MIC2198 Datasheet, PDF (9/15 Pages) Micrel Semiconductor – 500kHz 4mm × 4mm Synchronous Buck Controller

MIC2198
Minimum Pulsewidth
The MIC2198 has a specified minimum pulsewidth. This
minimum pulsewidth places a lower limit on the minimum duty
cycle of the buck converter.
Figure 5 shows the minimum output voltage versus input
supply voltage for the MIC2198. For example, for V_IN = 15V,
V_OUT = 1.65V would be the lowest achievable voltage that
conforms to the minimum-on-time.
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
4.5
9.5 14.5 19.5 24.5 29.5
INPUT VOLTAGE (V)
Figure 5. Minimum Output Voltage
vs. Input Supply Voltage
Micrel
November 2004
9
MIC2198