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Analog Devices Inc. LTC2930CDD#TRPBF
- Part No.:
- LTC2930CDD#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Supply Controllers, Monitors
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
LTC2930CDD#TRPBF.pdf
- Description:
- IC 6 POWER SUPPLY MONITOR 12DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,124
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Product details
Overview
LTC2930CDD#TRPBF from Analog Devices (formerly Linear Technology) is a configurable six-supply voltage monitor IC with ±1.5% threshold accuracy, adjustable reset timeout via external capacitor (2ms/nF), manual reset input, and guaranteed RST output operation down to VCC = 1V. It supports 16 preset combinations of 5V/3.3V/3V/2.5V/1.8V/1.5V and ±adjustable thresholds (0.5V nominal), targeting multivoltage systems in telecom equipment and network servers.
For engineers reviewing the LTC2930CDD#TRPBF datasheet, LTC2930CDD#TRPBF pinout, LTC2930CDD#TRPBF application, or LTC2930CDD#TRPBF equivalent, key selection criteria include guaranteed ±1.5% threshold accuracy over temperature, 52μA quiescent current, 12-lead 3mm × 3mm DFN package, and support for negative voltage monitoring (–ADJ mode on V4) in industrial and automotive power-up/brownout supervision.
Technical Context
The LTC2930CDD#TRPBF uses a ratiometric resistive divider on VPG (referenced to 1.210V VREF) to select one of 16 voltage-monitoring configurations, enabling simultaneous supervision of up to six supplies including positive, negative, and adjustable thresholds. Its internal comparators feature built-in glitch immunity and operate with VCC derived from the greater of V1 or V2.
Reset assertion is triggered when any monitored supply falls below its configured threshold; RST remains low for a user-defined timeout (set by CRT capacitor) after all supplies recover. The open-drain RST output includes a weak 6μA internal pull-up to V2 and is guaranteed functional down to VCC = 1V, supporting reliable power sequencing in low-voltage brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 52μA typical - enables battery-backed or ultra-low-power system supervision without significant load on monitored rails. |
| Voltage Threshold Accuracy | ±1.5% over full temperature range - ensures precise reset triggering across 0°C to 70°C, minimizing false resets in telecom and server applications. |
| Reset Timeout Range | 25μs (CRT open) to >1s (CRT = 1μF) - programmable via external capacitor at CRT pin (2ms/nF scaling) for microprocessor-compatible reset hold times. |
| Operating Voltage Range | VCC ≥ 1V guaranteed RST operation - allows supervision during deep brownout where other monitors fail, critical for safe system shutdown. |
| Input Threshold Options | 16 preset combos + ADJ/–ADJ on V3–V6 - supports mixed-rail systems (e.g., 12V, 5V, 3.3V, 1.8V, 1.2V, –5.2V) without external comparators. |
| Reference Voltage | VREF = 1.210V ±18mV - stable buffered reference for mode selection and negative-adjustable trip point generation (VTRIP = –1.210V × R3/R4). |
| Package | 12-lead 3mm × 3mm DFN (DD) - compact footprint compatible with high-density PCB layouts in space-constrained telecom modules. |
Pinout & Package
Package: 12-lead 3mm × 3mm plastic DFN (DD) with exposed pad (Pin 13) connected to GND. RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V5 (Pin 1) | Adjustable voltage input 5 | High-impedance comparator input with 0.5V nominal threshold; tie to V1 if unused. |
| V3 (Pin 2) | Voltage input 3 | Selects 2.5V/1.8V/1.5V/ADJ; threshold set by VPG configuration; tie to V1 if unused. |
| V1 (Pin 3) | Voltage input 1 | Selects 5V or 3.3V; greater of V1/V2 defines internal VCC; bypass with ≥0.1μF capacitor. |
| CRT (Pin 4) | Reset timeout capacitor | Connects to GND; sets tRST = 2ms/nF (e.g., 47nF → 94ms); open = ~25μs minimum delay. |
| RST (Pin 5) | Reset output | Open-drain output with 6μA internal pull-up to V2; guaranteed logic state for VCC ≥ 1V. |
| MR (Pin 6) | Manual reset input | Active-low; internal weak pull-up allows direct switch connection; debounced via CRT timing. |
| GND (Pin 7) | Ground | Reference node for all analog circuitry and power return path. |
| VPG (Pin 8) | Threshold select input | Accepts voltage divider tap between VREF and GND to select 1 of 16 modes; no capacitance allowed. |
| VREF (Pin 9) | Buffered reference output | 1.210V ±18mV; sources/sinks ±1mA; drives VPG divider and negative-adjust circuits. |
| V4 (Pin 10) | Voltage input 4 | Selects 1.8V/1.5V/ADJ/–ADJ; –ADJ mode enables negative voltage monitoring (e.g., –5.2V). |
| V2 (Pin 11) | Voltage input 2 | Selects 3.3V/3V/2.5V; greater of V1/V2 defines VCC; bypass with ≥0.1μF capacitor. |
| V6 (Pin 12) | Adjustable voltage input 6 | High-impedance comparator input with 0.5V nominal threshold; tie to V1 if unused. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable six-supply monitoring | 16 factory-preset voltage combinations plus ADJ/–ADJ inputs eliminate need for multiple discrete supervisors in multirail systems. |
| ±1.5% threshold accuracy over temperature | Reduces required system voltage margin vs. ±2.5% or wider tolerance devices, improving reliability in 5% tolerance rails (e.g., 5V ±5%). |
| Adjustable reset timeout (CRT pin) | Linear 2ms/nF scaling enables precise match to processor reset timing requirements without firmware changes. |
| Guaranteed RST operation down to VCC = 1V | Ensures clean reset assertion during deep brownout events where VCC collapses below 2V, preventing latch-up or undefined logic states. |
| Negative voltage monitoring (–ADJ mode) | Supports direct supervision of negative rails (e.g., –5.2V) using VREF-referenced divider, removing need for level-shifting circuitry. |
Applications
| Telecom Equipment Power Sequencing | Network Server Multirail Supervision |
|---|---|
Use Scenario: Monitoring 12V, 5V, 3.3V, 1.8V, 2.5V, and –5.2V rails in a line card with strict power-up order and brownout recovery. IC Role / Device Role / Timing Role: Centralized six-rail supervisor generating a single OR-ed reset signal to coordinate FPGA, ASIC, and PHY initialization. Use Value: Eliminates six discrete supervisors and associated layout complexity while maintaining ±1.5% threshold accuracy across –40°C to 85°C operating range. | Use Scenario: Ensuring reliable boot and shutdown in dual-CPU server motherboards with asymmetric rail counts (e.g., 1.2V CPU core, 3.3V I/O, 5V standby, –12V legacy). IC Role / Device Role / Timing Role: Configurable voltage monitor with manual reset and adjustable timeout, interfacing directly with BMC for fault logging and graceful restart. Use Value: 52μA quiescent current minimizes standby power draw; VCC ≥ 1V RST guarantee prevents spurious resets during AC power flicker. |
| Automotive Infotainment Module | Industrial PLC Power Management |
Use Scenario: Supervising 5V MCU, 3.3V display interface, 1.8V memory, 12V ignition, –5V analog sensor bias, and 2.5V ADC reference in harsh-temperature environments. IC Role / Device Role / Timing Role: High-accuracy supply monitor with manual reset button integration and glitch-immune comparators for EMI-prone vehicle cabins. Use Value: ±1.5% threshold accuracy over 0°C to 70°C (C-grade) ensures consistent reset behavior despite under-hood thermal cycling. | Use Scenario: Monitoring redundant 24V DC inputs, 5V logic, 3.3V communication, 1.8V FPGA core, –15V op-amp rails, and 12V actuator drivers in factory automation controllers. IC Role / Device Role / Timing Role: Configurable supervisor providing fail-safe reset signaling to safety-critical microcontrollers during undervoltage or overvoltage faults. Use Value: –ADJ mode on V4 enables direct –15V rail supervision without external op-amps; 125°C H-grade variants available for extended temperature operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar six-supply monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2931CDD#TRPBF | Provides individual comparator outputs (six separate RSTx pins) instead of single RST; same 16-mode configuration and ±1.5% accuracy. | Required when system-level diagnostics need per-rail fault isolation rather than aggregated reset signaling. | Select LTC2931CDD#TRPBF only if independent fault reporting is needed; otherwise LTC2930CDD#TRPBF offers lower pin count and simpler routing. |
| LTC2909CMS8E#TRPBF | Triple-input UV/OV/negative voltage monitor in 8-lead MSOP; supports only three rails, no six-rail capability or VPG-based mode selection. | Suitable for cost-sensitive designs with ≤3 rails and no requirement for programmable combinations or negative rail supervision beyond single channel. | Choose LTC2909CMS8E#TRPBF only for simpler, lower-channel-count applications; it cannot replace LTC2930CDD#TRPBF in six-rail systems. |
Compared with LTC2931CDD#TRPBF, the LTC2930CDD#TRPBF reduces board area and BOM count by consolidating six rail statuses into one reset output, while retaining identical accuracy and configuration flexibility; versus LTC2909CMS8E#TRPBF, it delivers true six-rail supervision with programmable thresholds-critical for complex telecom and server power architectures.
Availability
LTC2930CDD#TRPBF is available at Aetrix Electronics and suitable for telecom equipment, network servers, and automotive infotainment systems requiring stable component supply, precise multirail voltage supervision, and long-term production continuity.
Supply support for LTC2930CDD#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2930CDD#TRPBF belongs to Linear's precision power supervision product line, designed specifically for high-accuracy, low-quiescent-current monitoring of complex multivoltage systems in mission-critical infrastructure.
FAQ
What is the operating temperature range for the LTC2930CDD#TRPBF?
The LTC2930CDD#TRPBF is specified for commercial-grade operation from 0°C to 70°C. This temperature range is clearly defined in the Absolute Maximum Ratings table and Electrical Characteristics section of the official datasheet. The 'C' suffix in the part number explicitly denotes the 0°C to 70°C grade, distinguishing it from the industrial (I) and high-temperature (H) variants. All electrical parameters, including ±1.5% threshold accuracy and 52μA supply current, are guaranteed across this full range.
How do I configure the LTC2930CDD#TRPBF to monitor a –5.2V rail?
To monitor –5.2V with the LTC2930CDD#TRPBF, configure V4 for –ADJ mode using the resistor values from Table 3 (e.g., R3 = 487kΩ, R4 = 121kΩ). Connect the negative supply to one end of R3, the other end to V4, and R4 between V4 and VREF (1.210V). The LTC2930CDD#TRPBF's internal circuitry references the comparator to ground in –ADJ mode, enabling direct negative rail supervision. Ensure VREF is stable and decoupled per datasheet guidelines.
What is the minimum reset timeout achievable with the LTC2930CDD#TRPBF?
The minimum reset timeout for the LTC2930CDD#TRPBF is approximately 25μs, achieved by leaving the CRT pin unconnected (open). This value is specified in the Applications Information section and confirmed by the Typical Performance Characteristics graph (Figure 2930 G09). No external capacitor is required for this minimum delay, making the LTC2930CDD#TRPBF suitable for fast-reset microcontrollers or FPGAs requiring sub-millisecond assertion.
Does the LTC2930CDD#TRPBF require external pull-up resistors on its RST output?
The LTC2930CDD#TRPBF includes an internal 6μA weak pull-up to V2 on the RST pin, sufficient for many low-speed applications. However, an external pull-up resistor is recommended when faster rise times are needed or when VOH must exceed V2 (e.g., pulling up to 5V in a 3.3V system). The datasheet explicitly notes this in Note 5 of the Electrical Characteristics table, confirming that the internal pull-up is optional and application-dependent.
Can the LTC2930CDD#TRPBF monitor fewer than six supplies?
Yes, the LTC2930CDD#TRPBF can monitor fewer than six supplies. Unused inputs (e.g., V5, V6) should be tied to V1 as instructed in the Pin Functions section. The device automatically ignores unconnected or tied inputs, and its 52μA supply current remains constant regardless of active input count. This flexibility allows designers to use the same part across multiple platforms with varying rail counts, simplifying inventory and qualification.
LTC2930CDD#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- Six Power Supply Monitor
- Voltage - Input:
- -
- Voltage - Supply:
- 1V ~ 7V
- Current - Supply:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-DFN (3x3)
LTC2930CDD#TRPBF FAQ
1.How can I place an order for LTC2930CDD#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2930CDD#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 LTC2930CDD#TRPBF reliable?
The price and inventory of LTC2930CDD#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2930CDD#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2930CDD#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2930CDD#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2930CDD#TRPBF?
LTC2930CDD#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2930CDD#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 LTC2930CDD#TRPBF?
For technical support, including LTC2930CDD#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2930CDD#TRPBF requirements.
6.How does Aetrix verify that LTC2930CDD#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2930CDD#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 LTC2930CDD#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2930CDD#TRPBF?
All LTC2930CDD#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2930CDD#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 LTC2930CDD#TRPBF part is unused and in its original packaging.
Return procedure for LTC2930CDD#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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