FAN2103 Fairchild Semiconductor, FAN2103 Datasheet
FAN2103
Related parts for FAN2103
FAN2103 Summary of contents
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... FAN2103EMPX -40°C to 85°C © 2007 Fairchild Semiconductor Corporation FAN2103 • Rev. 1.0.7 Description The FAN2103 TinyBuck™ easy-to-use, cost- and space-efficient, 3A synchronous buck solution. It enables designers to solve high current requirements in a small area with minimal external components. External compensation, frequency, and current limit features allow for design optimization and flexibility ...
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... ILIM Def Level COMP Error Amplifier REF RAMP EN OSC GEN RAMP © 2007 Fairchild Semiconductor Corporation FAN2103 • Rev. 1.0.7 Figure 1. Typical Application Current Limit ILIM Comparator R Q PWM Comparator S Summing Amplifier Current Sense Figure 2. Block Diagram 2 BOOT Boot Diode ...
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... No Connect. This pin is not used. Ramp Amplitude. A resistor (R 25 RAMP and provides voltage feedforward functionality. © 2007 Fairchild Semiconductor Corporation FAN2103 • Rev. 1.0.7 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 25. Actual results are dependent on mounting method and surface related to the design. © 2007 Fairchild Semiconductor Corporation FAN2103 • Rev. 1.0.7 Conditions Conditions VCC to AGND VIN to PGND FAN2103M FAN2103EM ...
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... Under-Voltage Shutdown Fault Discharge Threshold Fault Discharge Hysteresis Soft-Start V to Regulation (T0.8) OUT Fault Enable/SSOK (T1.0) Note: 2. Specifications guaranteed by design and characterization; not production tested. © 2007 Fairchild Semiconductor Corporation FAN2103 • Rev. 1.0.7 Conditions SW = Open 0.7V 5V 600KHz SW Shutdown Rising V CC ...
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... Parameter Control Functions EN Threshold, Rising EN Hysteresis EN Pull-up Resistance EN Discharge Current FB OK Drive Resistance PGOOD Threshold (Compared REF PGOOD Output Low © 2007 Fairchild Semiconductor Corporation FAN2103 • Rev. 1.0.7 (Continued) Conditions Auto-restart Mode FB < V REF FB > V REF I < 2mA OUT 6 Min. ...
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... R Figure 6. Frequency vs. R 1.60 1.40 1.20 1.00 Q2 ~0.35 %/ 0.80 0.60 -50 0 Temperature ( Figure 8. R vs. Temperature, Normalized © 2007 Fairchild Semiconductor Corporation FAN2103 • Rev. 1.0.7 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 7. ...
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... Efficiency Over V OUT Regulation Characteristic 1.828 1.826 1.824 1.822 Vo8V (V) 1.820 Vo12V (V) Vo18V (V) 1.818 0.00 0.50 1.00 1.50 Load Current (A) Figure 13. 1.8 V Regulation vs. Load OUT © 2007 Fairchild Semiconductor Corporation FAN2103 • Rev. 1.0.7 VCC P2 15 10K PGOOD 2.49K COMP 20 56p ILIM ...
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... Typical operating characteristics using the circuit shown in Figure 10. V Figure 15. SW and V OUT Figure 17. Transient Response, 1.5-3A Load (Circuit Values Changed) Figure 19. Startup, 3A Load © 2007 Fairchild Semiconductor Corporation FAN2103 • Rev. 1.0.7 (Continued) Ripple, 3A Load Figure 16. Startup with 1V Pre-Bias =12V, V =5V, unless otherwise specified Figure 18 ...
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... IC. © 2007 Fairchild Semiconductor Corporation FAN2103 • Rev. 1.0.7 Bias Supply The FAN2103 requires a 5V supply rail to bias the IC and provide gate-drive energy and controller power. Connect a 1.0µf X5R or X7R decoupling capacitor between VCC and PGND. Whenever the EN pin is ...
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... KHz. Setting the Current Limit There are two levels of current-limit thresholds in FAN2103. The first level of protection is through an internal default limit set at the factory to limit output current beyond normal usage levels. The second level of protection is a flexible one to be set externally by the user ...
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... Auto-Restart After a fault discharged with 1µ 1.1V threshold before the 800K pull-up is restored. A new soft-start cycle begins when EN charges above 1.35V. Depending on the external circuit, the FAN2103 can be provisioned to remain latched-off or automatically restart after a fault. Table 1. Fault / Restart Provisioning ...
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... Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. © 2007 Fairchild Semiconductor Corporation FAN2103 • Rev. 1.0.7 2X RECOMMENDED LAND PATTERN ALL VALUES TYPICAL EXCEPT WHERE NOTED OPTIONAL LEAD DESIGN (LEADS & ...
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... Fairchild Semiconductor Corporation FAN2103 • Rev. 1.0.7 14 www.fairchildsemi.com ...