LMP8645MK Texas Instruments Integrated Circuit (Other) In Stock
Precision High Voltage Current Sense Amplifier by Texas Instruments. Features 95 dB CMRR, 20 µA max bias current, and 1700 µV input offset voltage. Ideal for industrial motor control, power management, and battery monitoring applications. Available in SOT-23 package with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 6
- Lifecycle
- OBSOLETE
- Datasheet
- LMP8645MK 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
- 95 dB Common-Mode Rejection Ratio (CMRR) for accurate differential sensing in noisy environments
- Low input offset voltage of 1700 µV max for high-precision current measurements
- High voltage operation supports wide supply range for industrial and automotive applications
- Voltage-feedback architecture with frequency compensation for stable closed-loop performance
- Compact R-PDSO-G6 (SOT-23) package for space-constrained designs
Applications
The LMP8645MK is widely used in industrial motor drives and servo controllers where accurate phase current sensing is critical. It also serves power supply monitoring systems, battery management circuits, and overcurrent protection designs. Its high CMRR and precision offset make it suitable for automotive on-board diagnostics and process-control instrumentation.
Specifications
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 20 µA |
| Bias Current-Max (IIB) @25C | 20 µA |
| Common-mode Reject Ratio-Nom | 95dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 1700 µV |
| JESD-30 Code | R-PDSO-G6 |
| JESD-609 Code | e4 |
| Low-Bias | NO |
| Low-Offset | NO |
| Micropower | NO |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 0.5V/us |
| Supply Current-Max | 2.7mA |
| Supply Voltage Limit-Max | 13.2V |
| Supply Voltage-Nom (Vsup) | 2.7V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Voltage Gain-Min | 1 |
| Wideband | NO |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LMP8645MK:
Amplifier, 1 Func, 1000uV Offset-Max, 0.135MHz Band Width, BICMOS, PDSO6
Amplifier, 1 Func, 1000uV Offset-Max, 0.135MHz Band Width, BICMOS, PDSO6
Frequently Asked Questions
What is the maximum common-mode rejection ratio of the LMP8645MK?
The LMP8645MK offers a typical common-mode rejection ratio (CMRR) of 95 dB, enabling accurate current sensing even when the common-mode voltage fluctuates significantly, which is essential in high-voltage motor control and power conversion applications.
What are the typical applications for the LMP8645MK current sense amplifier?
The LMP8645MK is designed for industrial motor drives, battery management systems, power supplies, and overcurrent protection circuits. Its precision high-voltage architecture makes it suitable for any application requiring accurate bidirectional or unidirectional current measurement across a shunt resistor.
What package does the LMP8645MK come in, and what is its maximum input offset voltage?
The LMP8645MK is packaged in a compact R-PDSO-G6 (SOT-23) 6-pin small-outline package. Its maximum input offset voltage is 1700 µV at 25°C, and the maximum input bias current is 20 µA, supporting precision measurements in space-constrained board designs.
Can the LMP8645MK replace other high-voltage current sense amplifiers?
Yes, the LMP8645MK can serve as an alternative to similar precision high-voltage current sense amplifiers from other manufacturers. When substituting, verify that the replacement matches the CMRR, offset voltage, input bias current, supply voltage range, and package footprint requirements of your design.
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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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