OVERVIEW
These devices are capable of delivering up to 2A of output current (PVIN = 2.8V, VOUT = 3.3V) and provide excellent efficiency due to their fully synchronous 4-switch architecture. No load quiescent current of only 45µA also optimizes efficiency under light-load conditions.
The ISL91106 and ISL91106A are designed for standalone applications. They support 3.3V and 3.4V fixed output voltages 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. The ISL91106 and ISL91106A require only a single inductor and very few external components. Power supply solution size is minimized by a 2.15mmx1.51mm WLCSP and a 2.5MHz switching frequency, which further reduces the size of external components.
KEY FEATURES
- ISL91106 with 3.8A switches
- ISL91106A with 4.2A switches
- Accepts input voltages above or below regulated output voltage
- Automatic and seamless transitions between buck and boost modes
- Input voltage range: 1.8V to 5.5V
- Output current (PVIN = 2.8V, VOUT = 3.3V):
- 2.1A (ISL91106A)
- 2A (ISL91106)
- High efficiency: up to 96%
- 45µA quiescent current maximizes light load efficiency
- 2.5MHz switching frequency minimizes external component size
- Selectable forced PWM mode
- Selectable bypass power saving mode
- Fully protected for over-temperature, overcurrent, and undervoltage
- Small 2.15mmx1.51mm WLCSP
BLOCK DIAGRAM

PARAMETRICS
Design Resources and Tools
Selection Tool
PowerCompass Online Tool
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Design Tool
PowerNavigator Software
Configure and monitor digital-DC devices. Easily change features and functions of your power supply design with a simple GUI.
Simulation Tool
iSim Online Designer
Select supporting components, build your schematic and validate your power management and op amp designs.
Cross Reference
Intersil Cross Reference
Cross-reference based on data from industry sources. Support for the online tool has been discontinued, but the data is still available.
Knowledge Base
Switching Regulators FAQs
Find answers to common questions, support articles and development hints.