Integrated Circuits (ICs)

ISL91127IRNZ-T7A

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Renesas Electronics Corporation

HIGH EFFICIENCY BUCK-BOOST REGULATOR WITH 4.5A SWITCHES

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DocumentsDatasheet Product Change Notice EN

Integrated Circuits (ICs)

ISL91127IRNZ-T7A

Active

Renesas Electronics Corporation

HIGH EFFICIENCY BUCK-BOOST REGULATOR WITH 4.5A SWITCHES

Deep-Dive with AI

DocumentsDatasheet Product Change Notice EN

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	ISL91127IRNZ-T7A

Current - Output	2 A
Frequency - Switching	2.5 MHz
Function	Step-Down, Step-Up
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	1.81 mOhm
Package / Case	20-VFQFN Exposed Pad
Supplier Device Package	20-QFN (4x4)
Synchronous Rectifier	True
Topology	Buck-Boost
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	1.8 V
Voltage - Output (Min/Fixed)	3.3 V

ISL91127 Series

High Efficiency Buck-Boost Regulator with 4.5A Switches

Part	Supplied Contents	Frequency - Switching	Voltage - Output	Current - Output	Voltage - Input [Min]	Voltage - Input [Max]	Utilized IC / Part	Main Purpose	Board Type	Outputs and Type	Outputs and Type	Regulator Topology	Voltage - Output [Max]	Voltage - Output [Min]	Supplier Device Package [y]	Supplier Device Package [x]	Supplier Device Package	Voltage - Output (Min/Fixed)	Number of Outputs	Mounting Type	Output Type	Topology	Package / Case	Voltage - Input (Min) [Min]	Output Configuration	Function	Voltage - Input (Max) [Max]	Operating Temperature [Max]	Operating Temperature [Min]
Renesas Electronics Corporation ISL91127IRN-EVZ	Board(s)	2.5 MHz	3.3 V	2 A	1.8 V	5.5 V	ISL91127IR	DC/DC Step Up or Down	Fully Populated	Non-Isolated	1	Buck-Boost
Renesas Electronics Corporation ISL91127II2A-EVZ	Board(s)		3.3 V	2.1 A	1.8 V	5.5 V	ISL91127	DC/DC Step Up or Down	Fully Populated	Non-Isolated	1	Buck-Boost
Renesas Electronics Corporation ISL91127IRA-EVZ	Board(s)	2.5 MHz		2 A	1.8 V	5.5 V	ISL91127IR	DC/DC Step Up or Down	Fully Populated	Non-Isolated	1	Buck-Boost	5 V	2 V
Renesas Electronics Corporation ISL91127IIA-EVZ	Board(s)	2.5 MHz		2.1 A	1.8 V	5.5 V	ISL91127	DC/DC Step Up or Down	Fully Populated	Non-Isolated	1	Buck-Boost	5.2 V	1 V
Renesas Electronics Corporation ISL91127IINZ-T		2.5 MHz		2.1 A											1.74	2.15	20-WLCSP	3.3 V	1	Surface Mount	1.81 mOhm	Buck-Boost	20-UFBGA WLCSP	1.8 V	Positive	Step-Up/Step-Down	5.5 V
Renesas Electronics Corporation ISL91127IIN-EVZ	Board(s)	2.5 MHz		2.1 A	1.8 V	5.5 V	ISL91127	DC/DC Step Up or Down	Fully Populated	Non-Isolated	1	Buck-Boost	5.2 V	1 V
Renesas Electronics Corporation ISL91127II2AZ-T		2.5 MHz		2.1 A											1.74	2.15	20-WLCSP		1	Surface Mount		Buck-Boost	20-UFBGA WLCSP	1.8 V	Positive	Step-Up/Step-Down	5.5 V
Renesas Electronics Corporation ISL91127II2AZ-T7A		2.5 MHz		2.1 A											1.74	2.15	20-WLCSP		1	Surface Mount		Buck-Boost	20-UFBGA WLCSP	1.8 V	Positive	Step-Up/Step-Down	5.5 V
Renesas Electronics Corporation ISL91127IRNZ-T7A		2.5 MHz		2 A													20-QFN (4x4)	3.3 V	1	Surface Mount	1.81 mOhm	Buck-Boost	20-VFQFN Exposed Pad	1.8 V	Positive	Step-Down Step-Up	5.5 V	85 °C	-40 °C

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 3.21
		10	$ 2.88
		25	$ 2.73
		100	$ 2.36
	Digi-Reel®	1	$ 3.21
		10	$ 2.88
		25	$ 2.73
		100	$ 2.36
	Tape & Reel (TR)	250	$ 1.58
		500	$ 1.50
Newark	Each (Supplied on Cut Tape)	1	$ 4.60
		10	$ 2.98
		25	$ 2.56
		50	$ 2.32
		100	$ 2.08
		250	$ 1.83
		500	$ 1.61
		1000	$ 1.56

Description

General part information

ISL91127 Series

The ISL91127 and ISL91127IR are high-current buck-boost switching regulators for systems using new battery chemistries. They use Renesas' proprietary buck-boost algorithm to maintain voltage regulation while providing excellent efficiency and very low output voltage ripple when the input voltage is close to the output voltage.

They are 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. The ISL91127 and ISL91127IR have a fully synchronous low ON-resistance, 4-switch architecture and a low quiescent current of only 30µA optimize efficiency under all load conditions.

The ISL91127 and ISL91127IR support stand-alone applications with a fixed 3.3V or 3.5V output voltage or adjustable output voltage with an external resistor divider. Output voltages as low as 1.0V or as high as 5.2V are supported.