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HomeProductsIntegrated Circuits (ICs)Specialized ICsLTC2907ITS8#PBF
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LTC2907ITS8#PBF - Linear Technology / Analog Devices

Manufacturer Part Number
LTC2907ITS8#PBF
Manufacturer
Linear Technology
Allelco Part Number
32D-LTC2907ITS8#PBF
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
7,900 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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Specifications

LTC2907ITS8#PBF Tech Specifications
Linear Technology / Analog Devices - LTC2907ITS8#PBF technical specifications, attributes, parameters and parts with similar specifications to Linear Technology / Analog Devices - LTC2907ITS8#PBF

Product Attribute Attribute Value
Part Number LTC2907ITS8#PBF
Package DAC91001
Description DAC91001
Stock Condition Get 7900 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer Linear Technology
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Frequently Asked Questions(FAQ)

How does the LTC2907ITS8#PBF support system monitoring in low-voltage applications, and what are its key voltage thresholds?
The LTC2907ITS8#PBF is designed for precision system-level voltage monitoring in space-constrained environments. It provides a single-channel power supply supervisor with an adjustable under-voltage threshold ranging from 1.6V to 4.05V, set via an external resistor divider. This makes it suitable for battery-powered systems, IoT nodes, and portable electronics where maintaining stable operation below critical voltages is essential. The device features a ±2% accuracy over temperature and a typical hysteresis of 30mV, ensuring reliable reset assertion without oscillation near the threshold. With a supply current of just 2µA in standby mode, it minimizes quiescent power loss in always-on monitoring scenarios.
Can the LTC2907ITS8#PBF be used in multi-supply systems, and how does it compare to dedicated sequencing controllers like the LTC2937?
While the LTC2907ITS8#PBF excels as a simple, cost-effective under-voltage monitor for a single rail, it lacks the advanced timing and sequencing capabilities found in controllers such as the LTC2937. Unlike the LTC2937, which supports multiple programmable rails with precise delay control and fault reporting, the LTC2907 performs only basic undervoltage detection on one supply. For systems requiring coordinated power-up/power-down sequences across several rails, the LTC2937 offers superior flexibility and integration. However, for single-supply microcontrollers or sensors where simplicity suffices, the LTC2907 remains a compact and efficient choice due to its SOT23-8 footprint and ultra-low quiescent current.
What design considerations are critical when selecting pull-up resistors for the open-drain RESET output of the LTC2907ITS8#PBF?
Proper selection of the pull-up resistor to the RESET output requires balancing response time, power consumption, and noise immunity. A typical value ranges from 10kΩ to 100kΩ depending on the microcontroller's input characteristics and required reset pulse width. A 47kΩ resistor provides a reasonable compromise, drawing minimal current while ensuring adequate drive strength during active-low assertion. Care must also be taken to avoid excessively long traces between the LTC2907ITS8#PBF and the RESET pin, as parasitic capacitance can slow edge transitions. Additionally, decoupling capacitors near the IC and the RESET line help suppress transient glitches that might falsely trigger resets.
How does the LTC2907ITS8#PBF handle supply transients, and what role does hysteresis play in preventing nuisance resets?
The LTC2907ITS8#PBF incorporates built-in hysteresis of approximately 30mV to prevent chatter during supply ramps near the threshold voltage. This means the reset signal deasserts only when the monitored voltage exceeds the threshold plus hysteresis, rather than immediately upon crossing. As a result, brief dips or slow settling transients that momentarily fall below but recover above the trip point will not cause repeated reset pulses. This behavior is crucial in noisy industrial environments or during motor startup events where supply droops may be significant but non-faulty.
Is the LTC2907ITS8#PBF suitable for automotive-grade applications, and what limitations should engineers consider?
Although the LTC2907ITS8#PBF operates over an extended commercial temperature range (typically -40°C to +85°C), it is not qualified to automotive-grade standards such as AEC-Q100. Therefore, it is generally unsuitable for mission-critical automotive systems where functional safety or long-term reliability under extreme thermal cycling is required. Engineers seeking automotive compliance should evaluate alternatives with certified variants or higher qualification levels. That said, in non-automotive industrial or consumer embedded designs within its specified operating envelope, the part performs reliably and offers excellent value.
How does the LTC2907ITS8#PBF compare to discrete comparator-based solutions for under-voltage detection?
Compared to discrete comparator circuits using op-amps or dedicated comparators, the LTC2907ITS8#PBF integrates reference, comparator, and open-drain output stages into a single package, reducing component count and board space. Discrete approaches often require additional resistors for threshold setting, filtering components, and level-shifting circuitry, increasing complexity and potential failure points. Moreover, the LTC2907ITS8#PBF’s internal reference ensures better stability over temperature than many discrete solutions, and its ultra-low quiescent current (2µA typ.) outperforms most general-purpose comparators in power-sensitive applications. Only highly optimized discrete designs with precision references might match its integration benefits, but typically at the expense of cost and layout simplicity.
What is the recommended layout practice for minimizing noise-induced false triggers with the LTC2907ITS8#PBF?
To minimize susceptibility to noise, the LTC2907ITS8#PBF should be placed close to the power rail being monitored, with short, direct connections to the sense inputs. A 0.1µF ceramic capacitor should be mounted directly at the VCC pin to decouple high-frequency transients. The feedback network resistors forming the threshold divider must also be routed carefully—preferably with Kelvin connections to avoid trace resistance effects—and shielded from switching nodes if possible. Grounding should follow a star topology with a quiet analog ground plane, separate from noisy digital return paths, especially important in mixed-signal designs.
Can the LTC2907ITS8#PBF monitor multiple supplies using external components, and if so, how?
No, the LTC2907ITS8#PBF is a single-channel supervisor and cannot internally monitor multiple rails. However, multiple instances can be deployed on different supplies within the same system. Each LTC2907ITS8#PBF requires its own threshold-setting resistor network and reset line. Alternatively, engineers may use external multiplexers or additional supervisory ICs alongside the LTC2907ITS8#PBF for multi-rail monitoring, though this increases bill of materials and complexity. For simpler dual-rail needs, combining the LTC2907ITS8#PBF with another identical unit may be more practical than integrating a complex multi-channel supervisor.
What happens to the RESET output of the LTC2907ITS8#PBF during initial power-up before the IC is fully powered?
Upon application of VCC, the LTC2907ITS8#PBF’s RESET output begins in a known state only after the internal circuitry powers up sufficiently to activate the comparator and reference. Until then, the open-drain RESET pin is effectively floating. Once VCC reaches approximately 1.2V (the minimum operating voltage), the device initializes and starts monitoring the threshold. During this brief window, the RESET line may briefly float high if pulled up externally, potentially causing unintended resets. To mitigate this, designers sometimes add a small RC delay at VCC or ensure the microcontroller has a robust power-on reset circuit independent of the LTC2907ITS8#PBF.
How accurately can the threshold of the LTC2907ITS8#PBF be controlled in production, and what calibration strategy is recommended?
The LTC2907ITS8#PBF offers factory-trimmed threshold accuracy of ±2% over the full operating temperature range. In most applications, no calibration is needed. However, if tighter matching to a specific battery curve or supply characteristic is required, the threshold can be fine-tuned using precision resistors (e.g., 0.1% tolerance) in the feedback divider. For batch consistency, it’s advisable to characterize a few units under worst-case conditions and adjust the divider accordingly. Avoid trimming individual devices unless necessary, as the inherent precision usually eliminates the need for post-manufacturing adjustments in standard designs.
Does the LTC2907ITS8#PBF provide any diagnostic or status information beyond basic under-voltage detection?
No, the LTC2907ITS8#PBF offers only a single open-drain RESET output indicating whether the monitored voltage is above or below the programmed threshold. It does not include flags for overvoltage, brownout duration, or historical fault storage. There is no communication interface (I²C, SPI, etc.), and no internal registers for status readout. For applications demanding richer diagnostics—such as logging power anomalies or reporting multiple fault types—engineers must supplement the LTC2907ITS8#PBF with additional monitoring logic or a more feature-rich supervisor IC.
What impact does supply current draw have on battery life when using the LTC2907ITS8#PBF in coin cell-powered devices?
The LTC2907ITS8#PBF consumes only 2µA typical quiescent current, making it exceptionally suitable for energy-constrained systems like coin cell-powered loggers or remote sensors. Assuming a CR2032 battery with 225mAh capacity, continuous operation would theoretically last over 2.8 years based solely on supervisor current draw. Even accounting for microcontroller sleep currents and other loads, the LTC2907ITS8#PBF contributes negligibly to overall drain. This efficiency enables longer deployment intervals and reduced maintenance costs in distributed sensing networks.
How does the SOT23-8 packaging affect thermal performance and PCB real estate compared to larger packages?
The SOT23-8 package of the LTC2907ITS8#PBF occupies minimal board area—approximately 2.9 mm × 1.6 mm—making it ideal for compact designs. Thermal performance is limited due to the small die size and lack of exposed pad; however, in typical low-power supervision tasks, heat generation is negligible. Maximum junction-to-ambient thermal resistance is around 200°C/W, but actual operating temperatures remain well below derating limits unless subjected to sustained overloads. For most applications, natural convection cooling suffices. Engineers should still maintain proper copper pour and avoid routing high-current traces underneath to preserve electrical isolation and mechanical stability.
Can the LTC2907ITS8#PBF replace a watchdog timer in a microcontroller-based system?
No, the LTC2907ITS8#PBF functions strictly as a power supply monitor and cannot detect software hangs or CPU lockups. It responds exclusively to voltage conditions and has no capability to generate periodic pulses or respond to external stimuli. In systems requiring both brownout protection and software recovery assurance, designers must implement a separate watchdog timer (either hardware or software-based) alongside the LTC2907ITS8#PBF. Combining both yields robust protection against both supply faults and firmware failures.
What precautions should be taken when replacing the LTC2907ITS8#PBF in an existing design to ensure compatibility?
When substituting the LTC2907ITS8#PBF, verify that all pin functions align with the replacement part, particularly the open-drain RESET output and threshold input configuration. Confirm that the new device supports the same operating voltage range and threshold adjustability. Ensure the replacement IC has equivalent or better specifications for accuracy, hysteresis, and quiescent current. Also, validate the physical footprint (SOT23-8) and solderability in automated assembly processes. Finally, test the complete system under end-use environmental conditions to confirm stable reset behavior across temperature and load variations.

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Evaluation: 10 Articles

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    Aug 5, 2026

    Purchased this DSP controller for a motor control application. Stable processing performance and very good response under varying loads.

  • FPGA***dio
    Jul 30, 2026

    This FPGA handled our logic design without any surprises. Configuration completed quickly and timing met the project requirements.

  • Nord***mbedded
    Jul 20, 2026

    Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.

  • Arch***ct
    Jul 15, 2026

    Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

  • FPGA***lorer88
    Jul 7, 2026

    The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

  • Nath***oleman
    Jun 29, 2026

    Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

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Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
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Linear Technology / Analog Devices

LTC2907ITS8#PBF

Linear Technology / Analog Devices
32D-LTC2907ITS8#PBF

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