DC DC Switching Controllers

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Mfr Part #	Quantity Available	Price	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

LTC3891EFE#PBF IC REG CTRLR BUCK 20TSSOP Analog Devices Inc.	1,860 In Stock	1 : ¥89.26000 Tube	-	Tube	Active	Transistor Driver	Step-Down	Positive	Buck	1	1	4V ~ 60V	105kHz ~ 835kHz, 350kHz ~ 535kHz	99%	Yes	No	-	Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking	-40°C ~ 125°C (TJ)	Surface Mount	20-TSSOP (0.173", 4.40mm Width) Exposed Pad	20-TSSOP-EP
LTC3891EFE#TRPBF IC REG CTRLR BUCK 20TSSOP Analog Devices Inc.	1,066 In Stock	1 : ¥89.26000 Cut Tape (CT) 2,500 : ¥48.77835 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Transistor Driver	Step-Down	Positive	Buck	1	1	4V ~ 60V	105kHz ~ 835kHz, 350kHz ~ 535kHz	99%	Yes	No	-	Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking	-40°C ~ 125°C (TJ)	Surface Mount	20-TSSOP (0.173", 4.40mm Width) Exposed Pad	20-TSSOP-EP
LTC3891IFE#PBF IC REG CTRLR BUCK 20TSSOP Analog Devices Inc.	1,676 In Stock	1 : ¥101.93000 Tube	-	Tube	Active	Transistor Driver	Step-Down	Positive	Buck	1	1	4V ~ 60V	105kHz ~ 835kHz, 350kHz ~ 535kHz	99%	Yes	No	-	Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking	-40°C ~ 125°C (TJ)	Surface Mount	20-TSSOP (0.173", 4.40mm Width) Exposed Pad	20-TSSOP-EP
LTC3891HFE#PBF IC REG CTRLR BUCK 20TSSOP Analog Devices Inc.	0 In Stock Check Lead Time	1 : ¥96.06000 Tube	-	Tube	Active	Transistor Driver	Step-Down	Positive	Buck	1	1	4V ~ 60V	105kHz ~ 835kHz, 350kHz ~ 535kHz	99%	Yes	No	-	Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking	-40°C ~ 150°C (TJ)	Surface Mount	20-TSSOP (0.173", 4.40mm Width) Exposed Pad	20-TSSOP-EP

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DC DC Switching Controllers

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.