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Analog Devices Inc. LT6703IDC-3#TRMPBF
- Part No.:
- LT6703IDC-3#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Comparators
- Package:
- 3-WFDFN Exposed Pad
- Datasheet:
-
LT6703IDC-3#TRMPBF.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 3DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,566
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Product details
Overview
LT6703IDC-3#TRMPBF from Analog Devices (formerly Linear Technology) is a micropower, noninverting supply voltage monitor IC with integrated 400mV reference, 6.5μA quiescent current at 5V, ±1.25% threshold accuracy at 25°C, and guaranteed operation from –40°C to 85°C. It enables precise low-voltage system monitoring in battery-powered instrumentation and automotive control circuits.
For engineers reviewing the LT6703IDC-3#TRMPBF datasheet, LT6703IDC-3#TRMPBF pinout, LT6703IDC-3#TRMPBF application, or LT6703IDC-3#TRMPBF equivalent, key selection factors include its 3-lead DFN package, open-collector output capable of sinking >5mA, internal hysteresis (6.5mV typ), Over-The-Top® input range (–0.3V to 18V), and compatibility with supply voltages from 1.4V to 18V.
Technical Context
The LT6703IDC-3#TRMPBF integrates a precision comparator with a fixed 400mV internal reference and built-in 6.5mV typical hysteresis. Its noninverting input (+IN) accepts signals from –0.3V to 18V independent of VS, while the other input connects internally to the reference. The comparator drives an open-collector output that sinks ≥5mA and supports level translation up to 18V.
This device operates across 1.4V–18V supply range with only 6.5μA typical supply current. Input bias current remains ≤±10nA over temperature, and propagation delays are 18μs (HL) and 29μs (LH) under 10mV overdrive conditions. Total rising threshold error is ±1.25% max at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Rising Threshold Voltage | 400mV ±1.25% max at 25°C - defines exact trip point for supply monitoring without external resistors |
| Supply Current | 6.5μA typ at 5V - enables multi-year battery life in always-on monitoring systems |
| Input Voltage Range | –0.3V to 18V relative to GND - supports Over-The-Top® sensing of voltages above VS or below ground |
| Output Sink Capability | ≥5mA at VOL ≤200mV - directly drives LEDs, MOSFET gates, or logic inputs without buffering |
| Hysteresis | 6.5mV typ - prevents chatter during slow-rising/falling thresholds or noisy supply rails |
| Operating Temp Range | –40°C to +85°C - qualified for industrial and automotive under-hood environments |
| Package | 3-lead 2mm × 2mm DFN - compact footprint with exposed thermal pad for PCB heat dissipation |
Pinout & Package
LT6703IDC-3#TRMPBF uses a 3-lead plastic DFN (2mm × 2mm) with exposed GND pad soldered to PCB. Pin 1 = OUT, Pin 2 = GND, Pin 3 = +IN. VS is connected to the exposed pad (Pin 4), which must be soldered for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT | Open-collector comparator output | Sinks ≥5mA; off-state voltage up to 18V regardless of VS - enables level translation and wire-AND logic |
| GND | Ground reference and reference low side | Return path for internal 400mV reference and output sink current; exposed pad must be soldered |
| +IN | Noninverting comparator input | Accepts –0.3V to 18V signals; triggers high output when voltage exceeds 400mV threshold |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 400mV reference | Eliminates external resistor divider and reference IC - reduces BOM count and layout area |
| Over-The-Top® input | Allows direct sensing of voltages above VS or below GND - simplifies high-side monitoring |
| 6.5μA quiescent current | Enables ultra-low-power wake-up detection in sleep-mode systems - extends battery life |
| Internal hysteresis | 6.5mV typ - removes need for external positive feedback network and associated component tolerance errors |
| Wide 1.4V–18V supply range | Operates from single-cell Li-ion (3.0V) to 12V automotive rails - eliminates supply regulation overhead |
Applications
| Battery-Powered System Monitoring | Industrial Control Systems |
|---|---|
Use Scenario: Monitoring Li-ion battery voltage during deep discharge to prevent cell damage. IC Role / Device Role / Timing Role: Noninverting comparator detects when battery drops below 3.0V using internal 400mV reference scaled by external resistor divider. Use Value: Eliminates external reference and reduces component count by two - improves reliability and board space efficiency. |
Use Scenario: Detecting overvoltage on 24V PLC I/O power rail to trigger shutdown before downstream damage. IC Role / Device Role / Timing Role: High-side monitor senses rail voltage via resistive divider; LT6703IDC-3#TRMPBF compares against 400mV reference. Use Value: Over-The-Top® input allows direct connection to 24V rail without level-shifting circuitry - lowers design complexity. |
| Automotive Monitor and Controls | Handheld Instruments |
Use Scenario: Validating ignition switch status (12V ON / 0V OFF) in vehicle body control module. IC Role / Device Role / Timing Role: Noninverting input monitors switched 12V line; open-collector output pulls down microcontroller interrupt pin. Use Value: Guaranteed –40°C to +85°C operation and 6.5μA supply current meet automotive cold-cranking and low-power requirements. |
Use Scenario: Low-battery warning in portable multimeter powered by two AA cells (3.0V nominal). IC Role / Device Role / Timing Role: Directly monitors battery voltage with no external components - rising threshold triggers LED indicator at 2.4V. Use Value: 400mV reference + resistor scaling achieves ±1.25% trip accuracy - ensures consistent user alert timing across production units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supply voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT6703IDC-2#TRMPBF | Inverting input configuration; identical specs otherwise | Requires signal inversion in divider network - less intuitive for rising-threshold detection | Select when existing schematic uses inverting topology or requires falling-edge trigger behavior |
| LT6700HMS8-3#TRPBF | Dual-channel, 8-lead MSOP package; 400mV reference per channel; 7.5μA supply current | Provides two independent monitors in one package - suitable for dual-rail (e.g., ±12V) systems | Choose when monitoring multiple supplies simultaneously to reduce board area and BOM count |
Compared with LT6703IDC-2#TRMPBF, the LT6703IDC-3#TRMPBF offers direct noninverting interface for rising-threshold detection, simplifying resistor-divider design. Against LT6700HMS8-3#TRPBF, it trades channel count for smaller size and lower cost in single-monitor applications.
Availability
LT6703IDC-3#TRMPBF is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive control modules, and industrial sensor interfaces requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for LT6703IDC-3#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 its precision analog product lines. Linear pioneered high-performance comparators and references for demanding industrial and automotive applications.
The LT6703 family was designed specifically for micropower supply monitoring in space-constrained, battery-sensitive systems - emphasizing ultra-low quiescent current, wide input range, and integrated reference accuracy.
FAQ
What is the function of the exposed pad on the LT6703IDC-3#TRMPBF DFN package?
The exposed pad on the LT6703IDC-3#TRMPBF is electrically connected to GND and serves as the thermal and electrical return path for the internal 400mV reference and output sink current. It must be soldered to a PCB copper pour for proper thermal dissipation and electrical stability - failure to do so may cause threshold drift or output malfunction.
Can the LT6703IDC-3#TRMPBF monitor voltages higher than its supply voltage (VS)?
Yes. The LT6703IDC-3#TRMPBF features Over-The-Top® input architecture: its +IN pin accepts voltages from –0.3V to 18V relative to GND, independent of VS. This allows direct monitoring of 12V or 24V rails even when powered from a 3.3V or 5V supply - no external level-shifter required.
How does the internal hysteresis of the LT6703IDC-3#TRMPBF affect threshold accuracy?
The LT6703IDC-3#TRMPBF provides 6.5mV typical hysteresis to prevent oscillation near the trip point. This creates separate rising (400mV) and falling (393.5mV) thresholds. While hysteresis improves noise immunity, it introduces a known 6.5mV window - design calculations must account for this offset when defining valid operating margins.
What is the maximum sink current capability of the LT6703IDC-3#TRMPBF output?
The LT6703IDC-3#TRMPBF open-collector output guarantees >5mA sink current at VOL ≤200mV (with 10mV input overdrive, VS = 5V). Typical performance reaches 40mA. This allows direct driving of LEDs, small relays, or logic inputs without external transistors - reducing bill-of-materials and board area.
Does the LT6703IDC-3#TRMPBF require external components to operate as a voltage monitor?
No. The LT6703IDC-3#TRMPBF operates as a complete voltage monitor with only a bypass capacitor: a 0.1μF ceramic capacitor between VS and GND is mandatory. For threshold adjustment, a simple resistor divider scales the input voltage to match the 400mV internal reference - no external reference or hysteresis components are needed.
LT6703IDC-3#TRMPBF 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#TRMPBF FAQ
1.How can I place an order for LT6703IDC-3#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6703IDC-3#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 LT6703IDC-3#TRMPBF reliable?
The price and inventory of LT6703IDC-3#TRMPBF 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#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT6703IDC-3#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6703IDC-3#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6703IDC-3#TRMPBF?
LT6703IDC-3#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6703IDC-3#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 LT6703IDC-3#TRMPBF?
For technical support, including LT6703IDC-3#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6703IDC-3#TRMPBF requirements.
6.How does Aetrix verify that LT6703IDC-3#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT6703IDC-3#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 LT6703IDC-3#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT6703IDC-3#TRMPBF?
All LT6703IDC-3#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6703IDC-3#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 LT6703IDC-3#TRMPBF part is unused and in its original packaging.
Return procedure for LT6703IDC-3#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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