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Analog Devices Inc. LTC2933CGN#TRPBF
- Part No.:
- LTC2933CGN#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2933CGN#TRPBF.pdf
- Description:
- IC SUPERVISOR 6 CHANNEL 16SSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LTC2933CGN#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 power systems.
For engineers reviewing the LTC2933CGN#TRPBF datasheet, LTC2933CGN#TRPBF pinout, LTC2933CGN#TRPBF application, or LTC2933CGN#TRPBF equivalent, key selection considerations include guaranteed ±1% UV/OV threshold accuracy over temperature, programmable delay-on-release for GPIO fault outputs, internal 3.3V regulator (VDD33), EEPROM-backed fault history, and support for precision-range monitoring down to 0.2V on V2–V6.
Technical Context
The LTC2933CGN#TRPBF implements dual-comparator per channel architecture (UV and OV) with independently programmable thresholds across three ranges per input-precision (0.2–1.2V, 4mV step), low (0.5–3V, 10mV step), and medium (1–5.8V, 20mV step) for V2–V6, plus high range (2.5–13.9V, 50mV step) for V1. Thresholds are stored in volatile registers and backed up to nonvolatile EEPROM.
It integrates an I²C slave interface (up to 400kHz), ASEL-selectable 7-bit addresses (0x1C/0x1D/0x1E), SMBus ALERT response (0x0C), and global address (0x1B); GPIOs support open-drain or weak-pull-up output modes with polarity and delay-on-release (0.001–2200ms) programmability, while GPI1/GPI2 serve as MR/UVDIS/MARG/AUXC inputs with 15µA internal pull-ups.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supervised 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 (10–400kHz) compatible; supports SMBus ALERT and global addressing |
| EEPROM | 10-year data retention, 10,000 write cycles; stores configuration, fault history, and backup snapshot |
| GPIO Delay-on-Release | Programmable from 0.001ms to 2200ms in 8 discrete steps per GPIO1–GPIO3 |
| VDD33 Regulator | 3.3V ±2.4% output (3.22–3.37V) with 5.5mA current limit; requires 220nF bypass capacitor |
| Supply Range | V1: 3.4–13.9V; V2–V4: 3.4–5.8V; V5–V6: 0–5.8V; VDD33: 3.22–3.37V |
Pinout & Package
Package: 16-lead plastic SSOP (GN), 0°C to 70°C operating temperature range. Exposed pad not present in SSOP variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V5, V6 | Low-voltage supervisor inputs | Monitor rails as low as 0.2V; support precision-range thresholds with 4mV resolution |
| GPI1, GPI2 | General-purpose inputs | Configurable as manual reset (MR), UV disable (UVDIS), margin (MARG), or auxiliary comparator (AUXC) |
| SCL, SDA | I²C bus interface | Require external pull-up resistors; support 400kHz clock; tolerate 0–6V input |
| GPIO1–GPIO3 | Configurable I/O pins | Support open-drain or weak-pull-up output; map to other GPIOs or GPIs; drive ALERT per SMBus spec |
| VDD33 | Internal 3.3V regulator output | Power source for internal logic; requires 220nF ceramic capacitor to GND |
| GND | Ground reference | Primary return path for all analog and digital circuitry; connects to PCB ground plane |
| ASEL | I²C address select | Determines 7-bit slave address (0x1C/0x1D/0x1E) via connection to GND/VDD33/floating |
Key Features
| Feature | Design Value |
|---|---|
| 256 programmable thresholds per channel | Enables fine-grained UV/OV trip point tuning across multiple voltage ranges without hardware change |
| EEPROM-backed fault history | Preserves first-fault snapshot and status logs across power cycles for root-cause analysis |
| Three-range per-channel monitoring | Supports system-level flexibility: precision (0.2V), low (0.5V), and medium/high voltage rails in one device |
| Programmable GPIO delay-on-release | Prevents nuisance resets by holding fault output active for user-defined duration after condition clears |
| Autonomous operation after configuration | Runs without host intervention once EEPROM-stored settings are restored at power-up |
Applications
| High-Availability Server Power | Telecom Line Card Supervision |
|---|---|
Use Scenario: Monitoring 12V, 5V, 3.3V, 1.8V, 1.5V, and 2.5V rails in dual-CPU server motherboards with hot-swap capability. IC Role / Device Role / Timing Role: Centralized voltage supervisor providing coordinated UV/OV fault detection, latched ALERT signaling, and EEPROM-backed event logging. Use Value: Enables deterministic power sequencing and fault isolation without software polling, reducing boot-time validation overhead by >40%. | Use Scenario: Supervising distributed DC-DC converters on telecom line cards where space and BOM count are constrained. IC Role / Device Role / Timing Role: Single-chip solution replacing six discrete supervisors and discrete EEPROM, with I²C-configurable thresholds per rail. Use Value: Reduces component count by 70% and PCB area by 35% versus discrete supervisor + microcontroller approach. |
| Data Storage Controller Board | Industrial PLC Backplane |
Use Scenario: Validating stable operation of NVMe SSD controller rails (12V, 3.3V, 1.8V, 1.2V, 0.9V, 0.75V) before enabling PCIe link training. IC Role / Device Role / Timing Role: Pre-boot supervisor enforcing strict voltage monotonicity and timing windows before firmware handoff. Use Value: Guarantees ±1% threshold accuracy across –40°C to 70°C, eliminating need for calibration in field-deployed units. | Use Scenario: Monitoring redundant 24V, 5V, 3.3V, and isolated 15V analog supply rails in modular PLC backplanes with extended temperature requirements. IC Role / Device Role / Timing Role: Fault manager with GPIO-mapped redundancy control, using GPI1/GPI2 to enable/disable backup supplies during brownout. Use Value: Supports functional safety via autonomous EEPROM-stored fault history and programmable delay-on-release for controlled failover. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2937IGN#TRPBF | Wider temperature range (–40°C to 85°C); identical pinout and register map; adds watchdog timer and reset timeout control | Required for industrial environments exceeding 70°C ambient; suitable when system-level watchdog functionality is needed | Select LTC2937IGN#TRPBF if extended temperature operation or integrated watchdog is required; otherwise LTC2933CGN#TRPBF offers cost-optimized supervision-only function |
| TPS3808G33DBVR | Single-channel 3.3V supervisor; no I²C interface; fixed threshold (±0.5%); no EEPROM or GPIOs | Only monitors one rail; lacks configurability, fault history, or multi-rail coordination capability | Choose TPS3808G33DBVR only for simple single-rail reset generation where programmability and diagnostics are unnecessary |
Compared with LTC2937IGN#TRPBF, LTC2933CGN#TRPBF provides identical supervision architecture and EEPROM configuration at lower cost and reduced feature set, while TPS3808G33DBVR serves only basic reset generation-neither offers the six-rail programmability, fault logging, or GPIO flexibility of LTC2933CGN#TRPBF.
Availability
LTC2933CGN#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 traceable sourcing.
Supply support for LTC2933CGN#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets.
The LTC2933 product line delivers EEPROM-configurable, multi-rail voltage supervision for mission-critical infrastructure where deterministic fault response, autonomous operation, and long-term configuration integrity are essential.
FAQ
What is the operating temperature range for the LTC2933CGN#TRPBF?
The LTC2933CGN#TRPBF is rated for 0°C to 70°C operation, as indicated by the 'C' grade suffix in its part number. This commercial-grade specification applies to the GN (SSOP) package variant and is validated across all electrical parameters in the datasheet's "Operating Temperature Range" section. The device maintains ±1% threshold accuracy for V2–V6 in precision range across this full range. For extended temperature operation, consider the 'I' grade variant LTC2933IGN#TRPBF.
Does the LTC2933CGN#TRPBF require external pull-up resistors on SCL and SDA lines?
Yes, the LTC2933CGN#TRPBF requires external pull-up resistors on both SCL and SDA lines to ensure proper I²C bus operation. The datasheet specifies that these lines must be high when idle and defines maximum capacitive load (400pF) and rise/fall time constraints. Typical values range from 2.2kΩ to 10kΩ depending on bus capacitance and desired speed (up to 400kHz). Internal pull-ups are not provided on these pins.
How many voltage thresholds can be programmed per channel on the LTC2933CGN#TRPBF?
The LTC2933CGN#TRPBF supports 256 programmable threshold values per channel - 128 for undervoltage (UV) and 128 for overvoltage (OV) detection - selectable across up to three distinct voltage ranges (precision, low, medium/high) per input (V1–V6). Each threshold is encoded in an 8-bit DAC within the Vn_THR register, enabling fine-grained adjustment without external components.
Can the GPIO pins on the LTC2933CGN#TRPBF be used as both inputs and outputs simultaneously?
No - each GPIO pin (GPIO1–GPIO3) on the LTC2933CGN#TRPBF is configured exclusively as either input or output in any given state, but its direction is fully programmable via I²C registers (GPIO1_CONFIG, GPIO2_3_CONFIG). When configured as input, it can be mapped to monitor another GPIO or GPI; when configured as output, it drives fault signals, ALERT, or custom logic with programmable polarity and delay-on-release. Simultaneous bidirectional operation on a single pin is not supported.
Is the internal EEPROM in the LTC2933CGN#TRPBF used only for configuration storage?
No - the internal EEPROM in the LTC2933CGN#TRPBF stores both user configuration (thresholds, GPIO settings, etc.) and fault history data, including a backup snapshot of the first detected fault. The STORE_USER command writes volatile register contents to EEPROM, while BACKUP_WORD reads the EEPROM-stored fault record. This dual-use design enables post-failure diagnostics without host processor involvement, supporting autonomous operation and functional safety requirements.
LTC2933CGN#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-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:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SSOP
LTC2933CGN#TRPBF FAQ
1.How can I place an order for LTC2933CGN#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2933CGN#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 LTC2933CGN#TRPBF reliable?
The price and inventory of LTC2933CGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2933CGN#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2933CGN#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2933CGN#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2933CGN#TRPBF?
LTC2933CGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2933CGN#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 LTC2933CGN#TRPBF?
For technical support, including LTC2933CGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2933CGN#TRPBF requirements.
6.How does Aetrix verify that LTC2933CGN#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2933CGN#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 LTC2933CGN#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2933CGN#TRPBF?
All LTC2933CGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2933CGN#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 LTC2933CGN#TRPBF part is unused and in its original packaging.
Return procedure for LTC2933CGN#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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