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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Monolithic Power Systems Inc. MP8110DS-LF-P

Name: MP8110DS-LF-P
Brand: Monolithic Power Systems Inc.
SKU: MP8110DS-LF-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP8110DS-LF-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: MP8110DS-LF-P.pdf

Description:: 40V PRECISION HIGH-SIDE CURRENT

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Product details

Overview

MP8110DS-LF-P from Monolithic Power Systems is a precision high-side current-sense amplifier operating from 2.5V to 40V supply, featuring 1.4V–40V input common-mode range independent of V_CC, 400µV typical input offset voltage, and dual buffered outputs (OUT1 for resistive loads, OUT2 for capacitive loads). It enables accurate battery discharge monitoring in portable systems with deep-battery operation down to 1.4V.

For engineers reviewing the MP8110DS-LF-P datasheet, MP8110DS-LF-P pinout, MP8110DS-LF-P application, or MP8110DS-LF-P equivalent, key selection criteria include its wide common-mode range enabling 2-cell Li-ion deep-discharge sensing, ultra-low 12µA quiescent current, dual-output architecture for mixed load types, and SOIC-8 RoHS-compliant packaging.

Technical Context

The MP8110 implements a precision current-sense architecture using an internal P-channel MOSFET and feedback-controlled gate drive to replicate sensed current across external gain resistors RG1/RG2. Its differential input stage maintains accuracy across 1.4V–40V common-mode while rejecting supply variations via 97dB PSRR.

It provides two independent output paths: OUT1 delivers up to 500µA into resistive loads with ±2% current accuracy at 100mV sense voltage, while OUT2 supplies up to 5mA for capacitive loads with separate offset and dynamic response (t_R/t_F = 17–29µs), supporting simultaneous analog monitoring and fast transient detection.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	2.5V to 40V - supports direct connection to 12V/24V industrial rails and multi-cell Li-ion batteries without level-shifting.
Input Common-Mode Range	1.4V to 40V - enables current sensing during deep battery discharge (e.g., 2-cell pack at 1.4V/cell) without ground-path interference.
Supply Current	12µA typical - minimizes parasitic drain in always-on battery monitoring applications like smart battery packs.
Input Offset Voltage	400µV typical - ensures <±0.5% error at 100mV sense voltage, critical for low-current precision measurement.
Shutdown Current	3µA typical - allows system-level power gating while retaining fast wake-up capability (<100µs transient response).
PSRR	97dB - rejects supply ripple and noise, maintaining stable output under noisy DC-DC converter inputs.
Output Drive Capability	OUT1: 500µA / OUT2: 5mA - permits direct interface to ADC inputs (OUT1) and active filters or comparators (OUT2).

Pinout & Package

MP8110DS-LF-P is housed in an 8-pin SOIC package (JEDEC MS-012 AA), with exposed pad not present. Pin functions are validated per Monolithic Power Systems' Rev. 0.9 datasheet.

Pin/Terminal	Circuit Role	Design Meaning
1 SHDN	Active-low shutdown control	Pull to GND for normal operation; drives ICC(SHDN) ≤ 6µA when high, enabling system-level power management.
2 NC	No-connect terminal	Internally unconnected; must remain floating or grounded per layout guidelines to avoid coupling noise.
3 RG1	Gain resistor input (battery side)	Connects to high-side of sense resistor RS; sets current gain with RG2 as R_GS/R_G1.
4 GND	Ground reference	Serves as battery negative return path; decoupling capacitor (0.1µF) required between VCC and GND.
5 OUT1	Resistive-load output	Low-impedance buffer optimized for ADC input or op-amp stages; limited to 500µA sink/source.
6 RG2	Gain resistor input (load side)	Completes differential sense path; matched with RG1 to define gain and reject common-mode errors.
7 VCC	Power supply input	Accepts 2.5V–40V; powers internal amplifier and buffers; requires local 10µF + 0.1µF bypassing.
8 OUT2	Capacitive-load output	Higher-drive buffer for RC filters or comparator inputs; supports 5mA and faster edge rates than OUT1.

Key Features

Feature	Design Value
Dual-output architecture	Separate OUT1 (precision, low-current) and OUT2 (high-drive, fast-response) outputs enable concurrent analog-to-digital conversion and real-time overcurrent protection.
Supply-independent common-mode range	1.4V–40V operation regardless of VCC allows use with partially discharged 2-cell Li-ion (≤2.8V total) while maintaining full sensing functionality.
Ultra-low quiescent current	12µA typical ICC ensures <1.2µAh/day drain on a 100mAh battery, extending shelf life in energy-constrained portable devices.
Integrated gain-setting flexibility	External RG1/RG2 resistors allow programmable gain from 1× to 10× (per Table 1), supporting 0.1A–10A full-scale current ranges with standard sense resistors.
Robust shutdown interface	SHDN threshold of 0.7–1.2V with 30mV hysteresis prevents false toggling in noisy environments and supports direct GPIO control from 1.8V/3.3V microcontrollers.

Applications

Smart Battery Packs

Portable Test Equipment

Use Scenario: Real-time cell current monitoring during charge/discharge cycles in multi-cell Li-ion battery packs with embedded fuel gauges.

IC Role / Device Role / Timing Role: High-side current-sense amplifier providing isolated, ground-referenced current feedback to battery management ICs without disrupting charger ground return.

Use Value: Enables accurate coulomb counting down to 1.4V per cell, supporting state-of-charge estimation even in deep-discharge recovery mode.

Use Scenario: Precision current sourcing and load characterization in handheld multimeters and portable power analyzers.

IC Role / Device Role / Timing Role: Dual-output current monitor delivering calibrated analog output (OUT1) to ADC and fast transient signal (OUT2) to comparator for overcurrent flagging.

Use Value: Simultaneous high-accuracy measurement (±2% gain error) and sub-30µs fault response meet Class II portable instrument requirements.

Energy Management Systems

Cell Phones

Use Scenario: System-level power budgeting and dynamic load profiling in IoT gateways and edge controllers with multiple DC-powered subsystems.

IC Role / Device Role / Timing Role: High-voltage current sensor interfacing to 24V/40V industrial rails, feeding data to MCU via low-power OUT1 while triggering hardware interrupts via OUT2.

Use Value: Wide 2.5V–40V supply range eliminates need for auxiliary LDOs; 12µA ICC reduces standby power by >90% vs. legacy solutions.

Use Scenario: Battery current telemetry during fast charging and RF transmission bursts in LTE/5G smartphones.

IC Role / Device Role / Timing Role: High-side monitor placed between battery and PMIC, delivering real-time current data to baseband processor while surviving 40V surge transients.

Use Value: 40V absolute max rating and 97dB PSRR ensure reliable operation during USB PD fast-charge events with noisy switching waveforms.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side current-sense amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
INA240A1IDR	Single-output, 80V supply rating, 50µV offset, 2.1mA ICC	Higher voltage tolerance but 175× higher quiescent current; no dual-output capability	Select for 48V industrial systems requiring ultra-low offset; avoid where <15µA ICC is mandatory.
MAX40056ATA+T	Single-output, 65V supply, 125µV offset, 100µA ICC, integrated 10kΩ gain resistor	Fixed-gain architecture limits flexibility; higher ICC reduces battery life in always-on monitoring	Choose for simplified BOM in cost-sensitive designs where 10× gain suffices and 100µA ICC is acceptable.

Compared with INA240A1IDR and MAX40056ATA+T, MP8110DS-LF-P uniquely balances ultra-low ICC (12µA), dual-output drive, and 1.4V–40V common-mode range-making it optimal for battery-powered systems needing both precision and low-power longevity.

Availability

MP8110DS-LF-P is available at Aetrix Electronics and suitable for portable PCs, smart battery packs, and energy management systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP8110DS-LF-P 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

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with design centers in the US, China, and Taiwan.

The MP8110 belongs to MPS's precision current-sense amplifier product line, engineered specifically for high-side battery monitoring in space-constrained, low-power portable electronics where ground-path integrity and deep-discharge operation are critical.

FAQ

What is the minimum input common-mode voltage supported by MP8110DS-LF-P?

The MP8110DS-LF-P supports an input common-mode voltage as low as 1.4V, independent of supply voltage. This allows accurate current sensing even when a 2-cell Li-ion battery discharges to 1.4V per cell (2.8V total), ensuring uninterrupted fuel gauge operation during deep discharge recovery.

Can MP8110DS-LF-P be used with a 48V supply rail?

No-MP8110DS-LF-P has an absolute maximum VCC rating of +42V and operating supply range of 2.5V to 40V. Applying 48V exceeds its absolute maximum ratings and risks permanent damage. For 48V systems, consider alternatives such as the INA240 (80V-rated) with appropriate derating and layout precautions.

How does the dual-output architecture improve system design?

OUT1 provides low-noise, precision current output (≤500µA) ideal for high-resolution ADC sampling, while OUT2 delivers higher current (5mA) and faster edges (17–29µs) for driving comparators or active filters. This eliminates need for external op-amps or buffers, reducing board area and component count in compact portable designs.

Is the NC pin (Pin 2) required to be left floating?

Yes-Pin 2 is internally unconnected and must remain electrically floating. Grounding or routing signals to this pin may introduce leakage paths or noise coupling. PCB layout should omit copper connection and avoid placing vias or traces beneath this pad in SOIC-8 footprint.

What is the recommended gain-setting resistor value for 5A full-scale sensing?

For 5A full-scale current with 100mV sense voltage, use RS = 20mΩ. With RG1 = RG2 = 2kΩ and RGS = 20kΩ (per Table 1), gain = 10×, yielding VOUT1 = 1.0V at 5A. This configuration achieves ±2% current accuracy and keeps VOUT1 within 0.15V below VCC per datasheet output swing specification.

Does MP8110DS-LF-P require external compensation components?

Yes-stable operation requires external CGS (100pF) between RG1 and RG2, plus COUT (100pF) on OUT1/OUT2 per typical application circuit. These capacitors suppress high-frequency oscillation caused by parasitic inductance in gain resistor traces and ensure phase margin >45° across temperature and supply variations.

How does shutdown mode affect output behavior?

When SHDN is pulled high (>0.9V), internal amplifiers disable and both OUT1 and OUT2 enter high-impedance state-no current sourcing or sinking occurs. Output voltages float near mid-rail if externally pulled; designers must add weak pull-downs if defined logic levels are required during shutdown.

MP8110DS-LF-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: MP

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: Current Sense

Number of Circuits:: 2

Output Type:: Open Drain

Slew Rate:: -

Gain Bandwidth Product:: -

-3db Bandwidth:: -

Current - Input Bias:: 4 nA

Voltage - Input Offset:: 1 mV

Current - Supply:: 12µA

Current - Output / Channel:: 5 mA

Voltage - Supply Span (Min):: 2.5 V

Voltage - Supply Span (Max):: 40 V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

MP8110DS-LF-P FAQ

1.How can I place an order for MP8110DS-LF-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MP8110DS-LF-P 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 MP8110DS-LF-P reliable?

The price and inventory of MP8110DS-LF-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP8110DS-LF-P is usually 5 days.

3.What payment methods are accepted for MP8110DS-LF-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8110DS-LF-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP8110DS-LF-P?

MP8110DS-LF-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP8110DS-LF-P 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 MP8110DS-LF-P?

For technical support, including MP8110DS-LF-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8110DS-LF-P requirements.

6.How does Aetrix verify that MP8110DS-LF-P is sourced from the original manufacturer or authorized distributors?

All MP8110DS-LF-P 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 MP8110DS-LF-P meets industry standards.

7.What is the process for return or replacement of MP8110DS-LF-P?

All MP8110DS-LF-P units undergo pre-shipment inspection (PSI). If there is an issue with MP8110DS-LF-P, 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 MP8110DS-LF-P part is unused and in its original packaging.

Return procedure for MP8110DS-LF-P:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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