High Efficiency Buck-Boost Regulator with 4.2A Switches
ページセクションへ移動：
Back to top
ECADモデルを調べる
概要
Description
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. 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.
The ISL91108 requires only a single inductor and very few external components. Power supply solution size is minimized by a 2.34mm x 1.72mm WLCSP and a 2.6MHz switching frequency, which further reduces the size of external components.
特長
- 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 1.6A DC (PVIN = 2.8V, VOUT = 3.3V)
- Burst current: up to 2.7A (PVIN = 3V, VOUT = 3.3V, tON<600µs, t = 4.6ms)
- High efficiency: up to 95%
- 27.5µA quiescent current maximizes light load efficiency
- 2.6MHz switching frequency minimizes external component size
- Selectable forced PWM mode and external synchronization
- Fully protected for short-circuit, over-temperature, and undervoltage
- Small 2.34mm x 1.72mm WLCSP
アプリケーション
アプリケーション
- Smartphones and tablets
- Wireless communication devices
- 2G/3G/4G power amplifiers
設計・開発
ソフトウェア／ツール
ソフトウェア／ツール
| iSim:PE Offline Simulation TooliSim 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 | ルネサス |
ボード＆キット
ボード＆キット
Highly-Integrated Buck-Boost Switching Regulator Evaluation Board
The ISL91108IIA-EVZ evaluation platform allows for quick evaluation of the ISL91108 highly-integrated buck-boost switching regulator that accepts input voltages either...
Highly-Integrated Buck-Boost Switching Regulator Evaluation Board
The ISL91108IIN-EVZ evaluation platform allows for quick evaluation of the ISL91108 highly-integrated buck-boost switching regulator that accepts input voltages either...
モデル
ECADモデル
[製品選択]テーブル内の製品名をクリックするとSamacSysが提供する回路図シンボル、PCBフットプリント、3D CADモデルがご確認いただけます。 お探しのシンボルやモデルが見つからない場合、Webサイトから直接リクエストできます。
製品選択
Processing table
Tips for Using This Parametric Table:
- Hide Filters button in header: Collapse or expands filters
- Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
- Reset button in header: Reset all filters to the page default
- Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
- Export button in header: Export the filtered results of the table to an Excel document
- Filter parts search bar in header: Type to filter table results by part number
- Hide column button in column headers: Select to hide columns in table
- AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
- Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
- Document icon next to product name in row: View the featured document for this product
- Chip icon next to the right of the document icon in row: View the block diagram for this product
- Cart icon to the right of the chip icon: Indicates that samples are available for this product