DC DC Switching Controllers

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Mfr Part #	Quantity Available	Price	Tariff Status	Series	Package	Product Status	Output Type	Function	Output Configuration	Topology	Number of Outputs	Output Phases	Voltage - Supply (Vcc/Vdd)	Frequency - Switching	Duty Cycle (Max)	Synchronous Rectifier	Clock Sync	Serial Interfaces	Control Features	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package
L5991AD13TR IC REG CTRLR FLYBACK 16SOIC STMicroelectronics	2,278 In Stock	1 : $2.33000 Cut Tape (CT) 2,500 : $1.20773 Tape & Reel (TR)	Tariff may apply if shipping to the United States	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Transistor Driver	Step-Up/Step-Down	Positive, Isolation Capable	Flyback	1	1	7.6V ~ 20V	Up to 1MHz	93%	Yes	No	-	Current Limit, Frequency Control, Soft Start	-40°C ~ 150°C (TJ)	Surface Mount	16-SOIC (0.154", 3.90mm Width)	16-SO
L5991AD IC REG CTRLR FLYBACK 16SO STMicroelectronics	350 In Stock	1 : $2.33000 Tube	-	-	Tube	Active	Transistor Driver	Step-Up/Step-Down	Positive, Isolation Capable	Flyback	1	1	7.6V ~ 20V	Up to 1MHz	93%	Yes	No	-	Current Limit, Frequency Control, Soft Start	-40°C ~ 150°C (TJ)	Surface Mount	16-SOIC (0.154", 3.90mm Width)	16-SO
E-L5991AD IC REG CTRLR FLYBACK 16SOIC STMicroelectronics	78 In Stock	1 : $1.96000 Tube	-	-	Tube	Obsolete	Transistor Driver	Step-Up/Step-Down	Positive, Isolation Capable	Flyback	1	1	7.6V ~ 20V	Up to 1MHz	93%	Yes	No	-	Current Limit, Frequency Control, Soft Start	-40°C ~ 150°C (TJ)	Surface Mount	16-SOIC (0.154", 3.90mm Width)	16-SO

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PMIC (Power Management Integrated Circuit) DC to DC switching controllers are voltage regulation ICs used in high efficiency circuits configured to generate output supply voltages above (boost or step-up) or below (buck or step-down) the input supply. Other topologies may include; buck-boost, flyback, forward, cuk, SEPIC, full bridge, half bridge, and push-pull. They differ from linear regulators that require minimum voltages and "burn off" excess voltage.