LM63CIMAX/NOPB - SMBus Temp Sensor and Fan Controller
N.º de pieza: LM63CIMAX/NOPB ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $5.0093 | $5,01 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
LM63CIMAX/NOPB Descripción general
A remote-diode temperature sensor uses a semiconductor junction as a temperature-sensitive element. The LM63 measures both a remote junction and its own local temperature, then makes digital measurements available through the SMBus interface. This makes the device part of the temperature-sensor and thermal-management IC hierarchy, rather than a general-purpose analog sensor. The integrated fan-control section is intended to compare measured temperature with programmable thresholds and manage cooling in systems such as desktop computers, industrial electronics, and embedded processors.
Key verified characteristics include an 8-SOIC package, a 0°C to 125°C advertised monitoring range, internal and external sensing channels, and 2-wire SMBus communication. The manufacturer describes the LM63 as factory-trimmed for series accuracy, while the exact remote-diode accuracy, fan-control thresholds, SMBus address, and electrical limits were not included in the supplied verified excerpts. Those missing values are intentionally not inferred. LCSC lists a starting price of $5.0093 as of 2026-10-08, and DigiKey and Mouser provide product, inventory, and pricing resources for current sourcing.
The LM63 is appropriate when a design needs remote junction monitoring and direct fan-control integration in one device. It is especially relevant to processor, GPU, ASIC, and other high-density electronic systems where a local thermal diode is available. Compared with a simple temperature sensor, the LM63 adds fan-control functionality and SMBus digital communication. Compared with a discrete thermal-control implementation, it can reduce component count and simplify firmware access to temperature data.
Designers should verify the exact package pinout, operating-voltage limits, SMBus addressing, remote-diode connection method, fan-drive ratings, and thermal accuracy against the current Texas Instruments datasheet before layout release. The remote diode should be placed close to the intended thermal region, with routing designed to minimize heat conduction and measurement error. This page synthesizes verified distributor listings, manufacturer descriptions, and design guidance without inventing missing electrical parameters.
Alternativas directas para LM63CIMAX/NOPB — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con LM63CIMAX/NOPB (mismo factor de forma y huella) — difiere en Package, Function, Remote Diode Accuracy, Fan Control Output, Interface.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
LM63CIMA/NOPB
✅ Sustitución directa✓ En stock
$2.05 / unidad
Ver hoja de datos →LM63CIMAX
✅ Sustitución directa✓ En stock
$2.18 / unidad
Ver hoja de datos →LM63CIMAX/NOPB Valores máximos y características eléctricas
| Product Type | Remote-diode digital temperature sensor with integrated fan control |
| Manufacturer | Texas Instruments |
| Local Temperature Channels | 1 |
| Remote Temperature Channels | 1 |
| Temperature Monitoring Range | 0°C to 125°C |
| Output Interface | 2-wire SMBus |
| Encapsulado | 8-pin SOIC |
| Tipo de montaje | Surface mount |
| Remote Sensor Type | Diode-connected transistor or thermal diode |
| Factory Trimming | Factory trimmed for series accuracy |
| Fan Control | Integrated fan control |
| Temperature Measurement Channels | 2, internal and external |
Guía de configuración de pines de LM63CIMAX/NOPB 8-pin soic
Configuración de pines para LM63CIMAX/NOPB (encapsulado 8-pin soic). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para LM63CIMAX/NOPB.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
LM63CIMAX/NOPB es adecuado para 6 aplicacións: CPU and GPU Thermal Management, ASIC and FPGA Thermal Monitoring, Industrial Embedded Systems, Server and Storage Equipment, Desktop and Portable Computing, Robotics and Power Electronics.
CPU and GPU Thermal Management
LM63CIMAX/NOPB is well suited to processor and GPU cooling systems because TI identifies remote thermal diodes in these devices as supported sensing sources. Place the LM63 between the remote diode and a system controller, then use the integrated fan-control function to respond to rising temperature. The device monitors both the remote junction and its own local temperature, while the 2-wire SMBus interface supports digital access from firmware. The exact fan-drive current and threshold behavior must be confirmed in the current TI datasheet before selecting a fan or defining protection limits.
Recomendado
ASIC and FPGA Thermal Monitoring
The LM63CIMAX/NOPB can monitor a thermal diode or diode-connected transistor exposed in an ASIC or FPGA package, providing a remote temperature input for system-level cooling control. Its local channel adds package or board-level context, while the integrated fan-control section reduces the need for a separate discrete controller. The remote sensor should be connected according to the LM63 layout guidance so that parasitic resistance does not distort the measurement. Verify the supported diode characteristics and SMBus command implementation for the specific target device.
Recomendado
Industrial Embedded Systems
LM63CIMAX/NOPB fits industrial embedded equipment that needs local supervision of a thermal diode together with automatic fan control. The 2-wire SMBus interface allows a controller to read temperature data and manage thermal policy without relying only on analog thresholds. Because the advertised monitoring range is 0°C to 125°C, designers should confirm whether the full system requirement remains within the device’s guaranteed operating limits. Provide stable supply bypassing and isolate the remote sensor routing from high-current switching paths to avoid measurement errors.
Recomendado
Server and Storage Equipment
The LM63 can provide remote temperature sensing and integrated fan-control functions in server or storage systems where processors and ASICs expose thermal diodes. Combining a local temperature measurement with a remote junction measurement helps firmware identify system-level thermal changes. The LM63CIMAX/NOPB’s SMBus interface is appropriate for centralized chassis monitoring. Design around the exact LM63 electrical limits and fan outputs, and ensure the remote diode path is routed as a compact, controlled-temperature network to preserve measurement accuracy.
Recomendado
Desktop and Portable Computing
LM63CIMAX/NOPB is appropriate for desktop-computer and compact computing designs that need CPU thermal monitoring with local fan management. TI specifically lists processors and GPUs as target applications for the LM63 remote-diode architecture. The sensor’s SMBus output lets the host controller record temperatures and adjust cooling behavior. Placement near the system’s thermal-control electronics can help with local monitoring, but the remote diode should follow the manufacturer’s recommended connection and layout pattern. Verify power, accuracy, and fan-drive details from the current datasheet.
Recomendado
Robotics and Power Electronics
LM63CIMAX/NOPB can support thermal supervision in robotics and power-electronics modules where a semiconductor junction is available as a temperature indicator and a controllable fan is useful. The local channel supports monitoring near the controller while the remote channel tracks the power device. Integrated fan control can simplify a basic closed-loop cooling design, although the exact output rating and fault behavior are not included in the supplied data. Confirm those specifications and the remote-diode connection method before applying the part to high-power converters.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para LM63CIMAX/NOPB — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | LM63CIMA/NOPB | LM63CIMAX |
|---|---|---|---|
| Product Type | Remote-diode temperature sensor with integrated fan control | Remote-diode temperature sensor with integrated fan control | Remote-diode temperature sensor with integrated fan control |
| Temperature Channels | 1 local and 1 remote | 1 local and 1 remote | 1 local and 1 remote |
| Package | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Remote Sensor Type | Diode-connected transistor or thermal diode | Diode-connected transistor or thermal diode | Diode-connected transistor or thermal diode |
| Fan Control | Integrated | Integrated | Integrated |
Diferenciadores clave
- Combines remote and local temperature measurement with integrated fan control (frente a LM63CIMAX)
- TI cross-reference support (frente a LM63CIMA/NOPB)
- Processor, GPU, and ASIC thermal-diode targeting (frente a Generic temperature-sensor alternatives)
- Digital system integration (frente a Analog-only temperature sensors)
Notas de diseño
Route the remote-diode connection as a compact, tightly controlled network and follow the LM63 manufacturer layout guidance. The remote sensor is intended to measure a diode-connected transistor or thermal diode, so trace length, copper area, vias, and nearby heat sources can affect the reported temperature. Keep the remote connection away from fan-current switching paths and high-power inductors, and provide a quiet ground return for the sensor and SMBus circuitry.
Confirm the LM63CIMAX/NOPB supply-voltage limits and fan-output ratings from the current TI datasheet before designing the power tree. The supplied verified data confirms an 8-pin SOIC device and SMBus thermal-monitoring function, but it does not provide the electrical current, voltage, or fan-drive limits. Use the manufacturer’s recommended bypass and decoupling arrangement, and ensure the fan supply and drive path remain within the verified operating conditions.
Do not treat the LM63CIMAX/NOPB as a generic thermistor substitute. The device uses a remote-diode architecture and an SMBus command interface, so the sensor connection, register behavior, and fan-control configuration must follow the LM63 documentation. Validate the package pinout, SMBus address, remote-diode polarity, and control thresholds during schematic review. A software-readable temperature alone does not guarantee that a replacement preserves the original thermal-control behavior.
Place the sensor and its associated bypass components near the thermal-control electronics and keep the SMBus routing away from noisy switching nodes. The local channel can provide board-level context, while the remote channel represents the protected junction only when the physical sensor placement and routing are correct. Confirm whether the system requires a remote transistor on the board or a thermal diode exposed by the target processor, and follow the manufacturer’s recommended grounding and fan-drive arrangement.
Información de cumplimiento
The supplied verified excerpts do not state RoHS, REACH, halogen-free, lead-free, or conflict-minerals status. AEC-Q100 is not applicable to the listed LM63 ordering information because automotive qualification was not provided.
