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ISL9120 Low Power Buck-Boost Regulator

Renesas Electronics ISL9120 Low Power Buck-Boost Regulator is a highly integrated DC-DC switching regulator that accepts input voltage above or below the regulated output voltage. The ISL9120 automatically transitions between buck and boost modes without significant output disturbance. The ISL9120 also has automatic bypass functionality. When the input voltage is generally within 1% to 2% of the output voltage, there will be a direct bypass connection between the V_IN and V_OUT pins. In addition to the automatic bypass functionality, the ISL9120 has forced bypass functionality using the BYP pin.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS	ECAD Model	Mounting Style	Package / Case	Topology	Output Voltage	Output Current	Number of Outputs	Quiescent Current	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging
	Switching Voltage Regulators High Efficiency Buck -Boost Regulator, A ISL9120IIAZ-T Renesas / Intersil 1: $1.74 1,587In Stock 6,000Expected 4/30/2027	Mfr. Part # ISL9120IIAZ-T Mouser Part # 968-ISL9120IIAZ-T	Renesas / Intersil	Switching Voltage Regulators High Efficiency Buck -Boost Regulator, A Learn More about Renesas / Intersil renesas isl9120 buck boost regulator	Datasheet	1,587In Stock 6,000Expected 4/30/2027	Cut Tape $1.74 $1.28 $1.16 $1.03 View Reel $0.903 $0.975 $0.938 $0.933 $0.903 MouseReel Available	Min.: 1 Mult.: 1 : 3,000			SMD/SMT	WLCSP-9	Buck-Boost	1 V to 5.2 V	800 mA	1 Output	41 uA	- 40 C	+ 85 C	ISL9120	Reel, Cut Tape, MouseReel
	Switching Voltage Regulators Hi-Eff Buck/Boost Re j, 3x3 WLCSP ISL9120IIAZ-T7A Renesas / Intersil 1: $2.13 591In Stock	Mfr. Part # ISL9120IIAZ-T7A Mouser Part # 968-ISL9120IIAZ-T7A	Renesas / Intersil	Switching Voltage Regulators Hi-Eff Buck/Boost Re j, 3x3 WLCSP Learn More about Renesas / Intersil renesas isl9120 buck boost regulator	Datasheet	591In Stock	Cut Tape $2.13 $1.54 $1.39 $1.24 Reel $1.15 View $1.09 $1.06 $1.02 $1.01 MouseReel Available	Min.: 1 Mult.: 1 : 250			SMD/SMT	WLCSP-9	Buck-Boost	1 V to 5.2 V	800 mA	1 Output	41 uA	- 40 C	+ 85 C	ISL9120	Reel, Cut Tape, MouseReel
	Switching Voltage Regulators Hi-Eff Buck/Boost Re 3V, 3x3 WLCSP ISL9120IINZ-T7A Renesas / Intersil 1: $2.19 13In Stock 250Expected 3/15/2027	Mfr. Part # ISL9120IINZ-T7A Mouser Part # 968-ISL9120IINZ-T7A	Renesas / Intersil	Switching Voltage Regulators Hi-Eff Buck/Boost Re 3V, 3x3 WLCSP Learn More about Renesas / Intersil renesas isl9120 buck boost regulator	Datasheet	13In Stock 250Expected 3/15/2027	Cut Tape $2.19 $1.55 $1.40 $1.24 Reel $1.16	Min.: 1 Mult.: 1 : 250			SMD/SMT	WLCSP-9	Buck-Boost	1 V to 5.2 V	800 mA	1 Output	41 uA	- 40 C	+ 85 C	ISL9120	Reel, Cut Tape
	Switching Voltage Regulators High Efficiency Buck-Boost Regulator, Adj, 3x3 TQFN ISL9120IRTAZ-T Renesas / Intersil 1: $2.71 5,941Expected 1/27/2027	Mfr. Part # ISL9120IRTAZ-T Mouser Part # 968-ISL9120IRTAZ-T	Renesas / Intersil	Switching Voltage Regulators High Efficiency Buck-Boost Regulator, Adj, 3x3 TQFN Learn More about Renesas / Intersil renesas isl9120 buck boost regulator	Datasheet	5,941Expected 1/27/2027	Cut Tape $2.71 $1.94 $1.75 $1.55 View Reel $1.30 $1.46 $1.40 $1.36 $1.30 MouseReel Available	Min.: 1 Mult.: 1 : 3,000			SMD/SMT	TQFN-EP-12	Boost, Buck	1 V to 5.2 V	800 mA	1 Output	41 uA	- 40 C	+ 85 C	ISL9120	Reel, Cut Tape, MouseReel
	Switching Voltage Regulators Buck-Boost Reg ISL9120IRTAZ-T7A Renesas / Intersil 1: $2.97 3,250On Order	Mfr. Part # ISL9120IRTAZ-T7A Mouser Part # 968-ISL9120IRTAZ-T7A	Renesas / Intersil	Switching Voltage Regulators Buck-Boost Reg Learn More about Renesas / Intersil renesas isl9120 buck boost regulator	Datasheet	3,250On Order On Order Ship Dates Mfr. #: ISL9120IRTAZ-T7A Stock: 0 On Order: 500 Expected 10/19/2026 750 Expected 2/2/2027 2,000 Expected 3/8/2027 Factory Lead-Time: 30 Weeks	Cut Tape $2.97 $2.33 $2.11 $1.88 Reel $1.67 MouseReel Available	Min.: 1 Mult.: 1 : 250			SMD/SMT	TQFN-EP-12	Boost, Buck	1 V to 5.2 V	800 mA	1 Output	41 uA	- 40 C	+ 85 C	ISL9120	Reel, Cut Tape, MouseReel
	Switching Voltage Regulators Hi-Eff Buck/Boost Re 3V, 3x3 TQFN ISL9120IRTNZ Renesas / Intersil 1: $2.71 7,474On Order	Mfr. Part # ISL9120IRTNZ Mouser Part # 968-ISL9120IRTNZ	Renesas / Intersil	Switching Voltage Regulators Hi-Eff Buck/Boost Re 3V, 3x3 TQFN Learn More about Renesas / Intersil renesas isl9120 buck boost regulator	Datasheet	7,474On Order On Order Ship Dates Mfr. #: ISL9120IRTNZ Stock: 0 On Order: 614 Pending 1,960 Expected 12/25/2026 4,900 Expected 5/10/2027 Factory Lead-Time: 30 Weeks	$2.71 $1.94 $1.75 $1.55 View $1.41 $1.36 $1.34 $1.30	Min.: 1 Mult.: 1			SMD/SMT	TQFN-EP-12	Boost, Buck	3.3 V	800 mA	1 Output	41 uA	- 40 C	+ 85 C	ISL9120	Tray
	Switching Voltage Regulators Hi-Eff Buck/Boost Re 3V, 3x3 TQFN ISL9120IRTNZ-T Renesas / Intersil 1: $2.45 2,750Expected 1/20/2027	Mfr. Part # ISL9120IRTNZ-T Mouser Part # 968-ISL9120IRTNZ-T	Renesas / Intersil	Switching Voltage Regulators Hi-Eff Buck/Boost Re 3V, 3x3 TQFN Learn More about Renesas / Intersil renesas isl9120 buck boost regulator	Datasheet	2,750Expected 1/20/2027	Cut Tape $2.45 $1.81 $1.65 $1.48 View Reel $1.28 $1.39 $1.35 $1.30 $1.28	Min.: 1 Mult.: 1 : 3,000			SMD/SMT	TQFN-EP-12	Boost, Buck	3.3 V	800 mA	1 Output		- 40 C	+ 85 C	ISL9120	Reel, Cut Tape