FAN4860 Fairchild Semiconductor, FAN4860 Datasheet
FAN4860
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FAN4860 Summary of contents
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... Please refer to tape and reel specifications at http://www.fairchildsemi.com/packaging. © 2010 Fairchild Semiconductor Corporation FAN4860 • Rev. 1.1.0 Description The FAN4860 is a low-power boost regulator designed to provide a regulated 3. output from a single cell Lithium or Li-Ion battery. Output voltage options are fixed at either 3.3V or 5.0V with a guaranteed maximum load current of 200mA shut-down mode is less than 1µ ...
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... VOUT GND © 2010 Fairchild Semiconductor Corporation FAN4860 • Rev. 1.1.0 Figure 2. IC Block Diagram Figure 4. WLCSP (Bottom View) Description Input Voltage. Connect to Li-Ion battery input power source and input capacitor (C Switching Node. Connect to inductor. Enable. When this pin is HIGH, the circuit is enabled. This pin should not be left floating. ...
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... JEDEC standard JESD51. Special attention must be paid not to exceed junction temperature given ambient temperate T J(max) Symbol Parameter θ Junction-to-Ambient Thermal Resistance JA © 2010 Fairchild Semiconductor Corporation FAN4860 • Rev. 1.1.0 Parameter DC Transient: 10ns, 3MHz Human Body Model per JESD22-A114 Charged Device Model per JESD22-C101 Parameter 5.0 V OUT 3 ...
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... I ; also includes load transient response. V LOAD OUT Effective capacitance of C OUT 2. Guaranteed by design and characterization; not tested in production. 3. Elapsed time from rising EN until regulated V © 2010 Fairchild Semiconductor Corporation FAN4860 • Rev. 1.1.0 =V =2.3V to 4.5V (2 =25° Conditions Quiescent ...
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... Load Current (mA) Figure 8. Line and Load Regulation 4000 3200 2400 1600 800 100 150 Load Current (mA) Figure 10. Switching Frequency © 2010 Fairchild Semiconductor Corporation FAN4860 • Rev. 1.1 =25° 2.5 Vin 83 3.3 Vin 3.6 Vin 4.5 Vin 80 200 250 300 0 Figure 7 ...
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... Unless otherwise specified, circuit per Figure 1, 3.6V Figure 12. Maximum DC Load Current Figure 14. Output Ripple, 10mA PFM Load Figure 16. 0-50mA Load Transient, 100ns Step © 2010 Fairchild Semiconductor Corporation FAN4860 • Rev. 1.1 =25° Figure 13. Figure 15. Output Ripple, 200mA PWM Load Figure 17. ...
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... Unless otherwise specified, circuit per Figure 1, 3.6V Figure 18. Line Transient, 5mA Load, 10µs Step Figure 20. Startup, No Load Figure 22. Shutdown, 1KΩ Load © 2010 Fairchild Semiconductor Corporation FAN4860 • Rev. 1.1 =25° Figure 19. Line Transient, 200mA Load, 10µs Step Figure 21. Figure 23. ...
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... V Typical Characteristics OUT Unless otherwise specified, circuit per Figure 1, 3.6V Figure 24. Overload Protection © 2010 Fairchild Semiconductor Corporation FAN4860 • Rev. 1.1 =25° Figure 25. 8 Short-Circuit Response www.fairchildsemi.com ...
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... Load Current (mA) Figure 28. Line and Load Regulation 2.0 2.3 2.6 Input Voltage(V) Figure 30. Quiescent Current © 2010 Fairchild Semiconductor Corporation FAN4860 • Rev. 1.1 =25° 2.5 Vin 86 2.7 Vin 3.0 Vin 3.2 Vin 83 200 250 300 0 Figure 27 ...
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... V Typical Characteristics OUT Unless otherwise specified, circuit per Figure 1, 3.0V Figure 32. Output Ripple, 10mA PFM Load Figure 34. Startup, No Load © 2010 Fairchild Semiconductor Corporation FAN4860 • Rev. 1.1 =25° Figure 33. Output Ripple, 200mA PWM Load Figure 35. 10 Startup, 22Ω Load www.fairchildsemi.com ...
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... Functional Description Circuit Description FAN4860 is a synchronous boost regulator, typically operating at 3MHz in continuous conduction mode (CCM), which occurs at moderate to heavy load current and low V At light-load currents, the converter switches automatically to power-saving PFM mode. The regulator automatically and smoothly transitions between ...
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... The regulator shuts down when the thermal shutdown threshold is reached. Restart, with soft-start, occurs when the IC has cooled by about 30°C. Over-Current Protection (OCP) During boost-mode operation, the FAN4860 employs a cycle-by-cycle peak current limit to protect switching elements. Sustained current limit, for 32 consecutive fault CLK counts, initiates a fault condition. ...
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... EFF ceramic capacitors decrease as their bias voltage increases, as shown in Figure 40. Figure 40. C for 4.7μF, 0603, X5R, 6.3V (Murata EFF GRM188R60J475K) FAN4860 is guaranteed for stable operation with the minimum value outlined in Table 3. EFF EFF(MIN) © 2010 Fairchild Semiconductor Corporation FAN4860 • Rev. 1.1.0 Table 3 ...
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... The FB pin can tolerate up to 14V of positive excursion, while both the FB and VOUT pins can tolerate negative voltages. The FAN4860 includes a circuit to detect a missing or defective D1 by comparing OUT 0.7V, the IC shuts down. The IC remains shut down until V < ...
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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 FAN4860 • Rev. 1.1 ...
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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 FAN4860 • Rev. 1.1 2.0 0.10 C ...
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... Fairchild Semiconductor Corporation FAN4860 • Rev. 1.1.0 17 www.fairchildsemi.com ...