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Analog Devices Inc. LTC2910HDHC#TRPBF
- Part No.:
- LTC2910HDHC#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2910HDHC#TRPBF.pdf
- Description:
- IC SUPERVISOR 8 CHANNEL 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,307
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Product details
Overview
LTC2910HDHC#TRPBF from Analog Devices (acquired Linear Technology) is an octal-input voltage supervisor IC designed for simultaneous monitoring of up to eight positive or negative supply rails in high-reliability systems. It features ±1.5% threshold accuracy over –40°C to +125°C, 50μA quiescent current, adjustable reset timeout (6–14ms), and dual open-drain RST/RST outputs. Used in industrial control backplanes and automotive ECUs requiring fault-tolerant power sequencing.
For engineers reviewing the LTC2910HDHC#TRPBF datasheet, LTC2910HDHC#TRPBF pinout, LTC2910HDHC#TRPBF application, or LTC2910HDHC#TRPBF equivalent, key selection criteria include guaranteed operation down to VCC = 1V, buffered 1V reference output, glitch-filtered inputs, polarity-selectable V7/V8 terminals, and DFN-16 (5mm × 3mm) package compatibility with high-density PCB layouts.
Technical Context
The LTC2910HDHC#TRPBF implements eight independent comparators each referenced to a precision 0.5V internal threshold, with all inputs sharing a single buffered 1V reference for negative-rail monitoring. Its three-state SEL pin configures V7/V8 polarity (positive/positive, positive/negative, or negative/negative) without external components.
Reset assertion is synchronized across all inputs via a shared timer circuit tied to the TMR pin; timeout is set by an external capacitor (e.g., 1nF → 8.5ms) and can be disabled by tying TMR to VCC. DIS pin disables RST/RST outputs except during VCC undervoltage lockout (UVLO at 2.0V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Vn Threshold | 492–508 mV - tight 1.5% tolerance ensures accurate undervoltage detection across full temperature range (–40°C to +125°C) |
| Quiescent Current | 50 μA typical - enables always-on supervision in battery-backed or low-power systems without significant load |
| Reset Timeout | 6–14 ms - adjustable via external capacitor on TMR pin; supports system stabilization after power recovery |
| VCC Operating Range | 2.3 V to 6 V - direct-supply operation; internal 6.6 V shunt regulator allows safe use with higher input voltages when series resistor applied |
| Reference Output | 0.985–1.020 V - buffered 1V REF drives capacitive loads ≤1 nF; used as offset for negative-rail monitoring circuits |
| Input Leakage | ±30 nA max - minimizes error in high-impedance voltage divider networks used for rail scaling |
| UVLO Threshold | 1.9–2.1 V - guarantees reliable reset assertion during brown-out conditions before core logic fails |
Pinout & Package
Package: 16-lead DFN (5mm × 3mm), exposed pad (Pin 17), RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V1–V6 (Pins 1–6) | Positive-only voltage inputs | Assert reset when voltage falls below 0.5V; tied to VCC if unused |
| V7, V8 (Pins 7–8) | Polarity-configurable inputs | SEL pin state determines whether input monitors positive (V<0.5V) or negative (V>0.5V) rails |
| VCC (Pin 16) | Supply input / shunt regulator | Operates as direct supply ≤6V; functions as 6.6V shunt above 6V with current-limiting resistor |
| RST, RST (Pins 11–12) | Complementary open-drain outputs | RST pulls low on fault; RST pulls high; both support wired-OR and external pull-up flexibility |
| REF (Pin 10) | Buffered 1V reference output | Sources/sinks ±1mA; stabilizes negative-monitoring divider networks; requires no load if unused |
| SEL (Pin 14) | Three-state polarity select | GND/VCC/open sets V7/V8 polarity per Table 1; leakage ≤±30μA ensures stable Hi-Z state |
| DIS (Pin 13) | Output disable control | Pulling high disables RST/RST except during UVLO; internal 2μA pull-down allows floating default |
| TMR (Pin 15) | Reset timeout capacitor node | Connects to GND via CTMR (≥10pF); sets delay (e.g., 1nF = 8.5ms); tie to VCC to bypass timer |
Key Features
| Feature | Design Value |
|---|---|
| Octal input monitoring | Simultaneously supervises eight rails-six fixed-positive and two polarity-selectable-reducing BOM count vs. multiple dual/quad supervisors |
| ±1.5% threshold accuracy | Guaranteed over –40°C to +125°C eliminates recalibration needs in extended-temperature industrial and automotive environments |
| Glitch-immune comparator inputs | Integrated low-pass filtering prevents false resets from transient noise without adding hysteresis-induced trip-point error |
| Adjustable reset timeout | Capacitor-programmable delay (6–14ms) ensures sufficient post-fault stabilization time before releasing reset to downstream logic |
| Buffered 1V reference | Enables precise negative-rail monitoring using simple resistor dividers while isolating reference loading from sensitive analog sections |
Applications
| Industrial PLC Backplane Power Monitoring | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Continuous supervision of 12V main, 5V logic, 3.3V MCU, 2.5V ADC, 1.8V FPGA core, 1.2V DDR termination, and dual negative rails (–5V sensors, –3.3V analog) in programmable logic controller chassis. IC Role / Device Role / Timing Role: Centralized voltage supervisor triggering system-wide reset if any rail deviates beyond 10% tolerance; RST/RST outputs drive watchdog and microcontroller reset lines. Use Value: Eliminates need for eight discrete supervisors; ±1.5% accuracy prevents nuisance resets during thermal cycling; DFN-16 footprint saves >40% board area vs. SSOP alternative. | Use Scenario: Monitoring critical ECU supplies including 12V battery, 5V CAN transceiver, 3.3V microcontroller, 2.5V sensor interface, 1.8V memory, 1.2V core, and negative rails for analog front-end biasing. IC Role / Device Role / Timing Role: Fault-detection engine asserting RST during cold-crank (VCC drop to 1V) and holding reset for 8.5ms post-recovery to ensure CPU initialization completes. Use Value: Guaranteed operation down to VCC = 1V meets ISO 16750-2 automotive cold-crank requirements; glitch filtering rejects ignition noise; SEL-configured V7/V8 monitor isolated sensor negatives without extra op-amps. |
| High-Density Telecom Server PSU | Medical Imaging Power Sequencing |
Use Scenario: Supervising 48V intermediate bus, 12V fans, 5V management ASIC, 3.3V PHY, 2.5V SerDes, 1.8V DDR, and dual 3.3V auxiliary rails in compact 1U server power distribution unit. IC Role / Device Role / Timing Role: Octal monitor coordinating power-good signaling across distributed DC/DC converters; DIS pin enables remote reset inhibition during firmware updates. Use Value: Single-chip solution reduces component count by 75% vs. quad supervisors; 50μA quiescent current minimizes standby loss; TMR capacitor adjustment tailors reset hold time to converter soft-start profiles. | Use Scenario: Ensuring correct power-up sequence and fault containment across MRI subsystem rails: 24V motors, 12V cooling, 5V FPGA, 3.3V ADC, 2.5V DAC, 1.8V clock generator, and –5V analog bias for RF amplifiers. IC Role / Device Role / Timing Role: Safety-critical supervisor asserting RST on any rail deviation and holding reset until all supplies stabilize for ≥10ms (CTMR = 1.2nF). Use Value: Buffered REF enables accurate –5V monitoring without external references; ±1.5% accuracy ensures compliance with IEC 62304 safety margins; DFN package withstands reflow profiles required for lead-free medical assemblies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2914HDE#TRPBF | Quad UV/OV monitor with two negative inputs; includes OV detection capability not present in LTC2910HDHC#TRPBF | Required where overvoltage protection is mandated (e.g., telecom rectifier outputs); lacks octal input count | Select when OV monitoring is essential and rail count ≤4; not a functional replacement due to different input architecture |
| LTC2908CMS8E#TRPBF | Six-supply monitor (four fixed, two adjustable); SOT-23-8 package; no negative monitoring or buffered REF | Used in space-constrained designs with ≤6 rails and no negative supplies; lower channel density but smaller footprint | Choose for cost-sensitive, low-channel-count applications where negative rail supervision is unnecessary |
Compared with LTC2910HDHC#TRPBF, LTC2914HDE#TRPBF adds overvoltage detection but halves input count, while LTC2908CMS8E#TRPBF sacrifices negative monitoring and reference buffering for ultra-compact size-neither offers octal coverage with polarity flexibility in a DFN-16 package.
Availability
LTC2910HDHC#TRPBF is available at Aetrix Electronics and suitable for industrial control backplanes, automotive ECUs, telecom server PSUs, and medical imaging power sequencing requiring stable component supply across extended temperature ranges.
Supply support for LTC2910HDHC#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, formed through acquisition of Linear Technology in 2017.
The LTC2910HDHC#TRPBF belongs to ADI's precision power monitoring product line, engineered for mission-critical systems demanding guaranteed operation across –40°C to +125°C, low-power always-on supervision, and flexible multi-rail fault detection without external active components.
FAQ
What is the operating temperature range of the LTC2910HDHC#TRPBF?
The LTC2910HDHC#TRPBF is rated for operation from –40°C to +125°C, making it suitable for under-hood automotive, industrial motor control, and aerospace applications where ambient temperatures exceed commercial-grade limits. All key specifications-including threshold accuracy (±1.5%), reference voltage (0.985–1.020 V), and reset timeout (6–14 ms)-are guaranteed across this full range.
How does the SEL pin configure polarity for V7 and V8 inputs on the LTC2910HDHC#TRPBF?
The SEL pin on the LTC2910HDHC#TRPBF is a three-state input that selects polarity for V7 and V8: tied to VCC configures both as positive monitors (reset on V<0.5V), left open configures V7 positive/V8 negative (reset on V7<0.5V or V8>0.5V), and tied to GND configures both as negative monitors (reset on V>0.5V). This eliminates external level-shifters for dual-negative rail supervision.
Can the LTC2910HDHC#TRPBF monitor supply voltages above 6V?
Yes-the LTC2910HDHC#TRPBF's VCC pin incorporates an internal 6.6V shunt regulator. To monitor supplies >6V (e.g., 12V, 48V), connect the source through a series current-limiting resistor sized to keep VCC pin current ≤10mA. For example, a 48V input requires RZ ≥ (48V – 6.6V)/10mA = 4.14kΩ. The device then regulates VCC to ~6.6V while drawing only 50μA quiescent current.
What is the minimum VCC voltage required for valid reset output operation in the LTC2910HDHC#TRPBF?
The LTC2910HDHC#TRPBF guarantees valid RST and RST output states down to VCC = 1V. Below 2.0V, the device enters undervoltage lockout (UVLO) mode, forcing RST low and RST high regardless of input conditions. Above 2.0V, input monitoring becomes active and reset timing follows the programmed TMR capacitor value.
Does the LTC2910HDHC#TRPBF require external components for basic octal monitoring functionality?
No-basic octal monitoring requires only bypass capacitor (0.1μF on VCC), TMR timing capacitor (e.g., 1nF), and optional pull-up resistors on RST/RST. Polarity configuration for V7/V8 uses only the SEL pin (VCC/GND/open); negative monitoring leverages the internal buffered 1V REF, eliminating external op-amps or references. Discrete resistive dividers are needed only to scale high-voltage rails to the 0.5V threshold.
LTC2910HDHC#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 8
- Voltage - Threshold:
- 8 Selectable Threshold Combinations
- Output:
- Open Drain or Open Collector
- Reset:
- Active High/Active Low
- Reset Timeout:
- 6ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DFN (5x3)
LTC2910HDHC#TRPBF FAQ
1.How can I place an order for LTC2910HDHC#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2910HDHC#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 LTC2910HDHC#TRPBF reliable?
The price and inventory of LTC2910HDHC#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2910HDHC#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2910HDHC#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2910HDHC#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2910HDHC#TRPBF?
LTC2910HDHC#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2910HDHC#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 LTC2910HDHC#TRPBF?
For technical support, including LTC2910HDHC#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2910HDHC#TRPBF requirements.
6.How does Aetrix verify that LTC2910HDHC#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2910HDHC#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 LTC2910HDHC#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2910HDHC#TRPBF?
All LTC2910HDHC#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2910HDHC#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 LTC2910HDHC#TRPBF part is unused and in its original packaging.
Return procedure for LTC2910HDHC#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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