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Analog Devices Inc. LTC2910HDHC#PBF
- Part No.:
- LTC2910HDHC#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2910HDHC#PBF.pdf
- Description:
- IC SUPERVISOR 8 CHANNEL 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,531
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Product details
Overview
LTC2910HDHC#PBF 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, open-drain RST/RST outputs, and a buffered 1V reference. Used in industrial servers and automotive control units where multi-rail power integrity must be verified before system boot.
For engineers reviewing the LTC2910HDHC#PBF datasheet, LTC2910HDHC#PBF pinout, LTC2910HDHC#PBF application, or LTC2910HDHC#PBF equivalent, key selection criteria include input polarity configurability via SEL pin, adjustable reset timeout (6–14ms), guaranteed operation down to VCC = 1V, and support for both undervoltage and overvoltage detection on negative rails using external resistor dividers.
Technical Context
The LTC2910HDHC#PBF implements eight independent comparators each referenced to a precision 0.5V internal threshold, with glitch filtering to suppress transients <500μs. Input polarity for V7/V8 is selected via three-state SEL pin (VCC/GND/open), enabling mixed positive/negative rail monitoring without external components.
Reset assertion is controlled by an internal oscillator-driven timer (TMR pin), supporting programmable timeout (6–14ms over temperature) via external capacitor or bypass mode when tied to VCC. DIS pin disables RST/RST outputs except during VCC UVLO, and internal 6.5V shunt regulator allows direct connection to supplies up to 48V with series limiting resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Vn Threshold | 500mV ±1.5% over –40°C to +125°C - ensures precise undervoltage trip points across automotive/industrial temperature range |
| Quiescent Current | 50μA typical - enables always-on supervision in battery-backed or low-power systems |
| RST Timeout Range | 6ms to 14ms - adjustable via TMR capacitor; supports long-duration reset hold for slow-ramping supplies |
| VCC Operating Range | 2.3V to 6V direct; up to 48V with external series resistor - accommodates wide input supply configurations |
| REF Output | 1.000V ±15mV, ±1mA drive - provides stable offset for negative-rail monitoring resistor networks |
| Input Leakage | ±15nA max at 25°C - minimizes error in high-impedance voltage divider designs |
| UVLO Threshold | 2.0V ±100mV - guarantees fail-safe reset assertion during main supply brownout |
Pinout & Package
Package: 16-lead (5mm × 3mm) plastic DFN (DHC16), exposed pad (Pin 17) optional GND connection, θJA = 43.5°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V1–V6 (Pins 1–6) | Positive-only voltage inputs | Assert reset when voltage falls below 0.5V; tie to VCC if unused |
| V7, V8 (Pins 7–8) | Polarity-configurable inputs | Reset triggered when voltage <0.5V (SEL=VCC) or >0.5V (SEL=GND); enable negative rail monitoring |
| SEL (Pin 14) | Three-state polarity select | VCC → both V7/V8 positive; open → V7 positive/V8 negative; GND → both negative |
| TMR (Pin 15) | Reset timeout capacitor node | CTMR = 1nF yields 8.5ms delay; tie to VCC to disable timeout |
| DIS (Pin 13) | Output disable control | Pull high to inhibit RST/RST (except during VCC UVLO); internal 2μA pull-down |
| RST / RST (Pins 11–12) | Complementary open-drain reset outputs | RST active-low, RST active-high; both guaranteed functional down to VCC = 1V |
| REF (Pin 10) | Buffered 1V reference output | Sources/sinks ±1mA; drives ≤1nF capacitive loads; used as offset for negative-monitoring dividers |
| VCC (Pin 16) | Supply input / shunt regulator | Operates directly ≤6V; functions as 6.5V shunt above 6V (requires current-limiting resistor) |
Key Features
| Feature | Design Value |
|---|---|
| Octal input monitoring with polarity flexibility | Supports six fixed-positive + two configurable inputs (V7/V8), enabling mixed-rail supervision in single IC |
| ±1.5% threshold accuracy over full temp range | Eliminates need for calibration in automotive (-40°C to +125°C) and industrial applications |
| Adjustable reset timeout with disable option | TMR capacitor sets delay (6–14ms); DIS pin allows software-controlled reset inhibition |
| Guaranteed operation down to VCC = 1V | Ensures reliable reset assertion during deep brownout or backup-battery operation |
| Integrated 1V buffered reference | Provides stable bias for negative-rail resistor dividers without external reference IC |
| Glitch-immune comparator architecture | Low-pass filtered inputs reject transients <500μs, preventing false resets on noisy supply lines |
Applications
| Industrial PLC Power Sequencing | Automotive ADAS Domain Controller |
|---|---|
Use Scenario: Monitoring 12V main, 5V I/O, 3.3V core, 2.5V memory, 1.8V SerDes, and dual 5V/3.3V auxiliary rails during cold-cranking and load-dump events. IC Role / Device Role / Timing Role: Octal supervisor asserts synchronized reset until all rails stabilize above thresholds; TMR set to 200ms to accommodate slow-ramping isolated DC-DCs. Use Value: Prevents firmware execution on marginal supplies; eliminates need for six discrete supervisors and associated BOM cost. |
Use Scenario: Supervising 12V battery input, 5V camera interface, 3.3V radar processor, 1.2V AI accelerator, and two negative rails (–5V analog sensor bias, –3.3V CAN transceiver) in autonomous driving ECU. IC Role / Device Role / Timing Role: V7/V8 configured as negative monitors via SEL pin; REF pin supplies offset for –5V/–3.3V divider networks; RST held low until all rails valid. Use Value: Single-chip solution replaces discrete op-amp + reference + comparator circuits for negative rail monitoring, reducing layout area by 65%. |
| Telecom Base Station PSU | Medical Imaging Power Subsystem |
Use Scenario: Verifying 48V backplane, 12V fan control, 5V management MCU, 3.3V FPGA I/O, 2.5V DDR, 1.8V transceiver, and dual 5V/3.3V auxiliary rails in redundant AC/DC power modules. IC Role / Device Role / Timing Role: Uses VCC shunt regulator mode with 8.25kΩ series resistor for direct 48V connection; DIS pin tied to service processor for remote reset disable. Use Value: Enables direct high-voltage supervision without external LDO, simplifying thermal design and improving efficiency. |
Use Scenario: Ensuring clean startup of X-ray detector ASICs requiring strict sequencing of 12V analog bias, 5V digital logic, 3.3V ADC reference, 2.5V clock generator, 1.8V LVDS interface, and 1.2V core voltage. IC Role / Device Role / Timing Role: All eight inputs used for undervoltage detection; TMR capacitor set to 8.5ms to match FPGA configuration time; manual reset button integrated via RPB network. Use Value: Guarantees deterministic power-up sequence and prevents corrupted image acquisition due to premature ASIC initialization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2914IMS#PBF | Quad-input, supports UV/OV on all channels; no negative rail capability; 16-lead MSOP | Targeted at simpler 4-rail systems without negative supplies; lacks V7/V8 polarity flexibility | Select when only four rails require monitoring and OV detection is needed on each |
| LTC2908CMS8#PBF | Six-input (four fixed, two adjustable); 8-lead SOT-23; no REF output or negative monitoring | Compact footprint for space-constrained designs; limited to positive-only rails | Choose for cost-sensitive, low-channel-count applications where negative rail monitoring is unnecessary |
Compared with LTC2914IMS#PBF and LTC2908CMS8#PBF, the LTC2910HDHC#PBF uniquely delivers eight inputs with mixed-polarity support and integrated 1V reference-enabling full-system supervision in a single DFN package where alternatives require multiple ICs or compromise on rail count or negative monitoring capability.
Availability
LTC2910HDHC#PBF is available at Aetrix Electronics and suitable for industrial automation, automotive ADAS, and telecom infrastructure applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2910HDHC#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, Inc. (ADI) acquired Linear Technology in 2017 and maintains its high-performance analog and power management portfolio with rigorous automotive and industrial qualification standards.
The LTC2910HDHC#PBF belongs to Linear's precision voltage supervisor family, engineered specifically for multi-rail power integrity verification in mission-critical systems where reliability, temperature robustness, and design simplicity are paramount.
FAQ
What is the operating temperature range for the LTC2910HDHC#PBF?
The LTC2910HDHC#PBF is rated for –40°C to +125°C, making it suitable for under-hood automotive and industrial environments. This H-grade specification is confirmed in the "Operating Temperature Range" table on page 2 of the datasheet, and all key parameters-including threshold accuracy, reset timeout, and supply current-are guaranteed across this full range.
Can the LTC2910HDHC#PBF monitor negative voltages, and how is polarity configured?
Yes, the LTC2910HDHC#PBF can monitor two negative rails (V7 and V8) using its three-state SEL pin. When SEL is grounded, both V7 and V8 trigger reset when voltage exceeds 0.5V-enabling direct negative-supply monitoring. The REF pin provides a stable 1V output to bias external resistor dividers for precise trip-point setting.
How does the reset timeout function work on the LTC2910HDHC#PBF?
The LTC2910HDHC#PBF uses an external capacitor on the TMR pin to set reset timeout: CTMR = 1nF yields 8.5ms (6–14ms over temperature). If TMR is tied to VCC, timeout is disabled and RST/RST respond immediately after fault clearance. The timer restarts if any input violates threshold during the timeout period.
Is the LTC2910HDHC#PBF compatible with 48V supply inputs?
Yes-the LTC2910HDHC#PBF incorporates an internal 6.5V shunt regulator on VCC. To connect to 48V, a series current-limiting resistor (e.g., 8.25kΩ per datasheet Figure TA05) is required to keep input current ≤10mA. This allows direct high-voltage supervision without external regulators.
What is the purpose of the DIS pin on the LTC2910HDHC#PBF?
The DIS pin disables RST and RST outputs during normal operation-pulling DIS high inhibits reset assertion regardless of input faults. However, during VCC undervoltage lockout (UVLO <2.0V), RST/RST remain active even with DIS asserted, ensuring fail-safe behavior during primary supply failure.
LTC2910HDHC#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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DFN (5x3)
LTC2910HDHC#PBF FAQ
1.How can I place an order for LTC2910HDHC#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2910HDHC#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 LTC2910HDHC#PBF reliable?
The price and inventory of LTC2910HDHC#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2910HDHC#PBF is usually 5 days.
3.What payment methods are accepted for LTC2910HDHC#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2910HDHC#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2910HDHC#PBF?
LTC2910HDHC#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2910HDHC#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 LTC2910HDHC#PBF?
For technical support, including LTC2910HDHC#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2910HDHC#PBF requirements.
6.How does Aetrix verify that LTC2910HDHC#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2910HDHC#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 LTC2910HDHC#PBF meets industry standards.
7.What is the process for return or replacement of LTC2910HDHC#PBF?
All LTC2910HDHC#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2910HDHC#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 LTC2910HDHC#PBF part is unused and in its original packaging.
Return procedure for LTC2910HDHC#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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