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Texas Instruments LMP8480MME-T/NOPB
- Part No.:
- LMP8480MME-T/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMP8480MME-T/NOPB.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,214
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Product details
Overview
LMP8480MME-T/NOPB from Texas Instruments is a unidirectional, high-side current sense amplifier with 20V/V fixed gain, 4.0–76V common-mode input range, ±80µV offset, 270kHz bandwidth, and VSSOP-8 package-designed for precision vehicle battery monitoring and telecom power rail sensing where supply voltage may match or exceed load voltage.
For engineers reviewing the LMP8480MME-T/NOPB datasheet, LMP8480MME-T/NOPB pinout, LMP8480MME-T/NOPB application, or LMP8480MME-T/NOPB equivalent, this page delivers verified pin functions, real-world use cases in automotive and energy systems, confirmed gain accuracy (±0.1% typ), thermal derating data (RθJA = 185°C/W), and validated alternatives with documented functional trade-offs.
Technical Context
The LMP8480MME-T/NOPB implements a two-stage architecture: first, a precision thin-film resistor-based voltage-to-current conversion of differential sense voltage (VSENSE), followed by a differential amplifier with internal 14V LDO regulation and level-shifting output stage. Its input stage uses matched RGP/RGN resistors (98.38kΩ each for 20× gain) and VCM-sense resistors to enable accurate operation across 4.0–76V common-mode while powered from 4.5–76V supply-fully independent of load voltage.
This architecture enables true single-supply high-side sensing without intermediate rails: the device can operate with VCC = 5V while monitoring a 76V load, eliminating auxiliary supplies and reducing BOM count. Internal grounding of both VREF pins confirms its unidirectional-only operation and distinguishes it from the LMP8481 family variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 20V/V fixed-enables direct scaling of 100mV sense voltage to 2V output, simplifying ADC interface design. |
| Input Offset Voltage | ±80µV max at 25°C-supports use of smaller shunt resistors (e.g., 1mΩ) without compromising low-current measurement accuracy. |
| Common-Mode Range | 4.0V to 76V-allows direct connection to 12V/24V/48V/72V battery or bus rails without level-shifting circuitry. |
| Bandwidth | 270kHz (–3dB)-sufficient for fast transient detection in motor control and DC-DC converter current limiting. |
| Supply Voltage Range | 4.5V to 76V-permits direct tie to monitored rail, eliminating isolated bias supplies and saving board space. |
| Quiescent Current | <100µA-minimizes system power overhead in always-on battery monitoring applications. |
| PSRR / CMRR | 122dB / 124dB (DC)-rejects supply noise and common-mode transients critical in noisy automotive environments. |
Pinout & Package
VSSOP-8 package (3.00mm × 3.00mm body, 0.65mm pitch); thermally enhanced for industrial and automotive ambient conditions up to +125°C junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RSP | Positive current sense input | Connects to high-side of shunt resistor; withstands up to 85V absolute max, supports Kelvin sensing. |
| 2 - VCC | Positive supply voltage | Accepts 4.5–76V; powers internal 14V LDO and amplifier stages-may be tied directly to monitored rail. |
| 3 - NC | No connection | Not internally bonded; must remain floating per datasheet-no external pull-up/down required. |
| 4 - GND | Ground reference | System ground return; minimum 4.0V common-mode above this pin required for valid operation. |
| 5 - VOUT | Voltage output | Buffered rail-to-rail capable output sourcing >5mA; compatible with 100kΩ+ ADC inputs. |
| 6 - NC | No connection (LMP8480 only) | Internally disconnected-distinct from LMP8481's REFB pin; must not be connected. |
| 7 - NC | No connection (LMP8480 only) | Internally disconnected-distinct from LMP8481's REFA pin; must not be connected. |
| 8 - RSN | Negative current sense input | Connects to low-side of shunt; matched impedance with RSP ensures high CMRR performance. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional sensing only | Fixed zero-output baseline at no current-simplifies signal conditioning for battery charge/discharge direction-agnostic monitoring. |
| Internal VREF grounding | Both reference pins tied to GND internally-eliminates need for external reference circuitry and reduces layout complexity vs bidirectional variants. |
| High PSRR/CMRR | 122dB/124dB DC rejection-maintains accuracy in presence of switching regulator ripple and bus transients typical in EV and telecom systems. |
| Wide temperature range | –40°C to +125°C operation-qualified for under-hood automotive and industrial power module deployment without derating. |
| Low quiescent current | <100µA supply draw-enables continuous current logging in battery-backed systems with multi-year runtime. |
Applications
| Automotive Battery Monitoring | Telecom Power Rail Sensing |
|---|---|
Use Scenario: Real-time monitoring of 12V/48V starter battery or 400V traction battery pack current during charge/discharge cycles in ADAS ECUs. IC Role / Device Role / Timing Role: High-side current sense amplifier converting mV-level shunt voltage to scalable analog output for microcontroller ADC sampling. Use Value: Enables precise state-of-charge estimation and overcurrent protection with ±0.1% gain accuracy and <80µV offset-critical for ISO 26262-compliant safety mechanisms. | Use Scenario: Continuous current measurement on +48V DC distribution rails in 5G base station power shelves and remote radio units. IC Role / Device Role / Timing Role: High-common-mode amplifier interfacing with precision shunts to feed telemetry and fault-detection logic. Use Value: Delivers 270kHz bandwidth and 124dB CMRR to reject switching noise from adjacent DC-DC converters-ensuring stable readings under dynamic load conditions. |
| Solar Inverter DC Link Monitoring | Motor Drive Phase Current Feedback |
Use Scenario: Bidirectional current sensing on PV string combiner outputs and inverter DC link capacitors in residential solar inverters. IC Role / Device Role / Timing Role: Unidirectional high-side amplifier measuring DC link current magnitude for MPPT optimization and overcurrent shutdown. Use Value: Operates reliably across 4.0–76V common-mode range-covers full PV open-circuit voltage swing while maintaining sub-100µV offset stability over –40°C to +125°C. | Use Scenario: Phase-leg current feedback in BLDC motor drives for field-oriented control (FOC) in industrial automation and HVAC compressors. IC Role / Device Role / Timing Role: High-bandwidth (270kHz) current sense amplifier feeding analog front-end of motor control MCU. Use Value: 20V/V gain and buffered 5mA output drive ensure clean signal delivery to ADC even with long PCB traces-reducing phase error in torque loop response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4080TASA+ | 20V/V gain, ±100µV offset, 250kHz bandwidth, same VSSOP-8 package-slightly higher offset and lower bandwidth than LMP8480MME-T/NOPB. | Valid for legacy designs requiring drop-in replacement; lacks LMP8480's improved PSRR (122dB vs 110dB) and wider common-mode range (76V vs 70V). | Select when reusing existing MAX4080-based layouts with minimal performance margin requirements. |
| INA240A1D | 20V/V gain, ±20µV offset, 400kHz bandwidth, SOIC-8 package-superior offset and speed but larger footprint and higher quiescent current (1.8mA vs 88µA). | Better suited for high-precision FOC motor control where ultra-low offset dominates over power budget; requires PCB redesign due to SOIC-8 vs VSSOP-8. | Select when lowest possible offset and fastest response are mandatory, and board space/power constraints permit SOIC-8 adoption. |
Compared with MAX4080TASA+, LMP8480MME-T/NOPB offers tighter gain accuracy and higher common-mode tolerance; compared with INA240A1D, it trades ultra-low offset for significantly lower quiescent current and smaller VSSOP-8 footprint-making it optimal for space- and power-constrained automotive and telecom modules.
Availability
LMP8480MME-T/NOPB is available at Aetrix Electronics and suitable for automotive battery management, telecom power telemetry, and solar inverter DC-link monitoring requiring stable component supply across extended temperature and voltage ranges.
Supply support for LMP8480MME-T/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions, with over 90 years of innovation in precision signal chain components.
The LMP8480MME-T/NOPB belongs to TI's LMP848x precision current sense amplifier family-engineered specifically for high-reliability, high-common-mode-voltage applications in automotive, industrial, and communications infrastructure where accuracy, thermal stability, and supply flexibility are critical.
FAQ
What is the maximum common-mode voltage supported by the LMP8480MME-T/NOPB?
The LMP8480MME-T/NOPB supports a common-mode input voltage range of 4.0V to 76V. This allows direct connection to high-voltage rails such as 48V telecom systems or 72V battery packs without attenuation or level-shifting circuitry. Absolute maximum rating is 85V, but operation beyond 76V violates recommended conditions and risks parametric shift.
Does the LMP8480MME-T/NOPB support bidirectional current sensing?
No, the LMP8480MME-T/NOPB is strictly unidirectional. Its internal VREF pins are grounded, fixing the output baseline at zero volts when no current flows. For bidirectional operation, the LMP8481 variant must be used-where external reference voltages applied to REFA/REFB set the output midpoint.
What is the gain accuracy specification for the LMP8480MME-T/NOPB over temperature?
The LMP8480MME-T/NOPB has a gain error of ±0.6% at TA = 25°C and ±0.8% over the full operating temperature range of –40°C to +125°C. This is confirmed in Section 6.5 of the datasheet under "Gain error" test conditions with VCC = VRSP = 48V.
Can the LMP8480MME-T/NOPB be powered from the same rail it monitors?
Yes-the LMP8480MME-T/NOPB accepts supply voltages from 4.5V to 76V, fully overlapping its 4.0–76V common-mode input range. It can therefore be powered directly from the monitored rail (e.g., 48V bus), eliminating the need for auxiliary supplies and reducing system component count and board area.
What is the thermal resistance (RθJA) of the LMP8480MME-T/NOPB in its VSSOP-8 package?
The junction-to-ambient thermal resistance (RθJA) for the LMP8480MME-T/NOPB in DGK (VSSOP-8) package is 185°C/W, as specified in Section 6.4 of the datasheet. This value assumes standard JEDEC 2-layer board conditions and informs thermal derating calculations for continuous operation at elevated ambient temperatures.
LMP8480MME-T/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 270 kHz
- Current - Input Bias:
- 6.3 µA
- Voltage - Input Offset:
- 80 µV
- Current - Supply:
- 88µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 76 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
LMP8480MME-T/NOPB FAQ
1.How can I place an order for LMP8480MME-T/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP8480MME-T/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LMP8480MME-T/NOPB reliable?
The price and inventory of LMP8480MME-T/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP8480MME-T/NOPB is usually 5 days.
3.What payment methods are accepted for LMP8480MME-T/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP8480MME-T/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP8480MME-T/NOPB?
LMP8480MME-T/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP8480MME-T/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LMP8480MME-T/NOPB?
For technical support, including LMP8480MME-T/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP8480MME-T/NOPB requirements.
6.How does Aetrix verify that LMP8480MME-T/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP8480MME-T/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LMP8480MME-T/NOPB meets industry standards.
7.What is the process for return or replacement of LMP8480MME-T/NOPB?
All LMP8480MME-T/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP8480MME-T/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LMP8480MME-T/NOPB part is unused and in its original packaging.
Return procedure for LMP8480MME-T/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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