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Analog Devices Inc. LTC2966CSW#TRPBF
- Part No.:
- LTC2966CSW#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
LTC2966CSW#TRPBF.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,220
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Product details
Overview
LTC2966CSW#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 automotive rails. It features 100V-rated inputs (VINA/VINB), ±1.4% threshold accuracy over temperature, 7µA quiescent current, and independently configurable 5x/10x/20x/40x internal resistive dividers - enabling precise undervoltage detection in telecom power supplies and battery management systems.
For engineers reviewing the LTC2966CSW#TRPBF datasheet, LTC2966CSW#TRPBF pinout, LTC2966CSW#TRPBF application, or LTC2966CSW#TRPBF equivalent, key selection criteria include its 100V input rating, built-in hysteresis support via INH/INL grounding, polarity-selectable open-drain outputs with 500kΩ internal pull-up, and SW package compatibility with legacy SO-20 layouts requiring no PCB redesign.
Technical Context
The LTC2966CSW#TRPBF implements two independent comparator channels, each with programmable attenuation (5x–40x) set by RS1/RS2 pins and polarity inversion controlled by PSA/PSB. Thresholds are defined by external reference voltages applied to INHA/INLA (Channel A) and INHB/INLB (Channel B), scaled by the selected range and referenced to an internal 2.402V ±0.024V buffered REF output.
Its UVLO circuit ensures both outputs go low when either VINA or VINB falls below 3V (with 70mV hysteresis), while the 100V-rated OUTA/OUTB pins integrate active pull-down and gated 500kΩ pull-up to an internal 3.5V–5V rail - allowing direct interface to 24V/48V logic without external level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 100V - supports direct monitoring of 48V telecom, 24V industrial, and 12V automotive rails without external divider. |
| Quiescent Current | 7µA - enables always-on supervision in battery-backed systems with multi-year runtime. |
| Threshold Accuracy | ±1.4% max over –40°C to 125°C - ensures reliable trip points across extended temperature environments. |
| Internal Reference | 2.402V ±24mV - provides stable bias for external resistor networks setting INH/INL thresholds. |
| Output Rating | 100V capable - allows OUTA/OUTB to be pulled up directly to 48V or 96V system rails. |
| Propagation Delay | 40–80µs - fast enough for real-time fault response in hot-swap and power sequencing applications. |
| Operating Temp Range | 0°C to 70°C - specified for commercial-grade industrial control and portable equipment use. |
Pinout & Package
Package: 20-Lead Plastic Small Outline (Wide, 0.300 inch), RoHS-compliant, JEDEC MS-013AC. Exposed pad not present (SW package).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VINA | Channel A High-Voltage Monitor Input | Accepts up to 100V; internal 70MΩ divider sets scaling basis for INHA/INLA thresholds. |
| NC | No Connect | Pin 2 and Pin 4 are unconnected - must be left floating or grounded per layout best practice. |
| OUTA | Channel A Status Output | Open-drain, 100V-rated output with internal 500kΩ pull-up; polarity controlled by PSA. |
| NC | No Connect | Pin 6 is unconnected - no routing required. |
| REF | 2.402V Buffered Reference Output | Supplies precision bias for external INH/INL resistor networks; max load 100µA. |
| INHA | Channel A High Threshold Reference Input | Sets rising-edge trip point when scaled by RS1A/RS2A; valid range 0.35V–2.45V. |
| INLA | Channel A Low Threshold Reference Input | Sets falling-edge trip point; difference from INHA defines hysteresis if both used. |
| RS1A | Channel A Range Select Bit 1 | Configures 5x/10x/20x/40x attenuation with RS2A (L/L = 5x, H/L = 10x, etc.). |
| RS2A | Channel A Range Select Bit 2 | See RS1A - jointly determines internal divider ratio for VINA threshold scaling. |
| PSA | Channel A Polarity Select | GND = noninverting (OUTA low on VINA undervoltage); REF = inverting (OUTA low on overvoltage). |
| VINB | Channel B High-Voltage Monitor Input | Independent 100V input with priority-based supply generation - VINA > VINB powers internal circuitry. |
| NC | No Connect | Pin 12 is unconnected - leave un-routed. |
| OUTB | Channel B Status Output | Functionally identical to OUTA; enables dual-rail monitoring or OR'ed fault signaling. |
| NC | No Connect | Pin 14 is unconnected - no connection required. |
| GND | Device Ground | Primary return path for REF, comparators, and internal regulators; tie to system ground plane. |
| INHB | Channel B High Threshold Reference Input | Same function as INHA, but for VINB; supports independent configuration per channel. |
| INLB | Channel B Low Threshold Reference Input | Same function as INLA, but for VINB; enables asymmetric hysteresis per rail. |
| RS1B | Channel B Range Select Bit 1 | Independent of Channel A - allows different scaling for VINB vs VINA (e.g., 20x for 48V, 10x for 24V). |
| RS2B | Channel B Range Select Bit 2 | Paired with RS1B to set VINB attenuation ratio. |
| PSB | Channel B Polarity Select | Independent of PSA - permits mixed-mode supervision (e.g., undervoltage on A, overvoltage on B). |
Key Features
| Feature | Design Value |
|---|---|
| 100V Input Monitoring | Direct sensing of 48V/96V rails without external high-voltage resistors - reduces BOM count and board space. |
| Selectable Built-in Hysteresis | Grounding INHA or INLA enables fixed 110mV–880mV hysteresis (range-dependent) - eliminates need for external feedback. |
| Independent Dual-Channel Configuration | Separate RS1/RS2 and PSA/PSB pins per channel allow asymmetric monitoring (e.g., 48V undervoltage + 12V overvoltage). |
| Micropower Operation | 7µA supply current at 100V enables always-on supervision in energy-constrained IoT gateways and remote sensors. |
| Buffered 2.402V Reference | Stable, low-noise (140µVRMS) REF output powers external resistor networks - improves threshold repeatability vs. using noisy system rails. |
| 100V-Rated Outputs | OUTA/OUTB tolerate up to 100V and integrate 500kΩ pull-up - simplifies interface to 24V/48V PLC I/O or relay drivers. |
Applications
| Telecom Power Supervision | Industrial 24V PLC I/O |
|---|---|
Use Scenario: Monitoring –48V DC telecom rectifier outputs for brownout and overvoltage faults in central office equipment. IC Role / Device Role / Timing Role: Dual-channel voltage supervisor detecting undervoltage (<–42V) and overvoltage (>–56V) on primary and backup feeds. Use Value: Enables automatic switchover between redundant power supplies with <80µs response and no external high-voltage dividers. |
Use Scenario: Supervising 24V field power in programmable logic controller backplanes with isolated I/O modules. IC Role / Device Role / Timing Role: Independent monitoring of 24V supply and 5V logic rail - OUTA signals main rail fault, OUTB triggers watchdog reset. Use Value: Eliminates need for separate supervisors per rail; 7µA quiescent current extends uptime during battery backup mode. |
| Automotive Battery Management | Hot-Swap Controller Interface |
Use Scenario: Detecting 12V battery undervoltage (<10.5V) and alternator overvoltage (>15.5V) in vehicle infotainment ECUs. IC Role / Device Role / Timing Role: Configured with 10x range on VINA (12V rail) and 5x on VINB (alternator output) for asymmetric thresholds. Use Value: ±1.4% threshold accuracy ensures reliable engine-start detection and prevents false resets during cranking transients. |
Use Scenario: Providing fault status to hot-swap controllers during live insertion of 48V server line cards. IC Role / Device Role / Timing Role: Monitoring pre-charge voltage ramp and detecting overshoot before enabling main FET gate drive. Use Value: 100V-rated inputs withstand 140V abs max transients; propagation delay <80µs enables sub-cycle fault shutdown. |
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 |
|---|---|---|---|
| TLV809E33DBVR | Single-channel, 3.3V fixed threshold, 6V max input, SOT-23-3 | Only monitors one rail; lacks programmability, hysteresis control, and high-voltage capability | Use only for low-voltage, single-rail applications where cost is critical and 100V operation is unnecessary. |
| MAX6326–L31D | Single-channel, 3.09V fixed threshold, 5.5V max input, SC70-4 | No adjustable range, no dual-channel capability, no 100V tolerance | Applicable only in 3.3V embedded microcontroller reset circuits - not suitable for industrial/high-voltage monitoring. |
Compared with TLV809E33DBVR and MAX6326–L31D, the LTC2966CSW#TRPBF uniquely delivers dual independent 100V-input channels with user-configurable thresholds, built-in hysteresis, and micropower operation - making it the only viable option for compact, high-reliability supervision of multiple industrial or telecom power rails.
Availability
LTC2966CSW#TRPBF is available at Aetrix Electronics and suitable for telecom power systems, industrial PLCs, and automotive battery management applications requiring stable component supply and long-term manufacturability.
Supply support for LTC2966CSW#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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2966CSW#TRPBF belongs to Analog Devices' precision voltage supervisor product line, engineered specifically for high-voltage, low-power system monitoring in harsh environments where reliability and accuracy are critical.
FAQ
What is the maximum input voltage rating for LTC2966CSW#TRPBF?
The LTC2966CSW#TRPBF supports absolute maximum input voltages of –0.3V to 140V on VINA and VINB pins, with guaranteed operation from 3.5V to 100V. Its internal 70MΩ resistive dividers enable direct high-voltage monitoring without external components, making LTC2966CSW#TRPBF ideal for 48V telecom and industrial power rails.
How does the built-in hysteresis work on LTC2966CSW#TRPBF?
LTC2966CSW#TRPBF enables built-in hysteresis by grounding either INHA (for rising-edge hysteresis) or INLA (for falling-edge hysteresis). The hysteresis voltage is range-dependent: 110mV at 5x, 220mV at 10x, 440mV at 20x, and 880mV at 40x. This eliminates external feedback networks while maintaining precise threshold separation in LTC2966CSW#TRPBF designs.
Can LTC2966CSW#TRPBF monitor two different voltage rails simultaneously?
Yes - LTC2966CSW#TRPBF integrates two fully independent monitoring channels (A and B), each with dedicated range select (RS1/RS2), polarity (PS), and threshold inputs (INH/INL). For example, Channel A can supervise a 48V rail at 20x range while Channel B monitors a 12V rail at 5x range, all within a single LTC2966CSW#TRPBF device.
What is the purpose of the REF pin on LTC2966CSW#TRPBF?
The REF pin on LTC2966CSW#TRPBF provides a buffered 2.402V ±24mV reference output used to bias external resistor networks that set INHA/INLA and INHB/INLB voltages. With 140µVRMS noise and 100µA max load, REF ensures stable, low-drift threshold configuration - a key enabler of LTC2966CSW#TRPBF's ±1.4% accuracy over temperature.
Is LTC2966CSW#TRPBF compatible with standard SO-20 footprints?
Yes - LTC2966CSW#TRPBF uses a 20-Lead Plastic Small Outline (Wide, 0.300 inch) package per JEDEC MS-013AC, matching industry-standard SOIC-W20 footprints. Its pinout is optimized for layout separation between high-voltage inputs (VINA/VINB) and low-voltage references (REF/INH/INL), ensuring noise immunity in LTC2966CSW#TRPBF implementations.
LTC2966CSW#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- 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:
- 20-SO
LTC2966CSW#TRPBF FAQ
1.How can I place an order for LTC2966CSW#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2966CSW#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 LTC2966CSW#TRPBF reliable?
The price and inventory of LTC2966CSW#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2966CSW#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2966CSW#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2966CSW#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2966CSW#TRPBF?
LTC2966CSW#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2966CSW#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 LTC2966CSW#TRPBF?
For technical support, including LTC2966CSW#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2966CSW#TRPBF requirements.
6.How does Aetrix verify that LTC2966CSW#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2966CSW#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 LTC2966CSW#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2966CSW#TRPBF?
All LTC2966CSW#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2966CSW#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 LTC2966CSW#TRPBF part is unused and in its original packaging.
Return procedure for LTC2966CSW#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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