LTM4663是一款完整的 1.5A µModule 热电冷却器(TEC)调节器，采用小型3.5mm × 4mm × 1.3mm LGA封装。封装中包含TEC控制器、线性功率级、开关稳压器、电感和支持组件。

LTM4663的工作输入电压范围为2.7V至5.5V，支持1.5A连续吸电流或源电流能力。只需要输入和输出电容。LTM4663集成了两个零漂移、轨到轨斩波放大器，可用作热敏电阻输入放大器和温度反馈控制环路。

LTM4663支持NTC、PTC热敏电阻和电阻温度检测器(RTD)。最大冷却和加热电流以及最大TEC电压都可以独立编程设置。

LTM4663提供符合LGA RoHS标准的端子表面。

应用

• TEC温度控制
• 光纤网络系统、光学模块
• LiDAR系统

• 内置两个零漂移、轨到轨斩波放大器
• 输入电压范围：2.7V至5.5V
• 1.5A驱动能力
• 1%精度2.5V内部基准电压输出
• 独立的可编程加热和冷却限流

• TEC电压和电流监控
• 可编程最大TEC电压
• 默认2MHz开关频率
• 可在1.85MHz至3.25MHz之间同步
• 支持NTC、PTC和RTD热传感器
• 3.5mm × 4mm × 1.3mm LGA封装

LTM4663EV#PBF，封装：25-Lead (4mm × 3.5mm × 1.3mm)，包装形式及数量：托盘，490，工作温度：-40 to 125C，AD官网报价：7.98（100-499个）；6.57（1000+个）

LTM4663IV#PBF，封装：25-Lead (4mm × 3.5mm × 1.3mm)，包装形式及数量：托盘，490，工作温度：-40 to 125C，AD官网报价：8.78（100-499个）；7.23（1000+个）

DC2902A：LTM4663 Demo Board | Ultrathin 1.5A Thermoelectric Cooler (TEC) μModule Regulator

Demonstration circuit DC2902A is a thermoelectric cooler (TEC) regulator featuring the LTM4663 μModule regulator. The demo board has a 2.7V to 5.5V input voltage range and can deliver up to 1.5A of sinking or sourcing current. Inside the LTM4663, a linear power stage works together with a PWM power stage to form an H-bridge configuration. The direction of the current fed through the TEC can be either positive (for cooling mode), or negative (for heating mode). The LTM4663 has two built-in zero drift, rail-to-rail chopper amplifiers which can serve as a thermistor input amplifier and form an analog temperature control loop. The LTM4663 provides a 1% accuracy 2.5V internal reference voltage to bias the thermistor temperature sensing circuit and to program the maximum TEC current and voltage limits for both the cooling and heating modes.

The demo board has a default 2MHz switching frequency and can be synchronized to an external clock from 1.85MHz to 3.25MHz applied to the EN/SY input pin (JP1: EN/SY). The clock high level must be above 2.1V and the clock low level must be below 0.8V. Maximum TEC current limit can be programmed with a resistor, R7 (default: 1.5A for cooling mode; –1.5A for heating mode). Maximum TEC voltage limit can be programmed with a resistor, R10 (default: 5V for cooling mode; –4.8V for heating mode). Other features include VTEC output for TEC voltage monitor and ITEC output for TEC current monitor

The LTM4663 datasheet gives a complete description of the operation and application information. The datasheet must be read in conjunction with the demo manual.