FAN2106 Fairchild Semiconductor, FAN2106 Datasheet
FAN2106
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FAN2106 Summary of contents
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... FAN2106EMPX -40°C to 85°C © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.1 Description The FAN2106 TinyBuck™ highly efficient, small- footprint, constant-frequency, synchronous buck regulator. IN The FAN2106 contains both synchronous MOSFETs and a controller/driver with optimized interconnects in ...
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... Typical Application Diagram Block Diagram © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.1 Figure 1. Typical Application Figure 2. Block Diagram 2 www.fairchildsemi.com ...
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... No Connect. This pin is not used. Ramp Amplitude. A resistor (R 25 RAMP and provides voltage feedforward functionality. © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.1 BOOT ) from this pin to AGND can be used to program the current- ILIM ) from this pin to AGND sets the PWM switching T ...
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... Power Dissipation Note: 1. Typical thermal resistance when mounted on a four-layer, two-ounce PCB, as shown in Figure 26. Actual results are dependent on mounting method and surface related to the design. © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.1 Conditions Conditions VCC to AGND VIN to PGND FAN2106MPX FAN2106EMPX ...
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... Current LIM Over-Temperature Shutdown Over-Temperature Hysteresis Over-Voltage Threshold Under-Voltage Shutdown Fault Discharge Threshold Fault Discharge Hysteresis Soft-Start V to Regulation (T0.8) OUT Fault Enable/SSOK (T1.0) © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.1 Conditions SW = Open 0.7V 5V 600KHz SW Shutdown Rising V CC Hysteresis R = 50K ...
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... FB OK Drive Resistance PGOOD Threshold (Compared REF PGOOD Output Low Note: 2. Specifications guaranteed by design and characterization; not production tested. 3. See Figure 4 for Temperature Coefficient © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.1 (Continued) Conditions Auto-Restart Mode, V ...
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... R T Figure 6. Frequency vs. R 1.60 1.40 1.20 1.00 0.80 0.60 -50 0 Temperature ( Figure 8. R vs. Temperature, Normalized © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.1 1.20 1.10 1.00 0.90 0.80 50 100 150 - vs. Temperature, Figure 5. Reference Bias Current (I FB 1.02 1.01 1.00 0.99 0.98 -50 80 100 120 140 (K ) Figure ...
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... V =12V IN 80 300KHz Load (A) Figure 13. 1.8V Efficiency Over Frequency vs. OUT Load (Circuit Value Changes) © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.1 FAN2106 Figure 10. Application Circuit: 1.8V 1400 1200 1000 800 600 18V IN 400 200 vs. Load Figure 12 ...
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... Typical Performance Characteristics Typical operating characteristics using the circuit shown in Figure 10. V Figure 15. SW and V OUT Figure 17. Transient Response, 2-6A Load EN Figure 19. Startup, 3A Load © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.1 (Continued) V OUT SW Ripple, 6A Load Figure 16. Startup with 1V Pre-Bias OUT ...
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... If the parallel combination of R1 and R internal SS ramp is not released and the regulator does not start. Enable FAN2106 has an internal pull-up to the ENABLE (EN) pin so that the IC is enabled once V UVLO threshold. Connecting a small capacitor across EN and AGND delays the rate of voltage rise on the EN pin ...
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... Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.1 Application Information Bias Supply The FAN2106 requires a 5V supply rail to bias the IC and provide gate-drive energy. Connect a 1.0µf X5R or X7R decoupling capacitor between VCC and PGND. Since V supply current is frequency and voltage dependent. ...
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... The second level of protection is set externally at the ILIM pin by connecting a resistor (R between ILIM and AGND. Current-limit protection is enabled whenever the lower of the two thresholds is reached ( see Figure 24 ). FAN2106 uses its internal low- side MOSFET for current-sensing. The current-limit threshold voltage ( compared to a scaled version ...
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... IN Application note AN-8022 (TinyCalc™) calculate the compensation components. © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.1 Recommended PCB Layout value, the modulator Good PCB layout and careful attention to temperature rise is essential for reliable operation of the regulator. Four-layer PCB with two-ounce copper on the top and ...
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... Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.1 2X RECOMMENDED LAND PATTERN ALL VALUES TYPICAL EXCEPT WHERE NOTED OPTIONAL LEAD DESIGN (LEADS & ...
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... Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.1 15 www.fairchildsemi.com ...