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Texas Instruments LMP8480MME-S/NOPB
- Part No.:
- LMP8480MME-S/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMP8480MME-S/NOPB.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:11,207
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Product details
Overview
LMP8480MME-S/NOPB from Texas Instruments is a unidirectional high-side current sense amplifier with fixed 60V/V gain, 4.0V–76V common-mode input range, ±80µV offset, 270kHz bandwidth, and VSSOP-8 package. It enables precise load-current monitoring in automotive battery management, telecom power supplies, and industrial motor drives where supply voltage matches monitored rail.
For engineers reviewing the LMP8480MME-S/NOPB datasheet, LMP8480MME-S/NOPB pinout, LMP8480MME-S/NOPB application, or LMP8480MME-S/NOPB equivalent, key selection criteria include gain accuracy (±0.6% at 25°C), output drive capability (>5mA), PSRR (122dB), CMRR (124dB), and compatibility with 4.5V–76V single-supply operation without auxiliary rails.
Technical Context
The LMP8480MME-S/NOPB implements a two-stage architecture: first, a precision thin-film resistor-based voltage-to-current converter converts differential sense voltage (VSENSE) into imbalanced currents; second, a differential amplifier with internal 14V LDO and level-shifting output stage delivers buffered voltage output. Its supply and common-mode ranges are fully independent-enabling operation with VCC = 5V while monitoring a 76V rail.
Unlike the bidirectional LMP8481, the LMP8480MME-S/NOPB internally grounds both reference pins (REFA/REFB), yielding ground-referenced output (0V at zero current) and eliminating external biasing components. This simplifies unidirectional sensing in overcurrent protection and energy metering where polarity reversal is irrelevant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 60V/V fixed-enables direct scaling of 16.7mV full-scale sense voltage to 1V output for ADC interfacing. |
| Input Offset Voltage | ±80µV max at 25°C-supports use of smaller, lower-power shunt resistors without compromising low-current accuracy. |
| Common-Mode Range | 4.0V to 76V-allows direct connection to high-voltage bus rails without level-shifting circuitry. |
| Bandwidth | 270kHz (–3dB)-sufficient for real-time monitoring of PWM-driven motor currents and telecom DC-DC transient response. |
| Supply Voltage | 4.5V to 76V-permits single-supply operation from same rail being monitored, reducing BOM count and PCB area. |
| Output Drive | >5mA sourcing/sinking-drives 10kΩ ADC inputs or long traces without external buffers. |
| PSRR / CMRR | 122dB / 124dB (DC)-rejects supply noise and common-mode transients in noisy automotive/industrial environments. |
Pinout & Package
Package: VSSOP-8 (3.00mm × 3.00mm), thermally enhanced for high-voltage industrial and automotive applications.
| 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. |
| 2 - VCC | Positive supply voltage | Accepts 4.5V–76V; powers internal 14V LDO and amplifier stages. |
| 3 - NC | No connection | Not internally connected; must remain floating or grounded per layout guidelines. |
| 4 - GND | Ground reference | Return path for supply and output; requires low-impedance Kelvin connection to shunt. |
| 5 - VOUT | Voltage output | Buffered, rail-to-rail capable output delivering 60×(VRSP–VRSN) referenced to GND. |
| 6 - NC | No connection (LMP8480) | Internally disconnected; not REFB-LMP8481 only uses this pin. |
| 7 - NC | No connection (LMP8480) | Internally disconnected; not REFA-LMP8481 only uses this pin. |
| 8 - RSN | Negative current sense input | Connects to low-side of shunt; common-mode voltage must stay ≥4.0V above GND. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional sensing architecture | Eliminates need for external reference biasing, reducing component count and layout complexity vs bidirectional variants. |
| Integrated 14V LDO | Stabilizes internal analog core across wide VCC range, ensuring consistent offset and gain performance from 4.5V to 76V. |
| High PSRR/CMRR | 122dB/124dB rejection enables accurate current measurement in presence of switching noise on 48V telecom or 12V automotive rails. |
| Low quiescent current | <100µA typical-suitable for always-on battery monitoring circuits without significant standby drain. |
| Thermal robustness | Rated for –40°C to +125°C operation with 185°C/W junction-to-ambient thermal resistance-validated for under-hood automotive use. |
Applications
| Automotive Battery Monitoring | Telecom DC-DC Power Supply |
|---|---|
Use Scenario: Real-time monitoring of 12V/48V battery charge/discharge current in start-stop systems and EV auxiliary power units. IC Role / Device Role / Timing Role: High-side current sense amplifier converting shunt voltage to proportional analog output for MCU ADC sampling. Use Value: ±0.6% gain error and ±80µV offset enable <1% total current measurement error across –40°C to 125°C, critical for state-of-charge estimation. | Use Scenario: Output current sensing in isolated 48V telecom rectifiers and intermediate bus converters. IC Role / Device Role / Timing Role: Unidirectional current monitor interfaced to digital power controller for overcurrent protection and load balancing. Use Value: 270kHz bandwidth captures fast load transients; 76V common-mode range supports direct connection to primary-side high-voltage rails. |
| Industrial Motor Drive Protection | Solar Panel String Monitoring |
Use Scenario: Phase current sensing in BLDC motor inverters for torque control and fault detection. IC Role / Device Role / Timing Role: High-side sense amplifier feeding analog feedback loop of motor control IC or isolated gate driver. Use Value: >5mA output drive ensures signal integrity over 10cm PCB traces to controller; 124dB CMRR rejects PWM-induced common-mode noise. | Use Scenario: Per-string current monitoring in photovoltaic combiner boxes to detect shading or panel failure. IC Role / Device Role / Timing Role: Precision current sensor converting shunt voltage to scalable analog output for string-level data acquisition. Use Value: 4.0V–76V common-mode range accommodates variable PV string voltages; ±900µV max offset drift over temperature ensures long-term calibration stability. |
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 |
|---|---|---|---|
| MAX4080ASA+T | 60V/V gain, ±200µV offset, 250kHz bandwidth, SO-8 package; lacks internal LDO and has lower PSRR (110dB). | Requires external 5V supply; less suitable for direct 48V rail monitoring due to narrower common-mode range (76V but higher offset drift). | Choose when legacy MAX4080 footprint compatibility is required and supply rail isolation is acceptable. |
| INA240A1QDRQ1 | 80V common-mode, ±100µV offset, 400kHz bandwidth, SO-8; AEC-Q100 qualified, but fixed 20V/V gain only. | Automotive-qualified; requires external gain stage for 60× scaling; higher bandwidth trades off some DC precision. | Prefer for new automotive designs requiring AEC-Q100 certification, accepting gain reconfiguration. |
Compared with MAX4080ASA+T and INA240A1QDRQ1, the LMP8480MME-S/NOPB offers superior DC accuracy (±80µV vs ±200µV/±100µV), integrated LDO for single-rail operation, and optimal 60V/V gain for 16.7mV–1V scaling-making it ideal for cost-sensitive industrial and telecom systems demanding high precision without qualification overhead.
Availability
LMP8480MME-S/NOPB is available at Aetrix Electronics and suitable for automotive battery management, telecom power supplies, and industrial motor drives requiring stable component supply and guaranteed long-term manufacturability.
Supply support for LMP8480MME-S/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 specializing in analog and embedded processing technologies, with decades of expertise in precision amplifiers and power management ICs.
The LMP8480MME-S/NOPB belongs to TI's LMP848x precision high-side current sense amplifier family, designed specifically for accurate, single-supply current monitoring in automotive, industrial, and telecom systems operating up to 76V.
FAQ
What is the maximum common-mode voltage the LMP8480MME-S/NOPB can handle?
The LMP8480MME-S/NOPB supports a common-mode input voltage range of 4.0V to 76V. Absolute maximum rating is 85V on RSP or RSN pins relative to GND. Operation below 4.0V may result in invalid output due to internal circuit limitations-this makes it unsuitable for low-side sensing or sub-4V rail monitoring.
Does the LMP8480MME-S/NOPB require an external reference voltage?
No. The LMP8480MME-S/NOPB internally grounds both reference pins (REFA and REFB), resulting in a ground-referenced output (0V at zero current). This eliminates external biasing components and simplifies unidirectional current sensing-unlike the LMP8481, which requires external reference configuration for bidirectional operation.
What is the gain accuracy of the LMP8480MME-S/NOPB over temperature?
The LMP8480MME-S/NOPB has a gain error of ±0.8% over the full operating temperature range (–40°C to +125°C), with ±0.6% typical at 25°C. This is achieved via laser-trimmed thin-film resistors and stable internal architecture-ensuring reliable scaling of shunt voltage to output across automotive and industrial thermal environments.
Can the LMP8480MME-S/NOPB be powered from the same rail it monitors?
Yes. The LMP8480MME-S/NOPB accepts supply voltages from 4.5V to 76V, fully overlapping its 4.0V–76V common-mode input range. This allows direct powering from the monitored rail-e.g., using a 48V bus to power both load and LMP8480MME-S/NOPB-eliminating auxiliary supplies and reducing system cost and board space.
What package type and thermal characteristics does the LMP8480MME-S/NOPB have?
The LMP8480MME-S/NOPB uses an 8-pin VSSOP package (3.00mm × 3.00mm) with a junction-to-ambient thermal resistance (RθJA) of 185°C/W. Its –40°C to +125°C operating range and thermally optimized layout make it suitable for under-hood automotive, industrial control cabinets, and telecom equipment where ambient temperatures exceed 85°C.
LMP8480MME-S/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-S/NOPB FAQ
1.How can I place an order for LMP8480MME-S/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP8480MME-S/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-S/NOPB reliable?
The price and inventory of LMP8480MME-S/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-S/NOPB is usually 5 days.
3.What payment methods are accepted for LMP8480MME-S/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP8480MME-S/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP8480MME-S/NOPB?
LMP8480MME-S/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP8480MME-S/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-S/NOPB?
For technical support, including LMP8480MME-S/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP8480MME-S/NOPB requirements.
6.How does Aetrix verify that LMP8480MME-S/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP8480MME-S/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-S/NOPB meets industry standards.
7.What is the process for return or replacement of LMP8480MME-S/NOPB?
All LMP8480MME-S/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP8480MME-S/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-S/NOPB part is unused and in its original packaging.
Return procedure for LMP8480MME-S/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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