Fujitsu MB39A105 manual

Page 15

	MB39A105
• Soft-start and short-circuit protection circuit timing chart
	FB voltage
1.0 V
0.9 V	CSCP voltage
0.9 V
0.8 V
	0.7 V
	OSC
	amplifier
Output	0.3 V
Output
short	Output short
Soft-start time	Short-circuit detection time	t
tS	tCSCP

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Image 15

Contents Features DescriptionPackage PIN Assignment PIN Description Pin No Symbol DescriptionsBlock Diagram Recommended Operating Conditions Parameter Symbol Condition Rating Unit Min MaxParameter Symbol Condition Value Unit Min Typ Absolute Maximum RatingsElectrical Characteristics ParameterPin Conditions Value Unit Min Typ Max Error Typical CharacteristicsTriangularwave oscillation Power Dissipation vs. Ambient Temperature PWM comparator block PWM Comp Error amplifier block Error Amp1, Error Amp2Functions Triangular-wave oscillator block OSCShort-circuit protection detection output function PowerTimer-latch short-circuit protection circuit SCP Under voltage lockout protection circuit UvloSetting the Triangular Oscillation Frequency Setting the Output VoltageSetting the SOFT-START Times Timer-latch short-circuit protection circuit MB39A105 Equivalent Circuit Application Parts No Parts ListSelection of Components 2I OV O 2LV O Peak-to-peak value ESR Reference Data Part number Package Remarks Usage PrecautionOrdering Information Do not apply negative voltagesIndex Package DimensionFujitsu Limited