ISL91127IR Buck-Boost Regulator

Renesas Electronics ISL91127IR Buck-Boost Regulator is a high-current buck-boost switching regulator for systems using new battery chemistries. It ISL91127IR uses a proprietary buck-boost algorithm to maintain voltage regulation while providing excellent efficiency. This device also has a very low output voltage ripple when the input voltage is close to the output voltage. The ISL91127IR is capable of delivering at least 2A continuous output current (VOUT = 3.3V) over a battery voltage range of 2.5V to 4.35V. This maximizes the energy utilization of advanced single-cell Li-ion battery chemistries that have significant capacity left at voltages below the system voltage. Its fully synchronous low ON-resistance, 4-switch architecture, and a low quiescent current of only 30μA optimize efficiency under all load conditions.

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Description Datasheet Availability Pricing (KRW) 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
Switching Frequency
Minimum Operating Temperature
Maximum Operating Temperature
Series
Packaging
Renesas / Intersil Switching Voltage Regulators High Efficiency Buck/BoostRegulator with 4.25A Switches in a
Datasheet
2,852In Stock
6,000Expected 11/12/2026
Cut Tape
₩4,354.4
₩3,255.3
₩2,973.4
₩2,663.4
View
Reel
₩2,311.1
Min.: 1
Mult.: 1
: 6,000
SMD/SMT QFN-20 Buck-Boost 1 V to 5.2 V 2.1 A 1 Output 30 uA 2.5 MHz - 40 C + 85 C ISL91127 Reel, Cut Tape
Renesas / Intersil Switching Voltage Regulators Buck/BoostRegw adj
Datasheet
808In Stock
Cut Tape
₩5,199.9
₩3,847.1
₩3,508.9
₩3,142.5
Reel
₩2,959.3
View
MouseReel Available
Min.: 1
Mult.: 1
: 250
SMD/SMT QFN-20 Buck-Boost 3.3 V 2.1 A 1 Output 30 uA 2.5 MHz - 40 C + 85 C ISL91127 Reel, Cut Tape, MouseReel
Renesas / Intersil Switching Voltage Regulators Buck/BoostRegw adj Vout, 4.25A Switches
Datasheet
4In Stock
500Expected 11/16/2026
Cut Tape
₩5,777.7
₩3,959.9
₩3,607.6
₩3,410.3
Reel
₩3,029.8
MouseReel Available
Min.: 1
Mult.: 1
: 250
SMD/SMT QFN-20 Buck-Boost 1 V to 5.2 V 2.1 A 1 Output 30 uA 2.5 MHz - 40 C + 85 C ISL91127 Reel, Cut Tape, MouseReel
Renesas / Intersil Switching Voltage Regulators High Efficiency Buck/BoostRegulator with 4.25A Switches in a
Datasheet
394In Stock
Cut Tape
₩4,354.4
₩3,255.3
₩2,973.4
₩2,663.4
View
Reel
₩2,311.1
MouseReel Available
Min.: 1
Mult.: 1
: 6,000
SMD/SMT QFN-20 Buck-Boost 3.3 V 2.1 A 1 Output 30 uA 2.5 MHz - 40 C + 85 C ISL91127 Reel, Cut Tape, MouseReel