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Analog Devices Inc. LT6106CS5#TRPBF
- Part No.:
- LT6106CS5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
LT6106CS5#TRPBF.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,669
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Product details
Overview
LT6106CS5#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 power rails and industrial DC supplies.
For engineers reviewing the LT6106CS5#TRPBF datasheet, LT6106CS5#TRPBF pinout, LT6106CS5#TRPBF application, or LT6106CS5#TRPBF equivalent, key selection criteria include guaranteed –40°C to 70°C operating temperature range, open-collector current-output architecture, resistor-configurable gain (e.g., 20/50/100), and compatibility with low-value shunts down to 5 mΩ for sub-ampere resolution.
Technical Context
The LT6106CS5#TRPBF uses a feedback-controlled PNP current mirror topology to force –IN to track +IN, enabling precise transconductance conversion (IOUT = VSENSE/RIN). Its internal architecture isolates high common-mode voltage (up to 36 V) while delivering ground-referenced output current without level-shifting ICs or isolated amplifiers.
It operates as a two-terminal transconductance device: V+ connects directly to the shunt's high side, V– ties to ground, and OUT sources current proportional to sensed differential voltage. Gain is fully external-set by RIN between V+ and –IN-and independent of ROUT, which only defines output voltage scaling (VOUT = IOUT × ROUT).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 2.7 V to 36 V - supports 3.3 V, 5 V, 12 V, and 24 V systems without external regulators |
| Input Offset Voltage | 250 µV max - enables accurate sensing with 10 mV full-scale shunt voltage (e.g., 2 A × 5 mΩ) |
| Input Bias Current | 40 nA max - minimizes error from PCB trace resistance and allows Kelvin sensing on high-current paths |
| Output Current | 1 mA max - sets upper limit for ROUT selection (e.g., 5 kΩ yields 5 V full scale) |
| PSRR | 106 dB min - rejects supply ripple in noisy battery or switching regulator environments |
| Operating Temp | –40°C to 70°C - validated for commercial-grade automotive cabin and industrial control applications |
| Bandwidth | 200 kHz - sufficient for DC-DC converter current limiting and motor stall detection |
Pinout & Package
LT6106CS5#TRPBF is housed in a 5-lead ThinSOT™ (TSOT-23) package, 1 mm profile, JEDEC MO-193 compliant, with exposed pad not connected internally. Pin 1 (OUT) is marked by a dot or beveled edge.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Current output source | Open-collector PNP output; sinks no current but sources up to 1 mA proportional to VSENSE |
| V– (Pin 2) | Ground reference | Must connect directly to system ground; serves as return path for ROUT and defines output voltage reference |
| –IN (Pin 3) | Inverting input node | Internally driven to match +IN potential; RIN from V+ to –IN sets transconductance gain |
| +IN (Pin 4) | Non-inverting input | Connects to load side of shunt; senses high-side current without ground interruption |
| V+ (Pin 5) | Positive supply & shunt tie point | Connects to shunt's high-voltage side; supplies IC current and defines common-mode input range |
Key Features
| Feature | Design Value |
|---|---|
| Resistor-configurable gain | Gain set externally via RIN; supports 20/50/100 with <0.65% error at 12.5 V supply |
| Low quiescent current | 65 µA typical at 12 V - extends battery life in portable diagnostics and telematics modules |
| Kelvin-compatible inputs | Separate +IN/–IN pins enable 4-wire shunt connection, eliminating PCB trace resistance errors |
| High PSRR | 106 dB rejection of supply noise - maintains accuracy in buck converter feedback loops |
| Wide common-mode range | Operates with VCM up to 36 V while referenced to ground - eliminates need for isolated amplifiers |
Applications
| Battery Monitoring | Power Management |
|---|---|
Use Scenario: Real-time charge/discharge current tracking in 12 V lead-acid or LiFePO4 battery packs for UPS and solar inverters. IC Role / Device Role / Timing Role: High-side current sense amplifier converting shunt voltage to ground-referenced analog output for MCU ADC sampling. Use Value: 250 µV offset enables ±50 mA resolution at 100 A full scale using 1 mΩ shunt, minimizing power loss (<100 mW at 10 A). | Use Scenario: Input current supervision in industrial 24 V DC power supplies with overcurrent shutdown. IC Role / Device Role / Timing Role: Fault-detection front-end that triggers comparator or microcontroller interrupt on current excursion. Use Value: 200 kHz bandwidth supports fast response to short-circuit events (<5 µs rise time), while 40 nA bias current prevents false trips from PCB leakage. |
| Motor Control | Lamp Monitoring |
Use Scenario: Phase current sensing in brushed DC motor drivers for thermal derating and stall detection. IC Role / Device Role / Timing Role: Analog current feedback element feeding into PWM controller or safety logic. Use Value: 36 V absolute max rating tolerates back-EMF spikes; 65 µA supply current avoids loading auxiliary 5 V rail in compact motor modules. | Use Scenario: LED string current verification in automotive lighting control units with CAN bus reporting. IC Role / Device Role / Timing Role: Precision current-to-voltage translator for closed-loop brightness regulation. Use Value: 0.5 V max sense voltage rating allows use with ultra-low RSENSE (e.g., 2 mΩ), preserving headroom for 12 V supply while achieving ±1% full-scale accuracy. |
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 |
|---|---|---|---|
| MAX4080TASA+ | Fixed gain (10/20/50), 100 µV offset, 2.7–76 V supply, SO-8 package | Higher voltage capability but larger footprint; no resistor-configurable gain | Select when fixed-gain simplicity and >36 V operation outweigh TSOT-23 size constraints |
| INA240A1DR | Bi-directional sensing, 20 V/V fixed gain, 2.7–80 V supply, 8-pin SOIC | Supports reverse current detection; higher quiescent current (2.4 mA) | Choose for bidirectional motor control or regenerative braking where polarity reversal must be captured |
Compared with MAX4080TASA+ and INA240A1DR, the LT6106CS5#TRPBF offers smallest footprint, lowest offset drift, and full external gain flexibility-critical for cost-sensitive, space-constrained designs requiring custom full-scale ranges without layout changes.
Availability
LT6106CS5#TRPBF is available at Aetrix Electronics and suitable for battery monitoring, power management, motor control, and lamp monitoring applications requiring stable component supply across automotive, industrial, and embedded systems.
Supply support for LT6106CS5#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 sensor interface ICs for demanding industrial and automotive markets.
The LT6106CS5#TRPBF belongs to Linear's high-side current sense amplifier family, designed specifically for accurate, low-power, ground-referenced current measurement in high-common-mode-voltage environments without isolation components.
FAQ
What is the operating temperature range specified for the LT6106CS5#TRPBF?
The LT6106CS5#TRPBF is specified for operation from –40°C to 70°C ambient temperature. This "C" grade variant is validated across that full range per Linear Technology's datasheet, with electrical characteristics guaranteed at temperature extremes-not just at 25°C. The LT6106CS5#TRPBF differs from the I-grade (–40°C to 85°C) and H-grade (–40°C to 125°C) versions in its tested and warranted temperature envelope.
Can the LT6106CS5#TRPBF measure current in a low-side configuration?
No, the LT6106CS5#TRPBF is designed exclusively for high-side sensing. Its architecture relies on forcing –IN to match +IN using V+ as a reference, and its absolute maximum ratings assume V+ is at or above both inputs. Connecting +IN to ground and –IN to a shunt's low side violates input voltage limits and risks damage. For low-side sensing, consider dedicated low-side amplifiers like the LT6105 or INA199.
How is gain configured on the LT6106CS5#TRPBF, and what resistors are required?
Gain on the LT6106CS5#TRPBF is set by an external resistor RIN connected between V+ (Pin 5) and –IN (Pin 3). The transconductance is 1/RIN, so output current IOUT = VSENSE/RIN. To achieve standard gains: use 100 Ω for gain = 100, 200 Ω for gain = 50, or 499 Ω for gain = 20. RIN must be ≤500 Ω per datasheet specifications.
Does the LT6106CS5#TRPBF include reverse supply protection?
No, the LT6106CS5#TRPBF has no internal reverse-polarity protection. Applying negative voltage to V– or reversing V+ and V– can cause permanent damage. Linear Technology recommends adding a Schottky diode in series with V– (anode to V–, cathode to system ground) to block reverse current during fault testing or miswiring, as documented in the Applications Information section.
What is the maximum sense voltage the LT6106CS5#TRPBF can accurately process?
The LT6106CS5#TRPBF guarantees full electrical performance for input sense voltages up to 0.5 V (500 mV), as specified under VSENSE(MAX) in the Electrical Characteristics table. While the device may function beyond this, parameters such as gain error and offset drift are not characterized above 500 mV. For reliable 1% accuracy, design VSENSE ≤ 500 mV - e.g., 2 A × 250 mΩ or 10 A × 50 mΩ.
LT6106CS5#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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
LT6106CS5#TRPBF FAQ
1.How can I place an order for LT6106CS5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6106CS5#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 LT6106CS5#TRPBF reliable?
The price and inventory of LT6106CS5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6106CS5#TRPBF is usually 5 days.
3.What payment methods are accepted for LT6106CS5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6106CS5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6106CS5#TRPBF?
LT6106CS5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6106CS5#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 LT6106CS5#TRPBF?
For technical support, including LT6106CS5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6106CS5#TRPBF requirements.
6.How does Aetrix verify that LT6106CS5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT6106CS5#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 LT6106CS5#TRPBF meets industry standards.
7.What is the process for return or replacement of LT6106CS5#TRPBF?
All LT6106CS5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6106CS5#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 LT6106CS5#TRPBF part is unused and in its original packaging.
Return procedure for LT6106CS5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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