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Analog Devices Inc. LT6703IDC-3#TRPBF
- Part No.:
- LT6703IDC-3#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Comparators
- Package:
- 3-WFDFN Exposed Pad
- Datasheet:
-
LT6703IDC-3#TRPBF.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 3DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,843
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Product details
Overview
LT6703IDC-3#TRPBF from Analog Devices (formerly Linear Technology) is a micropower supply voltage monitor IC featuring an internal 400mV reference, noninverting input configuration, and open-collector output. It operates from 1.4V to 18V supply, draws only 6.5μA typical quiescent current at 5V, and delivers 5mA sink capability with 6.5mV typical hysteresis - ideal for battery-powered system monitoring and low-voltage threshold detection in industrial control and handheld instruments.
For engineers reviewing the LT6703IDC-3#TRPBF datasheet, LT6703IDC-3#TRPBF pinout, LT6703IDC-3#TRPBF application, or LT6703IDC-3#TRPBF equivalent, key selection criteria include its guaranteed –40°C to 85°C operating range, ±1.25% max total threshold error at 25°C, Over-The-Top® input capability down to ground, and compatibility with level-translated outputs up to 18V independent of VS.
Technical Context
The LT6703IDC-3#TRPBF integrates a precision comparator with a trimmed 400mV bandgap reference and built-in hysteresis (6.5mV typ), eliminating external components for stable threshold detection. Its noninverting input accepts voltages from –0.3V to 18V relative to GND - independent of supply voltage - enabling direct sensing of battery, rail, or sensor signals without level-shifting circuitry.
Designed for ultra-low-power operation, the device uses proprietary micropower biasing to maintain 6.5μA supply current across 1.4V–18V while delivering fast propagation delays (29μs LH, 18μs HL) and robust output drive (5mA sink, <200mV VOL at 5mA). The exposed-pad DFN package ensures thermal stability in compact, high-density layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.4V to 18V - supports single-cell Li-ion, multi-cell alkaline, and industrial 12V rails without regulation. |
| Rising Input Threshold | 400mV ±1.25% max at 25°C - enables precise undervoltage lockout or battery end-of-discharge detection. |
| Quiescent Current | 6.5μA typ at 5V - extends battery life in always-on monitoring applications beyond 10 years on coin cells. |
| Hysteresis | 6.5mV typ - prevents chatter during slow-rising/falling inputs and rejects noise without external feedback. |
| Output Sink Current | 5mA min over temperature - directly drives LEDs, MOSFET gates, or optocouplers without buffer stages. |
| Input Voltage Range | –0.3V to 18V vs GND - allows direct connection to unregulated sources, including battery terminals below ground. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and automotive cabin environments without derating. |
Pinout & Package
LT6703IDC-3#TRPBF is housed in a 3-lead (2mm × 2mm) plastic DFN package with exposed thermal pad (Pin 4 = GND, must be soldered). Pin 1 = OUT (open-collector), Pin 2 = GND, Pin 3 = +IN (noninverting input).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT | Open-collector comparator output | Sinks up to 5mA; off-state voltage floats to ≤18V regardless of VS - enables level translation and wired-AND logic. |
| GND | Ground reference and reference return | Common return for internal 400mV reference and output load; exposed pad must be thermally anchored. |
| +IN | Noninverting comparator input | Accepts –0.3V to 18V; triggers output low when voltage exceeds 400mV threshold (rising edge). |
Key Features
| Feature | Design Value |
|---|---|
| Internal 400mV reference | ±1.25% max total threshold error eliminates need for external precision reference or resistor divider calibration. |
| Over-The-Top® input | Operates with input down to –0.3V and up to 18V vs GND - supports direct battery terminal sensing without clamping diodes. |
| Micropower operation | 6.5μA supply current enables >10-year battery life in continuous monitoring of 3V coin cells. |
| Guaranteed hysteresis | 6.5mV typical internal hysteresis ensures noise immunity without external positive feedback components. |
| Wide supply range | 1.4V minimum start-up voltage allows use with partially discharged batteries or energy-harvesting sources. |
Applications
| Battery-Powered System Monitoring | Threshold Detectors |
|---|---|
Use Scenario: Monitoring lithium-ion battery voltage during discharge to trigger low-battery warning before cutoff. IC Role / Device Role / Timing Role: Noninverting comparator compares battery voltage against internal 400mV reference scaled by resistor divider to set 3.0V threshold. Use Value: Eliminates external reference and reduces BOM count by two components while maintaining ±1.25% threshold accuracy over temperature. | Use Scenario: Detecting overvoltage on a 5V microcontroller I/O rail to prevent latch-up or damage. IC Role / Device Role / Timing Role: LT6703IDC-3#TRPBF senses rail voltage via resistive divider; output pulls low to activate protection circuit when threshold exceeded. Use Value: 6.5μA quiescent current avoids loading sensitive power rails; Over-The-Top® input tolerates transient overshoot beyond VS. |
| Relay Driving | Industrial Control Systems |
Use Scenario: Controlling 12V relay coil activation based on sensor signal crossing a fixed threshold. IC Role / Device Role / Timing Role: Comparator output sinks relay driver transistor base current; open-collector output interfaces directly to NPN/PNP drivers. Use Value: 5mA sink capability drives small-signal transistors without buffering; 18V output tolerance matches common relay coil ratings. | Use Scenario: Supervising PLC analog input module power supply for brownout detection. IC Role / Device Role / Timing Role: Monitors 24V DC supply rail using resistive divider; asserts fault flag when voltage drops below 22V. Use Value: –40°C to +85°C rating ensures reliability in factory-floor enclosures; hysteresis prevents false trips during line ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supply voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT6700IDC-3#TRPBF | Dual-channel version with identical per-channel specs; 12μA total supply current vs 6.5μA single-channel. | Requires dual-threshold monitoring (e.g., window detection); occupies same DFN footprint but higher quiescent draw. | Select when needing two independent comparators in same package; not drop-in for single-threshold use. |
| TLV7031IDBVR | Single comparator with 1.24V reference; no internal hysteresis; 650nA quiescent current; 1.6V–6.5V supply range. | Lower power but narrower supply range and no integrated reference - requires external resistor network for 400mV threshold. | Select for ultra-low-power sub-2V systems where external reference is acceptable; not suitable for 12V/18V rails. |
Compared with LT6700IDC-3#TRPBF and TLV7031IDBVR, the LT6703IDC-3#TRPBF uniquely combines single-channel operation, integrated 400mV reference, full 1.4V–18V supply support, and guaranteed hysteresis - making it optimal for cost-sensitive, space-constrained battery and industrial monitors requiring minimal external components.
Availability
LT6703IDC-3#TRPBF is available at Aetrix Electronics and suitable for battery-powered system monitoring, industrial control systems, and handheld instrument designs requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LT6703IDC-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 acquired Linear Technology in 2017 and maintains its precision analog portfolio, including high-reliability comparators and references for demanding industrial and automotive applications.
The LT6703IDC-3#TRPBF belongs to Linear's micropower voltage monitor product line, engineered specifically for low-power, high-accuracy supply supervision in space- and energy-constrained systems where external references and hysteresis networks add cost and board area.
FAQ
What is the exact input threshold voltage specification for LT6703IDC-3#TRPBF?
The LT6703IDC-3#TRPBF has a rising input threshold voltage of 400mV ±1.25% maximum at 25°C, with typical hysteresis of 6.5mV. This means the falling threshold is approximately 393.5mV, ensuring stable switching without external feedback. The specification applies across the full –40°C to +85°C operating range, with worst-case error bounded per datasheet tables.
Can LT6703IDC-3#TRPBF monitor voltages below ground?
Yes - the LT6703IDC-3#TRPBF's +IN pin accepts voltages from –0.3V to 18V relative to GND, regardless of supply voltage. Inputs down to –0.3V will not cause malfunction, though input bias current increases slightly below ground. For sustained operation below –0.3V, external current limiting to <10mA is required per Absolute Maximum Ratings.
Does LT6703IDC-3#TRPBF require external hysteresis components?
No - the LT6703IDC-3#TRPBF includes 6.5mV typical internal hysteresis, eliminating the need for external positive feedback resistors. This simplifies PCB layout and improves consistency across production units. External hysteresis can be added if greater hysteresis is needed, but the internal value remains fixed and unaffected.
What is the maximum output voltage the LT6703IDC-3#TRPBF can tolerate in the off state?
In the off (high-impedance) state, the LT6703IDC-3#TRPBF output can withstand up to 18V above GND - independent of the VS supply voltage. This enables level translation, such as interfacing a 3.3V microcontroller to a 12V relay driver, without additional level-shifting circuitry. Exposed pad must be soldered for thermal and electrical integrity.
Is LT6703IDC-3#TRPBF pin-compatible with LT6703IDC-2#TRPBF?
No - the LT6703IDC-3#TRPBF uses a noninverting input (+IN), while the LT6703IDC-2#TRPBF uses an inverting input (–IN). Their pinouts are identical (OUT/GND/+IN vs OUT/GND/–IN), but functional behavior differs: LT6703IDC-3#TRPBF asserts low output when input rises above 400mV, whereas LT6703IDC-2#TRPBF asserts low when input falls below 400mV. Circuit redesign is required for substitution.
LT6703IDC-3#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 3-WFDFN Exposed Pad
- Series:
- Over-The-Top®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- 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):
- 15µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 29µs
- Propagation Delay (Max):
- 11.5mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 3-DFN (2x2)
LT6703IDC-3#TRPBF FAQ
1.How can I place an order for LT6703IDC-3#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6703IDC-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 LT6703IDC-3#TRPBF reliable?
The price and inventory of LT6703IDC-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 LT6703IDC-3#TRPBF is usually 5 days.
3.What payment methods are accepted for LT6703IDC-3#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6703IDC-3#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6703IDC-3#TRPBF?
LT6703IDC-3#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6703IDC-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 LT6703IDC-3#TRPBF?
For technical support, including LT6703IDC-3#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6703IDC-3#TRPBF requirements.
6.How does Aetrix verify that LT6703IDC-3#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT6703IDC-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 LT6703IDC-3#TRPBF meets industry standards.
7.What is the process for return or replacement of LT6703IDC-3#TRPBF?
All LT6703IDC-3#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6703IDC-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 LT6703IDC-3#TRPBF part is unused and in its original packaging.
Return procedure for LT6703IDC-3#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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