LM56CIM/NOPBIn StockTexas Instruments
LM56CIM/NOPB is a dual-output, resistor-programmable temperature switch from Texas Instruments. It offers ±3°C accuracy, ultra-low 0.23 mA operating current, and two independent threshold outputs. Ideal for thermal management in consumer electronics, industrial controls, and telecom equipment. Available in SOIC-8 package with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- LM56CIM/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual resistor-programmable temperature trip points with ±3°C max accuracy for precise thermal monitoring
- Ultra-low quiescent current of 0.23 mA enabling battery-powered and energy-sensitive designs
- Two independent open-drain CMOS outputs supporting flexible fan control, shutdown, and alert logic
- Wide operating voltage range and surface-mount SOIC-8 package for compact, high-reliability PCB integration
- RoHS-compliant (JESD-609 e3) with plastic/epoxy housing suitable for commercial and industrial temperature ranges
Applications
The LM56CIM/NOPB is widely used in thermal protection and management circuits for desktop and notebook computers, where its dual programmable thresholds enable staged fan-speed control and emergency shutdown. It is equally suited for industrial automation equipment and telecom line cards that require accurate over-temperature alerts without adding significant power consumption. Battery-operated instruments and portable medical devices also benefit from its 0.23 mA supply current and compact surface-mount footprint.
Specifications
| YTEOL | 0 |
| Accuracy-Max (Cel) | 3Cel |
| Body Breadth | 3.9mm |
| Body Height | 1.72mm |
| Body Length or Diameter | 4.89mm |
| Housing | PLASTIC |
| JESD-609 Code | e3 |
| Mounting Feature | SURFACE MOUNT |
| Operating Current-Max | 0.23mA |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape/Style | RECTANGULAR |
| Sensors/Transducers Type | TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,DUAL TRIP POINT |
| Supply Voltage-Max | 10V |
| Supply Voltage-Min | 2.7V |
| Surface Mount | YES |
| Terminal Finish | MATTE TIN |
| Termination Type | SOLDER |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM56CIM/NOPB:
Switch/Digital Sensor, 3Cel, Rectangular, 8 Pin, Surface Mount
Frequently Asked Questions
What are the key electrical specifications of the LM56CIM/NOPB?
The LM56CIM/NOPB operates with a maximum supply current of 0.23 mA, providing two resistor-programmable temperature trip points with a maximum accuracy of ±3°C. It is packaged in a surface-mount SOIC-8 (Small Outline) plastic/epoxy housing measuring approximately 4.89 mm × 3.9 mm × 1.72 mm, and is RoHS-compliant per JESD-609 e3.
How are the temperature thresholds programmed on the LM56CIM/NOPB?
Both trip-point temperatures on the LM56CIM/NOPB are set by external resistor dividers connected to the V+ supply and the threshold input pins. Selecting the appropriate resistor values from the Texas Instruments datasheet formula allows engineers to program each threshold independently anywhere within the device's rated temperature range, offering maximum design flexibility without requiring firmware or one-time-programmable elements.
What are the typical applications for the LM56CIM/NOPB?
The LM56CIM/NOPB is commonly used in thermal management systems for PCs, servers, and telecom equipment, where its dual outputs can trigger graduated fan-speed control and emergency shutdown at separate temperature levels. It is also employed in industrial control panels, battery-powered instruments, and portable medical devices that need reliable over-temperature protection with minimal current draw.
What package and mounting options are available for the LM56CIM/NOPB?
The LM56CIM/NOPB comes in an SOIC-8 surface-mount package (Small Outline Packages) with a plastic/epoxy body, making it compatible with standard SMT assembly processes. Its compact body dimensions of 4.89 mm × 3.9 mm × 1.72 mm are well-suited for space-constrained PCB designs, and the /NOPB suffix confirms it is lead-free and RoHS-compliant.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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