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| MIC4682 Datasheet, PDF (8/15 Pages) Micrel Semiconductor – PRECISION CURRENT LIMIT SO-8 SUPERSWITCHER BUCK REGULATOR | |||
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MIC4682
Micrel
Typical Bode Plots
The following bode plots show that the MIC4682 is stable using a 68µH inductor (L) and a 220µF output capacitor (COUT).
To assure stability, it is a good practice to maintain a phase margin of greater than 35°C.
No-Load Stability
Phase Margin = 98°
Full-Load Stability
Phase Margin = 56°
VIN = 7.5V
VOUT = 5V
IOUT = 0A
TA = 25°C
No-Load Stability
Phase Margin = 109°
VIN = 7.5V
VOUT = 5V
IOUT = 1A
TA = 25°C
Full-Load Stability
Phase Margin = 50°
VIN = 12V
VOUT = 5V
IOUT = 0A
TA = 25°C
No-Load Stability
Phase Margin = 122°
VIN = 12V
VOUT = 5V
IOUT = 1A
TA = 25°C
Full-Load Stability
Phase Margin = 45°
VIN = 34V
VOUT = 5V
IOUT = 0A
TA = 25°C
October 2003
VIN = 34V
VOUT = 5V
IOUT = 1A
TA = 25°C
8
M0334-102203
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