Overview
Description
The ISL9110 and ISL9112 are highly-integrated Buck-Boost switching regulators that accept input voltages either above or below the regulated output voltage. Unlike other Buck-Boost regulators, these regulators automatically transition between operating modes without significant output disturbance.
Both parts are capable of delivering up to 1.2A output current, and provide excellent efficiency due to their fully synchronous 4-switch architecture. No-load quiescent current of only 35µA 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 ISL9110 is designed for standalone applications and supports 3.3V and 5V 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 ISL9110 and ISL9112 require only a single inductor and very few external components. Power supply solution size is minimized by a tiny 3mmx3mm package and a 2.5MHz switching frequency, which further reduces the size of external components.
Features
- 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: Up to 1.2A
- High Efficiency: Up to 95%
- 35µA Quiescent Current Maximizes Light-load Efficiency
- 2.5MHz Switching Frequency Minimizes External Component Size
- Selectable Forced-PWM Mode and External Synchronization
- I2C Interface (ISL9112)
- Fully Protected for Overcurrent, Over-temperature and Undervoltage
- Small 3mmx3mm TDFN Package
Comparison
Applications
- Regulated 33V from a Single Li-Ion Battery
- Smart Phones and Tablet Computers
- Handheld Devices
- Point-of-Load Regulators
Design & Development
Software & Tools
Software & Tools
| Software title
|
Software type
|
Company
|
|---|---|---|
| iSim:PE Offline Simulation Tool iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.
|
Simulator | Renesas |
1 item
|
||
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
Pkg. Type |
Carrier Type |
Moisture Sensitivity Level (MSL) |
Price (USD) | 1ku |
Buy / Sample |
|
|---|---|---|---|---|---|
| Part Number | |||||
ISL9110BIRTAZ Active Samples Available |
TDFN | Tray | 3 | Get Samples, | |
ISL9110BIRTAZ-T Active Samples Available |
TDFN | Reel | 3 | Get Samples, | |
ISL9110IRT7Z Active Samples Available |
TDFN | Tray | 3 | Get Samples, | |
ISL9110IRT7Z-T Active Samples Available |
TDFN | Reel | 3 | Get Samples, | |
ISL9110IRT7Z-T7A Active Samples Available
Buy Now
|
TDFN | Reel | 3 | 1.686 | Get Samples, |
ISL9110IRTAZ Active Samples Available |
TDFN | Tray | 3 | Get Samples, | |
ISL9110IRTAZ-T Active Samples Available |
TDFN | Reel | 3 | Get Samples, | |
ISL9110IRTAZ-T7A Active Samples Available |
TDFN | Reel | 3 | 1.945 | Get Samples, |
ISL9110IRTNZ Active Samples Available
Buy Now
|
TDFN | Tube | 3 | Get Samples, | |
ISL9110IRTNZ-T Active Samples Available |
TDFN | Reel | 3 | Get Samples, | |
ISL9110IRTNZ-T7A Active Samples Available
Buy Now
|
TDFN | Reel | 3 | 1.945 | Get Samples, |
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