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Analog Devices Inc. LT6106IS5#TRPBF
- Part No.:
- LT6106IS5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
LT6106IS5#TRPBF.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,429
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Product details
Overview
LT6106IS5#TRPBF from Analog Devices (formerly Linear Technology) is a precision high-side current sense amplifier in a 5-lead TSOT-23 package, featuring 250 µV max input offset voltage, 40 nA max input bias current, and 2.7 V to 36 V supply range. It converts shunt voltage to ground-referenced output current for accurate monitoring in automotive battery management and industrial power rails.
For engineers reviewing the LT6106IS5#TRPBF datasheet, LT6106IS5#TRPBF pinout, LT6106IS5#TRPBF application, or LT6106IS5#TRPBF equivalent, key selection criteria include guaranteed –40°C to 85°C operation, open-collector current-output architecture, resistor-configurable gain (e.g., 20/50/100), PSRR ≥106 dB, and low 65 µA typical supply current at 12 V.
Technical Context
The LT6106IS5#TRPBF implements a high-impedance current-sense topology where an internal amplifier forces –IN to match +IN potential, enabling precise sensing across a shunt resistor. Its transconductance stage delivers output current IOUT = VSENSE/RIN, independent of common-mode voltage up to 36 V.
Gain is set externally via RIN (100 Ω to 500 Ω) and ROUT (e.g., 10 kΩ), supporting full-scale sense voltages from 25 mV to 500 mV. The open-collector output requires external pull-up or load resistor to generate VOUT = IOUT × ROUT, with minimum output voltage as low as 7 mV at V+ = 12 V and RIN = 500 Ω.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 36 V - supports wide-input industrial and automotive rails without external regulators |
| Input Offset Voltage | 250 µV max - enables accurate sensing of sub-100 mA currents with 50 mΩ shunt |
| Input Bias Current | 40 nA max - minimizes error from trace resistance in Kelvin-connected shunts |
| Power Supply Rejection | 106 dB min - maintains accuracy despite ripple on 12 V or 24 V bus supplies |
| Output Current | 1 mA max - sets upper limit for ROUT selection (e.g., ≤5 kΩ for 5 V full scale) |
| Operating Temperature | –40°C to +85°C - qualified for under-hood and factory-floor environments |
| Small-Signal Bandwidth | 200 kHz - sufficient for DC–10 kHz current monitoring in motor control and PSU feedback |
Pinout & Package
LT6106IS5#TRPBF uses a 5-lead TSOT-23 (S5) package, 1 mm profile, JEDEC MO-193 compliant, with exposed pad not connected internally. Pin 1 is OUT (current source), Pin 2 is V– (ground reference), Pin 3 is –IN (feedback node), Pin 4 is +IN (high-side shunt connection), Pin 5 is V+ (positive supply).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Current output terminal | Sources IOUT = VSENSE/RIN; requires external ROUT to ground for voltage output |
| V– (Pin 2) | Ground reference | Must be tied to system ground; defines output voltage reference point |
| –IN (Pin 3) | Inverting input of internal amplifier | Driven to match +IN potential; connects to V+ via RIN to set gain |
| +IN (Pin 4) | Non-inverting input | Connects directly or via Kelvin trace to load side of shunt resistor |
| V+ (Pin 5) | Positive supply and common-mode reference | Connected to either side of shunt; determines whether LT6106 supply current is included in measurement |
Key Features
| Feature | Design Value |
|---|---|
| Resistor-configurable gain | Supports gains of 20, 50, or 100 via standard RIN/ROUT combinations - eliminates need for custom IC variants |
| Low quiescent current | 65 µA typical at 12 V - extends battery life in portable diagnostics and IoT sensors |
| High PSRR | 106 dB minimum - rejects switching noise from adjacent DC/DC converters in compact PCB layouts |
| Kelvin-compatible inputs | Separate +IN/–IN pins enable 4-wire shunt connection - reduces PCB trace resistance errors to <0.1% |
| Wide common-mode range | Operates with VCM up to 36 V while sensing mV-level shunt drops - replaces isolated amplifiers in cost-sensitive designs |
Applications
| Battery Monitoring | Industrial Power Rail Monitoring |
|---|---|
Use Scenario: Real-time charge/discharge current tracking in 12 V lead-acid or Li-ion backup systems. IC Role / Device Role / Timing Role: High-side current sense amplifier converting shunt voltage to ground-referenced analog output. Use Value: 250 µV offset enables ±50 mA resolution with 10 mΩ shunt, supporting State-of-Charge estimation within 2% error. | Use Scenario: Continuous current supervision on 24 V PLC I/O modules and sensor power supplies. IC Role / Device Role / Timing Role: Precision current-to-voltage translator for microcontroller ADC input. Use Value: 40 nA bias current prevents >10 µV error from 250 mΩ PCB traces, ensuring <0.5% full-scale accuracy over temperature. |
| Motor Overcurrent Protection | LED Driver Current Regulation |
Use Scenario: Fast-response fault detection in brushed DC motor drives during stall or short-circuit events. IC Role / Device Role / Timing Role: High-bandwidth (200 kHz) current monitor feeding comparator or MCU interrupt pin. Use Value: 3.5 µs step response (0–100 mV) allows detection of 10 A surges within 5 µs, enabling hardware-level shutdown before MOSFET failure. | Use Scenario: Closed-loop current control in constant-current LED drivers for signage and architectural lighting. IC Role / Device Role / Timing Role: Shunt-based feedback element in analog current regulation loop. Use Value: 0.25% typical gain error ensures ±3 mA tolerance at 1 A output, maintaining consistent lumen output across line voltage variations. |
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 |
|---|---|---|---|
| INA240A1DR | Fixed gain (20 V/V), 50 µV max offset, 2.7–80 V supply, SOIC-8 package | Higher accuracy but larger footprint; lacks resistor-programmable gain flexibility | Choose INA240A1DR when fixed-gain simplicity and lower offset outweigh need for SOT-23 size and gain tuning |
| MAX40056ATA+T | Fixed gain (50 V/V), 125 µV max offset, 2.7–65 V supply, 6-pin WLP package | Smaller than TSOT-23 but no exposed pad; higher offset drift (0.3 µV/°C vs LT6106's 1 µV/°C) | Choose MAX40056ATA+T for ultra-compact space-constrained designs where 125 µV offset is acceptable |
Compared with INA240A1DR and MAX40056ATA+T, the LT6106IS5#TRPBF offers unique resistor-configurable gain in a thermally efficient TSOT-23 package, making it optimal for cost-sensitive, multi-range current sensing where layout area and thermal performance are critical.
Availability
LT6106IS5#TRPBF is available at Aetrix Electronics and suitable for battery monitoring, industrial power rail supervision, and motor overcurrent protection requiring stable component supply across automotive and industrial temperature grades.
Supply support for LT6106IS5#TRPBF 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 its precision analog portfolio, emphasizing high-performance signal conditioning, power management, and interface ICs for demanding industrial and automotive applications.
The LT6106 product line delivers high-side current sensing with ultra-low offset and bias current in miniature packages, targeting applications where accuracy, size, and supply efficiency must coexist - such as portable test equipment and distributed power systems.
FAQ
What is the operating temperature range specified for the LT6106IS5#TRPBF?
The LT6106IS5#TRPBF is rated for operation from –40°C to +85°C, with full electrical specifications guaranteed across this industrial temperature range. This differs from the LT6106CS5#TRPBF (0°C to 70°C) and LT6106HS5#TRPBF (–40°C to 125°C) variants. The 'I' grade ensures reliable performance in factory automation, telecom power systems, and automotive body electronics where ambient temperatures exceed commercial limits.
How is gain configured on the LT6106IS5#TRPBF?
Gain on the LT6106IS5#TRPBF is set externally using two resistors: RIN between –IN and V+, and ROUT between OUT and V–. The effective voltage gain equals ROUT/RIN, with standard configurations including 20 (RIN = 499 Ω, ROUT = 10 kΩ), 50 (RIN = 200 Ω), and 100 (RIN = 100 Ω). This resistor-based method avoids trimming costs and supports field-adjustable ranges without changing the LT6106IS5#TRPBF itself.
Does the LT6106IS5#TRPBF include reverse supply protection?
No, the LT6106IS5#TRPBF does not integrate reverse-polarity protection. If reverse voltage is possible during testing or fault conditions, a Schottky diode must be added in series with the V– pin to limit reverse current and prevent damage. This external diode reduces effective supply voltage by ~0.3 V, which must be accounted for in low-voltage designs using the LT6106IS5#TRPBF near its 2.7 V minimum.
What is the maximum sense voltage supported by the LT6106IS5#TRPBF?
The LT6106IS5#TRPBF specifies VSENSE(MAX) = 0.5 V under Electrical Characteristics (RIN = 500 Ω), meaning full accuracy is guaranteed for differential inputs up to 500 mV. Exceeding this may degrade gain error and offset performance but will not damage the device if power dissipation remains within limits. For 100 mV full-scale designs, the LT6106IS5#TRPBF achieves >70 dB dynamic range due to its 150 µV typical offset.
Can the LT6106IS5#TRPBF monitor its own supply current?
Yes - the LT6106IS5#TRPBF supply current can be included in the measurement by connecting the V+ pin to the load side of the shunt resistor (rather than the supply side). In this configuration, both load current and LT6106IS5#TRPBF quiescent current flow through RSENSE. However, the LT6106IS5#TRPBF's output current (IOUT) is drawn through RIN and is not sensed, regardless of V+ connection point.
LT6106IS5#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 200 kHz
- Current - Input Bias:
- 40 nA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- 70µA
- Current - Output / Channel:
- 1 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
LT6106IS5#TRPBF FAQ
1.How can I place an order for LT6106IS5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6106IS5#TRPBF 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 LT6106IS5#TRPBF reliable?
The price and inventory of LT6106IS5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6106IS5#TRPBF is usually 5 days.
3.What payment methods are accepted for LT6106IS5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6106IS5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6106IS5#TRPBF?
LT6106IS5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6106IS5#TRPBF 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 LT6106IS5#TRPBF?
For technical support, including LT6106IS5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6106IS5#TRPBF requirements.
6.How does Aetrix verify that LT6106IS5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT6106IS5#TRPBF 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 LT6106IS5#TRPBF meets industry standards.
7.What is the process for return or replacement of LT6106IS5#TRPBF?
All LT6106IS5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6106IS5#TRPBF, 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 LT6106IS5#TRPBF part is unused and in its original packaging.
Return procedure for LT6106IS5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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