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Analog Devices Inc. LTC2910HGN#PBF
- Part No.:
- LTC2910HGN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2910HGN#PBF.pdf
- Description:
- IC SUPERVISOR 8 CHANNEL 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,425
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Product details
Overview
LTC2910HGN#PBF from Analog Devices (acquired Linear Technology) is an octal positive/negative voltage monitor IC designed for multi-rail power supply supervision in high-reliability systems. It features eight 0.5V threshold inputs with ±1.5% accuracy over –40°C to +125°C, 50μA quiescent current, open-drain RST/RST outputs, and adjustable reset timeout via external capacitor. It is deployed in industrial servers and automotive control units requiring precise undervoltage detection across mixed-polarity rails.
For engineers reviewing the LTC2910HGN#PBF datasheet, LTC2910HGN#PBF pinout, LTC2910HGN#PBF application, or LTC2910HGN#PBF equivalent, key selection considerations include input polarity configuration via SEL pin, VCC shunt regulator operation above 6V, glitch-immune comparator response, and guaranteed RST/RST assertion down to VCC = 1V - all critical for robust power-on reset sequencing in harsh-temperature environments.
Technical Context
The LTC2910HGN#PBF integrates eight independent comparators referenced to a buffered 1V internal reference, enabling both positive- and negative-voltage monitoring through resistor-divider networks. Its three-state SEL pin selects polarity modes for V7/V8 inputs without external components, while DIS pin disables reset outputs except during VCC UVLO.
Reset timing is controlled by an external capacitor on TMR pin (e.g., 1nF → 8.5ms timeout), and internal glitch filtering ensures transient immunity without added hysteresis. The device operates as a direct supply input up to 6V or as a shunt regulator above 6V, with VCC UVLO at 2.0V (±0.1V) and 25mV hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Threshold Voltage | 0.500V ±1.5% over –40°C to +125°C - enables accurate 10% tolerance rail monitoring (e.g., 5V → 4.5V trip) |
| Quiescent Current | 50μA typical - supports always-on supervision in battery-backed or low-power systems |
| Reset Timeout Range | 6–14ms with CTMR = 1nF - provides configurable hold time for power rail settling after fault clearance |
| VCC Operating Range | 2.3V to 6V direct supply; >6V requires series resistor - accommodates wide-input industrial supplies |
| Output Type | Open-drain RST (active-low) and RST (active-high) - supports wired-OR reset buses and level-shifting |
| Reference Output | 1.000V ±15mV buffered REF pin - supplies stable offset for negative-rail divider networks |
| UVLO Threshold | 2.0V ±0.1V with 25mV hysteresis - ensures clean system reset during brown-out conditions |
Pinout & Package
Package: 16-Lead Plastic SSOP (GN16), 5.8mm × 3.9mm body, 0.635mm pitch, exposed pad optional.
| 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 determines whether input monitors positive (Vn < 0.5V) or negative (Vn > 0.5V) rails |
| VCC (Pin 16) | Supply input / shunt regulator | Operates directly up to 6V; regulates at ~6.5V above 6V with external current-limiting resistor |
| RST, RST (Pins 11–12) | Complementary open-drain reset outputs | RST pulls low on fault; RST pulls high - enables flexible reset logic interfacing |
| REF (Pin 10) | Buffered 1V reference output | Sources/sinks ±1mA; drives ≤1nF capacitive loads - used for negative-monitoring offset |
| SEL (Pin 14) | Three-state polarity select | GND/VCC/open sets V7/V8 polarity per Table 1 - eliminates external logic for dual-mode monitoring |
| DIS (Pin 13) | Reset disable control | Pull high to inhibit RST/RST (except during VCC UVLO); internal 2μA pull-down allows open-circuit default |
| TMR (Pin 15) | Reset timeout capacitor connection | CTMR ≥10pF to GND sets delay (9ms/nF); tie to VCC to bypass timer |
Key Features
| Feature | Design Value |
|---|---|
| Octal input monitoring with ±1.5% threshold accuracy | Enables simultaneous supervision of 8 rails (e.g., 12V, 5V×2, 3.3V×2, 2.5V, 1.8V, 1.2V) within tight tolerance bands |
| Pin-selectable polarity for two inputs | V7/V8 support both positive-undervoltage and negative-undervoltage detection using single SEL pin - reduces BOM count |
| Adjustable reset timeout with disable function | TMR capacitor sets delay (6–14ms); DIS pin allows software-controlled reset inhibition - supports safe firmware updates |
| Guaranteed operation down to VCC = 1V | RST/RST asserted even during deep brown-out - ensures fail-safe reset before logic corruption |
| Integrated 1V buffered reference | Stable REF output eliminates need for external precision reference in negative-rail monitoring circuits |
Applications
| Industrial Server Power Sequencing | Automotive ADAS Domain Controller |
|---|---|
Use Scenario: Monitoring 12V, 5V, 3.3V, 2.5V, 1.8V, and 1.2V rails plus –5V and –3.3V analog supplies in a rack-mounted server backplane. IC Role / Device Role / Timing Role: Octal voltage supervisor providing coordinated reset assertion only after all rails stabilize, with 200ms timeout for slow-start DC/DC converters. Use Value: Prevents CPU lockup by ensuring memory, I/O, and PHY subsystems power up in strict sequence with validated voltage margins. | Use Scenario: Supervising core SoC (1.2V), GPU (1.8V), SerDes (3.3V), CAN transceiver (5V), and camera sensor bias (–3.3V) in autonomous driving ECU. IC Role / Device Role / Timing Role: Dual-polarity monitor detecting both undervoltage on positive rails and overvoltage on negative rails via REF-based dividers. Use Value: Enables ASIL-B compliant reset behavior with glitch immunity and –40°C to +125°C guaranteed performance. |
| Programmable Logic Power Management | Medical Imaging Power Integrity |
Use Scenario: Controlling FPGA configuration sequence in a radiation-tolerant ground station transceiver, monitoring 48V input, 5V, 3.3V, 2.5V, 1.8V, and 1.2V derived rails. IC Role / Device Role / Timing Role: High-voltage tolerant supervisor using VCC shunt regulator mode for 48V input, with manual reset button integration via DIS pin. Use Value: Eliminates need for external LDO or DC/DC pre-regulator while maintaining sub-100μA standby current. | Use Scenario: Ensuring clean power-up of X-ray detector ASICs requiring tightly regulated ±5V, ±3.3V, and 1.2V supplies with <±2% tolerance. IC Role / Device Role / Timing Role: Precision rail monitor leveraging ±1.5% threshold accuracy and buffered REF to calibrate negative-rail dividers. Use Value: Reduces false resets caused by thermal drift, improving diagnostic uptime in FDA-cleared imaging equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2914IGN#PBF | Quad UV/OV monitor with two negative inputs; separate VCC pin; 16-lead SSOP/DFN | Supports overvoltage detection on all inputs; no octal capability; higher channel density per package | Select when OV protection is required alongside UV, or when fewer rails (≤4) need supervision with tighter layout constraints |
| LTC2908CMS8E#PBF | Six-supply monitor (four fixed, two adjustable); 8-lead MSOP; 1.2μA IQ | No negative monitoring; lower quiescent current; fixed thresholds only for four inputs | Select for space-constrained designs monitoring ≤6 positive rails where ultra-low IQ outweighs octal count and polarity flexibility |
Compared with LTC2910HGN#PBF, LTC2914IGN#PBF adds overvoltage detection but reduces input count to four, while LTC2908CMS8E#PBF offers smaller footprint and lower IQ but lacks negative-rail support and octal coverage - making LTC2910HGN#PBF optimal for mixed-polarity, high-channel-count industrial supervision.
Availability
LTC2910HGN#PBF is available at Aetrix Electronics and suitable for industrial servers, automotive ADAS controllers, and medical imaging systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2910HGN#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 its precision analog portfolio, emphasizing high-reliability signal conditioning, power management, and supervisory ICs for demanding environments.
The LTC2910 product line was designed specifically for multi-rail voltage supervision in systems where simultaneous monitoring of positive and negative supplies - with guaranteed operation across –40°C to +125°C - is essential to functional safety compliance.
FAQ
What is the operating temperature range of the LTC2910HGN#PBF?
The LTC2910HGN#PBF is rated for –40°C to +125°C ambient operation, matching the H-grade specification. This extended range is validated across all electrical parameters including ±1.5% threshold accuracy, 50μA quiescent current, and RST/RST output behavior - making LTC2910HGN#PBF suitable for under-hood automotive and industrial control applications where thermal stress is severe.
How does the SEL pin configure polarity for V7 and V8 on the LTC2910HGN#PBF?
The SEL pin on the LTC2910HGN#PBF is a three-state input: tied to VCC configures both V7 and V8 for positive-undervoltage monitoring (reset when Vn < 0.5V); left open configures V7 positive and V8 negative (reset when V8 > 0.5V); tied to GND configures both for negative monitoring (reset when Vn > 0.5V). This eliminates external logic and enables flexible rail assignment without redesigning the LTC2910HGN#PBF circuit board.
Can the LTC2910HGN#PBF monitor a 48V input supply?
Yes - the LTC2910HGN#PBF supports 48V input via its internal VCC shunt regulator. When VCC exceeds 6V, the pin regulates at ~6.5V; a series current-limiting resistor (e.g., 8.25kΩ for 48V) must be used to keep input current ≤10mA. This allows direct connection to high-voltage rails without external regulators, preserving the low-quiescent-current advantage of the LTC2910HGN#PBF.
What is the minimum VCC voltage required for valid reset output assertion on the LTC2910HGN#PBF?
The LTC2910HGN#PBF guarantees RST low and RST high assertion down to VCC = 1V, per datasheet specifications. Below 2.0V, the device enters undervoltage lockout (UVLO) mode and forces reset outputs regardless of input states - ensuring fail-safe behavior during brown-out. This VCC = 1V guarantee is unique to the LTC2910HGN#PBF among octal supervisors and critical for systems with weak hold-up capacitance.
Does the LTC2910HGN#PBF require external components for negative voltage monitoring?
The LTC2910HGN#PBF requires only two external resistors per negative rail (RA and RB) to form a divider referenced to the internal 1V buffered REF pin - no additional op-amps, references, or level-shifters are needed. The REF pin sources/sinks ±1mA and drives ≤1nF, enabling direct connection to standard resistor networks. This integrated REF capability is a core design feature of the LTC2910HGN#PBF that simplifies negative-supply supervision.
LTC2910HGN#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- 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-SSOP
LTC2910HGN#PBF FAQ
1.How can I place an order for LTC2910HGN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2910HGN#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 LTC2910HGN#PBF reliable?
The price and inventory of LTC2910HGN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2910HGN#PBF is usually 5 days.
3.What payment methods are accepted for LTC2910HGN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2910HGN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2910HGN#PBF?
LTC2910HGN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2910HGN#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 LTC2910HGN#PBF?
For technical support, including LTC2910HGN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2910HGN#PBF requirements.
6.How does Aetrix verify that LTC2910HGN#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2910HGN#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 LTC2910HGN#PBF meets industry standards.
7.What is the process for return or replacement of LTC2910HGN#PBF?
All LTC2910HGN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2910HGN#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 LTC2910HGN#PBF part is unused and in its original packaging.
Return procedure for LTC2910HGN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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