Analog Devices Inc. LT8705/A 4スイッチバックブーストDC/DCコントローラ
Linear Technology/Analog Devices LT8705/A 4スイッチバックブーストDC/DCコントローラは高性能であり、出力電圧以上、以下、または同等の入力電圧で動作します。LT8705/Aには、統合入力電流は、入力電圧、出力電流、出力電圧フィードバックループがあります。LT8705/Aは、ほとんどのソーラー、車載、テレコム、バッテリ駆動システムとの互換性があります。このコントローラは、2.8V～80Vの広い入力および1.3V～80Vの出力範囲が特徴です。
The Analog Devices LT8705A includes a MODE pin to select among Burst Mode® operation, discontinuous or continuous conduction mode at light loads. Additional features include a 3.3V/12mA LDO, a synchronizable fixed operating frequency, and onboard gate drivers.
特徴
- Single inductor allows VIN above, below, or equal to regulated VOUT
- VIN range 2.8V (need EXTVCC > 6.4V) to 80V
- 1.3V to 80V VOUT range
- Quad N-channel MOSFET gate drivers
- Up to 98% efficiency for synchronous rectification
- Input and output current monitor pins
- Integrated input current, input voltage, output current, and output voltage feedback loops
- 100kHz to 400kHz synchronizable fixed frequency
- Clock output usable to monitor die temperature
- Available in 38-lead (5mm × 7mm) QFN and TSSOP
- Packages with the TSSOP modified for improved high voltage operation
アプリケーション
- High voltage buck-boost converters
- Input or output current limited converters
Additional Resources
Eliminate Switching Noise with 4-Switch Buck-Boost Controller with Pass-Thru Capability
There are several dc-to-dc converter topologies that can perform both step-up and step-down operations, from SEPIC to 4-switch topologies, but none of these solutions pass the input voltage directly to the output without actively switching — until now, that is.
Typical Application
公開: 2017-04-26
| 更新済み: 2022-03-11