LM26CIM5X-YPE/NOPB - ±3°C Factory Preset Thermostat | Texas Instruments
料号： LM26CIM5X-YPE/NOPB ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.85 | $0.85 |
| 10 | $0.76 | $7.60 |
| 100 | $0.68 | $68.00 |
| 500 | $0.61 | $305.00 |
| 1,000 | $0.55 | $550.00 |
LM26CIM5X-YPE/NOPB 概述
A thermostat is a temperature switch that triggers a digital output when the temperature crosses a preset threshold. The LM26 is a solid-state thermostat, meaning it uses semiconductor sensing rather than mechanical contacts, offering higher reliability and faster response. It belongs to the temperature sensor hierarchy: thermostat -> temperature switch -> temperature sensor -> sensor -> electronic component. This device is specifically the LM26NV variant, which omits the analog VTEMP output, focusing solely on digital trip functionality.
Key features include ±3°C accuracy over the full operating range, a fixed trip point of 115°C, and an active-low open-drain output that can sink current to drive external loads or interface with logic. The device also includes a built-in hysteresis of 10°C (typical) to prevent output oscillation. The SOT-23-5 package is lead-free and RoHS compliant, suitable for surface-mount assembly.
Technically, the LM26 uses a bandgap reference and a DAC to set the trip point, with a comparator that monitors the temperature sensor output. The open-drain output requires an external pull-up resistor, typically 10kΩ, to define the logic-high level. The device operates over a temperature range of -55°C to 125°C, making it suitable for harsh environments. Its low supply current of 40µA (typical) ensures minimal thermal self-heating, preserving accuracy.
Typical applications include over-temperature protection for power supplies, battery chargers, motor controllers, and industrial equipment. The 115°C trip point is well-suited for protecting components that must not exceed this temperature, such as power transistors and voltage regulators. The small footprint and low cost make it ideal for high-volume consumer and automotive electronics.
When designing with this device, ensure the open-drain output is properly pulled up and that the supply voltage is decoupled with a 0.1µF ceramic capacitor close to the V+ pin. The thermal path to the PCB should be optimized to ensure accurate sensing of the target component's temperature.
直接替换替代料： LM26CIM5X-YPE/NOPB ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
LM26CIM5-YPE/NOPB
✅ 直接替换📋 参考替代料（不在目录中）
LM26CIM5X-ZHA
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LM26CIM5X-SHA
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LM26CIM5X-TPA
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TMP302BDRLR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LM26CIM5X-YPE/NOPB 最大额定值与电气特性
| Trip Point Temperature | 115°C (factory preset) |
| Accuracy | ±3°C |
| Supply Voltage Range | 2.7 V to 5.5 V |
| 输出类型 | Active Low, Open Drain |
| Output Function | Digital (thermostat) |
| Hysteresis | 10°C (typical) |
| 电源电流 | 40 µA (typical) |
| 工作温度范围 | -55°C to +125°C |
| 封装 / 外壳 | SOT-23-5 (DBV) |
| 安装类型 | Surface Mount |
| 引脚数 | 5 |
| RoHS 状态 | Compliant |
| Lead-Free | Yes |
LM26CIM5X-YPE/NOPB 引脚配置
| 引脚 1 | V+ — Supply voltage input (2.7V to 5.5V) |
| 引脚 2 | GND — Ground |
| 引脚 3 | OS — Digital output (active low, open drain) |
| 引脚 4 | NC — No connect |
| 引脚 5 | NC — No connect |
典型应用
LM26CIM5X-YPE/NOPB 适用于 6 应用s: Over-Temperature Protection for Power Supplies, Battery Charger Thermal Protection, Motor Controller Over-Temperature Protection, Industrial Equipment Over-Temperature Alarm, Automotive Electronics Thermal Protection, Consumer Electronics Over-Temperature Protection.
Over-Temperature Protection for Power Supplies
The LM26CIM5X-YPE/NOPB is ideal for monitoring the temperature of power supply components such as MOSFETs, diodes, and transformers. Its 115°C trip point ensures that these components are shut down before they exceed safe operating temperatures. The active-low open-drain output can directly drive a shutdown pin on a PWM controller or a logic gate to disable the supply. With ±3°C accuracy and a low supply current of 40µA, it adds minimal power overhead. The SOT-23-5 package allows placement close to the heat source for accurate sensing. In a typical design, the output is pulled up to the logic rail with a 10kΩ resistor and connected to an enable pin. This provides a simple, reliable thermal protection solution without the need for a microcontroller.
推荐
Battery Charger Thermal Protection
In battery charging applications, the LM26CIM5X-YPE/NOPB monitors the temperature of the charging circuit or the battery pack itself. The 115°C trip point is suitable for protecting lithium-ion batteries from thermal runaway. The open-drain output can be connected to the charger's enable pin to halt charging when the temperature exceeds the threshold. The device's low power consumption is beneficial for portable devices, as it does not significantly drain the battery. The small SOT-23-5 package fits easily on a charger PCB. With ±3°C accuracy, it provides reliable protection. The hysteresis of 10°C prevents rapid on/off cycling, ensuring stable operation. This thermostat can be used in conjunction with a battery management IC to provide an additional layer of safety.
推荐
Motor Controller Over-Temperature Protection
Motor controllers often generate significant heat due to high currents. The LM26CIM5X-YPE/NOPB can be mounted on the heatsink or near the power stage to monitor temperature. When the temperature exceeds 115°C, the output goes low, signaling the microcontroller to reduce motor current or shut down the driver. The open-drain output is compatible with logic-level inputs. The device's wide supply voltage range (2.7V to 5.5V) allows it to be powered from the same rail as the motor driver. The small package is easy to place in tight layouts. With ±3°C accuracy, it ensures the motor driver is protected from overheating. The low supply current minimizes self-heating, preserving accuracy. This thermostat is a cost-effective solution for thermal management in motor control applications.
推荐
Industrial Equipment Over-Temperature Alarm
In industrial equipment, the LM26CIM5X-YPE/NOPB can be used to trigger an alarm or shut down machinery when the temperature exceeds 115°C. The active-low output can drive a buzzer, LED, or relay through a transistor. The device's operating temperature range of -55°C to +125°C makes it suitable for harsh environments. The SOT-23-5 package is robust and reliable. With ±3°C accuracy, it provides precise temperature monitoring. The low supply current is advantageous for always-on monitoring. The open-drain output allows easy interfacing with PLCs or microcontrollers. This thermostat can be used in motor control cabinets, power distribution units, and other industrial systems to prevent overheating and equipment damage.
推荐
Automotive Electronics Thermal Protection
The LM26CIM5X-YPE/NOPB is suitable for automotive applications where over-temperature protection is critical. It can monitor the temperature of power modules, LED drivers, or engine control units. The 115°C trip point is appropriate for under-hood environments. The device's small size and low cost make it ideal for high-volume automotive production. It operates from the vehicle's 5V or 3.3V supply. The open-drain output can be connected to a microcontroller's interrupt pin to trigger a warning or shutdown. With ±3°C accuracy, it ensures reliable protection. The device is not AEC-Q100 qualified, but it can still be used in non-safety-critical applications. For automotive-grade parts, consider the LM26CIM5X-YPE/NOPB's Q1 variants if available.
推荐
Consumer Electronics Over-Temperature Protection
In consumer electronics such as laptops, gaming consoles, and smart home devices, the LM26CIM5X-YPE/NOPB can protect sensitive components from overheating. The 115°C trip point is suitable for CPUs, GPUs, and power management ICs. The small SOT-23-5 package is ideal for compact PCBs. The device's low power consumption is beneficial for battery-powered devices. The open-drain output can be connected to a thermal shutdown pin or a microcontroller. With ±3°C accuracy, it provides reliable protection. The hysteresis prevents oscillation. This thermostat is a cost-effective solution for consumer products where thermal management is essential. It can be placed near heat-generating components to ensure accurate temperature sensing.
推荐
推荐产品汇总
工程参考数据： LM26CIM5X-YPE/NOPB ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | LM26CIM5-YPE/NOPB | LM26CIM5X-ZHA | TMP302BDRLR | ADT6401SRJZ-RL7 |
|---|---|---|---|---|---|
| Package | SOT-23-5 (DBV) | SOT-23-5 (DBV) | SOT-23-5 (DBV) | SOT-23-5 (DBV) | SOT-23-6 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Accuracy | ±3°C | ±3°C | ±3°C | ±0.5°C (typical) | ±1°C (typical) |
| Supply Voltage Range | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 1.4V to 5.5V | 2.7V to 5.5V |
| Output Type | Active Low, Open Drain | Active Low, Open Drain | Active Low, Open Drain | Active Low, Open Drain | Active Low, Open Drain |
| Hysteresis | 10°C (typical) | 10°C (typical) | 10°C (typical) | 2°C (typical) | 5°C (typical) |
| Supply Current | 40µA (typical) | 40µA (typical) | 40µA (typical) | 40µA (typical) | 50µA (typical) |
关键差异点
- Factory-preset trip point at 115°C （对比 TMP302BDRLR)
- Wide supply voltage range (2.7V to 5.5V) （对比 ADT6401SRJZ-RL7)
- Small SOT-23-5 package （对比 ADT6401SRJZ-RL7)
设计说明
Place a 0.1µF ceramic capacitor close to the V+ pin to decouple the supply. The open-drain output requires an external pull-up resistor, typically 10kΩ, to V+ or the logic supply. Ensure the pull-up voltage does not exceed the absolute maximum rating of the output pin.
For accurate temperature sensing, mount the LM26CIM5X-YPE/NOPB close to the heat source and ensure good thermal contact via PCB copper. Avoid placing it near other heat-generating components that could cause false trips. The device's low supply current minimizes self-heating, but proper layout is still essential.
Do not leave the open-drain output floating; always use a pull-up resistor. Also, ensure the supply voltage is within the specified range (2.7V to 5.5V) to avoid incorrect operation. The trip point is fixed at 115°C, so verify that this is suitable for your application before design-in.
合规信息
RoHS compliant per TI product page. Not AEC-Q100 qualified. Lead-free as per datasheet.
