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Analog Devices Inc. LTC2965IMS#PBF
- Part No.:
- LTC2965IMS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2965IMS#PBF.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:400
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Product details
Overview
LTC2965IMS#PBF from Analog Devices is a 100V-rated micropower single-channel voltage monitor IC with internal high-value resistive dividers, ±1.4% threshold accuracy over temperature, 7µA quiescent current, and selectable 10x/40x input scaling for monitoring ranges from 3.5V to 98V. It serves as a compact, low-power supply supervision device in high-voltage industrial power rails.
For engineers reviewing the LTC2965IMS#PBF datasheet, LTC2965IMS#PBF pinout, LTC2965IMS#PBF application, or LTC2965IMS#PBF equivalent, this page delivers verified specifications, MSOP-16 package details, polarity/range configuration logic, built-in hysteresis behavior, and real-world threshold design guidance - all grounded in Linear Technology's official documentation.
Technical Context
The LTC2965IMS#PBF implements a high-voltage comparator architecture with an internally generated reference (2.402V), dual comparator reference inputs (INH/INL), and a 500kΩ internal pull-up on the 100V-capable OUT pin. Its 16-pin MSOP package integrates range selection (RS) and polarity selection (PS) pins to configure 10x or 40x scaling and inverting/noninverting output behavior relative to VIN.
Thresholds are set by external resistive dividers biased from REF, with hysteresis enabled by grounding either INH or INL - yielding fixed VIN-referred hysteresis of 220mV (10x) or 880mV (40x). The device enters undervoltage lockout (UVLO) below 3V at VIN and guarantees low-state output down to 1.25V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage Range | 3.5V to 100V input supply - supports direct monitoring of telecom, automotive, and industrial DC bus voltages without external level-shifting. |
| Quiescent Current | 7µA typical at 100V - enables battery-backed or energy-harvesting applications with multi-year runtime. |
| Threshold Accuracy | ±1.4% max over –40°C to +85°C - ensures reliable trip points across extended industrial temperature range. |
| Output Rating | 100V absolute max on OUT pin - allows direct connection to high-side rails up to 98V with external pull-up. |
| Internal Reference | 2.402V ±0.012V - stable, buffered reference used to bias external resistor networks for precise INH/INL threshold setting. |
| Package | 16-Lead Plastic MSOP - provides ≥0.79mm creepage between high- and low-voltage pins for >30V isolation compliance. |
| Propagation Delay | 40–80µs (10x mode) - fast enough for transient detection in power supply sequencing and fault response. |
Pinout & Package
Package: 16-Lead Plastic MSOP (3.0mm × 4.9mm), exposed pad optional, rated for –40°C to +85°C operating ambient temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-voltage monitor input | Connects to monitored rail (3.5–98V); internal 70MΩ divider scales voltage to comparator; UVLO triggers below 3V. |
| REF | Buffered reference output | 2.402V source for biasing external INH/INL dividers; supports ≤1nF bypass directly; drives resistive networks only. |
| INH | High-threshold reference input | Sets rising-edge trip point when scaled by RS (10x/40x); grounding enables built-in hysteresis on falling edge. |
| INL | Low-threshold reference input | Sets falling-edge trip point when scaled by RS; grounding enables built-in hysteresis on rising edge; must not exceed INH unless hysteresis enabled. |
| OUT | Open-drain high-voltage output | 100V-rated active pull-down + 500kΩ internal pull-up to ~3.5–5V internal supply; polarity controlled by PS pin. |
| RS | Range select input | GND = 10x (3.5–24.5V range), REF = 40x (14–98V range); determines scaling factor applied to INH/INL voltages. |
| PS | Polarity select input | GND = noninverting (OUT low on undervoltage), REF = inverting (OUT low on overvoltage); configures fault logic polarity. |
| GND | Device ground reference | Return path for REF, INH, INL, RS, PS; exposed pad may be left floating or connected to PCB GND. |
Key Features
| Feature | Design Value |
|---|---|
| 100V output rating with internal 500kΩ pull-up | Enables direct interface to high-side rails up to 98V without external level-shifters or MOSFET drivers. |
| Selectable 10x / 40x internal scaling | Allows precise threshold programming across two distinct voltage bands while keeping INH/INL within safe 0.35–2.45V common-mode range. |
| Built-in hysteresis via INH or INL grounding | Eliminates need for external hysteresis resistors - provides fixed 220mV (10x) or 880mV (40x) VIN-referred hysteresis with one pin tied to GND. |
| ±1.4% threshold accuracy over full temperature range | Reduces calibration overhead in industrial systems where thermal drift would otherwise require software compensation. |
| 7µA quiescent current at 100V | Supports always-on monitoring in battery-powered equipment with negligible impact on standby lifetime. |
Applications
| Telecom Power Supervision | Industrial DC Bus Monitoring |
|---|---|
|
Use Scenario: Monitoring –48V or +48V telecom distribution rails for brownout/overvoltage events in base station power supplies. IC Role / Device Role / Timing Role: Single-channel high-voltage supervisor providing fail-safe enable/disable signaling to PMBus controllers or FPGA configuration logic. Use Value: Eliminates need for discrete resistor dividers and op-amp comparators - reduces BOM count by 5+ components and PCB area by >30mm². |
Use Scenario: Detecting undervoltage on 24V/48V PLC I/O power rails during factory automation equipment startup and fault recovery. IC Role / Device Role / Timing Role: Standalone voltage monitor triggering watchdog reset or safety relay deactivation within 80µs of threshold breach. Use Value: Guaranteed UVLO behavior down to 1.25V ensures deterministic output state even during severe input sag - no latch-up risk. |
| Automotive Battery Management | Hot-Swap Controller Interface |
|
Use Scenario: Supervising 12V/24V vehicle battery voltage in ADAS ECUs to prevent operation below cold-cranking thresholds. IC Role / Device Role / Timing Role: Micropower supervisor enabling wake-on-voltage-dip functionality while drawing <10µA from battery in sleep mode. Use Value: 7µA IQ extends battery hold-up time beyond 10 years in always-connected telematics modules. |
Use Scenario: Providing fault status to hot-swap controllers during live insertion of 48V server backplane cards subject to 140V transients. IC Role / Device Role / Timing Role: High-voltage transient-tolerant monitor that remains functional despite ringing-induced spikes up to 140V on VIN. Use Value: Absolute maximum rating margin (140V vs 98V operating) prevents latch-up or damage during hot-swap events without external clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UT29D3+ | 3.08V fixed threshold, SOT-23-3, 1.6µA IQ, no adjustable range or hysteresis | Only suitable for fixed 3.3V rail monitoring; lacks programmability and high-voltage capability | Choose only for ultra-low-power, single-threshold 3.3V applications where size and cost outweigh flexibility needs. |
| TPS3897ADBVR | Adjustable threshold (0.4–5.8V), 6-pin SOT-23, 1.5µA IQ, 6V max VIN, no high-voltage output | Requires external level-shifting for >6V rails; cannot drive 100V loads directly | Select when monitoring sub-6V supplies with tight accuracy (<0.5%) and minimal footprint - not viable for 24V+ systems. |
Compared with MAX6326UT29D3+ and TPS3897ADBVR, the LTC2965IMS#PBF uniquely combines 100V output drive, 3.5–98V monitoring range, and user-configurable hysteresis - making it the only option capable of replacing discrete high-voltage supervisor circuits without redesigning the signal chain.
Availability
LTC2965IMS#PBF is available at Aetrix Electronics and suitable for telecom power supervision, industrial DC bus monitoring, automotive battery management, and hot-swap controller interface applications requiring stable component supply across extended temperature and high-voltage operating conditions.
Supply support for LTC2965IMS#PBF 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) designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The LTC2965 belongs to Linear's high-voltage supervisor product line, engineered specifically for compact, low-power monitoring of DC rails from 3.5V to 98V in space-constrained and thermally harsh environments.
FAQ
What is the maximum input voltage the LTC2965IMS#PBF can safely monitor?
The LTC2965IMS#PBF supports a VIN monitor range of 3.5V to 98V under normal operation, with an absolute maximum rating of 140V. It is designed to withstand transient overvoltages up to 140V on the VIN pin without damage, making it suitable for telecom and industrial applications with high-energy surges.
How does the RS pin affect threshold configuration in the LTC2965IMS#PBF?
The RS pin selects the internal resistive divider scaling factor: GND sets 10x (3.5–24.5V range), while connecting to REF sets 40x (14–98V range). This determines how INH and INL voltages translate to actual VIN thresholds - e.g., 2.0V on INH yields 20V trip point at 10x, or 80V at 40x - ensuring INH/INL remain within the 0.35–2.45V common-mode window.
Can the LTC2965IMS#PBF generate hysteresis without external resistors?
Yes - the LTC2965IMS#PBF provides built-in hysteresis by grounding either INH or INL. Grounding INH enables rising-edge hysteresis (VIN(RISE) = RANGE × INL + VHYS), while grounding INL enables falling-edge hysteresis (VIN(FALL) = RANGE × INH – VHYS), delivering fixed 220mV (10x) or 880mV (40x) VIN-referred hysteresis without external components.
What is the role of the PS pin in the LTC2965IMS#PBF?
The PS pin configures output polarity: GND yields noninverting behavior (OUT goes low when VIN falls below INL threshold), while connection to REF or >1.4V yields inverting behavior (OUT goes low when VIN rises above INH threshold). This allows the same LTC2965IMS#PBF to serve both undervoltage and overvoltage detection roles in a single design.
Does the LTC2965IMS#PBF require an external pull-up resistor on the OUT pin?
No - the LTC2965IMS#PBF includes a 500kΩ internal pull-up to an internally regulated supply (3.5–5V). An external pull-up is optional and used only when driving higher-voltage logic (up to 100V) or faster rise times; the internal pull-up suffices for standard 3.3V/5V microcontroller interfaces and minimizes component count.
LTC2965IMS#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP
LTC2965IMS#PBF FAQ
1.How can I place an order for LTC2965IMS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2965IMS#PBF 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 LTC2965IMS#PBF reliable?
The price and inventory of LTC2965IMS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2965IMS#PBF is usually 5 days.
3.What payment methods are accepted for LTC2965IMS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2965IMS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2965IMS#PBF?
LTC2965IMS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2965IMS#PBF 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 LTC2965IMS#PBF?
For technical support, including LTC2965IMS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2965IMS#PBF requirements.
6.How does Aetrix verify that LTC2965IMS#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2965IMS#PBF 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 LTC2965IMS#PBF meets industry standards.
7.What is the process for return or replacement of LTC2965IMS#PBF?
All LTC2965IMS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2965IMS#PBF, 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 LTC2965IMS#PBF part is unused and in its original packaging.
Return procedure for LTC2965IMS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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