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Analog Devices Inc. LTC2936CGN#TRPBF
- Part No.:
- LTC2936CGN#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 24-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2936CGN#TRPBF.pdf
- Description:
- IC SUPERVISOR 6 CHANNEL 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,444
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Product details
Overview
LTC2936CGN#TRPBF 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 power rails (0.2V–5.8V range), offers ±1% threshold accuracy, 7.5µs comparator response, and autonomous fault logging-used in telecom server power sequencing and FPGA supply monitoring.
For engineers reviewing the LTC2936CGN#TRPBF datasheet, LTC2936CGN#TRPBF pinout, LTC2936CGN#TRPBF application, or LTC2936CGN#TRPBF equivalent, key selection criteria include I²C-configurable UV/OV thresholds per channel, programmable GPIO delay-on-release (1ms–1.64s), EEPROM-backed fault history, and dual-supply operation (VPWR: 3.4V–13.9V, VDD33: 3.3V regulator).
Technical Context
The LTC2936CGN#TRPBF implements six independent analog comparators with user-selectable precision/low/medium input ranges, each supporting separate overvoltage and undervoltage trip points programmed via I²C. Threshold resolution is 4mV (precision), 10mV (low), or 20mV (medium) per LSB, with guaranteed ±1% accuracy in the medium range for Vn > 3V.
It integrates a 3.3V internal regulator (VDD33), supports SMBus-compatible I²C at up to 400kHz, and features three configurable GPIOs with open-drain or weak-pull-up output modes, plus two GPI inputs assignable to MR/UVDIS/MARG/WP/AUXC functions. Fault status and history are stored in nonvolatile EEPROM with 10-year retention and 10,000-cycle endurance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supervised Channels | 6 independent voltage inputs (V1–V6), each with programmable UV/OV thresholds |
| Threshold Accuracy | ±1% max (medium range, Vn > 3V); enables tighter system voltage margins vs. ±3–5% supervisors |
| Comparator Response | 7.5µs (20 LSB overdrive); ensures fast fault detection for critical 12V/5V/3.3V/1.8V rails |
| Supply Range | VPWR: 3.4V–13.9V; VDD33: internally regulated 3.3V (±2.3%) or externally supplied |
| I²C Interface | SMBus-compatible, 400kHz max clock; 9 selectable slave addresses via ASEL0/ASEL1 pins |
| EEPROM Endurance | 10,000 write cycles; retains fault history and configuration without host intervention |
| Operating Temp | 0°C to +70°C (C-grade); validated for commercial-server and network equipment environments |
Pinout & Package
Package: 24-lead (4mm × 5mm) plastic QFN (UFD), exposed pad (Pin 25) connected to GND. RoHS-compliant, lead-free finish, tape-and-reel packaging (TRPBF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V1–V6 | Analog input | Monitor six independent supply rails; support 0.2–5.8V ranges with 4/10/20mV LSB steps |
| CMP1–CMP6 | Open-drain output | Assert low on UV/OV fault; internally pulled up to VDD33 (15µA) |
| GPIO1–GPIO3 | Configurable I/O | Programmable as input, open-drain output, or weak-pull-up; support ALERT, delay-on-release, and cross-mapping |
| GPI1, GPI2 | General-purpose input | Selectable function: MR, UVDIS, MARG, WP, or AUXC; 15µA internal pull-up to VDD33 |
| SDA, SCL | I²C bidirectional bus | Standard SMBus interface; requires external pull-ups; supports 400kHz operation |
| VPWR, VDD33, GND | Power terminals | VPWR powers internal regulator (3.4–13.9V); VDD33 is regulated 3.3V output or external supply input |
| ASEL0, ASEL1 | Address select | Set one of nine I²C slave addresses (0x50–0x5A) by tying to GND/VDD33 or leaving floating |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-based autonomous operation | Stores configuration and fault history; enables "set-and-forget" supervision without host firmware involvement |
| 256 programmable thresholds per channel | Enables precise rail margining and adaptive fault detection across diverse supply voltages (1.2V, 1.8V, 2.5V, 3.3V, 5V, 12V) |
| Programmable GPIO delay-on-release | Eight selectable delays (1ms–1.64s); prevents chatter during supply recovery and simplifies debounce logic |
| Dual-supply flexibility | Operates from VPWR (3.4–13.9V) with internal 3.3V regulator, or directly from external 3.3V supply (VPWR = VDD33) |
| ALERT output compliance | Single-wire SMBus ALERT signal; latched fault notification compatible with standard system management controllers |
Applications
| Telecom Power Sequencing | Server Board Management |
|---|---|
|
Use Scenario: Monitoring 12V, 5V, 3.3V, 1.8V, 1.2V, and 0.9V rails in a 1RU telecom switch with strict startup/shutdown sequencing. IC Role / Device Role / Timing Role: Hex supervisor provides independent OV/UV detection per rail, triggers sequenced resets via CMP outputs, and logs brownout events to EEPROM. Use Value: Eliminates discrete supervisor ICs and external timing components; reduces BOM count by 6× while enabling post-fault diagnostics via I²C-readable history. |
Use Scenario: Real-time voltage health monitoring across CPU, memory, and PCIe power domains in an x86 server motherboard. IC Role / Device Role / Timing Role: Configured with GPIO1 as ALERT output and GPIO2/3 as fault-triggered reset signals; GPI1 used as manual reset input. Use Value: Enables BMC-initiated corrective action (e.g., throttling or shutdown) within <10µs of rail deviation, meeting IPMI 2.0 watchdog timing requirements. |
| FPGA Configuration Integrity | Industrial PLC Power Supervision |
|
Use Scenario: Ensuring stable 1.2V core, 2.5V I/O, and 3.3V auxiliary supplies before releasing FPGA configuration reset. IC Role / Device Role / Timing Role: Uses V1–V3 for rail monitoring, CMP1–CMP3 to drive FPGA PROG_B and INIT_B lines, and EEPROM to retain last-fault signature. Use Value: Prevents partial configuration and bitstream corruption by enforcing strict voltage-valid window prior to configuration start. |
Use Scenario: Supervising redundant 24V DC inputs, isolated 5V logic, and 3.3V microcontroller rails in an industrial PLC with extended temperature operation. IC Role / Device Role / Timing Role: GPI2 configured as margin test input; GPIO3 set as open-drain fault output tied to PLC safety controller. Use Value: Supports functional safety diagnostics (IEC 61508) via programmable margin testing and deterministic fault response with <1ms latency. |
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 interface | Limited to simpler systems requiring only basic reset generation without logging or reconfiguration | Choose when cost sensitivity outweighs configurability needs and system has ≤4 rails |
| TPS3808G33DBVR | Single-channel supervisor, 3.3V fixed threshold, no I²C, no EEPROM, 350ms reset timeout | Suitable only for dedicated 3.3V rail monitoring; lacks multi-rail coordination and fault history | Use where only one supply requires supervision and deterministic fixed-delay reset suffices |
Compared with MAX6816ESE+ and TPS3808G33DBVR, the LTC2936CGN#TRPBF delivers six-channel programmability, autonomous EEPROM-based fault retention, and I²C reconfigurability-making it uniquely suited for complex, serviceable infrastructure equipment where diagnostic traceability and field-upgradable supervision logic are required.
Availability
LTC2936CGN#TRPBF is available at Aetrix Electronics and suitable for telecom equipment, network servers, and data storage systems requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant manufacturing.
Supply support for LTC2936CGN#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. (acquired Linear Technology in 2017) designs high-performance analog, mixed-signal, and power management ICs for precision instrumentation, communications, and industrial applications.
The LTC2936CGN#TRPBF belongs to Linear's precision power supervision product line, engineered for high-availability computing systems where deterministic fault response, EEPROM-backed diagnostics, and multi-rail coordination are essential.
FAQ
What is the operating temperature range for the LTC2936CGN#TRPBF?
The LTC2936CGN#TRPBF is rated for 0°C to +70°C ambient operation (Commercial grade). This specification is confirmed in the Order Information table and Electrical Characteristics section of the official datasheet. The device uses the GN package variant (24-lead SSOP) but the #TRPBF suffix indicates the QFN (UFD) package with tape-and-reel delivery-both C-grade versions share the same temperature range. Derating applies above 85°C for EEPROM retention.
Does the LTC2936CGN#TRPBF require external pull-up resistors on SDA and SCL lines?
Yes, the LTC2936CGN#TRPBF requires external pull-up resistors on both SDA and SCL lines, as explicitly stated in the Pin Functions section. The internal circuitry does not provide active pull-ups for these I²C bus lines. Recommended values depend on bus capacitance and speed; typical designs use 2.2kΩ to 4.7kΩ pull-ups to VPWR or VDD33, consistent with SMBus 400kHz timing requirements.
Can the LTC2936CGN#TRPBF monitor sub-1V supplies like 0.85V or 0.9V?
Yes, the LTC2936CGN#TRPBF supports monitoring down to 0.2V in its precision range (4mV step size), fully covering 0.85V and 0.9V rails. The datasheet specifies VRANGE = 0.2V–1.2V (precision), 0.5V–3V (low), and 1V–5.8V (medium), with VERR = ±1% accuracy applicable to the precision range for 0.6V < Vn < 1.2V. This makes it suitable for modern FPGA core and ASIC I/O supply supervision.
How is fault history preserved after power loss in the LTC2936CGN#TRPBF?
Fault history is preserved after power loss via the internal EEPROM in the LTC2936CGN#TRPBF. The HISTORY_WORD register contents and first-fault snapshot (BACKUP_WORD) are automatically written to EEPROM upon fault occurrence. This nonvolatile storage retains data for ≥10 years and survives ≥10,000 write cycles, enabling post-mortem analysis without host intervention or backup power.
What package type does the LTC2936CGN#TRPBF use?
The LTC2936CGN#TRPBF uses the 24-lead (4mm × 5mm) plastic QFN package (UFD), with exposed thermal pad (Pin 25) connected to GND. This is confirmed in the Order Information table, where "LTC2936CUFD#TRPBF" maps to the UFD package and "C" grade (0°C to +70°C). The "GN" in the part number refers to the base family, not the SSOP package variant.
LTC2936CGN#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SSOP
LTC2936CGN#TRPBF FAQ
1.How can I place an order for LTC2936CGN#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2936CGN#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 LTC2936CGN#TRPBF reliable?
The price and inventory of LTC2936CGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2936CGN#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2936CGN#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2936CGN#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2936CGN#TRPBF?
LTC2936CGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2936CGN#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 LTC2936CGN#TRPBF?
For technical support, including LTC2936CGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2936CGN#TRPBF requirements.
6.How does Aetrix verify that LTC2936CGN#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2936CGN#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 LTC2936CGN#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2936CGN#TRPBF?
All LTC2936CGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2936CGN#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 LTC2936CGN#TRPBF part is unused and in its original packaging.
Return procedure for LTC2936CGN#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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