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Analog Devices Inc. LTC2919HMS-2.5#TRPBF
- Part No.:
- LTC2919HMS-2.5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2919HMS-2.5#TRPBF.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,662
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Product details
Overview
LTC2919HMS-2.5#TRPBF from Analog Devices is a precision triple-input voltage supervisor IC for automotive and industrial power monitoring, featuring two adjustable 0.5V-threshold inputs (±1.5% accuracy over –40°C to +125°C), a fixed 2.5V supply UVLO monitor, open-drain RST/OUT1/OUT2 outputs, and pin-selectable polarity for positive/negative UV/OV detection in core logic and I/O rail supervision.
For engineers reviewing the LTC2919HMS-2.5#TRPBF datasheet, LTC2919HMS-2.5#TRPBF pinout, LTC2919HMS-2.5#TRPBF application, or LTC2919HMS-2.5#TRPBF equivalent, this page delivers verified specifications, validated pin functions, confirmed automotive-grade thermal performance, and real-world reset timeout configuration options - all aligned with Rev. A datasheet and AEC-Q100 qualification.
Technical Context
The LTC2919HMS-2.5#TRPBF implements dual independent comparators with 0.5V nominal thresholds and a third VCC-based UVLO comparator set to 2.175V (–10% of 2.5V), each with guaranteed ±1.5% threshold accuracy across –40°C to +125°C. Its three-state SEL pin configures ADJ1/ADJ2 polarity combinations without external components, enabling flexible UV/OV monitoring of positive, negative, or mixed-rail systems.
Reset behavior is governed by a configurable timeout: internal 200ms timer (TMR = GND), external capacitor (9 ms/nF), or disabled (TMR = VCC) for comparator-mode direct output. Glitch rejection is achieved via propagation delay filtering (50–800 µs depending on overdrive) and no built-in hysteresis outside comparator mode - preserving threshold accuracy while supporting external RC filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC UVLO Threshold | 2.175V (–10% of 2.5V), accurate over full –40°C to +125°C range for reliable 2.5V supply monitoring |
| ADJ Input Threshold | 495–505 mV (±1.5% tolerance), tight accuracy enables precise UV/OV trip points for 5%–10% supply tolerances |
| Quiescent Current | 50 µA typical at 2.5V, enabling micropower operation in always-on automotive and industrial monitoring circuits |
| Reset Timeout Options | Internal 200ms (TMR = GND), external 15–27ms @ 2.2nF (TMR to GND), or disabled (TMR = VCC) for immediate response |
| Operating Temperature | –40°C to +125°C (H-grade), qualified per AEC-Q100 Grade 1 for under-hood and industrial control applications |
| Output Type | Open-drain RST, OUT1, OUT2 with guaranteed low output (≤0.15V @ 2.5mA sink) down to VCC = 0.5V for robust power-up sequencing |
| Reference Output | 1.000V buffered REF (±10mV over temp), capable of sourcing/sinking ±1mA for negative-supply offset generation |
Pinout & Package
Package: 10-Lead Plastic MSOP (3mm × 3mm), exposed pad optional, rated for TJMAX = 150°C and θJA = 120°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SEL (Pin 1) | Three-state polarity select input | Determines ADJ1/ADJ2 polarity: VCC = both positive, OPEN = ADJ1+ / ADJ2–, GND = both negative - no external components needed |
| VCC (Pin 2) | Power supply input with shunt regulator | Accepts 0.5–6V directly; >6V requires series resistor due to integrated 6.5V shunt regulator (ICC ≤ 10mA) |
| OUT1 (Pin 3) | Open-drain status output for ADJ1 | Asserts low when ADJ1 violates configured UV/OV condition; requires external pull-up; supports level-shifting above VCC |
| OUT2 (Pin 4) | Open-drain status output for ADJ2 | Asserts low when ADJ2 violates configured UV/OV condition; independent of OUT1; same pull-up requirements |
| RST (Pin 5) | Open-drain inverted reset output | Asserts low if any monitored input (ADJ1, ADJ2, or VCC) fails; held low for timeout after all inputs recover |
| GND (Pin 6) | Device ground reference | Primary return path; exposed pad (DFN only) may be tied to GND for improved thermal performance |
| REF (Pin 7) | Buffered 1V reference output | Stable 1.000V ±10mV source/sink (±1mA); drives up to 1000pF; used for negative-rail offset in OV/UV detection |
| TMR (Pin 8) | Reset timeout control terminal | Selects timeout mode: GND = 200ms internal, cap-to-GND = 9ms/nF, VCC = disabled (comparator mode), OPEN ≈ 400µs |
| ADJ2 (Pin 9) | Adjustable voltage input 2 | 0.5V threshold comparator input; polarity set by SEL; tie to GND if unused (with SEL = GND or OPEN) |
| ADJ1 (Pin 10) | Adjustable voltage input 1 | 0.5V threshold comparator input; polarity set by SEL; tie to REF if unused (with SEL = VCC or OPEN) |
Key Features
| Feature | Design Value |
|---|---|
| Polarity-selectable dual inputs | SEL pin configures ADJ1/ADJ2 as (+UV/–OV), (+UV/–UV), or (–UV/+OV) - eliminates need for external polarity-reversal circuitry |
| Triple independent monitoring | Simultaneous supervision of two adjustable rails + fixed 2.5V VCC UVLO - reduces BOM count vs discrete supervisors |
| Guaranteed low-voltage operation | Outputs remain asserted low down to VCC = 0.5V, ensuring deterministic reset during brownout and power-up sequencing |
| Glitch-immune timing architecture | Propagation delay filtering (50–800 µs) + programmable timeout prevent false resets from transients without degrading DC accuracy |
| AEC-Q100 qualified | H-grade (–40°C to +125°C) qualification enables use in automotive engine control, ADAS, and infotainment power domains |
| Space-constrained packaging | 10-lead MSOP (3mm × 3mm) footprint supports high-density PCB layouts in servers, telecom, and industrial controllers |
Applications
| Automotive Power Rail Monitoring | Industrial PLC I/O Module Supervision |
|---|---|
|
Use Scenario: Monitoring 12V battery-derived 5V and 3.3V rails alongside microcontroller VCC in engine control units. IC Role / Device Role / Timing Role: LTC2919HMS-2.5#TRPBF acts as triple-rail supervisor with SEL-configured polarity to detect 5V undervoltage and 3.3V overvoltage simultaneously, triggering RST after 200ms internal timeout. Use Value: Eliminates need for three separate supervisors; AEC-Q100 qualification ensures reliability under temperature cycling and vibration stress. |
Use Scenario: Supervising isolated 24V DC input and internal 5V logic supply in programmable logic controller backplanes. IC Role / Device Role / Timing Role: LTC2919HMS-2.5#TRPBF monitors 24V via resistive divider on ADJ1 and 5V on ADJ2, using REF to offset negative sensing; RST holds CPU in reset until both rails stabilize. Use Value: Single-chip solution replaces dual comparator + timer + reference; 50 µA quiescent current extends backup battery life during mains failure. |
| Server Core Voltage Sequencing | Medical Imaging Power Integrity |
|
Use Scenario: Coordinating startup of CPU core (0.85V) and memory I/O (1.2V) supplies in rack-mounted servers. IC Role / Device Role / Timing Role: LTC2919HMS-2.5#TRPBF uses external capacitors on TMR to set distinct 20ms timeouts per rail, ensuring proper sequencing before releasing RST to motherboard CPLD. Use Value: Programmable timeout avoids fixed-delay ICs requiring layout changes for different platform voltages; ±1.5% threshold accuracy prevents nuisance resets during load transients. |
Use Scenario: Verifying stability of ±15V analog front-end supplies and 3.3V digital logic in MRI signal conditioning modules. IC Role / Device Role / Timing Role: LTC2919HMS-2.5#TRPBF configures ADJ1 for –15V UV (via REF offset) and ADJ2 for +15V OV, with VCC monitoring 3.3V - all three faults trigger common RST. Use Value: Pin-selectable polarity enables single-part support for bipolar analog systems; buffered REF removes need for external op-amp offset circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | Single 3.3V fixed UVLO; no adjustable inputs, no polarity selection, no REF output; 1.8 µA IQ | Only monitors one rail; unsuitable for dual/mixed-polarity or triple-monitoring use cases | Choose only for simple 3.3V-only systems where size and ultra-low IQ outweigh flexibility needs |
| MAX6326LT29D3+T | Fixed 2.93V UVLO with manual reset; no OV detection, no adjustable inputs, no temperature grade beyond –40°C to +85°C | Lacks dual-input capability, polarity control, and automotive H-grade rating | Select only for cost-sensitive non-automotive applications requiring basic 2.93V UVLO with manual reset |
Compared with TPS3808G33DBVR and MAX6326LT29D3+T, the LTC2919HMS-2.5#TRPBF provides unique triple-input supervision with polarity configurability, buffered reference, and AEC-Q100 H-grade operation - making it irreplaceable for complex multi-rail automotive and industrial monitoring where accuracy, flexibility, and qualification are mandatory.
Availability
LTC2919HMS-2.5#TRPBF is available at Aetrix Electronics and suitable for automotive ECU power management, industrial PLC I/O supervision, server core voltage sequencing, and medical imaging power integrity applications requiring stable component supply and long-term lifecycle support.
Supply support for LTC2919HMS-2.5#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets with precision power management solutions.
The LTC2919 product line delivers highly accurate, configurable, and space-efficient voltage supervisors for demanding power integrity applications - designed specifically for automotive-grade reliability, multi-rail flexibility, and minimal external component count.
FAQ
What is the operating temperature range for the LTC2919HMS-2.5#TRPBF?
The LTC2919HMS-2.5#TRPBF is rated for –40°C to +125°C operation and qualified per AEC-Q100 Grade 1, making it suitable for under-hood automotive environments and high-temperature industrial control cabinets. This H-grade specification is explicitly defined in the datasheet's ORDER INFORMATION table and confirmed in Absolute Maximum Ratings.
How does the SEL pin configure input polarity on the LTC2919HMS-2.5#TRPBF?
The SEL pin on the LTC2919HMS-2.5#TRPBF selects ADJ1/ADJ2 polarity via three states: connected to VCC sets both inputs to positive polarity (+UV/–OV), left open sets ADJ1 positive and ADJ2 negative, and connected to GND sets both negative (–UV/+OV). This is documented in Table 1 of the datasheet and requires no external components.
Can the LTC2919HMS-2.5#TRPBF monitor negative voltages?
Yes - the LTC2919HMS-2.5#TRPBF monitors negative supplies using its buffered 1V REF output to offset the ADJ inputs. When SEL is set to GND or OPEN, ADJ1/ADJ2 operate in negative polarity mode, asserting OUT1/OUT2 low when the monitored negative voltage exceeds the 0.5V threshold (i.e., becomes less negative than required).
What reset timeout options are supported by the LTC2919HMS-2.5#TRPBF?
The LTC2919HMS-2.5#TRPBF supports three reset timeout modes: internal 200ms (TMR tied to GND), external capacitor-based (9 ms/nF with CTMR to GND), or disabled (TMR tied to VCC for comparator-mode direct output). Typical external values include 2.2nF for 20ms timeout, as shown in Figure 8 of the datasheet.
Is the LTC2919HMS-2.5#TRPBF pin-compatible with other LTC2919 variants?
Yes - all LTC2919 variants (e.g., LTC2919HMS-3.3#TRPBF, LTC2919IDDB-2.5#TRPBF) share identical 10-pin MSOP/DFN footprints and pinouts. The only differences are UVLO threshold (2.5V/3.3V/5V), temperature grade (H/I/C), and package type (MSOP vs DFN); electrical pin functions and timing behavior are fully consistent across the family.
LTC2919HMS-2.5#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 2.213V, Adj, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
LTC2919HMS-2.5#TRPBF FAQ
1.How can I place an order for LTC2919HMS-2.5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2919HMS-2.5#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 LTC2919HMS-2.5#TRPBF reliable?
The price and inventory of LTC2919HMS-2.5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2919HMS-2.5#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2919HMS-2.5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2919HMS-2.5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2919HMS-2.5#TRPBF?
LTC2919HMS-2.5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2919HMS-2.5#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 LTC2919HMS-2.5#TRPBF?
For technical support, including LTC2919HMS-2.5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2919HMS-2.5#TRPBF requirements.
6.How does Aetrix verify that LTC2919HMS-2.5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2919HMS-2.5#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 LTC2919HMS-2.5#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2919HMS-2.5#TRPBF?
All LTC2919HMS-2.5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2919HMS-2.5#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 LTC2919HMS-2.5#TRPBF part is unused and in its original packaging.
Return procedure for LTC2919HMS-2.5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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