LM2745MTCX Datasheet, PDF (5/37 Pages) Texas Instruments – LM2745 / LM2748 Synchronous Buck Controller with Pre-Bias Startup, and Optional Clock

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LM2745, LM2748
SNOSAL2E – APRIL 2005 – REVISED APRIL 2013
Typical Performance Characteristics
Efficiency (V_OUT = 1.2V)
V_CC = 3.3V, f_SW = 1 MHz
Internal Reference Voltage
vs
Temperature
Figure 3.
Frequency
vs
Temperature
Figure 4.
Output Voltage
vs
Output Current
Figure 5.
Switch Waveforms
V_CC = 3.3V, V_IN = 5V, V_OUT = 1.2V
I_OUT = 3A, C_SS = 12 nF, f_SW = 1 MHz
Figure 6.
Start-Up (Full-Load)
V_CC = 3.3V, V_IN = 5V, V_OUT = 1.2V
I_OUT = 3A, C_SS = 12 nF, f_SW = 1 MHz
Figure 7.
Figure 8.
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