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Analog Devices Inc. LTC2966ISW#TRPBF
- Part No.:
- LTC2966ISW#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
LTC2966ISW#TRPBF.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,582
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Product details
Overview
LTC2966ISW#TRPBF from Analog Devices is a micropower dual-channel high-voltage voltage monitor IC designed for system-level power supervision in 100V-rated industrial and automotive power rails. It features independent 5×–40× scalable internal resistive dividers, ±1.4% max threshold accuracy over temperature, 7µA quiescent current, and 100V-rated open-drain outputs with integrated 500kΩ pull-up. It is used to generate precise undervoltage/overvoltage status signals in telecom power supplies.
For engineers reviewing the LTC2966ISW#TRPBF datasheet, LTC2966ISW#TRPBF pinout, LTC2966ISW#TRPBF application, or LTC2966ISW#TRPBF equivalent, key selection criteria include input monitoring range (1.75V–98V), built-in hysteresis configuration (via INH/INL grounding), polarity control (PSA/PSB), and SW package thermal performance (θJA = 35°C/W).
Technical Context
The LTC2966ISW#TRPBF implements two independent comparator channels, each with user-selectable attenuation (5x/10x/20x/40x) via RS1/RS2 pins and polarity inversion via PSA/PSB. Each channel uses an internal high-impedance resistive divider (70MΩ) to sense VIN voltages up to 100V while drawing only nanoamp-level input bias current.
Thresholds are set by external reference voltages applied to INHA/INLA (Channel A) and INHB/INLB (Channel B), scaled by the selected range. Built-in hysteresis (14–30mV at VIN, scaling with range) is enabled by grounding either INH or INL, eliminating need for external hysteresis networks. Outputs drive up to 100V with active low pull-down and gated internal 500kΩ pull-up to VINT (3.5–5V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage Range | 3.5V to 100V on VINA/VINB - supports direct monitoring of 48V, 60V, and 96V battery systems without external level-shifting. |
| Monitoring Range per Channel | 1.75V to 98V - configurable via 5x/10x/20x/40x internal divider scaling to match target rail voltage. |
| Quiescent Current | 7µA typical - enables always-on supervision in battery-backed or energy-constrained systems. |
| Threshold Accuracy | ±1.4% max over –40°C to +85°C - ensures reliable trip points across industrial temperature range without calibration. |
| Output Rating | 100V absolute max on OUTA/OUTB - allows direct connection to high-side monitored rails up to 96V with external pull-up. |
| Propagation Delay | 40–80µs - deterministic response time for fault detection in safety-critical power sequencing. |
| Reference Voltage | 2.402V ±12mV - stable buffered output for biasing external resistor networks setting INH/INL thresholds. |
Pinout & Package
Package: 20-Lead Plastic Small Outline (Wide, 0.300 inch), SOIC-Wide (SW). Thermal resistance θJA = 35°C/W. Exposed pad not present (unlike QFN variant). Operating ambient temperature range: –40°C to +85°C (I-grade).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VINA | Channel A high-voltage monitor input | Senses up to 100V via internal 70MΩ divider; powers internal circuitry with priority over VINB. |
| VINB | Channel B high-voltage monitor input | Senses up to 100V; secondary supply source; UVLO triggered if both VINA and VINB fall below 3V. |
| OUTA / OUTB | Active-low, high-voltage open-drain outputs | 100V-rated; internal 500kΩ pull-up to VINT (3.5–5V); support wire-OR logic and external pull-up to 100V. |
| INHA / INHB | Channel A/B high-threshold reference inputs | Accept 0.35–2.45V; multiplied by selected range (5x–40x) to set rising-edge trip point at VIN. |
| INLA / INLB | Channel A/B low-threshold reference inputs | Accept 0.35–2.45V; multiplied by selected range to set falling-edge trip point; grounding enables built-in hysteresis. |
| PSA / PSB | Channel A/B polarity select inputs | Ground = noninverting (OUT low when VIN < INL); REF or >1.4V = inverting (OUT low when VIN > INH). |
| RS1A/RS2A / RS1B/RS2B | Channel A/B range select inputs | Binary-coded (LL/LH/HL/HH) to configure 5x/20x/10x/40x attenuation for precise threshold scaling. |
| REF | 2.402V buffered reference output | Stable, low-noise (140µVRMS) voltage source for biasing external INH/INL resistor networks. |
| GND | Analog ground reference | Return path for internal circuitry and comparator references; must be low-impedance for accurate threshold operation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent high-voltage monitoring channels | Enables simultaneous supervision of primary and backup power rails (e.g., 48V main + 24V standby) with no shared timing or accuracy coupling. |
| Configurable 5×–40× internal resistive dividers | Eliminates need for high-voltage external resistor networks; reduces board space, leakage error, and BOM count. |
| Built-in hysteresis (14–30mV at VIN) | Activated by grounding INH or INL; removes requirement for external hysteresis resistors and prevents chatter near threshold. |
| 100V-rated outputs with internal 500kΩ pull-up | Supports direct interface to high-side monitored rails; eliminates external pull-up resistors in low-power applications. |
| ±1.4% max threshold accuracy over –40°C to +85°C | Ensures consistent fault detection across full industrial temperature range without software compensation. |
Applications
| Telecom Power Supervision | Industrial 48V DC Distribution |
|---|---|
Use Scenario: Monitoring –48V telecom rectifier output and backup battery voltage in central office equipment. IC Role / Device Role / Timing Role: Dual-channel voltage supervisor generating separate OK/fault flags for main and backup supplies. Use Value: Enables automatic switchover and predictive maintenance by detecting undervoltage before brownout-induced system reset. | Use Scenario: Supervising 48V intermediate bus in PLC backplanes and motor drives. IC Role / Device Role / Timing Role: High-accuracy, low-power monitor verifying rail stability during cold-start and load transients. Use Value: Prevents erroneous controller resets by rejecting noise-induced false trips via built-in hysteresis and 7µA quiescent draw. |
| Automotive 12V/24V System Monitoring | Battery Management Systems (BMS) |
Use Scenario: Validating ignition-switched 12V and auxiliary 24V rails in commercial vehicle ECUs. IC Role / Device Role / Timing Role: Dual-input supervisor with independent thresholds and polarity control for asymmetric rail requirements. Use Value: Guarantees safe microcontroller boot only after both rails stabilize above valid thresholds, reducing field failures. | Use Scenario: Monitoring cell stack voltage and charger output in 16S lithium-ion BMS front-ends. IC Role / Device Role / Timing Role: High-voltage comparator with scalable thresholds tracking 0–67.2V pack voltage with ±1.4% accuracy. Use Value: Supports precise end-of-charge and overvoltage protection without external op-amps or precision references. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel high-voltage voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV809EYZR | Single-channel, 6V max supply, 3.08V fixed threshold, SOT-23-3 package | Only monitors one rail; lacks scalability, hysteresis control, and high-voltage capability | Select only for low-voltage, single-rail cost-sensitive applications where 100V operation is unnecessary. |
| MAX6816EUT+T | Single-channel, 5.5V max supply, adjustable via external resistors, 1.6µA IQ, SOT-23-6 | No dual-channel capability; limited to ≤5.5V input; requires external high-voltage divider for >5.5V rails | Use only for sub-6V rails where ultra-low IQ is critical and dual monitoring is not required. |
Compared with TLV809EYZR and MAX6816EUT+T, the LTC2966ISW#TRPBF uniquely delivers dual independent 100V-capable monitoring with programmable scaling, built-in hysteresis, and industrial temperature grade - making it the only viable option for 48V/96V telecom, industrial, and automotive power supervision.
Availability
LTC2966ISW#TRPBF is available at Aetrix Electronics and suitable for telecom power supervision, industrial 48V DC distribution, and automotive 12V/24V system monitoring requiring stable component supply and long-term lifecycle support.
Supply support for LTC2966ISW#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 LTC2966ISW#TRPBF belongs to the Linear Technology voltage supervisor product line, engineered specifically for high-reliability, low-power, high-voltage system monitoring in harsh environments.
FAQ
What is the maximum input voltage the LTC2966ISW#TRPBF can monitor?
The LTC2966ISW#TRPBF supports a maximum input voltage of 100V on VINA and VINB pins, with absolute maximum rating of 140V. Its internal 70MΩ resistive divider enables direct sensing of high-voltage rails such as 48V telecom, 60V industrial, and 96V battery systems without external components. Operation is guaranteed from 3.5V to 100V.
How does the built-in hysteresis work on the LTC2966ISW#TRPBF?
The LTC2966ISW#TRPBF provides built-in hysteresis (14–30mV at VIN, scaling with range) by grounding either INHA or INLA (for Channel A) or INHB or INLB (for Channel B). Grounding INH enables rising-edge hysteresis; grounding INL enables falling-edge hysteresis. This eliminates external hysteresis resistors and prevents oscillation near threshold transitions.
Can the LTC2966ISW#TRPBF monitor two different voltage rails simultaneously?
Yes, the LTC2966ISW#TRPBF has two fully independent monitoring channels (A and B), each with dedicated inputs (VINA/VINB), reference inputs (INHA/INLA, INHB/INLB), range select (RS1A/RS2A, RS1B/RS2B), polarity control (PSA/PSB), and outputs (OUTA/OUTB). This allows simultaneous supervision of dissimilar rails - e.g., 48V main and 12V control - with distinct thresholds and logic polarities.
What is the purpose of the REF pin on the LTC2966ISW#TRPBF?
The REF pin on the LTC2966ISW#TRPBF provides a precise 2.402V ±12mV buffered reference output (140µVRMS noise) used to bias external resistor networks that set INHA/INLA and INHB/INLB voltages. It also serves as a logic-high source for PSA/PSB and RS1/RS2 pins, enabling simple resistor-based threshold configuration without external regulators.
Does the LTC2966ISW#TRPBF require external pull-up resistors on its outputs?
No - the LTC2966ISW#TRPBF includes an internal 500kΩ pull-up resistor to an internally generated supply (VINT, 3.5–5V). External pull-ups are optional and only needed when driving higher voltages (up to 100V) or faster rise times. The internal pull-up draws no current if an external resistor pulls OUT above VOH (~2.375V), preserving ultra-low system power.
LTC2966ISW#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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
LTC2966ISW#TRPBF FAQ
1.How can I place an order for LTC2966ISW#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2966ISW#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 LTC2966ISW#TRPBF reliable?
The price and inventory of LTC2966ISW#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2966ISW#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2966ISW#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2966ISW#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2966ISW#TRPBF?
LTC2966ISW#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2966ISW#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 LTC2966ISW#TRPBF?
For technical support, including LTC2966ISW#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2966ISW#TRPBF requirements.
6.How does Aetrix verify that LTC2966ISW#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2966ISW#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 LTC2966ISW#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2966ISW#TRPBF?
All LTC2966ISW#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2966ISW#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 LTC2966ISW#TRPBF part is unused and in its original packaging.
Return procedure for LTC2966ISW#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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