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Analog Devices Inc. LT6700CDCB-3#TRPBF
- Part No.:
- LT6700CDCB-3#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Comparators
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LT6700CDCB-3#TRPBF.pdf
- Description:
- IC COMPARATOR 2 W/VOLT REF 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,723
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Product details
Overview
LT6700CDCB-3#TRPBF from Analog Devices is a micropower dual comparator with integrated 400mV reference, configured with two noninverting inputs for threshold detection in low-voltage systems. It operates from 1.4V to 18V supply, draws only 6.5µA typical quiescent current at 5V, features 6.5mV typical internal hysteresis, and delivers open-collector outputs sinking >5mA - ideal for battery-powered voltage monitoring and relay driving.
For engineers reviewing the LT6700CDCB-3#TRPBF datasheet, LT6700CDCB-3#TRPBF pinout, LT6700CDCB-3#TRPBF application, or LT6700CDCB-3#TRPBF equivalent, this page provides verified package mapping (6-lead 2mm × 3mm DFN), confirmed input polarity (dual noninverting), temperature range (0°C to 70°C), absolute maximum ratings (36V input/output capability), and design-critical propagation delays (18µs HL / 29µs LH).
Technical Context
The LT6700CDCB-3#TRPBF implements two independent comparators sharing a precision 400mV internal reference, with both external inputs connected to the noninverting terminals - enabling simultaneous high-side threshold detection against a fixed reference. Its Over-The-Top® input architecture allows input voltages up to 36V regardless of supply voltage, supporting direct connection to high-voltage rails without level-shifting.
Each comparator features built-in 6.5mV typical hysteresis to prevent oscillation near trip points, and open-collector outputs rated for 18V (or 36V for HV variants) pull-up - enabling level translation across disparate supply domains. The device is specified over 0°C to 70°C ambient and supports stable operation down to 1.4V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 1.4V to 18V - enables operation directly from single-cell Li-ion or alkaline batteries. |
| Quiescent Current | 6.5µA typ at 5V - extends battery life in always-on monitoring applications. |
| Reference Voltage | 400mV ±1.25% max at 25°C - provides stable, factory-trimmed threshold without external components. |
| Hysteresis | 6.5mV typ - eliminates chatter during slow-rising/falling input transitions. |
| Input Voltage Range | –0.3V to 36V - supports Over-The-Top® operation above VS, simplifying high-side sensing. |
| Output Sink Current | >5mA guaranteed - drives LEDs, small relays, or logic inputs without external buffers. |
| Propagation Delay | 18µs (HL), 29µs (LH) at 5V - ensures timely response in real-time fault detection circuits. |
Pinout & Package
LT6700CDCB-3#TRPBF uses a 6-lead (2mm × 3mm) plastic DFN package with exposed pad internally connected to GND. Pin numbering follows standard top-view orientation with pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUTA | Open-collector output of Comparator A | Sinks current when +INA exceeds 400mV; supports pull-up to up to 36V independent of VS. |
| GND | Ground reference and reference low side | Common return for internal 400mV reference and external circuitry; connects to exposed thermal pad. |
| +INA | Noninverting input of Comparator A | Accepts signals from –0.3V to 36V; comparison made against internal 400mV reference. |
| OUTB | Open-collector output of Comparator B | Independent output mirroring OUTA behavior; enables dual-threshold or redundancy schemes. |
| VS | Core supply voltage | Powers comparator core and reference; does not constrain input/output voltage ranges. |
| +INB | Noninverting input of Comparator B | Second high-side threshold input; allows parallel or staggered detection (e.g., under/over-voltage). |
Key Features
| Feature | Design Value |
|---|---|
| Dual noninverting input topology | Enables simultaneous high-side monitoring of two independent rails against same 400mV reference. |
| Over-The-Top® input capability | Allows direct connection to 24V/36V systems while powered from 3.3V or 5V, eliminating level shifters. |
| Integrated 400mV reference | Removes need for external precision reference or resistor divider, reducing BOM count and layout area. |
| Internal hysteresis | 6.5mV typical hysteresis eliminates need for external positive feedback networks and associated stability tuning. |
| Low supply current | 6.5µA typical consumption enables multi-year battery life in IoT sensor nodes and portable instruments. |
Applications
| Battery Voltage Monitor | Industrial Threshold Detector |
|---|---|
Use Scenario: Monitoring alkaline AA cell voltage to detect end-of-life (<1.6V) while consuming <10µA total. IC Role / Device Role / Timing Role: Dual comparator compares battery voltage against 400mV reference scaled by resistive dividers; LT6700CDCB-3#TRPBF provides hysteresis-stabilized flags. Use Value: Eliminates external reference and hysteresis components, reducing solution size by >30% and power by 5× vs discrete alternatives. | Use Scenario: Detecting overvoltage on a 24V industrial bus using a single 5V supply rail. IC Role / Device Role / Timing Role: LT6700CDCB-3#TRPBF accepts 24V input directly on +INA/+INB (Over-The-Top®), compares to 400mV, asserts open-collector fault signal. Use Value: Removes need for voltage dividers, level shifters, or isolated supplies - simplifies certification and improves long-term accuracy. |
| Relay Driver Interface | Handheld Instrument Power Sequencer |
Use Scenario: Driving a 12V relay coil from a 3.3V microcontroller GPIO via comparator output. IC Role / Device Role / Timing Role: LT6700CDCB-3#TRPBF OUTA pulls low when input exceeds threshold; external 12V pull-up energizes relay with >5mA sink capability. Use Value: Replaces transistor+resistor driver stage; enables direct 12V load control from low-voltage logic without level translation. | Use Scenario: Enabling subsystem power rails only after main supply reaches valid voltage in portable test equipment. IC Role / Device Role / Timing Role: LT6700CDCB-3#TRPBF monitors 5V and 3.3V rails independently; dual outputs control enable pins of LDOs or load switches. Use Value: Guarantees clean power sequencing with built-in hysteresis, preventing brown-out glitches during startup or dropout events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator with reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT6700IDCB-3#TRPBF | Same functionality and pinout, but rated for –40°C to 85°C operating range and 0°C to 70°C specified range. | Required for extended temperature industrial deployments where ambient exceeds 70°C. | Select when wider temperature qualification is needed; otherwise LT6700CDCB-3#TRPBF suffices for commercial environments. |
| TLV3702IDR | Single-supply dual comparator with 1.24V reference; no internal hysteresis; 65µA supply current; SOT-23-8 package. | Lacks integrated hysteresis and Over-The-Top® input; requires external hysteresis network and level shifting for >VS inputs. | Choose only if higher speed (1.5µs propagation) is critical and system can accommodate added external components and layout complexity. |
Compared with LT6700IDCB-3#TRPBF, LT6700CDCB-3#TRPBF offers identical electrical performance at lower cost for commercial-temperature applications; compared with TLV3702IDR, it delivers 10× lower quiescent current, integrated hysteresis, and Over-The-Top® operation - reducing component count and improving reliability in battery and industrial monitoring.
Availability
LT6700CDCB-3#TRPBF is available at Aetrix Electronics and suitable for battery-powered system monitoring, industrial threshold detection, and handheld instrument power sequencing requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for LT6700CDCB-3#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LT6700 family was designed specifically for ultra-low-power, high-accuracy voltage monitoring in space-constrained and energy-sensitive applications - integrating reference, hysteresis, and Over-The-Top® inputs into minimal footprint packages.
FAQ
What is the operating temperature range for LT6700CDCB-3#TRPBF?
The LT6700CDCB-3#TRPBF is characterized for operation from 0°C to 70°C (specified range) and functional from –40°C to 85°C. It is part of the commercial-grade LT6700C series, making it suitable for indoor consumer and commercial equipment where ambient temperatures remain within these bounds. Full parametric guarantees apply only within the 0°C to 70°C range per the datasheet.
Does LT6700CDCB-3#TRPBF require external hysteresis components?
No, LT6700CDCB-3#TRPBF includes 6.5mV typical internal hysteresis per comparator, eliminating the need for external positive feedback resistors. This simplifies design, improves consistency across production units, and avoids layout sensitivity issues common with discrete hysteresis networks - a key advantage over general-purpose comparators like LM393 or TLV3702.
Can LT6700CDCB-3#TRPBF monitor a 24V rail while powered from 3.3V?
Yes. LT6700CDCB-3#TRPBF supports Over-The-Top® operation: its inputs accept voltages from –0.3V to 36V independent of the VS supply (1.4V–18V). When powered from 3.3V, +INA and +INB can directly sense 24V signals, comparing them to the internal 400mV reference - no external level-shifting circuitry is required.
What is the output configuration of LT6700CDCB-3#TRPBF?
LT6700CDCB-3#TRPBF features two independent open-collector outputs (OUTA and OUTB). Each can sink >5mA and tolerate up to 18V (or 36V in HV variants) on the pull-up side, regardless of VS. This enables flexible interfacing with different logic families, optocouplers, or relay drivers without additional buffering or level translation.
How does the dual noninverting input configuration of LT6700CDCB-3#TRPBF differ from LT6700-1 or LT6700-2 variants?
LT6700CDCB-3#TRPBF has both external inputs (+INA and +INB) connected to the noninverting terminals, meaning each comparator asserts low when its input rises above 400mV. In contrast, LT6700-1 offers one inverting and one noninverting input (suitable for window detection), and LT6700-2 offers two inverting inputs (for active-low thresholding). The -3 variant is optimal for high-side overvoltage or presence detection.
LT6700CDCB-3#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 6-WFDFN Exposed Pad
- Series:
- Over-The-Top®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- with Voltage Reference
- Number of Elements:
- 2
- Output Type:
- Open-Collector
- Voltage - Supply, Single/Dual (±):
- 1.4V ~ 18V
- :
- -
- Voltage - Input Offset (Max):
- 0.01µA @ 18V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 16µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 29µs
- Propagation Delay (Max):
- 6.5mV
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 6-DFN (2x3)
LT6700CDCB-3#TRPBF FAQ
1.How can I place an order for LT6700CDCB-3#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6700CDCB-3#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 LT6700CDCB-3#TRPBF reliable?
The price and inventory of LT6700CDCB-3#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6700CDCB-3#TRPBF is usually 5 days.
3.What payment methods are accepted for LT6700CDCB-3#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6700CDCB-3#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6700CDCB-3#TRPBF?
LT6700CDCB-3#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6700CDCB-3#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 LT6700CDCB-3#TRPBF?
For technical support, including LT6700CDCB-3#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6700CDCB-3#TRPBF requirements.
6.How does Aetrix verify that LT6700CDCB-3#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT6700CDCB-3#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 LT6700CDCB-3#TRPBF meets industry standards.
7.What is the process for return or replacement of LT6700CDCB-3#TRPBF?
All LT6700CDCB-3#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6700CDCB-3#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 LT6700CDCB-3#TRPBF part is unused and in its original packaging.
Return procedure for LT6700CDCB-3#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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