Integrated Circuits (ICs)

ISL91108IIAZ-T

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Renesas Electronics Corporation

HIGH EFFICIENCY BUCK-BOOST REGULATOR WITH 4.2A SWITCHES, ADJ / TAPE & REEL ROHS COMPLIANT: YES

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DocumentsISL91108 Datasheet

Integrated Circuits (ICs)

ISL91108IIAZ-T

Active

Renesas Electronics Corporation

HIGH EFFICIENCY BUCK-BOOST REGULATOR WITH 4.2A SWITCHES, ADJ / TAPE & REEL ROHS COMPLIANT: YES

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DocumentsISL91108 Datasheet

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	ISL91108IIAZ-T

Current - Output	3.7 A
Frequency - Switching	2.6 MHz
Function	Step-Up/Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	WLCSP, 20-UFBGA
Supplier Device Package	20-WLCSP
Synchronous Rectifier	True
Topology	Buck-Boost
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	1.8 V
Voltage - Output (Max) [Max]	5.2 V
Voltage - Output (Min/Fixed)	1 V

ISL91108 Series

Part	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Output Configuration	Function	Topology	Package / Case	Voltage - Input (Min) [Min]	Output Type	Number of Outputs	Voltage - Input (Max) [Max]	Frequency - Switching	Mounting Type	Current - Output	Voltage - Output (Min/Fixed)	Voltage - Output (Max) [Max]	Output Type	Regulator Topology	Utilized IC / Part	Voltage - Input [Min]	Voltage - Input [Max]	Supplied Contents	Board Type	Main Purpose	Voltage - Output	Outputs and Type	Outputs and Type	Contents
Renesas Electronics Corporation ISL91108IINZ-T7A	85 °C	-40 °C	20-WLCSP	Positive	Step-Up/Step-Down	Buck-Boost	20-UFBGA WLCSP	1.8 V	1.81 mOhm	1	5.5 V	2.6 MHz	Surface Mount	3.7 A	3.3 V
Renesas Electronics Corporation ISL91108IIAZ-T	85 °C	-40 °C	20-WLCSP	Positive	Step-Up/Step-Down	Buck-Boost	20-UFBGA WLCSP	1.8 V		1	5.5 V	2.6 MHz	Surface Mount	3.7 A	1 V	5.2 V	Adjustable
Renesas Electronics Corporation ISL91108IINR-EVZ												2.5 MHz		1.5 A				Buck-Boost	ISL91108	1.8 V	5.5 V	Board(s)	Fully Populated	DC/DC Step Up or Down	3.3 V	Non-Isolated	1
Renesas Electronics Corporation ISL91108IIN-EVZ												2.5 MHz		1.5 A				Buck-Boost	ISL91108	1.8 V	5.5 V			DC/DC Step Up or Down	3.3 V	1 Non-Isolated Output		Board(s)
Renesas Electronics Corporation ISL91108IINZ-T	85 °C	-40 °C	20-WLCSP	Positive	Step-Up/Step-Down	Buck-Boost	20-UFBGA WLCSP	1.8 V	1.81 mOhm	1	5.5 V	2.6 MHz	Surface Mount	3.7 A	3.3 V
Renesas Electronics Corporation ISL91108IIAZ-T7A	85 °C	-40 °C	20-WLCSP	Positive	Step-Up/Step-Down	Buck-Boost	20-UFBGA WLCSP	1.8 V		1	5.5 V	2.6 MHz	Surface Mount	3.7 A	1 V	5.2 V	Adjustable
Renesas Electronics Corporation ISL91108IIA-EVZ												2.5 MHz		1.5 A				Buck-Boost	ISL91108	1.8 V	5.5 V	Board(s)	Fully Populated	DC/DC Step Up or Down	3.3 V	Non-Isolated	1

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tape & Reel (TR)	3000	$ 1.01
		6000	$ 0.97

Description

General part information

ISL91108 Series

The ISL91108 is a highly integrated buck-boost switching regulator that accepts input voltages either above or below the regulated output voltage. Unlike other buck-boost regulators, this regulator automatically transitions between operating modes without significant output disturbance.

This device is capable of delivering up to 2.7A of burst current (PVIN = 3V, VOUT= 3.3V), and provides excellent efficiency due to its fully synchronous 4-switch architecture. A no-load quiescent current of only 27.5µA also optimizes efficiency under light-load conditions. Forced PWM and/or synchronization to an external clock may also be selected for noise-sensitive applications.

The ISL91108 is designed for standalone applications and supports a 3.3V fixed output voltage or variable output voltages with an external resistor divider. Output voltages as low as 1V or as high as 5.2V are supported using an external resistor divider.

Documents

Technical documentation and resources

ISL91108 Datasheet

Datasheet