Fujitsu MB3788 manual HOW to SET Output Voltage

Page 12

MB3788

■HOW TO SET OUTPUT VOLTAGE

VREF

R R1

R R2

VOUT

	VOUT =	VREF		(R1	+ R2)
		2	⋅ R2

+

-

RNF

Note: Set the output voltage in the positive range (VOUT > 0).

12

Image 12

Contents Features DescriptionPackage MB3788 PIN AssignmentPIN Description Pin No Pin name DescriptionsBlock Diagram MB3788Functional Description Timer and latch-type short-circuit protection circuit Low input voltage malfunction fail-safe circuitParameter Symbol Conditions Ratings Unit Min Max Parameter Symbol Conditions Values Unit Min Typ MaxAbsolute Maximum Ratings Recommended Operating ConditionsElectical Characteristics Parameter Symbol Conditions Value Unit Min Typ MaxPWM Standard Characteristic Curves TA = +25C Supply voltage VCC 8 12 16180 HOW to SET Output Voltage HOW to SET Output Current OFFLatch-Type Short-Circuit Protection Circuit Processing Without Using SCP PIN Processing without using SCP PinBasic Voltage-Drop Type DC/DC Converter Circuit DC/DC Converter a V φ Characteristic Measurement Diagram Application Circuit SCP Inpwm GNDOrdering Information Part number Package RemarksPackage Dimension IndexFujitsu Limited