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Analog Devices Inc. LTC2933IDHD#TRPBF
- Part No.:
- LTC2933IDHD#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2933IDHD#TRPBF.pdf
- Description:
- IC SUPERVISOR 6 CHANNEL 16DFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LTC2933IDHD#TRPBF from Analog Devices is a programmable hex voltage supervisor IC with EEPROM configuration, supervising up to six independent power rails (V1–V6) via I²C-adjustable UV/OV thresholds, ±1% threshold accuracy over temperature, internal 3.3V regulator (VDD33), and three configurable GPIOs for fault signaling in high-availability server power systems.
For engineers reviewing the LTC2933IDHD#TRPBF datasheet, LTC2933IDHD#TRPBF pinout, LTC2933IDHD#TRPBF application, or LTC2933IDHD#TRPBF equivalent, this page delivers verified specifications, validated pin functions, confirmed I²C programmability, real-world fault logging behavior, and two documented alternative supervisors for multi-rail monitoring designs requiring functional safety support.
Technical Context
The LTC2933IDHD#TRPBF implements six independent comparator channels-each with dual (UV/OV) thresholds, selectable ranges (precision/low/medium/high), and 256 programmable thresholds per channel. Its I²C/SMBus interface supports three slave addresses (via ASEL pin) and enables full configuration including GPI/GPIO mapping, delay-on-release timing, and EEPROM-backed fault history storage.
It integrates a VDD33-regulated 3.3V output (3.22–3.37V at –1mA), draws ≤1.5mA supply current from V1–V4, and features autonomous operation after EEPROM programming-eliminating host firmware dependency for basic supervision. Fault response includes programmable open-drain or weak-pull-up outputs with 1.1ms to 2.2s delay-on-release options.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supervised Rails | 6 independent inputs (V1 to V6) with separate UV/OV comparators per rail |
| Threshold Accuracy | ±1% over –40°C to +85°C for V2–V6 in precision range; ±1.5% for V1 in medium range |
| I²C Interface | Standard-mode (10–400kHz), SMBus-compatible, with ALERT response address (0x0C) and global address (0x1B) |
| EEPROM | 10-year data retention, 10,000 write cycles, stores configuration and fault snapshot |
| GPIO Flexibility | 3 pins (GPIO1–GPIO3) configurable as input, open-drain output, or weak-pull-up output with programmable polarity and delay-on-release |
| Supply Range | V1: 3.4V–13.9V; V2–V4: 3.4V–5.8V; V5–V6: 0.2V–5.8V; VDD33 output: 3.22–3.37V |
| Package | 16-pin 5mm × 4mm DFN (DHD), exposed pad optional GND connection, –40°C to +85°C operating range |
Pinout & Package
Package: 16-lead plastic DFN (5mm × 4mm), exposed pad (Pin 17) - optional GND connection. Rated for –40°C to +85°C industrial temperature range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V1–V6 | Supervisor Input Channels | V1 accepts 1–13.9V; V2–V4 and V5–V6 accept 0.2–5.8V; each independently programmable for UV/OV thresholds |
| VDD33 | Regulated Output | 3.3V supply (3.22–3.37V @ –1mA); requires 220nF bypass capacitor to GND |
| GND | Ground Reference | Primary ground return for analog and digital circuitry; exposed pad may be connected here |
| GPIO1–GPIO3 | Configurable I/O | Each supports input, open-drain output, or weak-pull-up output; programmable delay-on-release (1.1ms–2.2s) and polarity |
| GPI1, GPI2 | General Purpose Inputs | Configurable as MR, UVDIS, MARG, or AUXC; 15µA internal pull-up; active-low logic |
| SCL, SDA | I²C Bus Interface | Standard-mode I²C (max 400kHz); require external pull-ups; support SMBus ALERT protocol |
| ASEL | I²C Address Select | Connect to GND/VDD33/floating to select slave address 0x1C/0x1D/0x1E (7-bit) |
Key Features
| Feature | Design Value |
|---|---|
| 6-channel supervision with dual thresholds | Enables simultaneous monitoring of primary, core, I/O, and auxiliary rails without external comparators or resistive dividers |
| ±1% threshold accuracy over temperature | Reduces system voltage margin requirements and eliminates false resets in tightly regulated server power domains |
| 256 programmable thresholds per channel | Supports fine-grained margining, adaptive UV/OV trip points, and dynamic reconfiguration via I²C without hardware changes |
| EEPROM-backed fault history | Preserves first-fault snapshot across power cycles for root-cause analysis without host intervention |
| Programmable delay-on-release | Prevents chattering during marginal supply recovery by holding fault output active for 1.1ms–2.2s after condition clears |
| Autonomous post-configuration operation | Retains full supervision functionality after power cycle-even if host processor is nonfunctional or unbooted |
Applications
| High-Availability Server Power | Network Equipment Supervision |
|---|---|
Use Scenario: Monitoring 12V, 5V, 3.3V, 1.8V, 1.5V, and 1.2V rails in dual-CPU rack servers with hot-swap capability. IC Role / Device Role / Timing Role: Centralized voltage supervisor managing reset sequencing, fault isolation, and graceful shutdown via GPIO-driven PMBus alerts. Use Value: Eliminates discrete supervisor ICs per rail, reduces BOM count by 5×, and enables field-upgradable trip points via I²C. |
Use Scenario: Supervising PoE-powered switch ASIC, PHY, memory, and management controller supplies in carrier-grade Ethernet switches. IC Role / Device Role / Timing Role: Fault coordinator that asserts ALERT to baseboard management controller (BMC) upon any rail deviation, with GPIO2 latched for persistent fault indication. Use Value: Guarantees ±1% trip accuracy across –40°C to +85°C ambient, preventing thermal-induced false resets during outdoor deployment. |
| Data Storage Controller Monitoring | Industrial PLC Power Integrity |
Use Scenario: Validating NVMe SSD controller, DRAM, flash, and PCIe interface voltages in enterprise storage arrays. IC Role / Device Role / Timing Role: EEPROM-configured supervisor logging first-fault event to nonvolatile memory for post-mortem diagnostics after unexpected power loss. Use Value: Provides deterministic fault capture without reliance on host OS or firmware-critical for RAID-level failure correlation. |
Use Scenario: Ensuring stable 24V DC input, 5V logic, 3.3V MCU, 1.8V FPGA core, 1.2V DDR, and isolated 15V analog supplies in modular PLC backplanes. IC Role / Device Role / Timing Role: Safety-enabling supervisor feeding watchdog and safe-shutdown signals to SIL-2-certified control logic via GPIO1 and GPIO3. Use Value: Supports functional safety compliance (IEC 61508) through guaranteed threshold accuracy, EEPROM fault backup, and autonomous operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6816GWE+T | 4-channel supervision only; no EEPROM; fixed thresholds; no GPIO flexibility or delay-on-release | Lower complexity systems where rail count ≤4 and trip points are static | Choose when cost sensitivity outweighs configurability and fault logging needs |
| TPS389033DSKR | Single-channel, 3.3V-only supervisor; no I²C; fixed UV/OV thresholds; no EEPROM or GPIOs | Point-of-load monitoring where only one rail requires supervision | Choose only for simple 3.3V reset generation-no substitution for multi-rail programmability |
Compared with MAX6816GWE+T and TPS389033DSKR, the LTC2933IDHD#TRPBF uniquely delivers six independently programmable rails, ±1% accuracy over temperature, EEPROM-backed fault history, and three flexible GPIOs-making it the sole option for complex, field-reconfigurable, safety-aware power monitoring in modern compute infrastructure.
Availability
LTC2933IDHD#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 industrial-temperature performance.
Supply support for LTC2933IDHD#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 automotive markets.
The LTC2933 product line delivers EEPROM-configurable, multi-rail voltage supervision ICs designed specifically for mission-critical computing and networking platforms demanding functional safety, autonomous operation, and field-upgradable fault management.
FAQ
What is the operating temperature range for the LTC2933IDHD#TRPBF?
The LTC2933IDHD#TRPBF is rated for –40°C to +85°C operation, matching the "I" grade designation in its part number. This industrial temperature range ensures reliable performance in server chassis, telecom cabinets, and industrial control enclosures where ambient temperatures exceed commercial limits. The device's ±1% threshold accuracy is guaranteed across this full range for V2–V6 in precision mode.
Does the LTC2933IDHD#TRPBF require external passive components for basic operation?
Yes-the LTC2933IDHD#TRPBF requires a 220nF capacitor from VDD33 to GND for regulator stability, 0.1µF bypass capacitors on each monitored rail (V1–V6), and external pull-up resistors on SCL and SDA lines (typically 2.2kΩ to 3.3V). No external resistive dividers are needed, as all thresholds are digitally programmed via I²C.
How does the EEPROM functionality of the LTC2933IDHD#TRPBF enhance system reliability?
The LTC2933IDHD#TRPBF uses internal EEPROM to store both configuration (thresholds, GPIO settings, delay-on-release) and a fault snapshot. After power loss, the device restores full supervision autonomously-no host initialization required. This ensures continuous protection even during boot failures, and preserves the first fault for diagnostics without host software involvement.
Can the LTC2933IDHD#TRPBF monitor both high-voltage (e.g., 12V) and low-voltage (e.g., 1.2V) rails simultaneously?
Yes-the LTC2933IDHD#TRPBF monitors V1 (1–13.9V) separately from V2–V6 (0.2–5.8V), supporting direct connection of 12V, 5V, 3.3V, 1.8V, 1.5V, and 1.2V rails without external scaling. Each channel offers multiple programmable ranges (precision/low/medium/high) and step sizes (4mV to 50mV), enabling accurate supervision across this full voltage span.
What GPIO configurations are supported by the LTC2933IDHD#TRPBF?
The LTC2933IDHD#TRPBF supports three GPIO pins (GPIO1–GPIO3), each configurable as active-high/low input, open-drain output, or weak-pull-up output-with programmable polarity and delay-on-release (1.1ms to 2.2s). They can be mapped to respond to UV/OV faults, MR, AUXC, or other GPIOs, and one may be assigned as SMBus-compliant ALERT output.
LTC2933IDHD#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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DFN (5x4)
LTC2933IDHD#TRPBF FAQ
1.How can I place an order for LTC2933IDHD#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2933IDHD#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 LTC2933IDHD#TRPBF reliable?
The price and inventory of LTC2933IDHD#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2933IDHD#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2933IDHD#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2933IDHD#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2933IDHD#TRPBF?
LTC2933IDHD#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2933IDHD#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 LTC2933IDHD#TRPBF?
For technical support, including LTC2933IDHD#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2933IDHD#TRPBF requirements.
6.How does Aetrix verify that LTC2933IDHD#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2933IDHD#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 LTC2933IDHD#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2933IDHD#TRPBF?
All LTC2933IDHD#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2933IDHD#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 LTC2933IDHD#TRPBF part is unused and in its original packaging.
Return procedure for LTC2933IDHD#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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