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Analog Devices Inc. LTC2910IDHC#PBF
- Part No.:
- LTC2910IDHC#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2910IDHC#PBF.pdf
- Description:
- IC SUPERVISOR 8 CHANNEL 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:584
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Product details
Overview
LTC2910IDHC#PBF from Analog Devices (formerly Linear Technology) is an octal-input voltage supervisor IC designed for simultaneous monitoring of up to eight positive or negative supply rails in complex power systems. It features ±1.5% threshold accuracy over –40°C to +85°C, 50μA quiescent current, adjustable reset timeout (6–14ms), and open-drain RST/RST outputs. It is deployed in multi-rail server power supplies to ensure coordinated system reset upon any rail undervoltage.
For engineers reviewing the LTC2910IDHC#PBF datasheet, LTC2910IDHC#PBF pinout, LTC2910IDHC#PBF application, or LTC2910IDHC#PBF equivalent, key selection criteria include input polarity configurability via SEL pin, buffered 1V reference output, glitch-immune comparator architecture, VCC shunt regulation up to 6V, and guaranteed operation down to VCC = 1V.
Technical Context
The LTC2910IDHC#PBF integrates eight independent comparators, each referenced to a precision 0.5V internal threshold with ±1.5% accuracy across temperature. Its three-state SEL pin selects polarity configurations for V7/V8 inputs-positive (UV detection), negative (UV detection when voltage exceeds 0.5V), or mixed-enabling flexible monitoring of both positive and negative rails without external components.
Reset assertion is controlled by a capacitor-programmable timer (TMR pin), supporting timeout periods from 6ms to >1s via CTMR selection. The device includes a 1V buffered reference (REF pin, ±1mA drive), VCC shunt regulator (6.2–7.0V), and UVLO circuit that guarantees RST/RST behavior down to VCC = 1V, ensuring robust power-up sequencing in low-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Count | 8 independent voltage monitor inputs (V1–V8), configurable for positive or negative rail monitoring |
| Threshold Accuracy | ±1.5% over –40°C to +85°C - ensures reliable trip points across industrial temperature range |
| Quiescent Current | 50μA typical - enables use in always-on supervisory circuits without significant power penalty |
| Reset Timeout Range | 6–14ms (CTMR = 1nF) - provides sufficient hold time for power rail stabilization after fault clearance |
| VCC Operating Range | 2.3V to 6V direct supply; >6V requires external series resistor due to internal 6.6V shunt regulator |
| Reference Output | 1.000V ±15mV buffered REF pin - supplies stable bias for negative-rail divider networks |
| Output Type | Open-drain RST (active-low) and RST (active-high) - supports wired-OR reset bus and level-shifting |
Pinout & Package
Package: 16-lead (5mm × 3mm) plastic DFN (DHC16), exposed pad (Pin 17) optional GND connection. Thermal resistance θJA = 43.5°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V1–V6 (Pins 1–6) | Positive-supply monitor inputs | Assert reset when voltage falls below 0.5V; tied to VCC if unused |
| V7, V8 (Pins 7–8) | Polarity-configurable inputs | SEL pin determines whether UV condition occurs at V < 0.5V (positive) or V > 0.5V (negative) |
| VCC (Pin 16) | Supply input / shunt regulator | Operates as direct supply ≤6V; functions as 6.6V shunt above 6V with current-limiting resistor |
| RST (Pin 11) | Active-low open-drain reset | Pulls low after timeout when all inputs are valid; weak internal pull-up to VCC |
| RST (Pin 12) | Active-high open-drain reset | Pulls high during fault; weak internal pull-up to VCC; complements RST logic |
| REF (Pin 10) | Buffered 1V reference output | Sources/sinks ±1mA; drives ≤1nF capacitive load; used for negative-rail offset networks |
| SEL (Pin 14) | Three-state polarity select | Connect to VCC/GND/open to set V7/V8 polarity per Table 1 - no external components needed |
| TMR (Pin 15) | Reset timeout capacitor node | CTMR ≥10pF to GND sets delay; tie to VCC to bypass timer and assert immediate reset |
| DIS (Pin 13) | Reset disable control | Pull high to inhibit RST/RST assertion except during VCC UVLO; internal 2μA pull-down |
Key Features
| Feature | Design Value |
|---|---|
| Octal input monitoring with polarity flexibility | Supports six fixed-positive + two programmable (V7/V8) inputs - eliminates need for multiple discrete supervisors |
| ±1.5% threshold accuracy over full temp range | Reduces design margin requirements for 10%-tolerant rails like 5V ±10% or 3.3V ±10% |
| Glitch-immune comparator architecture | Integrating low-pass filter on each input prevents false resets from transient noise without adding hysteresis error |
| Adjustable reset timeout with disable | Capacitor-programmable delay (6–14ms typical) plus DIS pin allows precise reset coordination and test-mode override |
| Guaranteed operation down to VCC = 1V | Enables reliable reset assertion during brown-out conditions where other supervisors fail |
Applications
| Server Power Sequencing | Industrial PLC I/O Voltage Monitoring |
|---|---|
Use Scenario: Monitoring 12V, dual 5V, dual 3.3V, 2.5V, 1.8V, and 1.2V rails in a 1U network server PSU. IC Role / Device Role / Timing Role: Centralized octal supervisor providing synchronized RST/RST signals to CPU and FPGA upon any rail fault. Use Value: Reduces BOM count vs. four dual-supervisors; eliminates timing skew between rail monitors. | Use Scenario: Supervising isolated 24V DC input, 5V logic, 3.3V MCU, and –12V analog rails in modular PLC backplane. IC Role / Device Role / Timing Role: Polarity-selectable V7/V8 inputs monitor –12V rail directly; REF pin biases negative-divider network. Use Value: Single-chip solution replaces discrete op-amp + comparator for negative rail monitoring. |
| Medical Imaging Power Integrity | Automotive ADAS Domain Controller |
Use Scenario: Ensuring clean startup of X-ray detector ASICs powered by 1.2V, 1.8V, 2.5V, 3.3V, and 5V rails with tight sequencing windows. IC Role / Device Role / Timing Role: TMR capacitor sets 200ms timeout (via 22nF) to accommodate slow-ramping high-capacitance rails. Use Value: Adjustable timeout avoids premature release before rail settling; DIS pin enables manual reset injection during diagnostics. | Use Scenario: Monitoring 12V battery-derived rails (5V, 3.3V, 1.8V) and isolated CAN transceiver –5V supply in radar ECU. IC Role / Device Role / Timing Role: V7 configured for negative monitoring of –5V CAN supply; SEL pin hardwired to GND for fixed polarity. Use Value: Eliminates need for external inverting amplifier; ±1.5% accuracy meets ASIL-B voltage monitoring tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2914HMS#PBF | Quad-input UV/OV monitor with two negative inputs; separate VCC pin; 16-lead MSOP package | Supports overvoltage detection on all inputs; lacks octal channel count and adjustable timeout | Select when OV monitoring is required alongside UV, and system uses only four critical rails |
| LTC2908CMS8#PBF | Six-input supervisor (four fixed, two adjustable); 8-lead SOT-23; no negative monitoring capability | Smaller footprint but limited to positive rails only; no REF output or SEL polarity control | Select for space-constrained designs with ≤6 positive rails and no negative supply monitoring need |
Compared with LTC2914HMS#PBF and LTC2908CMS8#PBF, the LTC2910IDHC#PBF uniquely delivers eight inputs with mixed-polarity support, integrated 1V REF, and capacitor-adjustable timeout - making it optimal for dense, multi-rail systems requiring both positive and negative rail supervision without external components.
Availability
LTC2910IDHC#PBF is available at Aetrix Electronics and suitable for server power management, industrial PLCs, medical imaging subsystems, and automotive ADAS domain controllers requiring stable component supply and long-term lifecycle support.
Supply support for LTC2910IDHC#PBF 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 and maintains full product support, documentation, and manufacturing continuity for legacy Linear parts including the LTC2910 family.
The LTC2910 product line was designed for high-density, multi-rail power integrity monitoring in computing, networking, and industrial systems - emphasizing low quiescent current, precision threshold accuracy, and flexible polarity configuration without external components.
FAQ
What is the operating temperature range for the LTC2910IDHC#PBF?
The LTC2910IDHC#PBF is rated for –40°C to +85°C industrial temperature operation. This is confirmed by the "I" grade suffix in the part number and specified in the Absolute Maximum Ratings table, where electrical characteristics marked with ● apply across this full range - including ±1.5% threshold accuracy, 50μA ICC, and 6–14ms tRST.
How does the SEL pin configure polarity for V7 and V8 on the LTC2910IDHC#PBF?
The SEL pin on the LTC2910IDHC#PBF is a three-state input: tied to VCC configures both V7 and V8 for positive monitoring (UV when V < 0.5V); tied to GND configures both for negative monitoring (UV when V > 0.5V); left open configures V7 positive and V8 negative. This mapping is defined in Table 1 of the datasheet and requires no external resistors.
Can the LTC2910IDHC#PBF monitor a 48V input rail?
Yes - the LTC2910IDHC#PBF can monitor a 48V rail using a resistive divider network. As shown in Typical Application TA05, a series dropping resistor (RZ = 8.25kΩ) limits VCC current when deriving power from 48V, while RA/RB dividers scale the 48V rail to ≤0.5V at V1. The internal VCC shunt regulator handles the 48V-to-6V conversion safely.
What is the minimum VCC voltage required for the LTC2910IDHC#PBF to assert valid reset signals?
The LTC2910IDHC#PBF guarantees RST low and RST high assertion down to VCC = 1V, as specified in the Electrical Characteristics table under VCC(MIN). Below 2V, the device enters UVLO mode and asserts reset independently of input voltages - enabling reliable brown-out detection even during severe supply sag.
Does the LTC2910IDHC#PBF provide overvoltage (OV) detection capability?
No - the LTC2910IDHC#PBF is strictly an undervoltage (UV) monitor. All eight inputs trigger reset only when voltage falls below (positive rails) or rises above (negative rails) the 0.5V threshold. For combined UV/OV monitoring, Analog Devices recommends the LTC2914HMS#PBF, which supports both detection modes on all four inputs.
LTC2910IDHC#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFDFN Exposed Pad
- Packaging:
- Tube
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DFN (5x3)
LTC2910IDHC#PBF FAQ
1.How can I place an order for LTC2910IDHC#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2910IDHC#PBF 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 LTC2910IDHC#PBF reliable?
The price and inventory of LTC2910IDHC#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2910IDHC#PBF is usually 5 days.
3.What payment methods are accepted for LTC2910IDHC#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2910IDHC#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2910IDHC#PBF?
LTC2910IDHC#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2910IDHC#PBF 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 LTC2910IDHC#PBF?
For technical support, including LTC2910IDHC#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2910IDHC#PBF requirements.
6.How does Aetrix verify that LTC2910IDHC#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2910IDHC#PBF 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 LTC2910IDHC#PBF meets industry standards.
7.What is the process for return or replacement of LTC2910IDHC#PBF?
All LTC2910IDHC#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2910IDHC#PBF, 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 LTC2910IDHC#PBF part is unused and in its original packaging.
Return procedure for LTC2910IDHC#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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