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Analog Devices Inc. LTC2965CDD#TRPBF
- Part No.:
- LTC2965CDD#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC2965CDD#TRPBF.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,553
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Product details
Overview
LTC2965CDD#TRPBF from Analog Devices is a micropower, single-channel, 100V-rated voltage monitor IC with internal high-value resistive dividers, ±1.4% threshold accuracy over temperature, 7µA quiescent current, and 10x/40x selectable input range. It serves as a compact, low-power supply supervision device in battery-powered telecom systems and industrial power rails.
For engineers reviewing the LTC2965CDD#TRPBF datasheet, LTC2965CDD#TRPBF pinout, LTC2965CDD#TRPBF application, or LTC2965CDD#TRPBF equivalent, key selection criteria include its 100V output rating, built-in hysteresis enable via INH/INL grounding, polarity-selectable output, and 8-lead DFN package compatibility with high-voltage creepage requirements.
Technical Context
The LTC2965CDD#TRPBF implements a high-voltage comparator architecture with an internally generated 2.402V reference (±0.4% over temperature), dual comparator reference inputs (INH/INL), and a 500kΩ internal pull-up to a regulated internal supply (3.5–5V). Its 10x/40x range scaling is controlled by the RS pin, directly determining VIN threshold mapping: 3.5–24.5V at 10x or 14–98V at 40x.
Threshold hysteresis is configurable either externally via INH–INL differential voltage or internally by grounding INH (rising-edge hysteresis) or INL (falling-edge hysteresis), yielding fixed VIN-referred values of 220mV (10x) or 880mV (40x). The PS pin selects inverting or noninverting output polarity relative to VIN transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage Range | 3.5V to 100V input supply - supports direct monitoring of 24V, 48V, and 96V telecom/industrial rails without external level-shifting. |
| Quiescent Current | 7µA typical at 100V - enables multi-year battery life in portable equipment and remote sensors. |
| Threshold Accuracy | ±1.4% max over –45°C to 125°C - ensures reliable undervoltage/overvoltage detection across automotive and industrial ambient conditions. |
| Output Rating | 100V capable with 500kΩ internal pull-up - allows direct interface to high-side logic or optocouplers without external transistor buffering. |
| Reference Voltage | 2.402V ±0.4% - provides stable, low-noise (140µVRMS) bias for precision external resistor divider networks. |
| Propagation Delay | 40–80µs - delivers fast response to supply faults while avoiding false triggering from transient noise. |
| Package | 8-Lead 3mm × 3mm DFN - offers compact footprint and thermal performance (θJA = 43°C/W) for space-constrained PCB layouts. |
Pinout & Package
8-Lead (3mm × 3mm) Plastic DFN package with exposed pad (optional GND connection). Pin 1 = VIN, Pin 2 = REF, Pin 3 = INH, Pin 4 = INL, Pin 5 = OUT, Pin 6 = GND, Pin 7 = RS, Pin 8 = PS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-voltage monitor input | Connects to supply rail under supervision; internal 70MΩ/10x or 280MΩ/40x divider sets sensing ratio. |
| REF | Buffered 2.402V reference output | Provides low-noise, low-drift bias for external resistor networks setting INH/INL thresholds. |
| INH | High-threshold reference input | Scaled by RS to set rising VIN threshold; grounding enables built-in rising-edge hysteresis. |
| INL | Low-threshold reference input | Scaled by RS to set falling VIN threshold; grounding enables built-in falling-edge hysteresis. |
| OUT | Open-drain, 100V-rated status output | Active-low comparator output with internal 500kΩ pull-up; polarity selected via PS pin. |
| GND | Device ground reference | Return path for internal regulator, reference, and comparator; exposed pad may be connected here. |
| RS | Range select input | Logic low = 10x (3.5–24.5V), logic high = 40x (14–98V); connects to REF or GND per Table 1. |
| PS | Polarity select input | Logic high (>1.4V) = inverting output; logic low = noninverting output relative to VIN transitions. |
Key Features
| Feature | Design Value |
|---|---|
| 100V output capability | Enables direct interfacing to high-side logic or optocoupler inputs without external level-shifting circuitry. |
| Selectable 10x/40x input scaling | Allows precise threshold configuration across wide input ranges (3.5–24.5V or 14–98V) using standard resistor values. |
| Built-in hysteresis enable | Reduces external component count by allowing hysteresis activation with single-pin grounding (INH or INL). |
| ±1.4% threshold accuracy over temperature | Guarantees reliable fault detection across full industrial temperature range without calibration. |
| 7µA quiescent current | Supports ultra-low-power applications such as battery-backed monitoring and energy-harvesting systems. |
Applications
| Telecom Power Supervision | Automotive Battery Monitoring |
|---|---|
Use Scenario: Monitoring +48V DC distribution in central office equipment and remote radio units. IC Role / Device Role / Timing Role: Single-channel undervoltage lockout and overvoltage warning generator with 100V-rated output driving system reset logic. Use Value: Eliminates need for external high-voltage resistive dividers and discrete comparators, reducing BOM count and board area by >40%. | Use Scenario: Detecting 12V battery sag during cold-cranking or alternator failure in engine control modules. IC Role / Device Role / Timing Role: High-accuracy voltage supervisor with built-in hysteresis preventing chatter during slow-ramping battery recovery. Use Value: ±1.4% threshold accuracy ensures consistent trip points across –40°C to 125°C, meeting AEC-Q100 Grade 2 requirements. |
| Industrial 24V PLC I/O | Portable Medical Equipment |
Use Scenario: Validating 24V fieldbus power integrity in programmable logic controller backplanes. IC Role / Device Role / Timing Role: Dual-threshold (INH/INL) monitor configured for 20V UVLO and 28V OVLO with polarity-selected active-low reset. Use Value: 10x range mode enables 2.0V/2.8V reference inputs-compatible with standard 1% resistor networks and 2.4V REF output. | Use Scenario: Supervising lithium-ion battery pack voltage in handheld diagnostic devices. IC Role / Device Role / Timing Role: Micropower (7µA) voltage monitor enabling >5-year shelf life in standby mode before first use. Use Value: Internal 500kΩ pull-up eliminates need for external pull-up resistor, saving PCB space and leakage path uncertainty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326US29D3+T | Fixed 2.93V threshold, no adjustable range or hysteresis; 3.6V to 5.5V supply only; SOT23-3 package. | Only suitable for low-voltage (≤5.5V) rail monitoring; cannot replace LTC2965CDD#TRPBF in 24V+ systems. | Select only for cost-sensitive, single-threshold, low-voltage applications where external dividers are acceptable. |
| TLV809E29DBZR | Fixed 2.93V threshold, 1.6V to 6V supply, 350nA quiescent current, SOT23-3; no high-voltage output or range scaling. | Limited to sub-6V domains; lacks 100V output drive and internal reference; requires external bias for high-side monitoring. | Use only in ultra-low-power, low-voltage microcontroller reset circuits-not a functional substitute for high-voltage supervision. |
Compared with MAX6326US29D3+T and TLV809E29DBZR, the LTC2965CDD#TRPBF uniquely supports direct 100V input monitoring, user-configurable thresholds via resistor dividers, built-in hysteresis, and 100V output drive-making it irreplaceable in telecom, industrial, and automotive high-voltage supervision.
Availability
LTC2965CDD#TRPBF is available at Aetrix Electronics and suitable for telecom power supervision, automotive battery monitoring, and industrial 24V PLC I/O requiring stable component supply and long-term production continuity.
Supply support for LTC2965CDD#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 LTC2965 belongs to Analog Devices' precision voltage supervisor product line, designed specifically for high-voltage, micropower, and thermally robust monitoring in harsh environments including telecom infrastructure and automotive under-hood applications.
FAQ
What is the maximum input voltage the LTC2965CDD#TRPBF can monitor?
The LTC2965CDD#TRPBF supports a VIN monitor range up to 98V when configured in 40x mode, with absolute maximum input rating of 140V. Its internal high-value resistive divider enables direct connection to 24V, 48V, and 96V rails without external attenuation components. Operation remains stable across the full 3.5V to 100V operating supply range.
How does the RS pin affect threshold configuration on the LTC2965CDD#TRPBF?
The RS pin on the LTC2965CDD#TRPBF selects between two internal resistive divider scaling factors: logic low (GND) enables 10x scaling (3.5–24.5V monitor range), and logic high (REF or >1.4V) enables 40x scaling (14–98V range). This determines how INH and INL voltages map to actual VIN thresholds: VIN(RISE) = RANGE × INH, VIN(FALL) = RANGE × INL.
Can the LTC2965CDD#TRPBF generate hysteresis without external resistors?
Yes. The LTC2965CDD#TRPBF supports built-in hysteresis by grounding either INH (enabling rising-edge hysteresis) or INL (enabling falling-edge hysteresis). At 10x range, this yields 220mV VIN-referred hysteresis; at 40x, it yields 880mV. This eliminates the need for external hysteresis resistors while maintaining precise threshold control.
What is the function of the PS pin on the LTC2965CDD#TRPBF?
The PS (Polarity Select) pin on the LTC2965CDD#TRPBF configures output behavior: connecting PS to GND makes OUT noninverting (OUT goes low when VIN falls below INL), while connecting PS to REF or >1.4V makes OUT inverting (OUT goes low when VIN rises above INH). This allows flexible undervoltage or overvoltage detection with identical hardware.
Does the LTC2965CDD#TRPBF require an external pull-up resistor on the OUT pin?
No. The LTC2965CDD#TRPBF includes a 500kΩ internal pull-up resistor to an internally regulated supply (3.5–5V), eliminating the need for an external pull-up in most applications. However, an external pull-up to a higher voltage (up to 100V) is supported and recommended when interfacing with high-side logic or optocouplers requiring faster rise times or higher drive levels.
LTC2965CDD#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Monitor
- Number of Voltages Monitored:
- 1
- 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:
- 8-DFN (3x3)
LTC2965CDD#TRPBF FAQ
1.How can I place an order for LTC2965CDD#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2965CDD#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 LTC2965CDD#TRPBF reliable?
The price and inventory of LTC2965CDD#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2965CDD#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2965CDD#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2965CDD#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2965CDD#TRPBF?
LTC2965CDD#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2965CDD#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 LTC2965CDD#TRPBF?
For technical support, including LTC2965CDD#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2965CDD#TRPBF requirements.
6.How does Aetrix verify that LTC2965CDD#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2965CDD#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 LTC2965CDD#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2965CDD#TRPBF?
All LTC2965CDD#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2965CDD#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 LTC2965CDD#TRPBF part is unused and in its original packaging.
Return procedure for LTC2965CDD#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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