My Inquiry
My Account
Analog Devices Inc. LTC2914IGN-2#TRPBF
- Part No.:
- LTC2914IGN-2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2914IGN-2#TRPBF.pdf
- Description:
- IC SUPERVISOR 4 CHANNEL 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,073
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2914IGN-2#TRPBF from Analog Devices (formerly Linear Technology) is a quad-input, adjustable UV/OV supply monitor IC designed for simultaneous monitoring of four independent voltage rails in power management subsystems. It features ±1.5% threshold accuracy over temperature, 62µA quiescent current, buffered 1V reference output, and open-drain UV/OV outputs with adjustable reset timeout. It is used in desktop/notebook computers and network servers for core/I/O rail supervision.
For engineers reviewing the LTC2914IGN-2#TRPBF datasheet, LTC2914IGN-2#TRPBF pinout, LTC2914IGN-2#TRPBF application, or LTC2914IGN-2#TRPBF equivalent, key selection considerations include its dual-polarity input capability (supporting up to two negative voltages), DIS pin–enabled output disable functionality, guaranteed operation down to VCC = 1V, and SSOP-16 package compatibility with industrial temperature range (–40°C to +85°C).
Technical Context
The LTC2914IGN-2#TRPBF implements four independent comparator pairs (VHn/VLn), each configurable via the three-state SEL pin for positive or negative supply monitoring. Its internal 0.5V threshold reference-buffered to 1V at REF-enables precise resistor-divider-based trip-point programming with ±1.5% accuracy across –40°C to +85°C.
Unlike the LTC2914-1 variant, the -2 version replaces the LATCH pin with DIS (pin 13), allowing full disable of both UV and OV outputs when pulled high. The TMR pin supports externally adjustable timeout (6–14 ms with 1 nF), and glitch rejection is achieved via internal low-pass filtering on all comparator outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3V to 6V direct supply; shunt-regulated above 6V with external current-limiting resistor |
| Threshold Accuracy | ±1.5% over full temperature range (–40°C to +85°C), enabling reliable 5V/3.3V/2.5V/1.8V rail monitoring |
| Quiescent Current | 62 µA typical, supporting micropower system-level supervision without significant load impact |
| REF Output | Buffered 1V reference (±1.5% over temp), capable of sourcing/sinking ±1 mA for negative-rail divider biasing |
| UV/OV Outputs | Open-drain, weak pull-up to VCC; VOL ≤ 0.15V at ISINK = 100 µA and VCC = 1V, ensuring valid reset assertion during brownout |
| DIS Function | Digital disable input (pin 13): pulls UV/OV high when driven ≥1.2V, enabling controlled reset suspension during firmware updates or safe-mode entry |
| Package & Temp | 16-lead SSOP, industrial grade (–40°C to +85°C), compatible with standard reflow and automated assembly |
Pinout & Package
Package: 16-Lead Plastic SSOP (GN), body size 4.9 mm × 3.9 mm × 1.5 mm, exposed pad not present (unlike DFN variant), JEDEC MS-013AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VH1–VH4 (pins 1,3,5,7) | High-side voltage inputs | Trigger UV if below 0.5V (positive polarity) or OV if below 0.5V (negative polarity, per SEL state) |
| VL1–VL4 (pins 2,4,6,8) | Low-side voltage inputs | Trigger OV if above 0.5V (positive polarity) or UV if above 0.5V (negative polarity, per SEL state) |
| VCC (pin 16) | Supply input / shunt regulator | Operates as direct supply ≤6V; functions as 6.6V shunt above 6V (requires series resistor to limit IIN ≤10mA) |
| GND (pin 9) | Reference ground | Primary return path for all internal comparators, reference buffer, and output drivers |
| UV (pin 12), OV (pin 11) | Open-drain logic outputs | Assert low on fault; weak internal pull-up to VCC allows wired-OR and flexible external pull-up selection |
| REF (pin 10) | Buffered reference output | Stable 1V source for negative-rail divider networks; drives ≤1nF capacitive loads without instability |
| TMR (pin 15) | Timeout capacitor connection | Connects to GND via CTMR (≥10pF); sets UV/OV hold time (e.g., 8.5ms with 1nF); tie to VCC to bypass |
| SEL (pin 14) | Three-state polarity select | Connect to VCC/GND/open to configure V3/V4 inputs as positive/negative/positive-negative pair |
| DIS (pin 13) | Output disable control | Active-high disable: forces UV/OV high regardless of input faults; internal 2µA pull-down ensures safe default state |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent UV/OV monitoring | Four VH/VL input pairs enable simultaneous supervision of 4 distinct rails (e.g., 5V, 3.3V, 2.5V, 1.8V) with shared UV/OV outputs |
| Adjustable trip thresholds | Resistor-divider programmability (±1.5% accuracy) supports custom UV/OV points for any nominal rail within VCC operating range |
| Negative voltage monitoring | SEL-configurable polarity + REF output enables robust –5V, –3.3V, or other negative rail supervision without external op-amps |
| Glitch-immune timing | Internal low-pass filtering on comparator outputs prevents false resets from transient noise; validated by Transient Duration vs Overdrive curves |
| Low-voltage operation guarantee | UV/OV asserted reliably down to VCC = 1V, ensuring valid reset signaling even during deep brownout conditions |
| Output disable (DIS) | Dedicated pin disables UV/OV assertion entirely-critical for safe firmware update sequences or dynamic power-state transitions |
Applications
| Desktop Power Sequencing | Notebook Battery Management |
|---|---|
|
Use Scenario: Coordinated startup/shutdown of CPU core, memory, chipset, and peripheral rails in ATX-compliant systems. IC Role / Device Role / Timing Role: LTC2914IGN-2#TRPBF monitors 5V standby, 3.3V main, 1.8V DDR, and 1.05V CPU VDDQ simultaneously; DIS pin suspends reset during BIOS POST handshake. Use Value: Eliminates need for four discrete supervisors; ±1.5% threshold accuracy ensures compliance with Intel VRD specs for rail tolerance windows. |
Use Scenario: Supervision of battery pack voltage, system rail, display backlight, and USB-C PD interface in portable platforms. IC Role / Device Role / Timing Role: LTC2914IGN-2#TRPBF uses VL1/VH1 for +12.6V battery UV/OV, VL2/VH2 for +5V USB-C PD, and SEL-configured VL3/VH3 for –3.3V display bias rail. Use Value: Single-chip solution reduces BOM count and PCB area; REF output eliminates external reference for negative bias generation. |
| Network Server PSU Monitoring | Industrial PLC I/O Module |
|
Use Scenario: Real-time validation of redundant 12V, 5V, 3.3V, and 1.2V rails in enterprise-grade power supplies. IC Role / Device Role / Timing Role: LTC2914IGN-2#TRPBF interfaces with microcontroller via UV/OV open-drain outputs; TMR capacitor sets 200ms reset pulse per ATCA spec. Use Value: 62µA quiescent current minimizes no-load loss; industrial temp rating ensures reliability in fanless 24/7 deployments. |
Use Scenario: Fault detection on isolated analog input/output channels, fieldbus power, FPGA configuration rails, and sensor excitation supplies. IC Role / Device Role / Timing Role: LTC2914IGN-2#TRPBF monitors +24V fieldbus, +5V FPGA core, –15V op-amp supply, and +3.3V ADC reference using mixed-polarity configuration. Use Value: Dual-polarity support avoids external level-shifting; DIS pin enables reset inhibition during hot-swap module insertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad UV/OV monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6812HEUK+T | Triple-monitor (not quad); fixed 3.08V threshold; no negative rail support; SOT-23-5 package | Only suitable for single-rail backup supervision; lacks resistor-programmability and multi-rail coordination | Select only for space-constrained single-supply brownout detection where quad monitoring is unnecessary |
| TPS3808G33DBVR | Single-channel supervisor; fixed 3.3V UV threshold; no OV detection; no REF output; SOT-23-6 | Cannot replace quad monitoring function; requires four devices plus external circuitry for equivalent coverage | Use only when supervising one critical rail with minimal footprint; not a functional substitute for LTC2914IGN-2#TRPBF |
Compared with MAX6812HEUK+T and TPS3808G33DBVR, the LTC2914IGN-2#TRPBF delivers integrated quad-rail supervision with programmable thresholds, negative voltage capability, and output disable-reducing component count by ≥75% and eliminating inter-rail timing skew inherent in multi-device solutions.
Availability
LTC2914IGN-2#TRPBF is available at Aetrix Electronics and suitable for desktop computers, network servers, and industrial PLCs requiring stable component supply with guaranteed long-term availability and traceable lot control.
Supply support for LTC2914IGN-2#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors for precision instrumentation, power management, and industrial automation.
The LTC2914 family was designed specifically for space- and power-constrained multi-rail systems requiring accurate, glitch-immune voltage supervision with flexible polarity and disable control-targeting computing, telecom, and embedded industrial markets.
FAQ
What is the operating temperature range for the LTC2914IGN-2#TRPBF?
The LTC2914IGN-2#TRPBF is rated for industrial temperature operation from –40°C to +85°C. This is confirmed by the "IGN" suffix in the part number and explicitly listed in the Order Information table under "Temperature Range" for all IGN variants. It is not rated for extended (H-grade) or commercial (C-grade) ranges.
How does the DIS pin on the LTC2914IGN-2#TRPBF differ from the LATCH pin on the LTC2914-1 variants?
The DIS pin (pin 13) on the LTC2914IGN-2#TRPBF is an active-high disable input that forces both UV and OV outputs into a high-impedance weak-pull-up state, suppressing all fault assertions. In contrast, the LATCH pin on LTC2914-1 variants controls OV output latching behavior and has no effect on UV. The DIS function is exclusive to -2 versions and replaces LATCH functionality.
Can the LTC2914IGN-2#TRPBF monitor negative voltages, and how is polarity configured?
Yes, the LTC2914IGN-2#TRPBF can monitor up to two negative voltages using its VH/VL input pairs and the three-state SEL pin. When SEL is grounded, V3 and V4 inputs are configured for negative monitoring: VHn triggers OV when below 0.5V, and VLn triggers UV when above 0.5V. The buffered 1V REF output provides the required bias for negative-rail resistor dividers.
What is the minimum VCC voltage required for guaranteed UV/OV assertion in the LTC2914IGN-2#TRPBF?
The LTC2914IGN-2#TRPBF guarantees UV assertion low and OV output behavior down to VCC = 1V, as stated in the Absolute Maximum Ratings and Electrical Characteristics tables ("Guaranteed OV and UV for VCC ≥ 1V"). Below 1V, device operation is not specified. At VCC = 1V, VOL remains ≤0.15V with 100µA sink current.
Is the REF pin on the LTC2914IGN-2#TRPBF intended for external load driving, and what are its limits?
Yes, the REF pin on the LTC2914IGN-2#TRPBF is a buffered 1V output designed to drive external circuitry, specifically the top resistor of negative-rail monitoring dividers. It sources and sinks up to ±1mA while maintaining ±1.5% accuracy over temperature. Capacitive loads must be ≤1nF to avoid instability; larger loads require external buffering.
LTC2914IGN-2#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 4
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SSOP
LTC2914IGN-2#TRPBF FAQ
1.How can I place an order for LTC2914IGN-2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2914IGN-2#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 LTC2914IGN-2#TRPBF reliable?
The price and inventory of LTC2914IGN-2#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2914IGN-2#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2914IGN-2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2914IGN-2#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2914IGN-2#TRPBF?
LTC2914IGN-2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2914IGN-2#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 LTC2914IGN-2#TRPBF?
For technical support, including LTC2914IGN-2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2914IGN-2#TRPBF requirements.
6.How does Aetrix verify that LTC2914IGN-2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2914IGN-2#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 LTC2914IGN-2#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2914IGN-2#TRPBF?
All LTC2914IGN-2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2914IGN-2#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 LTC2914IGN-2#TRPBF part is unused and in its original packaging.
Return procedure for LTC2914IGN-2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2914IGN-2#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…
