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Analog Devices Inc. LTC2966CUD#TRPBF
- Part No.:
- LTC2966CUD#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
LTC2966CUD#TRPBF.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,023
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Product details
Overview
LTC2966CUD#TRPBF from Analog Devices is a micropower dual-channel high-voltage voltage monitor IC designed for system-level power supervision in 12V–48V industrial and telecom rails. It features 100V-rated outputs, ±1.4% threshold accuracy over temperature, 7µA quiescent current, and independent 5x/10x/20x/40x range scaling per channel. It is used to generate reliable undervoltage/overvoltage status signals in battery-powered telecom equipment.
For engineers reviewing the LTC2966CUD#TRPBF datasheet, LTC2966CUD#TRPBF pinout, LTC2966CUD#TRPBF application, or LTC2966CUD#TRPBF equivalent, key selection criteria include input voltage range (3.5V–100V), built-in hysteresis configuration, polarity-selectable open-drain outputs, and QFN-16 package compatibility with space-constrained PCB layouts.
Technical Context
The LTC2966CUD#TRPBF integrates two independent high-voltage comparator channels, each with internal 70MΩ resistive dividers and programmable attenuation (5x–40x) via RS1/RS2 pins. Each channel uses separate INHA/INLA and INHB/INLB reference inputs biased from a 2.402V on-chip reference to set rising/falling thresholds.
Its output stage delivers 100V-rated active pull-down with internal 500kΩ gated pull-up to an internally regulated 3.5V–5V rail; polarity is selectable per channel via PSA/PSB pins. Undervoltage lockout (3V) disables outputs when both VINA and VINB fall below UVLO minus hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 3.5V to 100V on VINA/VINB - supports direct monitoring of 48V telecom, 24V industrial, and 12V automotive rails without external level-shifting. |
| Quiescent Current | 7µA typical - enables multi-year operation in battery-backed systems such as remote sensors or portable test equipment. |
| Threshold Accuracy | ±1.4% max over –40°C to 125°C - ensures reliable trip points across extended temperature environments without calibration. |
| Output Rating | 100V absolute max on OUTA/OUTB - allows direct connection to high-side rails up to 98V with external pull-up resistors. |
| Internal Reference | 2.402V ±12mV - provides stable bias for external resistor networks setting INH/INL voltages, reducing dependency on external references. |
| Hysteresis Options | Built-in 14–30mV (scaled by range) or user-defined via INH–INL differential - eliminates need for external hysteresis components in most undervoltage detection schemes. |
| Package | 16-lead 3mm × 3mm QFN (UD) - exposes thermal pad for improved power dissipation in compact, thermally constrained designs. |
Pinout & Package
Package: 16-lead (3mm × 3mm) plastic QFN with exposed thermal pad (pin 17), rated for 0°C to 70°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | VINA, INHA, INLA, RS1A, RS2A, PSA, GND, REF | Channel A monitor input, comparator reference inputs, range/polarity controls, ground, and reference output - configure rising/falling thresholds and logic polarity independently. |
| 9, 10, 11, 12, 13, 14, 15, 16 | OUTA, VINB, INHB, INLB, RS1B, RS2B, PSB, OUTB | Channel A/B outputs, Channel B monitor input, reference inputs, range/polarity controls - enable dual-rail monitoring with separate hysteresis and polarity per channel. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent high-voltage monitors | Each channel supports full 3.5V–100V input range with dedicated range select (RS1/RS2) and polarity (PS) pins - eliminates need for discrete resistor networks or dual ICs in multi-rail systems. |
| Programmable threshold scaling | 5x/10x/20x/40x internal divider ratios per channel - allows precise threshold setting (e.g., 18V falling threshold using 10x range + 1.8V INL) while keeping INH/INL within 0.35V–2.45V common-mode range. |
| 100V-rated open-drain outputs | Active pull-down + internal 500kΩ gated pull-up - enables direct interface to 24V/48V logic buses or microcontroller GPIOs without level translators or external pull-ups. |
| Selectable built-in hysteresis | Grounding INH or INL activates fixed hysteresis (14–30mV, scaled by range) - reduces component count and board area versus external RC hysteresis networks. |
| Micropower operation | 7µA supply current at 100V input - extends battery life in portable instrumentation and low-power IoT edge nodes where continuous supervision is required. |
Applications
| Telecom Power Supervision | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Monitoring redundant -48V DC distribution rails in central office line cards to detect undervoltage faults before brownout-induced data corruption. IC Role / Device Role / Timing Role: Dual-channel voltage monitor generating independent fault flags for primary and backup supplies, with 10x scaling configured for 40V/36V thresholds. Use Value: Eliminates need for external precision resistors and op-amps, reducing BOM cost by $0.32/unit and enabling 3mm × 3mm footprint on dense backplane PCBs. | Use Scenario: Supervising 24V field power inputs in modular PLC chassis to prevent erroneous actuator activation during supply sag or hot-swap transients. IC Role / Device Role / Timing Role: High-voltage comparator with 20x scaling and built-in hysteresis on INLB to detect 42V overvoltage and 38V undervoltage on DIN-rail power bus. Use Value: Withstands 140V transient spikes per ABS MAX rating and maintains valid logic states down to 1.25V input - improves system robustness in electrically noisy factory environments. |
| Automotive Battery Management | Portable Medical Equipment |
Use Scenario: Monitoring 12V starter battery and 48V mild-hybrid rail in vehicle ECU modules to trigger safe shutdown during deep discharge or overcharge conditions. IC Role / Device Role / Timing Role: Dual-channel supervisor with independent polarity selection (PSA=low, PSB=high) to generate active-low undervoltage flag and active-high overvoltage flag on same PCB. Use Value: 0°C to 70°C grade matches automotive cabin temperature requirements; 7µA quiescent current minimizes parasitic drain on auxiliary batteries during long-term parking. | Use Scenario: Ensuring stable 5V/3.3V logic supply integrity in handheld ultrasound devices powered by Li-ion packs, where false resets must be avoided during RF transmission bursts. IC Role / Device Role / Timing Role: Low-power voltage monitor with 5x scaling on Channel A (for 5V rail) and 10x on Channel B (for 3.3V rail), using REF-biased dividers for <±200mV total threshold error. Use Value: ±1.4% threshold accuracy over temperature prevents nuisance trips during clinical use; QFN-16 package fits within 8mm × 8mm space budget on compact PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel high-voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326–MAX6328 series | Single-channel, fixed 2.5V/3.0V/3.3V/5.0V thresholds; no adjustable scaling or dual-rail capability. | Suitable only for single-supply monitoring with standard logic voltages; lacks 100V tolerance and programmable hysteresis. | Select only if monitoring one rail below 6V with no scaling flexibility required - not a functional substitute for LTC2966CUD#TRPBF's dual 100V-capable architecture. |
| TLV809E | Single-channel, 3.08V fixed threshold, 6V max supply, SOT-23-3 package; no reference output or hysteresis control. | Designed for low-voltage microcontroller reset generation only; cannot monitor >6V rails or provide configurable thresholds. | Use only for basic 3.3V/5V supply reset - does not support the LTC2966CUD#TRPBF's high-voltage dual-monitoring function or design flexibility. |
Compared with MAX6326 and TLV809E, the LTC2966CUD#TRPBF uniquely supports dual independent 100V-input channels with programmable scaling, built-in hysteresis, and polarity control - making it the only viable option for compact, high-reliability supervision of multiple industrial or telecom power rails.
Availability
LTC2966CUD#TRPBF is available at Aetrix Electronics and suitable for telecom power supervision, industrial PLC I/O modules, and automotive battery management requiring stable component supply and long-lifecycle availability.
Supply support for LTC2966CUD#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) is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2966 belongs to Linear's precision voltage monitoring product line, engineered specifically for high-voltage, low-power, and space-constrained applications where reliability and accuracy across wide temperature ranges are critical.
FAQ
What is the operating temperature range for the LTC2966CUD#TRPBF?
The LTC2966CUD#TRPBF is specified for 0°C to 70°C ambient operation, matching the 'C' grade designation in the part number. This range is validated per the Absolute Maximum Ratings table and Electrical Characteristics section of the official datasheet, with all parameters-including threshold accuracy (±1.4% max) and supply current (7µA typ)-guaranteed across this interval.
Can the LTC2966CUD#TRPBF monitor both 12V and 48V rails simultaneously?
Yes, the LTC2966CUD#TRPBF can monitor both rails simultaneously: configure Channel A (VINA/INHA/INLA) with 10x scaling for 12V (e.g., 1.2V INH → 12V rising threshold) and Channel B (VINB/INHB/INLB) with 40x scaling for 48V (e.g., 1.2V INH → 48V rising threshold). Each channel operates independently with its own range, hysteresis, and polarity settings.
Does the LTC2966CUD#TRPBF require external pull-up resistors on OUTA and OUTB?
No, the LTC2966CUD#TRPBF includes internal 500kΩ gated pull-up resistors to an internally generated 3.5V–5V rail, eliminating the need for external pull-ups in most applications. External pull-ups are optional and only required when interfacing to voltages >5V (e.g., 24V logic), leveraging the part's 100V output rating and blocking circuitry.
How is hysteresis implemented on the LTC2966CUD#TRPBF?
Hysteresis on the LTC2966CUD#TRPBF is implemented either by applying a differential voltage between INH and INL (e.g., INHA = 1.2V, INLA = 1.0V for 200mV hysteresis at 10x range) or by grounding INH or INL to activate built-in hysteresis (14–30mV, scaled by range). The latter reduces external component count and avoids oscillation risks from resistor mismatch.
What is the function of the REF pin on the LTC2966CUD#TRPBF?
The REF pin on the LTC2966CUD#TRPBF provides a buffered 2.402V ±12mV output used to bias external resistor networks that set INH/INL voltages. It also serves as a logic-high source for RS1/RS2 and PSA/PSB pins, enabling full functionality without requiring an additional low-voltage supply rail.
LTC2966CUD#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Monitor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x3)
LTC2966CUD#TRPBF FAQ
1.How can I place an order for LTC2966CUD#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2966CUD#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 LTC2966CUD#TRPBF reliable?
The price and inventory of LTC2966CUD#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2966CUD#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2966CUD#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2966CUD#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2966CUD#TRPBF?
LTC2966CUD#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2966CUD#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 LTC2966CUD#TRPBF?
For technical support, including LTC2966CUD#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2966CUD#TRPBF requirements.
6.How does Aetrix verify that LTC2966CUD#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2966CUD#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 LTC2966CUD#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2966CUD#TRPBF?
All LTC2966CUD#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2966CUD#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 LTC2966CUD#TRPBF part is unused and in its original packaging.
Return procedure for LTC2966CUD#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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