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Name: TPS3705-50DR
Brand: Texas Instruments
SKU: TPS3705-50DR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Texas Instruments TPS3705-50DR

Part No.:: TPS3705-50DR

Manufacturer:: Texas Instruments

Package:: 8-SOIC (0.154, 3.90mm Width)

Datasheet:: TPS3705-50DR.pdf

Description:: IC SUPERVISOR 1 CHANNEL 8SOIC

In Stock:: 3146

Quantity:: Add To Cart

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TPS3705-50DR Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Active
Type:
Simple Reset/Power-On Reset
NumberofVoltagesMonitored:
1
Voltage-Threshold:
4.55V
Output:
Push-Pull, Totem Pole
Reset:
Active Low
ResetTimeout:
140ms Minimum
OperatingTemperature:
-40°C ~ 85°C (TA)
MountingType:
Surface Mount

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TPS3705-50DR information

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TPS3705-50DR Typical application Circuitry

TPS3705-50DR

The TPS3705-50DR is a supervisory circuit designed for power monitoring and management in electronic systems. It incorporates a dual-supply monitor which can supervise two voltage levels simultaneously. This chip is particularly useful in ensuring system reliability and stability by monitoring critical power supplies and triggering a reset when voltage levels fall outside preset thresholds.

Application Scenarios of the TPS3705-50DR

1. Computing Systems: In PCs and servers, it monitors the CPU and system power rails to ensure they are within operational limits.

2. Telecommunications Equipment: For monitoring power supplies in communication devices to prevent failures due to voltage anomalies.

Key Parameters and Characteristics of the TPS3705-50DR

- Dual Voltage Monitoring: Capable of supervising two separate voltage levels simultaneously.

- Programmable Reset Thresholds: Allows customization of voltage thresholds for reset initiation.

- Low Power Consumption: Ideal for continuous operation in power-sensitive applications.

- Independent Watchdog Timer: Provides an additional layer of system supervision.

- Wide Operating Voltage Range: Suitable for various system power specifications.

- Manual Reset Capability: Offers the option for user-initiated system resets.

- Power-On Reset Generator: Automatically initiates a reset when power is first applied.

- Compact SOIC-8 Package: Suitable for space-constrained applications.

Detailed Circuit Connection for Computing Systems

1. Voltage Monitoring Inputs (SENSE1, SENSE2 Pins): Connect SENSE1 to the CPU power rail and SENSE2 to the system power rail for simultaneous monitoring.

2. System Ground (GND Pin): Attach this pin to the system's ground for a stable voltage reference.

3. Reset Output (RESET Pin): Interface this pin with the reset control line of the motherboard. It triggers a system reset if either monitored voltage falls below its threshold.

4. Supply Voltage (VDD Pin): Connect this pin to a stable power source within the computing system to power the supervisory circuit.

5. Watchdog Timer Input (WDT Pin): Interface with a microcontroller or timer output for regular watchdog triggering.

6. Manual Reset Input (MR Pin): Connect to a manual reset switch for user-initiated system resets.

7. Bypass Capacitor (Near VDD and GND): Place a capacitor close to these pins to stabilize the supply voltage and filter noise.

8. Watchdog Timing Capacitor (CT Pin): Add a capacitor to set the timing for the watchdog timer.

Design Considerations

- Voltage Threshold Accuracy: Essential for reliable system monitoring and protection.

- Energy Efficiency: Optimizing the circuit to minimize power consumption in the computing system.

- Reset Timing: Setting the correct duration for the reset signal to ensure proper system recovery.

- Noise Immunity: Implementing strategies to reduce electrical noise and prevent false triggers.

- Thermal Stability: Ensuring the TPS3705-50DR chip operates within its temperature range, vital in computing environments.

- Compact Integration: Efficiently fitting the chip within the constrained space of a computer motherboard.

- Watchdog Timer Functionality: Configuring the watchdog timer correctly to safeguard against system lock-up.

- Manual Reset Function: If implemented, ensuring easy accessibility for manual system resets.

Incorporating the TPS3705-50DR into computing systems requires a detailed approach, focusing on these considerations. Its role as a dual-supply monitor is crucial for maintaining the operational integrity of computing systems, particularly in scenarios where consistent performance and stability are paramount.

TPS3705-50DR FAQ

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6. What is the process for return or replacement of TPS3705-50DR?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the TPS3705-50DR we delivered, we will accept the replacement or return of the TPS3705-50DR only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of TPS3705-50DR.

(3)The PartNo is unused and only in the original unpacked packaging.

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(2)Obtain Requesting Return Authorizations