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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Management - Specialized

Analog Devices Inc. LT6110IDC#TRMPBF

Name: LT6110IDC#TRMPBF
Brand: Analog Devices Inc.
SKU: LT6110IDC#TRMPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LT6110IDC#TRMPBF

Manufacturer:: Analog Devices Inc.

Category:: Power Management - Specialized

Package:: 8-WFDFN Exposed Pad

Datasheet:: LT6110IDC#TRMPBF.pdf

Description:: IC WIRE DROP COMPENSATOR

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Product details

Overview

LT6110IDC#TRMPBF from Analog Devices (formerly Linear Technology) is a precision high-side current sense amplifier with dual current-mode outputs (sinking IOUT and sourcing IMON), designed specifically for remote load voltage drop compensation in adjustable regulators. It features an integrated 20 mΩ sense resistor (rated for 3 A continuous), ≤300 µV input offset voltage, 1% max output current accuracy, and operates from 2 V to 50 V supply. It is used in USB power adapters and PoE-powered devices to maintain ±1.1% load regulation despite wire resistance.

For engineers reviewing the LT6110IDC#TRMPBF datasheet, LT6110IDC#TRMPBF pinout, LT6110IDC#TRMPBF application, or LT6110IDC#TRMPBF equivalent, key selection criteria include its dual-output current-mode interface, internal vs. external sense resistor flexibility, gain configurability via R_IN, low quiescent current (≤30 µA), and guaranteed operation from –40°C to +85°C in the DFN package.

Technical Context

The LT6110IDC#TRMPBF implements a precision current-sense amplifier with a forced-feedback architecture: the internal op-amp drives +IN to match –IN potential, enabling accurate V_SENSE measurement across R_SENSE. Its two mirrored current outputs - IOUT (1× V_SENSE/R_IN) and IMON (3× V_SENSE/R_IN) - provide regulator-compatible control signals without voltage-level translation.

It supports both internal (20 mΩ, 3 A) and external sense resistors, with full specification over –40°C to +85°C. The device uses bipolar transistor output stages, requiring attention to IOUT–IMON differential voltage limits (–0.6 V to +36 V) and V+–IOUT voltage constraints (≤36 V) to avoid breakdown.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2 V to 50 V - enables direct integration into 5 V, 12 V, 24 V, and 48 V systems including PoE and industrial DC rails.
Input Offset Voltage (max)	300 µV - allows use of small-value sense resistors (e.g., 10 mΩ) while maintaining <1% error at 100 mA load current.
IOUT/IMON Accuracy (max)	1% - ensures predictable compensation voltage generation when driving feedback resistors of adjustable regulators like LT3080 or LT1083.
Supply Current (max)	30 µA at 5 V - minimizes impact on light-load efficiency in battery- or energy-harvesting powered systems.
Signal Bandwidth	180 kHz - provides fast transient response to load steps, supporting stable closed-loop compensation in DC/DC converters with >10 kHz switching frequencies.
Operating Temperature	–40°C to +85°C - qualified for commercial and industrial ambient environments, excluding extended automotive under-hood use.
Internal Sense Resistor	20 mΩ ±7.5% - rated for 3 A continuous, eliminating external resistor for moderate-current applications; copper-matched TCR reduces thermal drift error.

Pinout & Package

LT6110IDC#TRMPBF is housed in an 8-lead (2 mm × 2 mm) plastic DFN package with exposed pad (Pin 9 = V–). The package is RoHS-compliant, lead-free, and requires soldering of the exposed pad to PCB ground plane for thermal and electrical integrity.

Pin/Terminal	Circuit Role	Design Meaning
NC (Pin 1)	No-connect terminal	Not internally bonded; must be left floating or tied to V– for mechanical stability - no electrical function.
IOUT (Pin 2)	Sinking current output	Delivers precise sinking current = V_SENSE/R_IN; connects to FB or ADJ pin of ground-referenced regulators (e.g., LT3980) to raise output voltage.
IMON (Pin 3)	Sourcing current output	Delivers precise sourcing current = 3 × V_SENSE/R_IN; interfaces directly with output-referenced regulators (e.g., LT1083) or current-reference ICs (e.g., LT3080).
V– (Pin 4)	Negative supply rail	System ground reference; must be connected to PCB ground plane and tied to exposed pad (Pin 9) for thermal management.
–IN (Pin 5)	Inverting input of sense amplifier	Connects to load side of sense resistor (internal or external); Kelvin connection here minimizes trace-resistance error.
RS (Pin 6)	Internal sense resistor terminal	Connected to internal 20 mΩ resistor; leave open when using external sense resistor; ties to load node in typical 2-wire compensation.
V+ (Pin 7)	Positive supply rail	Connects to high-side of sense resistor; requires ≥0.1 µF ceramic bypass capacitor to V– for stability and noise immunity.
+IN (Pin 8)	Non-inverting input of sense amplifier	Driven to same potential as –IN by internal amplifier; R_IN from V+ sets gain and output current magnitude.

Key Features

Feature	Design Value
Dual current-mode outputs	IOUT (sinking) and IMON (sourcing) enable direct interface with both ground- and output-referenced regulators - eliminates level-shifting circuitry and improves loop stability.
Integrated 20 mΩ sense resistor	Enables compact, low-BOM-count designs up to 3 A; eliminates layout sensitivity of external Kelvin connections while maintaining copper-like TCR matching to wire resistance.
Single-resistor gain configuration	R_IN from V+ to +IN sets full-scale output current - simplifies design iteration and avoids trimming or calibration during production.
Low 30 µA supply current	Supports always-on monitoring in battery-backed or ultra-low-power systems without compromising compensation accuracy at light loads.
180 kHz signal bandwidth	Ensures sub-6 µs rise time for load-step compensation - maintains tight regulation during dynamic load transients in DC/DC and adapter applications.

Applications

USB Power Adapter	Power over Ethernet (PoE)
Use Scenario: 5 V/3 A USB-C adapter delivering power over 1.5 m cable with 120 mΩ total loop resistance. IC Role / Device Role / Timing Role: High-side current monitor generating proportional IOUT current to boost regulator FB voltage and cancel IR drop at remote device port. Use Value: Improves load regulation from –10% to ±1.1%, meeting USB PD 3.0 voltage tolerance (±5%) at full load without Kelvin sensing.	Use Scenario: IEEE 802.3af/at-powered endpoint (e.g., IP camera) receiving 48 V over 100 m Cat5e cable with ~25 Ω round-trip resistance. IC Role / Device Role / Timing Role: Compensates for worst-case 2.5 V drop at 400 mA by sourcing IMON current into LT3080's SET pin to raise local 12 V rail. Use Value: Enables stable 12 V output at endpoint despite long-cable voltage sag - avoids brownout resets and eliminates need for 4-wire remote sense wiring.
Industrial DC/DC Converter	Plug-in DC Adapter
Use Scenario: 24 V input, 5 V/5 A isolated DC/DC module powering PLC I/O card located 30 cm away on same PCB via narrow 10 mil traces. IC Role / Device Role / Timing Role: Monitors output current and sinks IOUT into feedback divider to counteract 120 mV trace drop at full load. Use Value: Achieves <±0.5% load regulation across 0–5 A - exceeds typical DC/DC spec (±2%) and eliminates need for costly wide-trace routing or point-of-load converters.	Use Scenario: Wall-mounted 12 V/2 A adapter supplying power to network switch via 2 m molded cable with 350 mΩ resistance. IC Role / Device Role / Timing Role: Uses internal 20 mΩ sense resistor and IMON output to adjust LT1083-based linear post-regulator, compensating for cable loss. Use Value: Maintains 12.0 V ±0.1 V at switch input across full load range - prevents undervoltage lockout and extends adapter usable life in high-temperature enclosures.

USB Power Adapter

Power over Ethernet (PoE)

Use Scenario: 5 V/3 A USB-C adapter delivering power over 1.5 m cable with 120 mΩ total loop resistance.

IC Role / Device Role / Timing Role: High-side current monitor generating proportional IOUT current to boost regulator FB voltage and cancel IR drop at remote device port.

Use Value: Improves load regulation from –10% to ±1.1%, meeting USB PD 3.0 voltage tolerance (±5%) at full load without Kelvin sensing.

Use Scenario: IEEE 802.3af/at-powered endpoint (e.g., IP camera) receiving 48 V over 100 m Cat5e cable with ~25 Ω round-trip resistance.

IC Role / Device Role / Timing Role: Compensates for worst-case 2.5 V drop at 400 mA by sourcing IMON current into LT3080's SET pin to raise local 12 V rail.

Use Value: Enables stable 12 V output at endpoint despite long-cable voltage sag - avoids brownout resets and eliminates need for 4-wire remote sense wiring.

Industrial DC/DC Converter

Plug-in DC Adapter

Use Scenario: 24 V input, 5 V/5 A isolated DC/DC module powering PLC I/O card located 30 cm away on same PCB via narrow 10 mil traces.

IC Role / Device Role / Timing Role: Monitors output current and sinks IOUT into feedback divider to counteract 120 mV trace drop at full load.

Use Value: Achieves <±0.5% load regulation across 0–5 A - exceeds typical DC/DC spec (±2%) and eliminates need for costly wide-trace routing or point-of-load converters.

Use Scenario: Wall-mounted 12 V/2 A adapter supplying power to network switch via 2 m molded cable with 350 mΩ resistance.

IC Role / Device Role / Timing Role: Uses internal 20 mΩ sense resistor and IMON output to adjust LT1083-based linear post-regulator, compensating for cable loss.

Use Value: Maintains 12.0 V ±0.1 V at switch input across full load range - prevents undervoltage lockout and extends adapter usable life in high-temperature enclosures.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX4008AASA+	Single sourcing output only (no sinking IOUT); 500 µV max V_OS; 2.7 V to 5.5 V supply only.	Limited to low-voltage, output-referenced regulators; not suitable for 24 V/48 V systems or ground-referenced control.	Select when only sourcing output is needed and supply is ≤5.5 V; verify regulator reference topology compatibility.
INA213AIDCKR	Voltage-output (not current-mode); bidirectional sensing; 100 µV max V_OS; requires external op-amp or DAC to generate compensation voltage.	Needs additional active components to interface with regulator feedback; increases BOM count and layout complexity.	Choose if bidirectional current monitoring is required or if system already includes precision voltage-to-current conversion stage.

Compared with MAX4008AASA+ and INA213AIDCKR, the LT6110IDC#TRMPBF uniquely delivers dual current-mode outputs with wide 2–50 V operation and integrated sense resistor - enabling simpler, more robust wire-drop compensation in single-supply industrial and PoE systems without added active circuitry.

Availability

LT6110IDC#TRMPBF is available at Aetrix Electronics and suitable for USB power adapters, Power over Ethernet endpoints, and industrial DC/DC converters requiring stable component supply with guaranteed –40°C to +85°C performance and DFN package compatibility.

Supply support for LT6110IDC#TRMPBF 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

Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, formed through the acquisition of Linear Technology in 2017.

The LT6110IDC#TRMPBF belongs to ADI's precision current sense amplifier product line, engineered specifically for remote voltage regulation in power distribution systems where wire resistance degrades load accuracy - targeting USB, PoE, industrial adapters, and distributed power architectures.

FAQ

What is the maximum continuous current the LT6110IDC#TRMPBF can measure using its internal sense resistor?

The LT6110IDC#TRMPBF integrates a 20 mΩ sense resistor rated for 3 A continuous current and 5 A transient current (<0.1 s). At 3 A, the internal resistor develops 60 mV V_SENSE, remaining within its thermal and accuracy specifications across –40°C to +85°C. Exceeding 3 A continuous risks exceeding junction temperature limits and degrading offset drift performance - external sense resistors are recommended above this threshold.

Can the LT6110IDC#TRMPBF be used with both ground-referenced and output-referenced voltage regulators?

Yes, the LT6110IDC#TRMPBF supports both topologies via its dual outputs: IOUT (sinking) interfaces directly with ground-referenced regulators (e.g., LT3980), while IMON (sourcing) connects to output-referenced regulators (e.g., LT1083) or current-reference ICs (e.g., LT3080). This eliminates level-shifting circuitry and simplifies compensation network design across diverse regulator families.

How does the LT6110IDC#TRMPBF achieve voltage drop compensation without a Kelvin sense connection?

The LT6110IDC#TRMPBF measures load current via a series sense resistor (internal or external) and generates a proportional current (IOUT or IMON) that adjusts the regulator's feedback node. This forces the regulator to increase its output voltage by exactly the IR drop across the wire - effectively "pre-compensating" before the drop occurs. No remote sense wires are needed because the correction is derived from current, not voltage measurement at the load.

What is the role of the R_IN resistor connected between V+ and +IN on the LT6110IDC#TRMPBF?

The R_IN resistor sets the gain of the LT6110IDC#TRMPBF's current outputs: IOUT = V_SENSE/R_IN and IMON = 3 × V_SENSE/R_IN. It determines how much current is delivered per millivolt of sensed voltage - directly defining the compensation voltage (e.g., IIOUT × R_F) applied to the regulator's feedback network to cancel wire drop.

Is the exposed pad on the LT6110IDC#TRMPBF's DFN package electrically connected, and how must it be handled?

Yes, the exposed pad (Pin 9) on the LT6110IDC#TRMPBF is internally connected to V– and must be soldered to a PCB ground plane. This connection is mandatory for thermal dissipation (θ_JA = 80.6°C/W) and electrical stability. Leaving it unconnected or floating violates Absolute Maximum Ratings and risks thermal runaway or output inaccuracy due to elevated junction temperature.

LT6110IDC#TRMPBF Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 8-WFDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Applications:: General Purpose

Current - Supply:: 30µA

Voltage - Supply:: 2V ~ 50V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-DFN (2x2)

LT6110IDC#TRMPBF FAQ

1.How can I place an order for LT6110IDC#TRMPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for LT6110IDC#TRMPBF 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 LT6110IDC#TRMPBF reliable?

The price and inventory of LT6110IDC#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6110IDC#TRMPBF is usually 5 days.

3.What payment methods are accepted for LT6110IDC#TRMPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6110IDC#TRMPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LT6110IDC#TRMPBF?

LT6110IDC#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LT6110IDC#TRMPBF 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 LT6110IDC#TRMPBF?

For technical support, including LT6110IDC#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6110IDC#TRMPBF requirements.

6.How does Aetrix verify that LT6110IDC#TRMPBF is sourced from the original manufacturer or authorized distributors?

All LT6110IDC#TRMPBF 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 LT6110IDC#TRMPBF meets industry standards.

7.What is the process for return or replacement of LT6110IDC#TRMPBF?

All LT6110IDC#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6110IDC#TRMPBF, 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 LT6110IDC#TRMPBF part is unused and in its original packaging.

Return procedure for LT6110IDC#TRMPBF:

1.Submit a request within 90 days.

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

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