My Inquiry
My Account
Analog Devices Inc. LTC2933CGN#PBF
- Part No.:
- LTC2933CGN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2933CGN#PBF.pdf
- Description:
- IC SUPERVISOR 6 CHANNEL 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,980
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2933CGN#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 over temperature, I²C/SMBus interface, and 256 programmable thresholds per channel. It operates from 3.4V to 13.9V supply and supports autonomous fault monitoring in high-availability server power systems.
For engineers reviewing the LTC2933CGN#PBF datasheet, LTC2933CGN#PBF pinout, LTC2933CGN#PBF application, or LTC2933CGN#PBF equivalent, key selection considerations include its 16-pin SSOP package, 0°C to 70°C operating range, programmable delay-on-release for GPIO outputs, internal 3.3V regulator (VDD33), and EEPROM-backed fault history storage.
Technical Context
The LTC2933CGN#PBF implements six independent voltage monitoring channels, each with dual comparators (UV/OV) and selectable input ranges-precision (0.2–1.2V), low (0.5–3V), medium (1–5.8V), and high (2.5–13.9V)-with LSB steps as fine as 4mV. Thresholds are stored in volatile registers and backed up to nonvolatile EEPROM.
Its I²C interface supports 400kHz operation, three slave addresses via ASEL pin (GND/VDD33/floating), and SMBus ALERT response. Two GPI inputs support MR/UVDIS/MARG/AUXC functions; three GPIO pins operate as configurable inputs/outputs with programmable polarity, open-drain or weak-pull-up output types, and eight-step delay-on-release (1.1ms to 2.2s).
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 temperature for V2–V6 in precision/low/medium ranges; enables tighter system voltage margins |
| Supply Range | 3.4V to 13.9V on V1; V2–V4 share supply selection; VDD33 regulated 3.3V output (±2.4%) |
| I²C Interface | 400kHz max clock; 3 selectable slave addresses; supports SMBus ALERT protocol |
| EEPROM | 10-year data retention; 10,000 write cycles; stores configuration and fault snapshot |
| GPIO Delay-on-Release | Programmable 8-step timing (1.1ms–2.2s); prevents chatter during recovery from faults |
| Package & Temp | 16-lead plastic SSOP; 0°C to 70°C operating range (C-grade) |
Pinout & Package
Package: 16-lead plastic SSOP (narrow), 5.3mm × 5.3mm body, 0.635mm pitch. Exposed pad not present (DFN-only feature).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V5 | Supervisor Input Channel 5 | Monitors low-voltage rail; programmable threshold range 0.2–5.8V |
| V6 | Supervisor Input Channel 6 | Monitors low-voltage rail; same range and resolution as V5 |
| GPI1 | General Purpose Input 1 | Configurable as MR, UVDIS, MARG, or AUXC; 15µA internal pull-up |
| GPI2 | General Purpose Input 2 | Same configurable functions as GPI1; independent mapping control |
| SCL | I²C Clock Input | Open-drain input requiring external pull-up; 400kHz max frequency |
| SDA | I²C Data Bidirectional | Open-drain I/O requiring external pull-up; supports ACK/NACK |
| GPIO1 | General Purpose I/O 1 | Configurable as input, open-drain output, or weak-pull-up output; supports ALERT |
| GPIO2 | General Purpose I/O 2 | Same functionality as GPIO1; independently programmable delay and polarity |
| V4 | Supervisor Input Channel 4 | Monitors rail; shares supply selection with V1–V3; bypass capacitor required |
| V3 | Supervisor Input Channel 3 | Same electrical specs as V2 and V4; supports precision-range thresholds |
| V2 | Supervisor Input Channel 2 | Supports 4mV LSB in precision range (0.2–1.2V); ±1% accuracy guaranteed |
| V1 | High-Voltage Supervisor Input | Wide range (1–13.9V); two sub-ranges (medium/high); highest voltage among V1–V4 powers device |
| VDD33 | Internal 3.3V Regulator Output | Supplies internal circuitry; requires 220nF ceramic capacitor to GND |
| GND | Ground Reference | Analog/digital common return; connects to PCB ground plane |
| GPIO3 | General Purpose I/O 3 | Third configurable I/O; supports input mapping to GPIO1/GPIO2 and delay-on-release |
| ASEL | I²C Address Select | Binary-coded input (GND/VDD33/floating) selecting one of three 7-bit slave addresses |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM Configuration Storage | Retains user-programmed thresholds, GPIO settings, and fault history across power cycles without host intervention |
| Per-Channel Programmable Ranges | Three distinct input ranges per channel (e.g., precision 0.2–1.2V @ 4mV step) enable optimal resolution for diverse rail voltages |
| Autonomous Fault Response | GPIO outputs respond to UV/OV faults with user-defined polarity, type, and delay-on-release-no firmware polling required |
| Integrated 3.3V Regulator | VDD33 output eliminates need for external LDO; supplies internal logic and I/O cells; stable under varying V1–V4 conditions |
| SMBus ALERT Compatibility | Single GPIO can be configured as standard SMBus ALERT output, enabling interrupt-driven fault handling in compliant systems |
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 providing coordinated reset assertion, fault logging, and EEPROM-backed history for field diagnostics. Use Value: ±1% threshold accuracy ensures reliable detection at tight margins (e.g., 1.2V ±12mV), reducing false resets in thermally stressed environments. | Use Scenario: Supervising power sequencing and fault detection in carrier-grade Ethernet switches with multiple ASICs and PHYs. IC Role / Device Role / Timing Role: I²C-configurable supervisor managing UV/OV events across distributed 3.3V, 2.5V, 1.8V, and 1.0V supplies with programmable release delays. Use Value: Eight-step delay-on-release prevents premature re-enabling of downstream regulators after transient overvoltage events. |
| Data Storage Controller Monitoring | Industrial PLC Power Management |
Use Scenario: Real-time supervision of NVMe SSD controller rails (12V, 3.3V, 1.8V, 1.2V, 1.0V, 0.85V) in enterprise storage arrays. IC Role / Device Role / Timing Role: Hex-channel supervisor capturing fault timestamps and status in EEPROM for post-failure analysis without host CPU involvement. Use Value: Internal EEPROM backup of first fault event enables root-cause identification even after unexpected power loss. | Use Scenario: Monitoring isolated 24V, 5V, 3.3V, 1.8V, 1.2V, and 0.9V supplies in modular programmable logic controllers with extended temperature requirements. IC Role / Device Role / Timing Role: Configurable supervisor supporting manual reset (MR), margin testing (MARG), and auxiliary comparator (AUXC) inputs for functional safety validation. Use Value: Dual GPI inputs allow simultaneous MR assertion and margin test initiation, simplifying production test sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2937CGN#PBF | 7-channel supervision; adds dedicated watchdog timer; identical EEPROM, I²C, and GPIO architecture | Required where system-level watchdog timeout coordination is needed alongside rail monitoring | Select when needing integrated watchdog + 7-rail supervision; pin-compatible but requires updated firmware for watchdog register access |
| TPS3808G33DBVR | Single-channel, fixed 3.3V UV threshold; no EEPROM, no I²C, no multi-rail capability; SOT-23-6 package | Only suitable for simple single-rail reset generation without configurability or logging | Choose only for cost-sensitive, single-rail applications where programmability and fault history are unnecessary |
Compared with LTC2937CGN#PBF, LTC2933CGN#PBF offers identical supervision flexibility for six rails with lower channel count and no watchdog-ideal for space-constrained designs where seventh rail or timeout monitoring is unused. Versus TPS3808G33DBVR, LTC2933CGN#PBF provides full configurability, EEPROM persistence, and multi-rail coordination at higher BOM cost and complexity.
Availability
LTC2933CGN#PBF is available at Aetrix Electronics and suitable for high-availability computer systems, network servers, and telecom equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LTC2933CGN#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 LTC2933CGN#PBF belongs to Analog Devices' precision power supervision product line, designed specifically for complex multi-rail systems demanding configurable thresholds, EEPROM-based autonomy, and I²C-managed fault response in mission-critical infrastructure.
FAQ
What is the operating temperature range for the LTC2933CGN#PBF?
The LTC2933CGN#PBF is rated for 0°C to 70°C ambient operation, as indicated by the "C" grade suffix. This distinguishes it from the "I" grade (–40°C to 85°C) variants like LTC2933IGN#PBF. The specification applies to all electrical parameters in the datasheet unless otherwise noted, and thermal derating of EEPROM retention applies above 85°C junction temperature.
Does the LTC2933CGN#PBF require external components for basic operation?
Yes, the LTC2933CGN#PBF requires a 220nF capacitor from VDD33 to GND for regulator stability, plus 0.1µF bypass capacitors on each monitored input (V1–V6). External pull-up resistors on SCL and SDA lines are mandatory for I²C communication. No external resistors are needed for GPI or GPIO biasing-the device integrates 15µA pull-ups and configurable I/O types.
How many unique voltage thresholds can be programmed per channel on the LTC2933CGN#PBF?
Each of the six channels (V1–V6) supports 256 unique programmable thresholds, encoded as 8-bit values in the respective Vn_THR register. Threshold resolution depends on selected range: 4mV in precision range (V2–V6), 10mV in low range, 20mV in medium range, and 50mV in high range (V1 only). All thresholds are stored in volatile memory and retained in EEPROM after STORE_USER command.
Can the LTC2933CGN#PBF generate a reset signal directly, or does it require external logic?
The LTC2933CGN#PBF does not provide a dedicated reset output pin. Instead, any of the three GPIO pins (GPIO1–GPIO3) can be configured as active-low open-drain outputs to drive an external reset line-programmable for UV, OV, MR, or ALERT conditions with user-defined delay-on-release. This eliminates need for external reset generators while retaining full timing control within the IC.
Is the LTC2933CGN#PBF pin-compatible with other packages in the LTC2933 family?
No, the LTC2933CGN#PBF uses a 16-lead plastic SSOP package, while the DFN variants (e.g., LTC2933CDHD#PBF) use a 16-lead 5mm × 4mm DFN with exposed pad. Pin numbering and functions are identical between SSOP and DFN packages, but physical layout, thermal characteristics (θJA = 110°C/W vs. 41.7°C/W), and PCB footprint differ-requiring separate board designs. Both share identical logic and register maps.
LTC2933CGN#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- 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-SSOP
LTC2933CGN#PBF FAQ
1.How can I place an order for LTC2933CGN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2933CGN#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 LTC2933CGN#PBF reliable?
The price and inventory of LTC2933CGN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2933CGN#PBF is usually 5 days.
3.What payment methods are accepted for LTC2933CGN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2933CGN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2933CGN#PBF?
LTC2933CGN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2933CGN#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 LTC2933CGN#PBF?
For technical support, including LTC2933CGN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2933CGN#PBF requirements.
6.How does Aetrix verify that LTC2933CGN#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2933CGN#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 LTC2933CGN#PBF meets industry standards.
7.What is the process for return or replacement of LTC2933CGN#PBF?
All LTC2933CGN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2933CGN#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 LTC2933CGN#PBF part is unused and in its original packaging.
Return procedure for LTC2933CGN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2933CGN#PBF Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
