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ZHCSI45 April 2018 LM3478Q-Q1

PRODUCTION DATA.

Unless otherwise specified, V_IN = 12V, T_J = 25°C.

Figure 1. I_Q vs Input Voltage (Shutdown)

Figure 3. I_Supply vs V_IN (Switching)

Figure 5. Frequency vs Temperature

Figure 7. Current Sense Threshold vs Input Voltage

Figure 9. Efficiency vs Load Current (3.3-V Input and 12-V Output)

Figure 11. Efficiency vs Load Current (9-V Input and 12-V Output)

Figure 13. Error Amplifier Gain

Figure 15. COMP Pin Source Current vs Temperature

Figure 17. Compensation Ramp vs Compensation Resistor

Figure 19. Duty Cycle vs Current Sense Voltage

Figure 2. I_Supply vs Input Voltage (Non-Switching)

Figure 4. Switching Frequency vs R_FA

Figure 6. Drive Voltage vs Input Voltage

Figure 8. COMP Pin Voltage vs Load Current

Figure 10. Efficiency vs Load Current (5-V Input and 12-V Output)

Figure 12. Efficiency vs Load Current (3.3-V Input and 5-V Output)

Figure 14. Error Amplifier Phase

Figure 16. Short Circuit Sense Voltage vs Input Voltage

Figure 18. Shutdown Threshold Hysteresis vs Temperature