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Linear Technology/Analog Devices LTC3871 Bidirectional PolyPhase® Synchronous Controllers are high-performance 100V/30V bidirectional two-phase controllers capable of operating in either buck or boost mode on demand. Depending on the control signal, LTC3871 regulates in buck mode from VHIGH-to-VLOW and boost mode from VLOW-to-VHIGH. These regulation capabilities make the LTC3871 controllers ideal for automotive dual battery systems.

The controllers regulate the maximum current delivered in either direction through an accurate current programming loop. The current programming loop allows the two batteries to supply energy to the load simultaneously by converting energy from one battery to the other.

Using a proprietary constant-frequency, current-mode architecture, the LTC3871 enhances the signal-to-noise ratio. This enhanced signal-to-noise ratio enables low-noise operation and delivers excellent current matching between phases.

Additional features of the LTC3871 include continuous or discontinuous operation, OV/UV monitors, accurate output current monitoring, independent loop compensation for buck and boost operation, and overcurrent protection.

Features

Unique Architecture Allows Dynamic Regulation of Input Voltage, Output Voltage or Current

VHIGH Voltages Up to 100V

VLOW Voltages Up to 30V

Synchronous Rectification: Up to 97% Efficiency

LTC-Proprietary Advanced Current Mode Control

±1% Voltage Regulation Accuracy Over Temperature

Accurate, Programmable Output Current Monitoring and Regulation for Both Buck and Boost Operation

Selectable Buck and Boost Current Sense Limits

Programmable DRVCC/EXTVCC Optimizes Efficiency

Programmable VHIGH UV and OV Thresholds

Programmable VLOW OV Threshold

Phase-Lockable Frequency: 60kHz to 460kHz

Multiphase/Multi-ICs Operation Up to 12 Phases

Selectable CCM/DCM Modes

Thermally Enhanced 48-Lead LQFP Package

Applications

Automotive 48V/12V Dual Battery Systems

Backup Power Systems

LTC3871HLXE#PBF

LTC3871ELXE#PBF

LTC3871ILXE#PBF

LTC3871HLXE#PBF制造商: Analog Devices Inc.

產品種類: 開關穩壓器

安裝風格: SMD/SMT

封裝 / 箱體: LQFP-48

輸出電壓: 1.2 V to 100 V

輸出電流: 30 A

輸出端數量: 1 Output

最大輸入電壓: 100 V

拓撲結構: Buck, Boost

最小輸入電壓: 1.2 V

開關頻率: 500 kHz

最小工作溫度: - 40 C

最大工作溫度: + 150 C

資格: AEC-Q100

系列: LTC3871

輸入電壓: 1.2 V to 100 V

工作溫度范圍: - 40 C to + 150 C

靜態電流: 8 mA

類型: Switching Regulator

商標: Analog Devices / Linear Technology

關閉: Shutdown

開發套件: DC2348A-A,DC2348A-B

負載調節: 0.01 %

濕度敏感性: Yes

工作電源電流: 8 mA

工廠包裝數量: 250

單位重量: 2.698 g