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Analog Devices Inc. LTC2913HMS-2#TRPBF
- Part No.:
- LTC2913HMS-2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2913HMS-2#TRPBF.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,303
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Product details
Overview
LTC2913HMS-2#TRPBF 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 dedicated DIS pin to disable both outputs - enabling precise, low-power supply health supervision in automotive-grade systems operating from –40°C to +125°C.
For engineers reviewing the LTC2913HMS-2#TRPBF datasheet, LTC2913HMS-2#TRPBF pinout, LTC2913HMS-2#TRPBF application, or LTC2913HMS-2#TRPBF equivalent, this device delivers guaranteed UV/OV assertion down to VCC = 1 V, adjustable reset timeout via external capacitor, glitch-immune comparator inputs, and MSOP-10 packaging optimized for space-constrained industrial and automotive power management designs.
Technical Context
The LTC2913HMS-2#TRPBF implements two independent comparator pairs per monitored rail - one referenced to 0.5 V for UV detection (VHn < 0.5 V), another for OV detection (VLn > 0.5 V). All four comparators feed into shared open-drain UV and OV logic outputs with programmable timeout delay (tUOTO = 6–14 ms at CTMR = 1 nF).
Its DIS pin (Pin 8) provides active-high output disable functionality: when pulled high, UV and OV are forced weakly high except during VCC undervoltage lockout (UVLO), where UV asserts low regardless. The internal 6.5 V shunt regulator on VCC enables operation up to 6 V directly or higher with series current-limiting resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Operating Range | 2.3 V to 6 V direct supply; ≥6 V requires external current-limiting resistor due to internal 6.5 V shunt regulator |
| UV/OV Threshold Voltage | Fixed 0.5 V reference (±1.5% over –40°C to +125°C); enables precise trip point setting via external resistor dividers |
| Quiescent Current | 44 μA typical at 25°C; ensures micropower operation in battery-backed or always-on systems |
| Reset Timeout Range | 6–14 ms (–40°C to +125°C) with 1 nF TMR capacitor; scalable linearly (9 ms/nF) for custom delay tuning |
| Output Type | Open-drain UV and OV outputs with weak internal pull-up to VCC and strong ground pull-down (VOL ≤ 0.15 V at ISINK = 100 μA, VCC = 1 V) |
| UVLO Threshold | 2.0 V (±0.1 V hysteresis); guarantees reliable reset assertion during brownout conditions before functional operation begins |
| Operating Temperature | –40°C to +125°C (H-grade); qualified for under-hood automotive, industrial control, and harsh-environment embedded applications |
Pinout & Package
Package: 10-Lead MSOP (3mm × 3mm), RoHS-compliant, exposed pad optional (Pin 11 not present in MSOP; only in DFN variant). Pin count and layout match industry-standard MSOP footprint for drop-in compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VH1 (Pin 1) | Undervoltage Sense Input 1 | Triggers UV when voltage falls below 0.5 V; tie to VCC if unused |
| VL1 (Pin 2) | Overvoltage Sense Input 1 | Triggers OV when voltage rises above 0.5 V; tie to GND if unused |
| VH2 (Pin 3) | Undervoltage Sense Input 2 | Second independent UV monitor input; identical behavior to VH1 |
| VL2 (Pin 4) | Overvoltage Sense Input 2 | Second independent OV monitor input; identical behavior to VL1 |
| GND (Pin 5) | Ground Reference | Analog and digital return path; must be low-impedance connection to system ground plane |
| OV (Pin 6) | Open-Drain Overvoltage Output | Asserts low during OV fault; disabled when DIS = high; weak pull-up to VCC |
| UV (Pin 7) | Open-Drain Undervoltage Output | Asserts low during UV fault or UVLO; disabled when DIS = high; weak pull-up to VCC |
| DIS (Pin 8) | Output Disable Control | Active-high input (VIH ≥ 1.2 V); disables UV/OV outputs except during UVLO; internal 2 μA pull-down |
| TMR (Pin 9) | Timeout Timer Capacitor Node | Connect external capacitor (≥10 pF) to GND to set reset pulse width; tie to VCC to bypass timer |
| VCC (Pin 10) | Supply Input / Shunt Regulator | Accepts 2.3–6 V directly; >6 V requires series resistor to limit current to ≤10 mA; bypass with ≥0.1 μF ceramic |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail UV/OV monitoring | Simultaneously supervises two independent supplies using four sense inputs (VH1/VL1 + VH2/VL2) with shared logic outputs |
| Guaranteed operation down to 1 V VCC | Enables reliable reset assertion during deep brownout or cold-cranking events common in automotive systems |
| Adjustable reset timeout with disable | Programmable delay (6–14 ms) via single external capacitor; DIS pin allows full output disable without affecting internal monitoring |
| Glitch-immune comparator inputs | Integrated low-pass filtering prevents false triggering from transient noise without adding threshold hysteresis error |
| H-grade temperature qualification | Specified and tested across –40°C to +125°C ambient, supporting under-hood and industrial control environments |
Applications
| Automotive Power Rail Monitoring | Industrial PLC Power Integrity |
|---|---|
|
Use Scenario: Monitoring 12 V battery rail and 5 V microcontroller supply in engine control units (ECUs) during cold cranking and load dump. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting UV/OV flags to MCU reset controller and safety shutdown logic. Use Value: Prevents erroneous MCU operation during voltage transients by enforcing minimum reset pulse width (programmable via TMR capacitor) and disabling outputs only when commanded (DIS pin). |
Use Scenario: Supervising redundant 24 V DC power feeds and 3.3 V FPGA core voltage in programmable logic controllers. IC Role / Device Role / Timing Role: Independent UV/OV detection per rail feeding centralized fault manager; DIS pin used for remote reset inhibition during firmware updates. Use Value: ±1.5% threshold accuracy ensures consistent trip points across temperature, while 44 μA quiescent current minimizes standby power draw in always-on modules. |
| Server Board Voltage Sequencing | Medical Diagnostic Equipment Power Health |
|
Use Scenario: Validating proper sequencing and stability of CPU core (1.2 V), memory (1.5 V), and I/O (3.3 V) rails on high-density server motherboards. IC Role / Device Role / Timing Role: Dual-input configuration monitors two critical rails simultaneously; UV/OV outputs wired-OR'd with other supervisors for unified reset generation. Use Value: Open-drain outputs enable flexible wired-OR architecture; glitch filtering eliminates spurious resets caused by switching noise on densely routed PCBs. |
Use Scenario: Ensuring safe power-up and continuous monitoring of isolated 5 V analog sensor supplies and 3.3 V digital processing rails in portable ultrasound devices. IC Role / Device Role / Timing Role: H-grade qualification supports extended operation in thermally demanding enclosures; DIS pin used to suppress reset during controlled power cycling. Use Value: Guaranteed UV/OV assertion at VCC = 1 V ensures fail-safe behavior even during partial power loss, meeting IEC 60601-1 safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2913HDD-2#TRPBF | Same electrical specs and functionality; differs only in 3mm × 3mm DFN-10 package with exposed thermal pad (Pin 11) | Superior thermal performance and smaller footprint; requires different PCB land pattern and reflow profile | Select for space-constrained or thermally demanding layouts where MSOP thermal resistance (θJA = 120°C/W) is insufficient |
| LTC2904CMS8#TRPBF | Single-supply, 3-state programmable dual monitor; ±0.75% threshold accuracy; no DIS pin; 8-lead SOT-23 package | Lacks dual-rail independence and output disable; lower accuracy but tighter tolerance; no TMR-based timeout | Choose when monitoring only one rail with tighter threshold tolerance is sufficient and board area is extremely limited |
Compared with LTC2913HDD-2#TRPBF, the LTC2913HMS-2#TRPBF offers identical supervision functionality in a more manufacturable MSOP package with standard reflow compatibility, while LTC2904CMS8#TRPBF trades dual-rail flexibility and disable capability for higher accuracy and smaller size in single-rail applications.
Availability
LTC2913HMS-2#TRPBF is available at Aetrix Electronics and suitable for automotive ECU power integrity, industrial PLC redundancy, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2913HMS-2#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 acquired Linear Technology in 2017 and maintains full product support, documentation, and manufacturing continuity for all Linear-branded precision analog ICs.
The LTC2913HMS-2#TRPBF belongs to Linear's high-reliability voltage supervisor family, engineered specifically for mission-critical power monitoring in automotive, industrial, and medical systems where accuracy, temperature stability, and fail-safe behavior are non-negotiable.
FAQ
What is the function of the DIS pin on the LTC2913HMS-2#TRPBF?
The DIS (Disable) pin on the LTC2913HMS-2#TRPBF is an active-high control input that forces both UV and OV outputs into a weakly pulled-high state when driven above 1.2 V. This allows system-level software or hardware to inhibit reset assertion during maintenance or firmware updates. Importantly, DIS does not affect internal monitoring - UV still asserts low during VCC undervoltage lockout (UVLO) regardless of DIS state. The LTC2913HMS-2#TRPBF includes a 2 μA internal pull-down on DIS, so leaving it unconnected defaults to normal operation.
Can the LTC2913HMS-2#TRPBF monitor negative voltages?
No, the LTC2913HMS-2#TRPBF is designed exclusively for positive-voltage monitoring. Its VHn and VLn inputs are referenced to GND and operate with thresholds centered at 0.5 V - meaning VHn detects undervoltage when its voltage drops below 0.5 V, and VLn detects overvoltage when its voltage rises above 0.5 V. Neither input accepts negative voltages beyond the Absolute Maximum Rating of –0.3 V. For negative rail monitoring, Analog Devices recommends the LTC2909 or LTC2914, which explicitly support negative voltage inputs with separate biasing schemes.
How is the reset timeout period set on the LTC2913HMS-2#TRPBF?
The reset timeout period (tUOTO) on the LTC2913HMS-2#TRPBF is set by connecting an external capacitor (CTMR) between the TMR pin (Pin 9) and GND. The relationship is linear: tUOTO ≈ 9 ms per nanofarad (e.g., 1 nF yields ~8.5 ms typical). The device specifies a minimum 10 pF load; values below this may cause timing inaccuracy. To bypass the timeout entirely, tie TMR directly to VCC. The LTC2913HMS-2#TRPBF datasheet provides detailed curves showing tUOTO vs. CTMR across temperature, confirming 6–14 ms range for 1 nF at –40°C to +125°C.
What is the minimum VCC voltage required for valid output operation of the LTC2913HMS-2#TRPBF?
The LTC2913HMS-2#TRPBF guarantees valid UV and OV output assertion down to VCC = 1 V - a key feature for automotive cold-cranking and brownout resilience. Below 2.0 V, the device enters undervoltage lockout (UVLO), where UV is asserted low and OV is blocked. Above 2.1 V, the VHn/VLn comparators become fully active and control UV/OV outputs based on sensed rail conditions. The internal 6.5 V shunt regulator ensures stable operation up to 6 V; higher supplies require a series resistor to limit VCC current to ≤10 mA.
Does the LTC2913HMS-2#TRPBF have built-in hysteresis on its voltage thresholds?
No, the LTC2913HMS-2#TRPBF does not implement input hysteresis on its VHn or VLn comparators. Instead, it achieves noise immunity through integrated glitch filtering - a low-pass filter on each comparator output that requires sustained overdrive (not just amplitude) to trigger UV or OV. This avoids the accuracy penalty of hysteresis while preventing false trips from short transients. Threshold accuracy remains ±1.5% over temperature without hysteresis-induced offset, and the reset timeout (tUOTO) provides additional debouncing by holding the output asserted after fault clearance.
LTC2913HMS-2#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-MSOP
LTC2913HMS-2#TRPBF FAQ
1.How can I place an order for LTC2913HMS-2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2913HMS-2#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 LTC2913HMS-2#TRPBF reliable?
The price and inventory of LTC2913HMS-2#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2913HMS-2#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2913HMS-2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2913HMS-2#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2913HMS-2#TRPBF?
LTC2913HMS-2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2913HMS-2#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 LTC2913HMS-2#TRPBF?
For technical support, including LTC2913HMS-2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2913HMS-2#TRPBF requirements.
6.How does Aetrix verify that LTC2913HMS-2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2913HMS-2#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 LTC2913HMS-2#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2913HMS-2#TRPBF?
All LTC2913HMS-2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2913HMS-2#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 LTC2913HMS-2#TRPBF part is unused and in its original packaging.
Return procedure for LTC2913HMS-2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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