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Analog Devices Inc. LTC2936IGN#PBF
- Part No.:
- LTC2936IGN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 24-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2936IGN#PBF.pdf
- Description:
- IC SUPERVISOR 6 CHANNEL 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,095
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Product details
Overview
LTC2936IGN#PBF from Analog Devices (formerly Linear Technology) is a programmable hex voltage supervisor IC with integrated EEPROM, I²C interface, and six comparator outputs. It monitors up to six independent supply rails (0.2V–5.8V range), offers ±1% threshold accuracy, 7.5µs comparator response, and autonomous fault logging for high-availability server power sequencing.
For engineers reviewing the LTC2936IGN#PBF datasheet, LTC2936IGN#PBF pinout, LTC2936IGN#PBF application, or LTC2936IGN#PBF equivalent, this device supports precise multi-rail supervision in telecom and storage systems where EEPROM-configurable trip points, programmable delay-on-release, and SMBus-compatible ALERT signaling are required.
Technical Context
The LTC2936IGN#PBF implements six independent analog comparators per channel-each configurable for overvoltage (OV) and undervoltage (UV) detection across three input ranges (precision/low/medium) with 4mV/10mV/20mV LSB steps. Thresholds are stored in nonvolatile EEPROM and applied autonomously at power-up without host intervention.
It features two general-purpose inputs (GPI1/GPI2) supporting MR, UVDIS, MARG, WP, or AUXC functions, and three GPIO pins configurable as inputs, open-drain outputs, or weak-pull-up outputs-with programmable polarity, mapping, and delay-on-release (1ms–1.64s). All digital control uses I²C/SMBus at up to 400kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supervised Channels | 6 independent voltage inputs (V1–V6), each with dual OV/UV thresholds and dedicated open-drain CMP output |
| Threshold Accuracy | ±1% max over –40°C to +85°C for medium-range settings (>3V), enabling tighter system voltage margins |
| Comparator Response | 7.5µs typical with 20 LSB overdrive, ensuring fast fault reaction in high-speed power systems |
| I²C Interface | Standard-mode (10–400kHz) SMBus-compatible interface with 9 selectable slave addresses via ASEL0/ASEL1 |
| Supply Range | VPWR = 3.4V to 13.9V; internal 3.3V regulator (VDD33) with ±2.3% regulation and 10mA current limit |
| EEPROM | 10,000 write cycles / 10-year data retention; stores configuration, fault history snapshot, and user registers |
| Operating Temp | –40°C to +85°C (Industrial grade), validated for continuous operation in network server and telecom chassis environments |
Pinout & Package
Package: 24-lead plastic SSOP (GN), 4mm × 5mm footprint, exposed pad not present (QFN variant has exposed GND pad; SSOP does not).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V1–V6 | Analog voltage input | Monitor up to six supply rails; each supports programmable OV/UV thresholds in precision (0.2–1.2V), low (0.5–3V), or medium (1–5.8V) range |
| CMP1–CMP6 | Open-drain comparator output | Assert low on configured fault condition; internally pulled up to VDD33 (15µA); compatible with 3.3V/5V logic |
| GPI1, GPI2 | Configurable general-purpose input | Selectable function: manual reset (MR), UV disable (UVDIS), margin test (MARG), write protect (WP), or auxiliary comparator (AUXC) |
| GPIO1–GPIO3 | Configurable input/output | Programmable as input, open-drain output, or weak pull-up output; supports mapping, ALERT latching, and delay-on-release (1ms–1.64s) |
| SCL, SDA | I²C serial interface | 400kHz max clock rate; requires external pull-ups; supports SMBus Alert Response Address (0x0C) and Global Address (0x73) |
| VPWR, VDD33, GND | Power supply terminals | VPWR powers internal regulator (3.4–13.9V); VDD33 is regulated 3.3V output (100nF bypass required); GND is common reference |
| ASEL0, ASEL1 | I²C address select | Set one of nine 7-bit slave addresses (0x50–0x5A) by tying to GND, VDD33, or leaving floating |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-based autonomous operation | Configuration and fault history persist across power cycles; no host firmware required for basic supervision |
| 256 programmable thresholds per channel | Enables fine-grained voltage margining and adaptive sequencing in multi-rail FPGA or ASIC power domains |
| Programmable delay-on-release | Eight discrete delay options (1ms–1.64s) per GPIO output prevent chatter during transient recovery |
| Dual-comparator per channel | Independent OV and UV detection per rail allows asymmetric fault windows (e.g., +5%/–10%) for robust brownout handling |
| ALERT output compliance | Single-wire SMBus Alert Response protocol support enables centralized fault polling without dedicated interrupt lines |
Applications
| High-Availability Server Power Sequencing | Telecom Line Card Supervision |
|---|---|
|
Use Scenario: Monitoring 12V, 5V, 3.3V, 2.5V, 1.8V, and 1.2V rails in dual-CPU server motherboard with hot-swap capability. IC Role / Device Role / Timing Role: Primary voltage supervisor managing power-good assertion, reset coordination, and fault logging via I²C to BMC. Use Value: ±1% threshold accuracy prevents false resets during nominal supply ripple; EEPROM retains last-fault state for post-mortem diagnostics. |
Use Scenario: Supervising DC/DC converter outputs on a 48V-powered telecom line card with redundant power feeds. IC Role / Device Role / Timing Role: Fault detector triggering ALARM signal to shelf controller upon any rail deviation beyond programmed limits. Use Value: Programmable delay-on-release (e.g., 205ms) avoids nuisance alarms during brief load transients; AUXC input validates external reference stability. |
| Data Storage Backplane Monitoring | Industrial FPGA-Based Control System |
|
Use Scenario: Real-time monitoring of 3.3V, 2.5V, 1.8V, 1.5V, 1.2V, and 0.9V supplies feeding SAS/SATA controller, PHY, and memory buffers. IC Role / Device Role / Timing Role: Hex supervisor providing per-rail status to RAID controller firmware via I²C; CMP outputs drive discrete reset chains. Use Value: 7.5µs comparator response ensures rapid shutdown before data corruption occurs during catastrophic rail collapse. |
Use Scenario: Power integrity validation in an industrial PLC module with isolated 24V input, 5V intermediate, and 3.3V/1.2V FPGA core supplies. IC Role / Device Role / Timing Role: Configurable GPI inputs accept external watchdog pulses; GPIO outputs drive LED indicators and relay drivers. Use Value: Margin test (MARG) mode enables in-system voltage stress testing without hardware modification; EEPROM preserves calibration across firmware updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6816ESE+ | Quad supervisor (4 channels), no EEPROM, fixed thresholds, no I²C, only manual reset input | Limited to simpler systems requiring basic reset generation-not suitable for multi-rail, field-programmable, or fault-logging use cases | Choose when cost sensitivity outweighs configurability and diagnostic needs |
| TPS389033DSER | Triple supervisor (3 channels), I²C interface, ±1.5% threshold accuracy, no EEPROM, no GPIO flexibility | Supports fewer rails and lacks autonomous operation; requires host to reconfigure after each power cycle | Prefer for compact 3-rail designs where EEPROM persistence and GPIO remapping are unnecessary |
Compared with MAX6816ESE+ and TPS389033DSER, the LTC2936IGN#PBF delivers unique value through its six-channel programmability, EEPROM-backed autonomy, and GPIO versatility-making it the only option among the three capable of replacing discrete supervisors while enabling field-upgradable fault policies in mission-critical infrastructure.
Availability
LTC2936IGN#PBF is available at Aetrix Electronics and suitable for high-availability computer systems, telecom equipment, and data storage systems requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature operation.
Supply support for LTC2936IGN#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 the LTC portfolio.
The LTC2936 belongs to Linear's precision power monitoring IC family, designed specifically for high-reliability infrastructure applications demanding autonomous, field-configurable, and fault-resilient voltage supervision.
FAQ
What is the operating temperature range for the LTC2936IGN#PBF?
The LTC2936IGN#PBF is rated for –40°C to +85°C (Industrial grade), verified across all electrical specifications including threshold accuracy, EEPROM retention, and I²C timing. This range is explicitly defined in the order information table and confirmed in the Absolute Maximum Ratings section of the datasheet.
Does the LTC2936IGN#PBF require external pull-up resistors on SCL and SDA?
Yes, the LTC2936IGN#PBF requires external pull-up resistors on both SCL and SDA lines, as stated in the Pin Functions section. The internal circuitry does not provide active pull-ups; typical values are 2.2kΩ to 4.7kΩ to VPWR or VDD33, depending on bus capacitance and speed requirements.
Can the LTC2936IGN#PBF monitor sub-1V supplies such as 0.9V or 0.85V?
Yes-the LTC2936IGN#PBF supports the Precision Range (0.2V–1.2V) with 4mV LSB step size, enabling accurate monitoring of 0.9V and 0.85V rails. Threshold accuracy remains ±1% in this range, as specified in the Electrical Characteristics table under VERR parameter conditions.
How is EEPROM endurance and data retention guaranteed for the LTC2936IGN#PBF?
The LTC2936IGN#PBF guarantees 10,000 write cycles and 10 years of data retention under normal operating conditions (TJ ≤ 85°C), as documented in the EEPROM Characteristics table. Endurance and retention degrade above 85°C junction temperature, per Note 6 in the datasheet.
Is the LTC2936IGN#PBF pin-compatible with other variants like LTC2936CUFD#PBF?
No-LTC2936IGN#PBF uses a 24-lead SSOP package (GN), while LTC2936CUFD#PBF uses a 24-lead QFN (UFD) with different pinout and thermal pad. Though functionally identical, they are not mechanically interchangeable; PCB layout must match the specific package variant ordered.
LTC2936IGN#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 6
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SSOP
LTC2936IGN#PBF FAQ
1.How can I place an order for LTC2936IGN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2936IGN#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 LTC2936IGN#PBF reliable?
The price and inventory of LTC2936IGN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2936IGN#PBF is usually 5 days.
3.What payment methods are accepted for LTC2936IGN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2936IGN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2936IGN#PBF?
LTC2936IGN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2936IGN#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 LTC2936IGN#PBF?
For technical support, including LTC2936IGN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2936IGN#PBF requirements.
6.How does Aetrix verify that LTC2936IGN#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2936IGN#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 LTC2936IGN#PBF meets industry standards.
7.What is the process for return or replacement of LTC2936IGN#PBF?
All LTC2936IGN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2936IGN#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 LTC2936IGN#PBF part is unused and in its original packaging.
Return procedure for LTC2936IGN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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