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Analog Devices Inc. LTC2913HDD-2#PBF
- Part No.:
- LTC2913HDD-2#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LTC2913HDD-2#PBF.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 10DFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LTC2913HDD-2#PBF from Analog Devices (formerly Linear Technology) is a dual-input, dual-threshold voltage supervisor IC designed for simultaneous undervoltage (UV) and overvoltage (OV) monitoring of two independent power rails. It features ±1.5% threshold accuracy, 44 μA quiescent current, open-drain UV/OV outputs, and a disable (DIS) pin to suppress fault outputs-ideal for high-reliability industrial power sequencing in systems with 5V/3.3V or 12V/5V supply pairs.
For engineers reviewing the LTC2913HDD-2#PBF datasheet, LTC2913HDD-2#PBF pinout, LTC2913HDD-2#PBF application, or LTC2913HDD-2#PBF equivalent, key selection considerations include its –40°C to 125°C operating range, adjustable reset timeout via external capacitor, guaranteed operation down to VCC = 1 V, DIS-controlled output suppression, and compatibility with 3mm × 3mm DFN packaging for space-constrained embedded designs.
Technical Context
The LTC2913HDD-2#PBF implements two independent comparator channels per monitored rail-one referenced to 0.5 V for UV detection on VHn inputs, another for OV detection on VLn inputs-each feeding into shared open-drain UV and OV logic outputs. Its internal shunt regulator enables direct operation from supplies up to 6 V or regulated operation from higher voltages using an external series resistor.
Glitch filtering is achieved via integrated low-pass filtering at each comparator output, ensuring robust transient immunity without added hysteresis error. The DIS pin (Pin 8) provides active-high output disable functionality unique to the -2 variant, overriding UV/OV assertion except during VCC undervoltage lockout (UVLO), where UV asserts regardless.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3 V to 6 V (direct supply); >6 V requires external current-limiting resistor due to internal 6.6 V shunt regulator |
| Threshold Accuracy | ±1.5% over –40°C to 125°C - ensures precise trip points for tight-tolerance supplies like 5V ±5% |
| Quiescent Current | 44 μA typical - enables always-on monitoring in battery-backed or low-power industrial systems |
| UV/OV Output Type | Open-drain with weak internal pull-up to VCC - supports wired-OR fault-bus architectures and external pull-up customization |
| Reset Timeout | Adjustable 6–14 ms via external TMR capacitor (e.g., 1 nF → 8.5 ms) - guarantees minimum reset pulse width for system stabilization |
| DIS Input Logic | Active-high disable: pulls UV/OV high when DIS ≥ 1.2 V - allows software-controlled fault masking during safe-mode transitions |
| UVLO Threshold | 2.0 V (±0.1 V) with 25 mV hysteresis - provides fail-safe reset initiation during brownout conditions before core logic fails |
Pinout & Package
Package: 10-lead (3mm × 3mm) plastic DFN with exposed pad (Pin 11, optional GND connection). RoHS-compliant, lead-free #PBF finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VH1 (Pin 1) | Undervoltage sense input 1 | Monitors high-side divider tap; triggers UV when voltage falls below 0.5 V reference |
| VL1 (Pin 2) | Overvoltage sense input 1 | Monitors low-side divider tap; triggers OV when voltage rises above 0.5 V reference |
| VH2 (Pin 3) | Undervoltage sense input 2 | Independent second UV channel; tied to VCC if unused |
| VL2 (Pin 4) | Overvoltage sense input 2 | Independent second OV channel; tied to GND if unused |
| GND (Pin 5) | Ground reference | Primary return path for all analog and digital circuitry; connects to exposed pad for thermal performance |
| OV (Pin 6) | Open-drain overvoltage output | Asserts low during OV fault; remains high when DIS = high or during UVLO recovery |
| UV (Pin 7) | Open-drain undervoltage output | Asserts low during UV fault or VCC UVLO; held low for timeout period after fault clearance |
| DIS (Pin 8) | Output disable control | Active-high input (VIH ≥ 1.2 V); disables UV/OV assertion except during VCC UVLO |
| TMR (Pin 9) | Timeout timing capacitor node | Connects to GND via CTMR (≥10 pF) to set reset delay; tie to VCC to bypass timer |
| VCC (Pin 10) | Supply input / shunt regulator | Accepts 2.3–6 V directly; regulates >6 V supplies internally (max 10 mA input current) |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail UV/OV monitoring | Simultaneously supervises two independent supplies (e.g., 12V & 5V) with separate VH/ VL inputs per rail |
| Disable-controlled fault masking | DIS pin forces UV/OV high during normal operation, enabling controlled reset suppression without hardware changes |
| Guaranteed sub-2V operation | UV output asserts at VCC ≥ 1 V, supporting brownout detection in systems with weak hold-up capacitors |
| Glitch-immune comparator architecture | Integrated low-pass filtering eliminates false triggering from <700 ns transients at 1% overdrive |
| Space-optimized DFN package | 3mm × 3mm footprint with thermal pad reduces PCB area by ~40% vs. MSOP while improving thermal resistance (θJA = 43°C/W) |
Applications
| Industrial PLC Power Sequencing | Automotive Infotainment DC-DC Monitoring |
|---|---|
|
Use Scenario: Monitoring 12V main rail and 5V microcontroller supply in programmable logic controllers with strict startup order requirements. IC Role / Device Role / Timing Role: LTC2913HDD-2#PBF acts as dual-rail supervisor, asserting UV only after both rails stabilize for ≥8.5 ms, preventing premature MCU boot. Use Value: Eliminates need for discrete RC timers and dual comparators, reducing BOM count by 7 components while guaranteeing ±1.5% trip accuracy across –40°C to 125°C. |
Use Scenario: Supervising 5V USB-C PD interface and 3.3V SoC core supply in automotive head units subject to load-dump transients. IC Role / Device Role / Timing Role: LTC2913HDD-2#PBF detects OV on 5V rail during load dump (>18V) and UV on 3.3V rail during cold-crank (<2.5V), holding reset until both recover. Use Value: Glitch filtering rejects 100 ns spikes common in automotive environments, avoiding spurious resets that would corrupt firmware updates. |
| Medical Imaging Power Integrity | Telecom Base Station Bias Monitoring |
|
Use Scenario: Ensuring stable 5V and 3.3V supplies for FPGA-based image processing modules in portable ultrasound devices. IC Role / Device Role / Timing Role: LTC2913HDD-2#PBF uses DIS pin to mask UV/OV during FPGA configuration phase, then enables supervision once configuration completes. Use Value: Disabling fault outputs during known-safe transitions prevents false shutdowns, extending operational uptime without compromising safety-critical post-configuration monitoring. |
Use Scenario: Monitoring +48V bias supply and 12V auxiliary rail in 5G remote radio units deployed in uncontrolled outdoor cabinets. IC Role / Device Role / Timing Role: LTC2913HDD-2#PBF operates from local 5V LDO, supervising both rails with temperature-compensated thresholds across –40°C to 125°C ambient. Use Value: ±1.5% threshold accuracy maintains trip points within spec even at extreme temperatures, preventing nuisance resets during summer heatwaves or winter cold snaps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-rail voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2913HMS-2#PBF | Same electrical specs but in 10-lead MSOP package (θJA = 120°C/W); no exposed thermal pad | Preferred for prototyping or legacy layouts with MSOP footprints; less suitable for high-power-density industrial designs | Select when board rework or hand-soldering is required; avoid for thermally constrained enclosures |
| LTC2904CMS8#PBF | Single-supply, 3-state programmable dual monitor; adjustable tolerance (0.5–5%), no DIS pin, SOT-23-8 package | Used where only one rail needs monitoring or where tolerance tuning is critical; lacks dual-rail independence and disable function | Choose for cost-sensitive consumer applications with single-rail supervision; not a functional substitute for LTC2913HDD-2#PBF's dual-rail+DIS capability |
Compared with LTC2913HMS-2#PBF, the LTC2913HDD-2#PBF offers superior thermal performance and smaller footprint; compared with LTC2904CMS8#PBF, it delivers true independent dual-rail monitoring with hardware-controlled fault masking-critical for safety-certified industrial systems.
Availability
LTC2913HDD-2#PBF is available at Aetrix Electronics and suitable for industrial PLCs, automotive infotainment systems, medical imaging equipment, and telecom base stations requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2913HDD-2#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 acquired Linear Technology in 2017 and maintains full product support, manufacturing, and documentation for the LTC portfolio. Linear's precision analog heritage ensures high-reliability, low-drift performance in harsh environments.
The LTC2913 family was designed specifically for high-accuracy, low-power voltage supervision in space-constrained industrial and automotive systems-emphasizing guaranteed operation over –40°C to 125°C, glitch immunity, and flexible output control.
FAQ
What is the operating temperature range of the LTC2913HDD-2#PBF?
The LTC2913HDD-2#PBF is rated for –40°C to +125°C operation, validated across this full range for threshold accuracy (±1.5%), quiescent current (44 μA typ), and UV/OV timing parameters. This makes it suitable for under-hood automotive, industrial motor drives, and outdoor telecom equipment where ambient extremes are common. The "H" grade designation explicitly confirms this extended temperature capability.
How does the DIS pin function on the LTC2913HDD-2#PBF?
The DIS pin (Pin 8) on the LTC2913HDD-2#PBF is an active-high disable input. When pulled to ≥1.2 V, it forces both UV and OV outputs into a high-impedance state with weak internal pull-up to VCC-effectively masking all fault conditions. However, during VCC undervoltage lockout (UVLO, VCC < 2.0 V), UV asserts low regardless of DIS state. This behavior enables safe-mode operation while preserving brownout protection.
Can the LTC2913HDD-2#PBF monitor negative voltages?
No, the LTC2913HDD-2#PBF is designed exclusively for positive voltage monitoring. Its VHn and VLn inputs are referenced to an internal 0.5 V threshold and require positive input signals. For negative rail supervision, Analog Devices recommends the LTC2909 or LTC2914, which include dedicated negative-input circuitry and separate VCC pins. Attempting to apply negative voltages to VHn/VLn pins violates Absolute Maximum Ratings and may damage the LTC2913HDD-2#PBF.
What is the minimum capacitor value required on the TMR pin of the LTC2913HDD-2#PBF?
The TMR pin of the LTC2913HDD-2#PBF requires a minimum 10 pF capacitor to ground to ensure stable timeout operation. Values below this threshold cause unpredictable delay times or failure to assert UV/OV. A 1 nF capacitor yields a nominal 8.5 ms timeout (6–14 ms over temperature), while tying TMR directly to VCC bypasses the timer entirely. Leakage current in the capacitor must remain below 1.3 μA to maintain accuracy.
Does the LTC2913HDD-2#PBF support operation from a 12V supply?
Yes, the LTC2913HDD-2#PBF can operate from a 12V supply using its internal 6.6 V shunt regulator. A series current-limiting resistor (RZ) must be placed between the 12V source and the VCC pin to restrict input current to ≤10 mA. For example, with VCC = 12V and target ICC = 8 mA, RZ ≈ (12V − 6.6V)/8 mA = 675 Ω. This configuration is validated in Typical Application TA03 and maintains full specification compliance across temperature.
LTC2913HDD-2#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
LTC2913HDD-2#PBF FAQ
1.How can I place an order for LTC2913HDD-2#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2913HDD-2#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 LTC2913HDD-2#PBF reliable?
The price and inventory of LTC2913HDD-2#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2913HDD-2#PBF is usually 5 days.
3.What payment methods are accepted for LTC2913HDD-2#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2913HDD-2#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2913HDD-2#PBF?
LTC2913HDD-2#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2913HDD-2#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 LTC2913HDD-2#PBF?
For technical support, including LTC2913HDD-2#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2913HDD-2#PBF requirements.
6.How does Aetrix verify that LTC2913HDD-2#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2913HDD-2#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 LTC2913HDD-2#PBF meets industry standards.
7.What is the process for return or replacement of LTC2913HDD-2#PBF?
All LTC2913HDD-2#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2913HDD-2#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 LTC2913HDD-2#PBF part is unused and in its original packaging.
Return procedure for LTC2913HDD-2#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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