My Inquiry
My Account
Analog Devices Inc. LTC2919HMS-5#TRPBF
- Part No.:
- LTC2919HMS-5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2919HMS-5#TRPBF.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,745
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2919HMS-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 –10% VCC UVLO monitor for 5V supplies, open-drain RST/OUT1/OUT2 outputs, and pin-selectable polarity for UV/OV detection of positive or negative rails.
For engineers reviewing the LTC2919HMS-5#TRPBF datasheet, LTC2919HMS-5#TRPBF pinout, LTC2919HMS-5#TRPBF application, or LTC2919HMS-5#TRPBF equivalent, this device supports high-reliability supply monitoring in systems requiring AEC-Q100 qualification, glitch-immune reset timing, buffered 1V reference for negative-rail offset, and flexible timeout configuration via TMR pin (internal 200ms, external capacitor, or disabled).
Technical Context
The LTC2919HMS-5#TRPBF implements dual independent comparators with user-configurable polarity (via three-state SEL pin) and a dedicated VCC UVLO comparator, all sharing a common 0.5V internal reference. Its architecture enables simultaneous monitoring of two adjustable supplies (e.g., +5V UV + –12V OV) plus a third fixed 5V supply via VCC UVLO at 4.50V (–10%).
Reset assertion logic requires all monitored inputs to be valid for the full timeout period before releasing RST; propagation delay is 50–800µs depending on overdrive, and glitch rejection is achieved through internal filtering-not hysteresis-except in comparator mode (TMR = VCC). The 1V buffered REF output sources/sinks ±1mA and drives up to 1000pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC UVLO Threshold | 4.50V (–10% of 5V), guaranteed over –40°C to +125°C; enables accurate third-supply monitoring without external components |
| ADJ Input Threshold Accuracy | ±1.5% over full temperature range; ensures reliable trip points for 5% tolerance supplies without nuisance resets |
| Quiescent Current | 50µA typical (H-grade), enabling micropower operation in always-on automotive subsystems |
| Reset Timeout Options | Internal 200ms (TMR = GND), external capacitor (9ms/nF), or disabled (TMR = VCC); eliminates need for external RC timing networks |
| Operating Temperature | –40°C to +125°C (H-grade), qualified per AEC-Q100 for under-hood and engine-control applications |
| Output Type | Open-drain RST, OUT1, OUT2; supports level-shifting, wired-OR, and pull-up to voltages > VCC (up to 7.5V) |
| Reference Output | 1.000V buffered REF (±10mV over temp), usable as offset for negative-rail monitoring or external ADC reference |
Pinout & Package
Package: 10-Lead Plastic MSOP (3mm × 3mm), exposed pad optional, rated for –40°C to +125°C operation.
| 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 required |
| VCC (Pin 2) | Power supply input / shunt regulator | Operates directly up to 6V; internal 6.5V shunt allows high-voltage operation (>6V) with series resistor; also serves as 5V UVLO monitor |
| OUT1 (Pin 3) | Open-drain output 1 | Asserts low when ADJ1 is invalid (UV for +polarity, OV for –polarity); requires external pull-up; compatible with 3.3V/5V logic |
| OUT2 (Pin 4) | Open-drain output 2 | Asserts low when ADJ2 is invalid; independent of OUT1; enables discrete fault indication per rail |
| RST (Pin 5) | Open-drain inverted reset output | Asserts low if any input (ADJ1, ADJ2, or VCC) is invalid; held low for full timeout after all inputs recover |
| GND (Pin 6) | Device ground reference | Return path for all internal circuits and REF output; must be low-impedance for accurate threshold tracking |
| REF (Pin 7) | Buffered 1V reference output | Provides stable offset for negative-rail monitoring (e.g., ADJx tied to –5V via divider to REF); ±1mA drive capability |
| TMR (Pin 8) | Reset timeout control | Selects timeout mode: GND = 200ms internal, cap-to-GND = 9ms/nF, VCC = comparator mode (no timeout), OPEN = ~400µs min |
| ADJ2 (Pin 9) | Adjustable 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 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 | Single SEL pin configures ADJ1/ADJ2 for +UV/+OV, +UV/–OV, or –UV/–OV detection - no external switches or logic |
| Accurate 5V supply monitoring | VCC UVLO at 4.50V (–10%) with ±0.3% hysteresis ensures robust brownout detection for 5V systems without external resistors |
| Glitch-immune timing architecture | Propagation delay filtering (50–800µs) + programmable timeout prevents false resets from load transients or noise spikes |
| Low-voltage output drive | RST/OUT1/OUT2 guaranteed low ≤0.15V at VCC = 3V and sink current ≤2.5mA - ensures clean logic-low during partial power-up |
| AEC-Q100 qualified H-grade | Rated for –40°C to +125°C junction temperature with 150°C max TJ; meets automotive reliability and qualification requirements |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Power Sequencing |
|---|---|
|
Use Scenario: Monitoring 5V microcontroller supply and –12V sensor bias rail in under-hood ECU with wide ambient temperature swings. IC Role / Device Role / Timing Role: LTC2919HMS-5#TRPBF acts as primary supervisor: VCC monitors 5V logic rail, ADJ1 monitors +5V via divider, ADJ2 monitors –12V using REF offset, SEL = OPEN for mixed-polarity detection. Use Value: Eliminates need for separate UV/OV ICs and external hysteresis networks; 200ms internal timeout ensures MCU reset holds through ignition transients. |
Use Scenario: Coordinating startup of 24V fieldbus interface and 3.3V FPGA core in modular PLC backplane with strict sequencing requirements. IC Role / Device Role / Timing Role: LTC2919HMS-5#TRPBF supervises 24V bus (via ADJ1 divider) and 3.3V FPGA rail (via ADJ2), with RST holding downstream logic in reset until both are stable. Use Value: Pin-selectable polarity avoids polarity-inversion op-amps; open-drain outputs enable wired-OR with other supervisors in distributed architecture. |
| Telecom Base Station DC-DC Monitoring | Medical Imaging Power Integrity |
|
Use Scenario: Detecting undervoltage on +48V telecom supply and overvoltage on –48V bias rail in redundant power system. IC Role / Device Role / Timing Role: LTC2919HMS-5#TRPBF configured with SEL = GND to monitor both rails in negative polarity mode: ADJ1 for +48V OV, ADJ2 for –48V UV. Use Value: ±1.5% threshold accuracy guarantees detection within 0.72V margin - tighter than standard 2% supervisors - critical for fault isolation. |
Use Scenario: Ensuring integrity of ±15V analog front-end supplies in MRI gradient amplifier module where supply faults cause image artifacts. IC Role / Device Role / Timing Role: LTC2919HMS-5#TRPBF uses REF output to offset ADJ1/ADJ2 for precise ±15V UV/OV windows; TMR tied to GND for deterministic 200ms reset hold. Use Value: Buffered 1V REF provides stable, low-noise offset - avoids drift-induced false trips in high-precision analog signal chains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6816ESE+ | Single 5V UVLO only; no adjustable inputs, no polarity selection, no REF output; 16-pin SOIC package | Only suitable for basic 5V supply monitoring - cannot replace dual-rail or negative-rail supervision capability of LTC2919HMS-5#TRPBF | Choose only if application requires only VCC UVLO and board space permits larger SOIC package |
| TPS3808G33DBVR | Single adjustable input (0.405V threshold), fixed 3.3V UVLO, no polarity selection, no REF, no TMR flexibility; SOT-23-6 | Lacks dual-input capability and negative-rail support; timeout fixed at 200ms (no external cap option); not AEC-Q100 qualified | Consider only for cost-sensitive, single-rail 3.3V systems where automotive qualification and mixed-polarity monitoring are unnecessary |
Compared with MAX6816ESE+ and TPS3808G33DBVR, the LTC2919HMS-5#TRPBF delivers unique dual adjustable inputs with polarity selection, integrated 1V REF for negative-rail offset, and programmable reset timeout - making it the only solution capable of replacing discrete supervisor combinations in AEC-Q100-compliant dual-rail systems.
Availability
LTC2919HMS-5#TRPBF is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLCs, telecom base station power systems, and medical imaging equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2919HMS-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2919HMS-5#TRPBF belongs to Analog Devices' precision voltage supervisor product line, designed specifically for high-reliability power monitoring in automotive and industrial environments where accuracy, temperature stability, and configurability are critical.
FAQ
What is the guaranteed VCC UVLO threshold for LTC2919HMS-5#TRPBF?
The LTC2919HMS-5#TRPBF has a guaranteed VCC UVLO threshold of 4.50V (–10% of 5V) with ±0.3% hysteresis over –40°C to +125°C. This enables direct monitoring of a 5V supply without external resistors, and the specification is validated across the full H-grade temperature range per the datasheet's ELECTRICAL CHARACTERISTICS table.
How does the SEL pin configure polarity for ADJ1 and ADJ2 on LTC2919HMS-5#TRPBF?
On the LTC2919HMS-5#TRPBF, the SEL pin sets polarity via three states: SEL = VCC configures both ADJ1 and ADJ2 for positive polarity (UV detection), SEL = OPEN configures ADJ1+ and ADJ2–, and SEL = GND configures both for negative polarity (OV detection). This is confirmed in Table 1 of the datasheet and requires no external components.
Can LTC2919HMS-5#TRPBF monitor a negative supply like –12V?
Yes - the LTC2919HMS-5#TRPBF monitors negative supplies using its buffered 1V REF output as an offset. For example, a –12V rail is connected to ADJ1 via a resistor divider referenced to REF, enabling precise UV/OV detection. This capability is explicitly documented in the Applications Information section and Figure 1 of the datasheet.
What reset timeout options does LTC2919HMS-5#TRPBF support?
The LTC2919HMS-5#TRPBF supports three reset timeout modes: internal 200ms (TMR = GND), external capacitor (9ms/nF, e.g., 22nF → 200ms), or disabled/comparator mode (TMR = VCC). These options are electrically specified in the ELECTRICAL CHARACTERISTICS table and verified in Typical Performance Characteristics Figure G08–G09.
Is LTC2919HMS-5#TRPBF AEC-Q100 qualified?
Yes - the LTC2919HMS-5#TRPBF is explicitly qualified per AEC-Q100 Grade 0 (–40°C to +125°C) and listed under "AUTOMOTIVE PRODUCTS" in the ORDER INFORMATION table. Its H-grade temperature rating and qualification status are confirmed in the datasheet's ordering guide and Absolute Maximum Ratings section.
LTC2919HMS-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:
- 4.425V, 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-5#TRPBF FAQ
1.How can I place an order for LTC2919HMS-5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2919HMS-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-5#TRPBF reliable?
The price and inventory of LTC2919HMS-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-5#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2919HMS-5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2919HMS-5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2919HMS-5#TRPBF?
LTC2919HMS-5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2919HMS-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-5#TRPBF?
For technical support, including LTC2919HMS-5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2919HMS-5#TRPBF requirements.
6.How does Aetrix verify that LTC2919HMS-5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2919HMS-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-5#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2919HMS-5#TRPBF?
All LTC2919HMS-5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2919HMS-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-5#TRPBF part is unused and in its original packaging.
Return procedure for LTC2919HMS-5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2919HMS-5#TRPBF Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
