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Analog Devices Inc. LTC2933CDHD#PBF
- Part No.:
- LTC2933CDHD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2933CDHD#PBF.pdf
- Description:
- IC SUPERVISOR 6 CHANNEL 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:390
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Product details
Overview
LTC2933CDHD#PBF 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 autonomous fault logging for high-availability server and telecom systems.
For engineers reviewing the LTC2933CDHD#PBF datasheet, LTC2933CDHD#PBF pinout, LTC2933CDHD#PBF application, or LTC2933CDHD#PBF equivalent, key selection criteria include guaranteed 1% UV/OV threshold accuracy over temperature, 16-pin DFN (5mm × 4mm) package with exposed pad, programmable delay-on-release up to 2.2s per GPIO, internal 3.3V regulator (VDD33), and EEPROM-backed fault history retention for functional safety compliance.
Technical Context
The LTC2933CDHD#PBF implements dual-comparator per channel architecture with independently configurable high/low thresholds, selectable monitoring ranges (precision/low/medium/high), and programmable polarity. Its I²C interface supports three slave addresses via ASEL pin and SMBus Alert Response Address (0x0C) for interrupt-driven fault reporting.
Each of the six voltage inputs (V1–V6) maps to dedicated 8-bit DAC-based threshold registers; V1 supports 1V–13.9V range in 20mV/50mV steps, while V2–V6 support 0.2V–5.8V in 4mV/10mV/20mV steps. Internal EEPROM stores user configuration and fault snapshots with 10-year retention and 10,000-cycle endurance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supervision Channels | 6 independent inputs (V1–V6) with dual UV/OV comparators per channel |
| Threshold Accuracy | ±1% over full temperature range for V2–V6 in precision range; ±1.5% for V1 in medium range |
| I²C Interface | Standard-mode (10–400 kHz), 3 slave addresses (0x1C/0x1D/0x1E), Alert Response Address 0x0C |
| GPIO Capabilities | 3 configurable GPIOs (input/output/open-drain/weak pull-up/ALERT) with 8-step programmable delay-on-release (1.1ms–2.2s) |
| Supply Range | V1 input: 3.4V–13.9V; V2–V4: 3.4V–5.8V; VDD33 output: 3.22V–3.37V @ –1mA |
| EEPROM | Nonvolatile storage for configuration and fault history; 10-year data retention, 10,000 write cycles |
| Operating Temp | 0°C to +70°C (Commercial grade, C-suffix) |
Pinout & Package
Package: 16-lead (5mm × 4mm) plastic DFN (DHD) with exposed thermal pad (Pin 17), RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V4 | Supervisor Input Channel 4 | Monitors low-voltage rail; supports 0.2V–5.8V thresholds in 4mV/10mV/20mV steps |
| V3 | Supervisor Input Channel 3 | Monitors low-voltage rail; identical range and step resolution as V4 |
| V2 | Supervisor Input Channel 2 | Monitors low-voltage rail; identical range and step resolution as V4 |
| V1 | Supervisor Input Channel 1 | High-voltage input (3.4V–13.9V); powers internal regulator when highest among V1–V4 |
| VDD33 | Regulated Output | 3.3V supply for internal logic; requires 220nF bypass capacitor to GND |
| GND | Ground Reference | Analog/digital ground common node; exposed pad (Pin 17) is optional GND connection |
| GPIO3 | Configurable I/O | Programmable as input, open-drain output, weak pull-up output, or ALERT; supports delay-on-release |
| ASEL | I²C Address Select | Ternary input (GND/VDD33/floating) selects slave address: 0x1C/0x1D/0x1E |
| GPIO2 | Configurable I/O | Same functionality as GPIO3; supports mapping to other GPIOs or GPI inputs |
| GPIO1 | Configurable I/O | Same functionality as GPIO3; default configured as active-low open-drain output |
| SDA | I²C Data Line | Open-drain bidirectional bus line; requires external pull-up resistor (3V–5.5V) |
| SCL | I²C Clock Line | Input-only clock line; max 400 kHz; requires external pull-up resistor |
| GPI2 | General Purpose Input | Configurable as MR/UVDIS/MARG/AUXC; 15µA internal pull-up to VDD33 |
| GPI1 | General Purpose Input | Same configuration options as GPI2; factory-default set to Manual Reset (MR) |
| V6 | Supervisor Input Channel 6 | Low-voltage input (0.2V–5.8V); no power-sharing function; tie to GND if unused |
| V5 | Supervisor Input Channel 5 | Low-voltage input (0.2V–5.8V); no power-sharing function; tie to GND if unused |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM Configuration Storage | Retains user-programmed thresholds, GPIO settings, and fault history across power cycles without host intervention |
| Autonomous Fault Logging | Hardware-backed snapshot capture and EEPROM backup of first fault event, enabling post-failure root-cause analysis |
| Programmable Delay-on-Release | Eight discrete delay values (1.1ms–2.2s) per GPIO prevent nuisance tripping during transient recovery |
| Multi-Range Threshold Programming | Three per-channel ranges (precision/low/medium/high) optimize resolution and headroom for diverse rail voltages |
| Functional Safety Enablement | Supports system-level ASIL-B/C compliance via deterministic fault response, EEPROM-backed history, and diagnostic registers |
Applications
| High-Availability Server Power Monitoring | Telecom Base Station Supervision |
|---|---|
Use Scenario: Real-time monitoring of 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 UV/OV fault detection, latched ALERT assertion, and EEPROM-backed fault timestamping. Use Value: Enables graceful shutdown before brownout-induced data corruption; ±1% threshold accuracy reduces false resets by >40% vs. ±3% alternatives. | Use Scenario: Supervision of distributed DC-DC converter outputs (–48V derived 3.3V/5V/12V) in LTE/5G remote radio units with environmental temperature swings. IC Role / Device Role / Timing Role: Six-channel rail monitor with temperature-stable thresholds and SMBus Alert Response for centralized baseband processor notification. Use Value: Eliminates need for six discrete supervisors; programmable delay-on-release prevents false alarms during load-step transients. |
| Enterprise Storage Controller Supervision | Industrial PLC Power Management |
Use Scenario: Monitoring NVMe SSD power rails (12V, 3.3V, 1.8V, 1.2V) and auxiliary supplies in RAID controller cards operating 24/7. IC Role / Device Role / Timing Role: EEPROM-configured supervisor providing fault history logging, GPIO-controlled reset sequencing, and I²C-accessible status registers. Use Value: Reduces BOM count by 83% versus discrete solutions; 10-year EEPROM retention supports 15-year product lifecycle requirements. | Use Scenario: Supervision of isolated 24V input, 5V logic, 3.3V MCU, and analog sensor rails in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Hex supervisor with GPI-configurable margin test inputs and GPIO-driven watchdog reset signals. Use Value: Supports functional safety diagnostics per IEC 61508; ±1% accuracy ensures reliable operation at –40°C to +70°C ambient. |
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, SOIC-16 package | Lacks programmability and fault logging; suitable only for static, low-channel-count designs | Select only when cost sensitivity outweighs configurability needs and system has ≤4 rails |
| TPS389033QDSGRQ1 | Triple supervisor (3 channels), automotive-grade (–40°C to +125°C), fixed 3.3V UV threshold, no I²C, 6-pin WSON | No multi-rail support, no EEPROM, no GPIO flexibility; designed for single-rail automotive ECUs | Choose only for AEC-Q100-compliant automotive applications requiring 3.3V-only supervision |
Compared with MAX6816ESE+ and TPS389033QDSGRQ1, the LTC2933CDHD#PBF delivers six-channel programmability, EEPROM persistence, and I²C configurability-enabling one-device supervision of complex multi-rail systems where adaptability, fault forensics, and long-term reliability are critical.
Availability
LTC2933CDHD#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 functional safety traceability.
Supply support for LTC2933CDHD#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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2933 belongs to Analog Devices' precision power supervision product line, engineered for mission-critical infrastructure where deterministic fault response, EEPROM-backed configuration, and multi-rail coordination are essential to system uptime and safety certification.
FAQ
What is the operating temperature range for the LTC2933CDHD#PBF?
The LTC2933CDHD#PBF is rated for commercial temperature operation from 0°C to +70°C. This grade is specified in the part number suffix "C" and validated per Analog Devices' Rev. B datasheet. It is not rated for extended industrial (–40°C to +85°C) or automotive temperature ranges; those require LTC2933IDHD#PBF or automotive-qualified variants. Thermal derating applies to EEPROM retention above +85°C junction temperature.
Does the LTC2933CDHD#PBF require external passive components for basic operation?
Yes, the LTC2933CDHD#PBF requires two mandatory external components: a 220nF capacitor from VDD33 to GND for internal regulator stability, and 0.1µF bypass capacitors on each monitored supply (V1–V6) to GND. Additionally, external pull-up resistors on SDA and SCL lines are required for I²C communication-typically 2.2kΩ to 3.3V or 4.7kΩ to 5V depending on bus capacitance and speed.
How many unique voltage thresholds can be programmed per channel on the LTC2933CDHD#PBF?
The LTC2933CDHD#PBF supports 256 unique programmable thresholds per channel (V1–V6), implemented via 8-bit DAC encoding for both UV and OV comparators. Each channel's threshold resolution depends on selected range: e.g., V2–V6 offer 4mV steps in precision range (0.2V–1.2V), 10mV in low range (0.5V–3V), and 20mV in medium range (1V–5.8V). V1 offers 20mV or 50mV steps depending on medium/high range selection.
Can the GPIO pins on the LTC2933CDHD#PBF drive external loads directly?
The GPIO pins on the LTC2933CDHD#PBF support open-drain outputs with 3mA sink capability (VOL = 0.4V @ ISINK = 3mA) and weak pull-up outputs (~15µA to VDD33). They are not designed to source significant current or drive heavy capacitive or resistive loads directly. For driving LEDs, relays, or level-shifted logic, external buffer circuitry or MOSFET drivers are recommended to avoid exceeding VOL or degrading timing performance.
Is the EEPROM in the LTC2933CDHD#PBF field-programmable and durable enough for production use?
Yes, the internal EEPROM in the LTC2933CDHD#PBF is fully field-programmable via I²C STORE_USER command and rated for 10,000 write cycles with 10-year data retention at ≤+85°C junction temperature. It stores both user configuration and fault history snapshots. Retention degrades above +85°C; Analog Devices specifies derating curves in the Applications Information section. EEPROM writes are atomic and verified-no external controller firmware is needed for autonomous operation.
LTC2933CDHD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFDFN Exposed Pad
- 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:
- 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#PBF FAQ
1.How can I place an order for LTC2933CDHD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2933CDHD#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 LTC2933CDHD#PBF reliable?
The price and inventory of LTC2933CDHD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2933CDHD#PBF is usually 5 days.
3.What payment methods are accepted for LTC2933CDHD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2933CDHD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2933CDHD#PBF?
LTC2933CDHD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2933CDHD#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 LTC2933CDHD#PBF?
For technical support, including LTC2933CDHD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2933CDHD#PBF requirements.
6.How does Aetrix verify that LTC2933CDHD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2933CDHD#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 LTC2933CDHD#PBF meets industry standards.
7.What is the process for return or replacement of LTC2933CDHD#PBF?
All LTC2933CDHD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2933CDHD#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 LTC2933CDHD#PBF part is unused and in its original packaging.
Return procedure for LTC2933CDHD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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