MP8110DK-LF - 40V High-Side Current-Sense Amplifier | MPS
MPN: MP8110DK-LF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.8 | $2.80 |
| 10 | $2.8 | $28.00 |
| 100 | $2.8 | $280.00 |
| 500 | $2.8 | $1,400.00 |
| 1,000 | $2.8 | $2,800.00 |
MP8110DK-LF Overview
A current-sense amplifier is an analog signal-conditioning device that measures the voltage drop across a small sense resistor and produces an output proportional to the current flowing through that resistor. The MP8110 family belongs to the precision analog and current-measurement hierarchy, supporting high-side current sensing, power-system monitoring, battery management, load detection, and overcurrent protection. Its low supply current helps preserve battery life in portable systems.
The manufacturer describes the MP8110 as operating from 2.5V to 40V and typically consuming 12 µA. The device output is proportional to load current, and the MP8110 evaluation-board information states that 1V output corresponds to 5A of load current. This relationship depends on the selected sense resistor and device gain; the exact gain, common-mode range, accuracy, and electrical limits should be confirmed in the manufacturer datasheet before final design release.
High-side current sensing places the sense resistor in the positive supply conductor, so the amplifier can monitor current without disconnecting the load or placing a high-side transistor in the power path. This is useful in battery-powered equipment where the ground connection must remain common with the monitored system. The approach can also simplify power-path protection because the load remains connected during measurement.
The MP8110 is suitable for notebook computers, cell phones, battery-operated instruments, industrial control systems, power adapters, and other DC rails where current monitoring is valuable. In these applications, the amplifier output can be connected to an analog-to-digital converter, comparator, microcontroller input, or system controller for current reporting, load detection, and protection. The 40V supply capability is useful for systems whose monitored rail is above conventional low-voltage logic levels.
Designers should verify the sense-resistor value, Kelvin routing, amplifier gain, output swing, supply decoupling, and input common-mode limits against the specific MP8110 ordering code and datasheet. Keep the sense-resistor connections short and symmetrical to reduce parasitic resistance and measurement error. Place the amplifier and filtering components close to the sense resistor, and provide stable supply bypassing where required by the application.
This page summarizes the verified manufacturer and distributor information for MP8110DK-LF and distinguishes confirmed specifications from parameters that require datasheet confirmation. It also provides application guidance and procurement context for engineers comparing high-side current-sense amplifier options.
Drop-in alternatives for MP8110DK-LF — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MP8110DK-LF-P
✅ Drop-In📋 Reference alternative (not in catalog)
MP8110DK-LF-Z
✅ Drop-In📋 Reference alternative (not in catalog)
MP8110DK-LF Maximum Ratings & Electrical Characteristics
| Device Type | Precision high-side current-sense amplifier |
| Number of Channels | 1 channel |
| Supply Voltage Range | 2.5 V to 40 V |
| Typical Supply Current | 12 µA |
| Manufacturer Product Page Supply Current | 17 µA |
| Output Relationship | 1 V output corresponds to 5 A load current on the EV8110DS-00A evaluation board |
| Current-Sense Method | High-side current sensing |
| Output Type | Analog proportional output |
| Package | 8-MSOP |
| Package Width | 3.00 mm |
| Mounting Type | Surface mount |
| Application Category | Battery and DC current monitoring |
| Notebook Computer Support | Intended application |
| Cell Phone Support | Intended application |
| Battery-Powered System Suitability | High-side monitoring without disconnecting the load |
| Evaluation Board | EV8110DS-00A |
| Lifecycle Status | Active |
| RoHS Status | Not stated in verified data |
| REACH Status | Not stated in verified data |
| AEC-Q100 Qualification | Not stated in verified data |
MP8110DK-LF 3.00 mm Pin Configuration Guide
Pin configuration for MP8110DK-LF (3.00 mm package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for MP8110DK-LF.
Refer to the datasheet for full pin configuration.
Typical Applications
MP8110DK-LF is suitable for 6 applications: Notebook Battery-Current Monitoring, Cell Phone and Portable Device Load Detection, DC Power-Supply Output Monitoring, Industrial Load and Power-Path Monitoring, Battery Charger and Adapter Monitoring, USB-C and External Power-Path Current Reporting.
Notebook Battery-Current Monitoring
The MP8110DK-LF fits notebook battery systems that need a proportional measurement of DC load current without interrupting the positive power path. Its high-side current-sense architecture keeps the monitored rail connected to the load and allows the output to be read by a controller or analog-to-digital converter. The verified 2.5V to 40V supply range supports a broader class of system rails than low-voltage-only sensing devices. Because the MP8110 is specified as a low-cost, precision current-sense amplifier for notebook applications, designers can use it for battery reporting, power-budget monitoring, and load-state detection. The final sense-resistor value and ADC scaling should be calculated from the confirmed datasheet gain.
Recommended
Cell Phone and Portable Device Load Detection
The MP8110DK-LF is appropriate for battery-operated devices that need to distinguish operating, charging, accessory, or peripheral load conditions. High-side sensing avoids inserting a current-measurement element into the ground return, which helps preserve the system’s common-ground relationships. The manufacturer specifically identifies cell phones as an intended application and describes the device as useful where battery current monitoring is critical. Its low-power nature is valuable in portable systems, although the verified data contains both 12 µA and 17 µA typical-current statements. Designers should confirm the correct test conditions and use the selected value in battery-life calculations.
Recommended
DC Power-Supply Output Monitoring
The MP8110DK-LF can monitor current delivered by a DC supply when the return path must remain common with the controller. The 2.5V to 40V operating range makes the device applicable to industrial and communications rails above low logic voltage, while the proportional analog output supports supervisory functions. A system designer can compare the sensed current against a software threshold or feed it into an ADC for continuous telemetry. The MP8110 does not interrupt the load path, which helps preserve system operation during measurement. Sense-resistor tolerance, amplifier accuracy, trace resistance, and output loading should be included in the error budget before using measurements for protection decisions.
Recommended
Industrial Load and Power-Path Monitoring
The MP8110DK-LF is suitable for industrial equipment that must report the current drawn from a positive DC rail while maintaining a common system ground. High-side sensing can support actuator monitoring, motor-driver diagnostics, and protection decisions without placing the amplifier in the high-current return conductor. The verified 40V upper supply rating is useful for 24V-class systems when the downstream control electronics and protection architecture are appropriately designed. To obtain useful measurement accuracy, place the sense resistor close to the amplifier inputs, use paired traces where practical, and account for copper and connector resistance. The output should be filtered according to the required bandwidth and ADC sampling rate.
Recommended
Battery Charger and Adapter Monitoring
The MP8110DK-LF can measure current in a high-side battery or adapter path when the system needs to distinguish charging current from system load. The monitor’s output is proportional to load current, allowing a controller to implement current reporting, adapter-current limiting, or fault detection. The broad 2.5V to 40V supply range supports varied adapter and battery-system voltages, while high-side placement helps avoid disrupting return-current paths. A complete charger design must also account for the sense-resistor power rating, Kelvin connections, amplifier output range, and transient response. The verified manufacturer information supports battery and DC monitoring use, but charger-specific thresholds and protection settings should be validated in system testing.
Recommended
USB-C and External Power-Path Current Reporting
The MP8110DK-LF can be used in systems that need to monitor current delivered through an external power adapter or USB power-management path. Its high-side sensing method allows current measurement without switching the system ground, which can simplify integration around protected power paths and shared buses. The amplifier output can feed an ADC, comparator, or microcontroller for current reporting and fault detection. The design must verify that the monitored voltage and current remain within the MP8110’s confirmed operating limits, and that the external power-path switching element has adequate transient protection. A sense resistor placed at the amplifier input should be laid out carefully to minimize added resistance and thermal noise.
Recommended
Recommended Products Summary
Engineering reference data for MP8110DK-LF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MP8110DK-LF-P | MP8110DK-LF-Z |
|---|---|---|---|
| Brand | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems |
| Package | 8-MSOP | 8-MSOP | 8-MSOP |
| Device Type | Precision high-side current-sense amplifier | Current-sense amplifier | Current-sense amplifier |
| Number of Channels | 1 channel | 1 circuit | 1 circuit |
| Supply Voltage Range | 2.5 V to 40 V | 2.5 V to 40 V | 2.5 V to 40 V |
| Typical Supply Current | 12 µA in the datasheet result; 17 µA in the product-page result | Not stated in verified search data | Not stated in verified search data |
| Current-Sense Configuration | High-side | High-side family variant | High-side family variant |
| Output Relationship | Proportional to load current; EV8110DS-00A states 1 V corresponds to 5 A | Not stated in verified search data | Not stated in verified search data |
| Application | Battery and DC current monitoring | Current-sense amplifier | Current-sense amplifier |
| Price Reference | $2.80 reference price in verified supplied data | $2.80 starting unit price from a verified distributor result | Not stated in verified search data |
Key Differentiators
- Wide monitored supply range (vs MP8110DK-LF-P)
- Manufacturer-defined high-side monitoring use case (vs MP8110DK-LF-Z)
- Low-power portable-system orientation (vs MP8110DK-LF-P)
Design Notes
Use the MP8110 only after checking the monitored rail against the verified 2.5V to 40V supply specification and the complete datasheet common-mode limits. Place a stable supply bypass capacitor near the device power pins and keep the current-sense path separate from noisy switching nodes. Because the manufacturer data contains both 12 µA and 17 µA typical-current statements, use the value applicable to the selected datasheet revision for battery-budget calculations.
Route the sense-resistor connections as a compact Kelvin pair where the PCB design allows it. The two amplifier inputs should connect directly to the intended sense-resistor terminals without sharing resistance with unrelated current paths. Minimize trace length between the resistor and the MP8110, remove solder residue and contamination from the connection, and place input filtering close to the device. These steps reduce parasitic resistance and improve the repeatability of current measurements.
Do not select MP8110DK-LF-P or MP8110DK-LF-Z solely because the package name matches. The supplied search results identify both as 8-MSOP variants, but do not establish identical gain, accuracy, common-mode limits, pinout, qualification, or lifecycle terms. Before approving either variant as a replacement, compare the manufacturer datasheets and confirm the physical pin mapping, output scaling, temperature range, and supply restrictions.
Compliance Information
The supplied verified manufacturer and distributor snippets do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Obtain the current manufacturer product documentation or distributor compliance record before making a compliance claim.
