MC34726 Datasheet, PDF(9/19 Page) Freescale Semiconductor, Inc – 300 mA High Efficiency Low Quiescent Current Synchronous Buck Regulator With Z-mode

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MC34726 Datasheet, PDF (9/19 Pages) Freescale Semiconductor, Inc – 300 mA High Efficiency Low Quiescent Current Synchronous Buck Regulator With Z-mode

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ELECTRICAL CHARACTERISTICS

ELECTRICAL PERFORMANCE CURVES

Time: 500 ns/DIV

VOUT (1.0 V/DIV)

VSW (2.0 V/DIV)

Time: 200 Î¼s/DIV VOUT (AC Coupled, 200 mV/DIV)

VSW (2.0 V/DIV)

IL (200 mA/DIV)

Figure 10. CCM Switching Waveforms

VIN = 3.6 V, VOUT = 1.8 V and ILOAD = 150 mA

Time: 200 Î¼s/DIV VOUT (AC Coupled, 500 mV/DIV)

VSW (2.0 V/DIV)

ILOAD (100 mA/DIV)

ILOAD (200 mA/DIV)

Figure 12. Load Transient in Z-ModeTM

VIN = 3.6 V, ILOAD =10 to 300 mA

Time: 200 Î¼s/DIV

VOUT (AC Coupled, 50 mV/DIV)

VSW (2.0 V/DIV)

ILOAD (100 mA/DIV)

Figure 11. Load Transient in Sleepy Z-ModeTM

VIN = 3.6 V, ILOAD =1.0 to 150 mA

Figure 13. Load Transient in CCM

VIN = 3.6 V, ILOAD = 150 to 300 mA

Analog Integrated Circuit Device Data

Freescale Semiconductor

34726

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