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Analog Devices Inc. LTC2965HMS#TRPBF
- Part No.:
- LTC2965HMS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2965HMS#TRPBF.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,404
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Product details
Overview
LTC2965HMS#TRPBF from Analog Devices is a micropower, high-voltage single-channel voltage monitor IC designed for precise undervoltage/overvoltage detection in systems with supply rails up to 100V. It features internal 10×/40× resistive dividers, ±1.4% threshold accuracy over temperature, 7µA quiescent current, and a 100V-rated open-drain output with integrated 500kΩ pull-up. It is used in automotive power rail supervision, telecom DC-DC monitoring, and industrial battery management.
For engineers reviewing the LTC2965HMS#TRPBF datasheet, LTC2965HMS#TRPBF pinout, LTC2965HMS#TRPBF application, or LTC2965HMS#TRPBF equivalent, key selection criteria include VIN monitor range (3.5–98V), built-in hysteresis configuration (INH/INL grounding), polarity selection (PS pin), RS range scaling (10x/40x), and MSOP-16 package thermal performance (θJA = 120°C/W).
Technical Context
The LTC2965HMS#TRPBF implements a high-impedance voltage sensing path via internal 70MΩ/200kΩ resistive dividers, enabling direct 100V input monitoring with sub-7µA supply current. Its dual comparator reference inputs (INH, INL) interface with external resistive dividers biased from a 2.402V buffered REF output, allowing independent rising/falling threshold programming.
Threshold scaling is controlled by the RS pin (GND = 10×, REF = 40×), while polarity inversion is selected via PS (GND = noninverting, REF = inverting). Built-in hysteresis (±14–30mV at INH/INL, scaled to VIN) is activated by grounding either INH or INL - not both - to prevent oscillation when VINL > VINH.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Operating Range | 3.5V to 100V - supports direct monitoring of 12V, 24V, 48V, and 96V industrial/automotive rails without external attenuation. |
| Quiescent Current | 7µA typical at 100V - enables multi-year battery life in portable and remote sensor applications. |
| Threshold Accuracy | ±1.4% max over –40°C to +125°C - ensures reliable trip points across extended automotive and industrial temperature ranges. |
| Output Voltage Rating | 100V absolute max on OUT pin - allows direct connection to high-side supplies up to 98V with external pull-up. |
| Internal Reference | 2.402V ±12mV (–40°C to +125°C) - provides stable bias for precision external resistor networks setting INH/INL thresholds. |
| Propagation Delay | 40–80µs (10× range, 10% overdrive) - enables fast fault response in safety-critical power sequencing and hot-swap circuits. |
| Package | 16-Lead MSOP (H-grade: –40°C to +125°C) - offers enhanced thermal reliability vs. DFN for high-power-density designs. |
Pinout & Package
Package: 16-Lead Plastic MSOP, exposed pad optional, rated for –40°C to +125°C operation (H-grade). Thermal resistance θJA = 120°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-voltage monitor input | Connects to supply rail (3.5–98V); internal 70MΩ divider enables micropower sensing without external components. |
| REF | Buffered 2.402V reference output | Provides low-noise, temperature-stable bias for external INH/INL resistor networks; supports ≤1nF bypass capacitance. |
| INH | High threshold reference input | Sets rising VIN threshold (VIN_RISE = RANGE × INH); ground to enable rising-edge hysteresis. |
| INL | Low threshold reference input | Sets falling VIN threshold (VIN_FALL = RANGE × INL); ground to enable falling-edge hysteresis. |
| OUT | Open-drain status output | 100V-rated output with internal 500kΩ pull-up to VINT (3.5–5V); sinks current when fault condition active. |
| GND | Device ground reference | Return path for REF, INH, INL, RS, PS; exposed pad may be left floating or connected to PCB GND. |
| RS | Range select input | GND = 10× scaling (3.5–24.5V VIN range); REF = 40× scaling (14–98V VIN range). |
| PS | Polarity select input | GND = noninverting (OUT low on undervoltage); REF = inverting (OUT low on overvoltage). |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable 10×/40× internal scaling | Enables accurate threshold setting across 3.5–98V VIN range using low-voltage, low-tolerance external resistors. |
| Built-in hysteresis activation | Grounding INH or INL adds fixed 220mV (10×) or 880mV (40×) hysteresis to VIN thresholds - eliminates need for external hysteresis circuitry. |
| 100V-rated open-drain output | Supports direct interfacing to high-side logic or microcontroller I/O without level-shifting, reducing BOM count and layout complexity. |
| ±1.4% threshold accuracy over temp | Guarantees consistent trip points in automotive under-hood and industrial control cabinet environments without calibration. |
| 7µA quiescent current at 100V | Minimizes standby power loss in always-on battery-backed systems such as telematics, security sensors, and remote monitoring nodes. |
Applications
| Automotive Power Rail Supervision | Telecom DC-DC Converter Monitoring |
|---|---|
Use Scenario: Monitoring 12V/24V vehicle battery voltage during cold cranking and load dump events. IC Role / Device Role / Timing Role: Voltage monitor IC detecting undervoltage (e.g., <10.5V) and overvoltage (e.g., >16V) conditions on main battery rail. Use Value: Prevents ECU reset or data corruption by asserting fault signal before critical brownout; 100V rating withstands ISO 7637-2 pulse 5a (120V transient). |
Use Scenario: Supervising output of isolated 48V telecom DC-DC converters powering base station radios. IC Role / Device Role / Timing Role: Single-channel supervisor verifying regulated 48V output remains within ±5% tolerance (45.6–50.4V) during line/load transients. Use Value: Enables fast shutdown (<100µs) of downstream RF stages upon overvoltage, protecting expensive GaN power amplifiers from damage. |
| Industrial Battery Management | Hot-Swap Controller Interface |
Use Scenario: Detecting end-of-discharge in 24V/48V lead-acid or LiFePO₄ backup batteries for PLCs and HMIs. IC Role / Device Role / Timing Role: Precision undervoltage lockout (UVLO) with hysteresis set to 21.6V/22.2V (10× range) to avoid chatter near cutoff voltage. Use Value: Extends usable battery capacity by 3–5% versus fixed-threshold comparators; ±1.4% accuracy ensures consistent cutoff across temperature extremes. |
Use Scenario: Providing fault signaling to hot-swap controller ICs during inrush current limiting and steady-state operation. IC Role / Device Role / Timing Role: High-voltage status monitor interfacing between 12V/48V backplane and 3.3V/5V hot-swap controller logic. Use Value: Eliminates optocoupler or discrete level-shifter; 100V OUT rating tolerates bus transients up to 140V (ABS MAX), improving system robustness. |
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, SOT-23-3, 1.6µA IQ, no adjustable hysteresis or range scaling | Only suitable for low-voltage (≤6V) rail monitoring; lacks high-voltage capability and programmability | Select only for cost-sensitive, single-threshold 3.3V/5V systems where external resistor networks are undesirable. |
| TPS389033QDBVRQ1 | 3.3V fixed threshold, SOT-23-5, 350nA IQ, AEC-Q100 qualified, no high-voltage input | Designed for automotive MCU core voltage supervision; requires external resistive divider for >6V rails | Prefer for ASIL-B functional safety applications with strict low-IQ requirements, but requires additional components for 12V+ monitoring. |
Compared with LTC2965HMS#TRPBF, MAX6326US29D3+T and TPS389033QDBVRQ1 lack integrated high-voltage scaling, programmable hysteresis, and 100V output capability - making them unsuitable for direct replacement in 24V/48V/96V industrial or automotive monitoring without redesign.
Availability
LTC2965HMS#TRPBF is available at Aetrix Electronics and suitable for automotive power rail supervision, telecom DC-DC converter monitoring, and industrial battery management requiring stable component supply across extended temperature ranges.
Supply support for LTC2965HMS#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 digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2965 belongs to Linear's precision voltage supervisor product line, engineered for high-voltage, low-power, and high-accuracy monitoring in harsh environments - especially where wide input range, minimal board space, and guaranteed operation from –40°C to +125°C are mandatory.
FAQ
What is the maximum input voltage the LTC2965HMS#TRPBF can monitor?
The LTC2965HMS#TRPBF supports a VIN monitor range of 3.5V to 98V with ±1.4% threshold accuracy. Its absolute maximum input rating is 140V, and the output pin (OUT) is rated for up to 100V. This makes LTC2965HMS#TRPBF suitable for direct monitoring of 12V, 24V, 48V, and 96V systems without external attenuation or level-shifting circuitry.
How does the RS pin configure the LTC2965HMS#TRPBF's voltage scaling?
The RS pin selects the internal resistive divider scaling factor for the LTC2965HMS#TRPBF: connecting RS to GND configures 10× scaling (3.5–24.5V VIN range), while connecting RS to REF configures 40× scaling (14–98V VIN range). This allows precise threshold programming across two distinct high-voltage bands using the same INH/INL reference voltages.
Can the LTC2965HMS#TRPBF generate hysteresis without external components?
Yes - the LTC2965HMS#TRPBF supports built-in hysteresis activation by grounding either INH (for rising-edge hysteresis) or INL (for falling-edge hysteresis). At 10× range, this yields 220mV hysteresis referred to VIN; at 40× range, it yields 880mV. This eliminates the need for external positive feedback resistors in many applications.
What is the function of the PS pin on the LTC2965HMS#TRPBF?
The PS (Polarity Select) pin determines the logic polarity of the LTC2965HMS#TRPBF's OUT signal: connecting PS to GND configures noninverting operation (OUT goes low when VIN falls below INL threshold), while connecting PS to REF configures inverting operation (OUT goes low when VIN rises above INH threshold). This enables flexible use for both undervoltage and overvoltage detection.
Does the LTC2965HMS#TRPBF require an external reference voltage?
No - the LTC2965HMS#TRPBF integrates a buffered 2.402V reference (REF pin) with ±12mV accuracy over –40°C to +125°C. This internal reference is used to bias external resistor networks that set INH and INL thresholds, eliminating the need for an external reference in most designs. External references (e.g., LT6656) may be added only for ultra-high-accuracy applications.
LTC2965HMS#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width)
- 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:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP
LTC2965HMS#TRPBF FAQ
1.How can I place an order for LTC2965HMS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2965HMS#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 LTC2965HMS#TRPBF reliable?
The price and inventory of LTC2965HMS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2965HMS#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2965HMS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2965HMS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2965HMS#TRPBF?
LTC2965HMS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2965HMS#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 LTC2965HMS#TRPBF?
For technical support, including LTC2965HMS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2965HMS#TRPBF requirements.
6.How does Aetrix verify that LTC2965HMS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2965HMS#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 LTC2965HMS#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2965HMS#TRPBF?
All LTC2965HMS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2965HMS#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 LTC2965HMS#TRPBF part is unused and in its original packaging.
Return procedure for LTC2965HMS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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