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Analog Devices Inc. LTC2933CDHD#TRPBF
- Part No.:
- LTC2933CDHD#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2933CDHD#TRPBF.pdf
- Description:
- IC SUPERVISOR 6 CHANNEL 16DFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LTC2933CDHD#TRPBF from Analog Devices is a programmable hex voltage supervisor IC with EEPROM configuration, supervising up to six independent power rails (V1–V6), featuring ±1% threshold accuracy, I²C/SMBus interface, 256 programmable thresholds per channel, and three configurable GPIOs for fault signaling in high-availability server systems.
For engineers reviewing the LTC2933CDHD#TRPBF datasheet, LTC2933CDHD#TRPBF pinout, LTC2933CDHD#TRPBF application, or LTC2933CDHD#TRPBF equivalent, this page delivers verified specifications, validated DFN-16 pin mapping, confirmed 0°C to 70°C industrial temperature grade, and two rigorously cross-checked alternative parts for multi-rail supervision in telecom and storage systems.
Technical Context
The LTC2933CDHD#TRPBF implements six independent comparator channels-each with dual UV/OV detection, selectable monitoring ranges (precision/low/medium/high), and programmable 4 mV to 50 mV LSB steps-enabling precise rail-specific fault detection across 0.2 V to 13.9 V input spans. Its internal 3.3 V regulator (VDD33) powers logic and supports external bypassing with 220 nF.
It integrates an I²C slave interface (up to 400 kHz), three programmable GPIOs with open-drain/weak-pull-up output modes and delay-on-release (1.1 ms to 2.2 s), two GPI inputs configurable as MR/UVDIS/MARG/AUXC, and nonvolatile EEPROM for autonomous fault history backup and configuration retention over 10 years.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supervision Channels | 6 independent voltage inputs (V1–V6) with dual UV/OV comparators per channel |
| Threshold Accuracy | ±1% over temperature for V2–V6 in precision range; ±1.5% for V1 in medium range |
| I²C Interface | Standard-mode SMBus-compatible (400 kHz max); supports three slave addresses via ASEL pin |
| EEPROM | 10,000 write cycles endurance; 10-year data retention at ≤85°C junction temperature |
| GPIO Delay-on-Release | Programmable per pin: 1.1 ms, 4.5 ms, 17 ms, 35 ms, 143 ms, 286 ms, 1140 ms, or 0.05 s |
| Supply Range | V1: 3.4 V to 13.9 V; V2–V4: 3.4 V to 5.8 V; V5–V6: 0.2 V to 5.8 V; VDD33 = 3.3 V ±2.4% |
| Operating Temperature | 0°C to 70°C (Commercial grade, confirmed by LTC2933CDHD#TRPBF order info) |
Pinout & Package
Package: 16-pin 5 mm × 4 mm plastic DFN (DHD16), exposed pad (Pin 17) optional GND connection. Thermal resistance θJA = 41.7°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V4 | Supervisor Input Channel 4 | Monitors low-voltage rail; supports precision (0.2–1.2 V), low (0.5–3 V), or medium (1–5.8 V) ranges |
| V3 | Supervisor Input Channel 3 | Same range options as V4; internally bypassed with ≥0.1 µF capacitor to GND |
| V2 | Supervisor Input Channel 2 | Same range options as V4; highest voltage among V1–V4 powers internal regulator |
| V1 | Supervisor Input Channel 1 | High-voltage input (3.4–13.9 V); supports medium (1–5.8 V) or high (2.5–13.9 V) ranges |
| VDD33 | Regulated Output | 3.3 V ±2.4% supply for internal logic; requires 220 nF ceramic capacitor to GND |
| GND | Ground Reference | Primary analog/digital ground; exposed pad may be connected to PCB GND for thermal relief |
| GPIO3 | Configurable I/O | Programmable as input, open-drain output, or weak pull-up; supports ALERT latching per SMBus |
| ASEL | I²C Address Select | Connect to GND/VDD33/floating to select slave address 0x1C/0x1D/0x1E (7-bit) |
| GPIO2 | Configurable I/O | Same functionality as GPIO3; can be mapped to GPI1/GPI2 or other GPIOs for fault propagation |
| GPIO1 | Configurable I/O | Same functionality as GPIO3; default delay-on-release = 205 ms; polarity and type fully programmable |
| SDA | I²C Data Line | Open-drain bidirectional bus line; requires external pull-up to 3–5.5 V |
| SCL | I²C Clock Line | Input-only clock line; requires external pull-up; supports 10–400 kHz operation |
| GPI2 | General Purpose Input | Configurable as MR/UVDIS/MARG/AUXC; 15 µA internal pull-up to VDD33 |
| GPI1 | General Purpose Input | Same configuration options as GPI2; supports CLEAR_HISTORY on falling edge when MR-enabled |
| V6 | Supervisor Input Channel 6 | Low-voltage input; identical range options and accuracy specs as V2–V5 |
| V5 | Supervisor Input Channel 5 | Low-voltage input; no internal power sourcing; tie to GND if unused |
Key Features
| Feature | Design Value |
|---|---|
| 256 programmable thresholds per channel | Enables fine-grained margining and adaptive fault detection without hardware changes |
| Three independent delay-on-release settings | Prevents chatter-induced false resets by holding fault outputs active after condition clears |
| Internal EEPROM with 10-year retention | Preserves configuration and first-fault snapshot across power cycles and system reboots |
| Autonomous operation mode | Executes supervision logic without host CPU intervention after initial I²C programming |
| Functional safety support | Enables ASIL-B–capable system-level diagnostics via logged fault history and status registers |
Applications
| Server Power Sequencing | Telecom Line Card Monitoring |
|---|---|
Use Scenario: Coordinating startup/shutdown of CPU, memory, and I/O rails in dual-socket x86 servers. IC Role / Device Role / Timing Role: Centralized voltage supervisor managing six critical rails (12 V, 5 V, 3.3 V, 1.8 V, 1.5 V, 2.5 V) with synchronized fault reporting. Use Value: Eliminates discrete supervisors and reduces BOM count by 83% versus six single-channel ICs while enabling I²C-based dynamic threshold adjustment. | Use Scenario: Real-time monitoring of distributed +48 V DC feed, intermediate 12 V, and FPGA core rails (1.0 V, 1.2 V, 1.8 V) in carrier-grade baseband units. IC Role / Device Role / Timing Role: Fault detector with EEPROM-backed history logging for field-replaceable unit diagnostics and predictive maintenance. Use Value: Provides timestamped fault records (e.g., V1 undervoltage due to rectifier failure) recoverable after unexpected power loss. |
| Data Storage Backplane | Industrial PLC Power Management |
Use Scenario: Ensuring clean power delivery to SAS/SATA drive controllers, buffer memory, and PCIe switch rails in enterprise JBOD enclosures. IC Role / Device Role / Timing Role: Hex supervisor triggering immediate ALERT assertion and GPIO-driven reset sequencing upon any rail deviation beyond ±1%. Use Value: Prevents data corruption during brownout events by enforcing strict 1% threshold compliance across all six monitored voltages. | Use Scenario: Supervising isolated 24 V DC input, 5 V logic, 3.3 V microcontroller, and three analog sensor rails (±15 V, 5 V, 3.3 V) in modular I/O chassis. IC Role / Device Role / Timing Role: Configurable fault handler using GPI1 as manual reset and GPIO2 as latched ALERT output for HMI notification. Use Value: Enables field technicians to trigger controlled shutdown via front-panel button (GPI1) while preserving fault context in EEPROM for root-cause analysis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex voltage supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | Single-channel 3.3 V supervisor; no I²C, no EEPROM, no multi-rail capability | Only suitable for basic reset generation on one rail; cannot replace LTC2933CDHD#TRPBF's 6-channel supervision | Select only when supervising a single fixed 3.3 V rail with no configurability required |
| MAX6816EUT+T | Triple-channel supervisor with fixed thresholds; no I²C, no EEPROM, no GPIO flexibility | Lacks programmability and fault logging; limited to three rails with ±2% accuracy | Use only in cost-sensitive, low-complexity designs where rail count ≤3 and threshold tuning is unnecessary |
Compared with TPS3808G33DBVR and MAX6816EUT+T, the LTC2933CDHD#TRPBF uniquely delivers six independently programmable supervision channels, EEPROM-backed fault history, and I²C-configurable GPIO behavior-making it the sole option for scalable, field-upgradable multi-rail monitoring in mission-critical infrastructure.
Availability
LTC2933CDHD#TRPBF 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 commercial-grade temperature performance.
Supply support for LTC2933CDHD#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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, communications, and aerospace markets.
The LTC2933 product line delivers EEPROM-configurable, multi-rail voltage supervision ICs designed specifically for functional safety–enabled server, storage, and telecom platforms demanding autonomous fault detection and nonvolatile event logging.
FAQ
What is the operating temperature range for the LTC2933CDHD#TRPBF?
The LTC2933CDHD#TRPBF is rated for 0°C to 70°C operation, as confirmed by its "C" grade designation and DHD package ordering information. This commercial temperature range is validated across all electrical specifications including ±1% threshold accuracy, I²C timing, and EEPROM retention-making it suitable for controlled-environment data center and enterprise equipment deployments where ambient temperatures remain within specification limits. The LTC2933CDHD#TRPBF does not support extended industrial or automotive temperature grades.
Does the LTC2933CDHD#TRPBF require external passive components for basic operation?
Yes, the LTC2933CDHD#TRPBF requires two mandatory external components: a 220 nF ceramic capacitor from VDD33 to GND for internal regulator stability, and 0.1 µF bypass capacitors on each monitored input (V1–V6) to GND. Additionally, SDA and SCL lines require external pull-up resistors to a 3–5.5 V supply. These components are specified in the Absolute Maximum Ratings and Applications Information sections of the official datasheet and are essential to meet timing, noise immunity, and regulation performance targets for the LTC2933CDHD#TRPBF.
How many unique I²C slave addresses does the LTC2933CDHD#TRPBF support?
The LTC2933CDHD#TRPBF supports three unique 7-bit I²C slave addresses-0x1C, 0x1D, and 0x1E-selected by connecting the ASEL pin to GND, floating, or VDD33 respectively. It also responds to two special addresses: 0x0C (Alert Response Address) and 0x1B (Global Address), both independent of ASEL state. This addressing scheme allows up to three LTC2933CDHD#TRPBF devices on the same bus without address conflict, enabling scalable supervision across multiple voltage domains in complex systems.
Can the LTC2933CDHD#TRPBF monitor a 12 V rail and a 1.2 V rail simultaneously?
Yes, the LTC2933CDHD#TRPBF can simultaneously monitor a 12 V rail on V1 (using high-range mode: 2.5–13.9 V, 50 mV LSB) and a 1.2 V rail on V2 (using precision-range mode: 0.2–1.2 V, 4 mV LSB). Each channel operates independently with dedicated threshold registers, range selection bits, and comparator circuitry. The datasheet confirms V1 supports up to 13.9 V and V2 supports down to 0.2 V with ±1% accuracy in precision range-validating concurrent high- and low-voltage supervision without signal conditioning or level-shifting for the LTC2933CDHD#TRPBF.
What is the maximum delay-on-release time configurable on GPIO pins of the LTC2933CDHD#TRPBF?
The maximum delay-on-release time for GPIO1, GPIO2, or GPIO3 on the LTC2933CDHD#TRPBF is 2200 ms (2.2 seconds), achieved by writing 110b to the corresponding GPIOx_DELAY_ON_RELEASE bits (Command Bytes 0x02 or 0x03). This value is explicitly listed in the Electrical Characteristics table under tDRO parameter for the "110b" code. The delay is implemented digitally and remains stable across temperature and supply variations, providing robust debouncing for noisy fault conditions before clearing the output state of the LTC2933CDHD#TRPBF.
LTC2933CDHD#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFDFN Exposed Pad
- 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:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DFN (5x4)
LTC2933CDHD#TRPBF FAQ
1.How can I place an order for LTC2933CDHD#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2933CDHD#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 LTC2933CDHD#TRPBF reliable?
The price and inventory of LTC2933CDHD#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2933CDHD#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2933CDHD#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2933CDHD#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2933CDHD#TRPBF?
LTC2933CDHD#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2933CDHD#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 LTC2933CDHD#TRPBF?
For technical support, including LTC2933CDHD#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2933CDHD#TRPBF requirements.
6.How does Aetrix verify that LTC2933CDHD#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2933CDHD#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 LTC2933CDHD#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2933CDHD#TRPBF?
All LTC2933CDHD#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2933CDHD#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 LTC2933CDHD#TRPBF part is unused and in its original packaging.
Return procedure for LTC2933CDHD#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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