 3mm Description communications) are disabled. By setting General Purpose register bit the pin 4 input power source. ...
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... Junction-to-ambient thermal resistance is a function of application and board layout. This data is measured with four-layer 2s2p boards in accordance to JESD51-7 JEDEC standard. Special attention must be paid not to exceed junction temperature given ambient temperate T J(max) © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 Parameter Human Body Model per JESD22-A114 Charged Device Model per JESD22-C101 Parameter 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 © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 = -40°C to +85°C; and ENA, EN3, EN4, EN5, and EN6 = 1. Typical values are A Conditions 1.5x Mode, No LEDs ...
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... Figure 4. Efficiency with LED Current of 8mA and 20mA Figure 6. LED Current Variation vs. Temperature Figure 8. Switching Frequency over Temperature with LED Current at 20mA © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 Figure 5. LED Current Match for all 6 LED Channels at I =20mA. LED Figure 7 ...
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... IN LEDx Figure 13. Line Transient from 1x to 1.5x Mode, V =3.2V – 4.1V LEDx © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 Figure 10. Mode Transition from 1. Mode Using PWM Control (V Figure 12. Line Transient Response in 1.5x Mode, =20mA Figure 14. Soft-Start with SDA and SCL =20mA 8 Ramp Down Duty Cycle ...
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... Typical Characteristics Figure 15. Linear Dimming via I I =20mA, and t LEDx RAMP Figure 17. PWM and Linear (via I I =20mA, and EN=1kHz with 20% Duty Cycle LEDx © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0 Interface, V =3.6V, Figure 16. PWM Dimming =6.4ms 2 C) Dimming, V =3.6V ...
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... R t HIGH SCL t LOW t t HD;STA HD;DAT START Figure 18. I © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 Conditions Standard Mode Fast Mode Standard mode Fast Mode Standard Mode Fast Mode Standard Mode Fast Mode Standard Mode Fast Mode Standard Mode ...
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... Circuit Description The FAN5702 is a white LED driver system based on an adaptive 1.5x charge pump capable of supplying up to 180mA of total output current. The tightly matched current sinks ensure uniform brightness between the LEDs. Each LED has a common anode configuration with its peak drive current set ...
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... Bold identifies bits that cannot be overwritten. Bus Timing As shown in Figure 19, data is normally transferred when SCL is LOW. Data is clocked in to the FAN5702 on the rising edge of SCL. Typically, data transitions shortly at or after the falling edge of SCL to allow ample time for the data to set up before the next SCL rising edge ...
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... Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 During a read from the FAN5702 (Figure 23), the master issues a “Repeated Start” after sending the register address and before resending the slave address. The “Repeated Start” 1-to-0 transition on SDA while SCL is HIGH, as shown in Figure 21 ...
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... Brightness 6 00 – 3FH © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 General Purpose Register Setting this bit=1 changes the EN pin to function as a PWM dimming input for 0 group A LEDs. This bit must be set to zero for the chip to be disabled. 00=20mA (default), 01=30mA, 10=15mA, 11=8mA when I ...
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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/. © 2010 Fairchild Semiconductor Corporation FAN5702 • 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/. © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0 3.00 0. 16X 0 ...
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... Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 17 www.fairchildsemi.com ...