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Analog Devices Inc. LT6110ITS8#TRMPBF
- Part No.:
- LT6110ITS8#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Management - Specialized
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LT6110ITS8#TRMPBF.pdf
- Description:
- IC WIRE DROP COMPENSATOR
- Quantity:
- Payment:
- Shipping:
Inventory:1,438
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Product details
Overview
LT6110ITS8#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 to compensate for voltage drop across wires, traces, or cables in adjustable power supplies. It features an integrated 20mΩ sense resistor (rated for 3A continuous), ≤300µV input offset voltage, ±1% output current accuracy, and operates from 2V to 50V supply. It is used in remote-load voltage regulation for USB power adapters and DC/DC converters.
For engineers reviewing the LT6110ITS8#TRMPBF datasheet, LT6110ITS8#TRMPBF pinout, LT6110ITS8#TRMPBF application, or LT6110ITS8#TRMPBF equivalent, key selection criteria include its 300µV max VOS over –40°C to 85°C, dual-output current mirroring (IOUT = VSENSE/RIN, IMON = 3×VSENSE/RIN), TSOT-23-8 package compatibility, and support for both internal and external sense resistors.
Technical Context
The LT6110ITS8#TRMPBF implements a precision current-sense amplifier with forced +IN = –IN topology, enabling accurate VSENSE measurement across RSENSE. Its two mirrored current outputs-sinking IOUT and sourcing IMON-are directly proportional to load current and configurable via external RIN between V+ and +IN.
It supports wire-drop compensation by injecting feedback current into regulator feedback networks: IOUT sinks current for ground-referenced references (e.g., LT3980), while IMON sources current for output-referenced or current-referenced regulators (e.g., LT3080). Signal bandwidth is 180kHz, and it is fully specified from –40°C to 85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 2V to 50V - enables operation across wide-input industrial and automotive power rails without external level-shifting. |
| Input Offset Voltage | ≤300µV (max, –40°C to 85°C) - allows use of small-value sense resistors (e.g., 10mΩ) while maintaining <1% error at low currents. |
| IOUT Accuracy | ±1% (max, 0°C to 85°C) - ensures predictable voltage compensation magnitude when driving regulator feedback resistors. |
| IMON Accuracy | ±3.5% (max, 0°C to 85°C, I+IN = 100µA) - provides reliable 3× gain sourcing output for output-referenced regulator control. |
| Supply Current | ≤30µA (typ, V+ = 5V) - minimizes system quiescent power impact in battery-powered or energy-sensitive applications. |
| Bandwidth | 180kHz (–3dB) - supports fast transient response to load steps, preserving stability in closed-loop compensation circuits. |
| Operating Temp | –40°C to +85°C - qualified for industrial ambient environments without derating. |
Pinout & Package
LT6110ITS8#TRMPBF is housed in an 8-lead TSOT-23 package (0.65mm pitch, 2.9mm × 1.6mm footprint, 1.1mm height), optimized for space-constrained PCB layouts. The exposed pad is not present in TSOT-23; thermal dissipation relies on PCB copper and θJA = 195°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| NC (Pin 1) | No internal connection | Must be left unconnected; no routing or grounding required. |
| IOUT (Pin 2) | Sinking current output | Sinks current = VSENSE/RIN; used to pull down FB node of ground-referenced regulators (e.g., LT3980). |
| IMON (Pin 3) | Sourcing current output | Sources current = 3 × VSENSE/RIN; connects to regulator ADJ/FB for output-referenced devices (e.g., LT1083). |
| V– (Pin 4) | Negative supply rail | Typically connected to system ground; serves as reference for all internal circuitry and outputs. |
| –IN (Pin 5) | Inverting input of sense amp | Connected to load side of sense resistor; forms Kelvin sense point to reject trace resistance errors. |
| RS (Pin 6) | Internal sense resistor terminal | Connects to load when using internal 20mΩ RSENSE; leave open for external sense resistor use. |
| V+ (Pin 7) | Positive supply rail | Connected to high-side of sense resistor; requires ≥0.1µF bypass capacitor to V–. |
| +IN (Pin 8) | Non-inverting input of sense amp | Driven to match –IN potential; RIN from V+ to +IN sets IOUT/IMON scaling factor. |
Key Features
| Feature | Design Value |
|---|---|
| Dual current-mode outputs | IOUT (sink) and IMON (source) enable flexible interface with both ground- and output-referenced regulators without level shifters. |
| Integrated 20mΩ sense resistor | Rated for 3A continuous current; eliminates external component count and layout sensitivity for ≤3A applications. |
| Resistor-programmable gain | Single external RIN between V+ and +IN sets full-scale output current - simplifies design vs. fixed-gain alternatives. |
| Low 300µV input offset | Enables accurate sensing at low VSENSE (e.g., 10mV), critical for minimizing power loss in high-current, low-drop systems. |
| 180kHz signal bandwidth | Supports dynamic load compensation in switching supplies and prevents phase lag-induced instability in feedback loops. |
Applications
| USB Power Adapters | DC/DC Converters |
|---|---|
Use Scenario: Compensating voltage drop across 1–2m USB cables delivering 5V/3A to peripherals. IC Role / Device Role / Timing Role: High-side current monitor generating IOUT current proportional to load current to boost regulator output voltage. Use Value: Improves remote-load regulation from >5% to <0.5%, meeting USB PD specification tight tolerance requirements. | Use Scenario: Remote sensing in isolated or non-isolated buck converters powering FPGAs or ASICs on separate PCBs. IC Role / Device Role / Timing Role: Translates load current into IMON sourcing current that adjusts feedback divider ratio in real time. Use Value: Eliminates need for 4-wire Kelvin sense cabling, reducing connector cost and complexity while maintaining ±1% load regulation. |
| Plug-In DC Adapters | Power over Ethernet (PoE) |
Use Scenario: Wall-mounted 12V/2A adapters feeding devices over 3m extension cords with >0.3Ω total resistance. IC Role / Device Role / Timing Role: Measures load current via internal RSENSE and drives IOUT into regulator FB pin to raise output voltage preemptively. Use Value: Delivers stable 12V ±3% at load despite 360mV IR drop - avoids brownout resets in embedded controllers. | Use Scenario: Midspan or endpoint PoE injectors compensating for up to 100m of Cat5e cable resistance (≤20Ω loop) at 48V/0.6A. IC Role / Device Role / Timing Role: Monitors PSE-side current and scales IMON to adjust DC/DC output voltage before delivery to PD. Use Value: Ensures IEEE 802.3af/at-compliant 37–57V at PD input under full load, even with worst-case cable temperature rise. |
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 |
|---|---|---|---|
| MAX40056ATA+T | Single sourcing output only; no sinking IOUT; 500kHz bandwidth; 12-bit digital output option available. | Lacks dual-output flexibility; requires ADC interface or external op-amp for analog feedback; better suited for monitoring than active compensation. | Select when digital telemetry or higher bandwidth is prioritized over analog regulator interface simplicity. |
| INA286AIDR | Voltage-output architecture (not current-mode); 20V/V fixed gain; 120kHz bandwidth; 60µV max VOS at 25°C (but drifts with temp). | Requires external op-amp or DAC to convert voltage output to regulator-compatible current; less direct integration with FB/ADJ nodes. | Select when ultra-low offset at room temperature is critical and system can accommodate added signal conditioning. |
Compared with MAX40056ATA+T and INA286AIDR, the LT6110ITS8#TRMPBF uniquely delivers matched sinking/sourcing current outputs with resistor-programmable gain - enabling direct, passive connection to regulator feedback networks without additional active components or layout overhead.
Availability
LT6110ITS8#TRMPBF is available at Aetrix Electronics and suitable for USB power adapters, DC/DC converters, and plug-in DC adapters requiring stable component supply with guaranteed industrial temperature range performance.
Supply support for LT6110ITS8#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 acquired Linear Technology in 2017 and maintains full product support, documentation, and manufacturing continuity for the LT® family.
The LT6110 belongs to Linear's precision current sense amplifier product line, engineered specifically for analog wire-drop compensation in adjustable voltage regulators - emphasizing low offset, dual-output flexibility, and ease of integration without microcontrollers or DACs.
FAQ
What is the maximum continuous current supported by the internal sense resistor in the LT6110ITS8#TRMPBF?
The LT6110ITS8#TRMPBF integrates a 20mΩ sense resistor rated for 3A continuous current and 5A transient current (<0.1 second). Exceeding 3A continuous risks thermal overstress and parametric shift; for >3A applications, an external sense resistor must be used with RS pin left open.
Can the LT6110ITS8#TRMPBF be used with both ground-referenced and output-referenced voltage regulators?
Yes - the LT6110ITS8#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 or current-referenced regulators (e.g., LT3080). No level-shifting circuitry is needed.
What is the recommended RIN value range for optimal accuracy of the LT6110ITS8#TRMPBF?
For best accuracy, IOUT should operate between 30µA and 300µA. Given VSENSE = ILOAD × RSENSE, RIN = VSENSE / IIOUT. For example, at 2A load and 20mΩ RSENSE (VSENSE = 40mV), RIN = 40mV / 150µA ≈ 267Ω - aligning with typical design examples in the LT6110ITS8#TRMPBF datasheet.
Does the LT6110ITS8#TRMPBF require external compensation components for stability?
No - the LT6110ITS8#TRMPBF is internally compensated and requires only a 0.1µF ceramic capacitor from V+ to V–. Its 180kHz bandwidth and current-mode outputs avoid phase-margin issues common in voltage-output amplifiers driving capacitive feedback networks.
How does temperature affect the input offset voltage of the LT6110ITS8#TRMPBF?
The LT6110ITS8#TRMPBF has a guaranteed input offset voltage drift of ≤1µV/°C over –40°C to 85°C. At 85°C, max VOS is 500µV (vs. 300µV at 25°C), contributing directly to wire-drop compensation error - a key factor when designing for worst-case thermal performance.
LT6110ITS8#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- 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:
- TSOT-23-8
LT6110ITS8#TRMPBF FAQ
1.How can I place an order for LT6110ITS8#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6110ITS8#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 LT6110ITS8#TRMPBF reliable?
The price and inventory of LT6110ITS8#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6110ITS8#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT6110ITS8#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6110ITS8#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6110ITS8#TRMPBF?
LT6110ITS8#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6110ITS8#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 LT6110ITS8#TRMPBF?
For technical support, including LT6110ITS8#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6110ITS8#TRMPBF requirements.
6.How does Aetrix verify that LT6110ITS8#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT6110ITS8#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 LT6110ITS8#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT6110ITS8#TRMPBF?
All LT6110ITS8#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6110ITS8#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 LT6110ITS8#TRMPBF part is unused and in its original packaging.
Return procedure for LT6110ITS8#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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