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Name: LM293ADGKRG4
Brand: Texas Instruments
SKU: LM293ADGKRG4
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 LM293ADGKRG4

Part No.:: LM293ADGKRG4

Manufacturer:: Texas Instruments

Package:: 8-TSSOP, 8-MSOP (0.118, 3.00mm Width)

Datasheet:: LM293ADGKRG4.pdf

Description:: IC DUAL GP DIFF COMPARATR 8VSSOP

In Stock:: 2108

Quantity:: Add To Cart

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LM293ADGKRG4 Specifications

Package/Case:
8-TSSOP, 8-MSOP (0.118, 3.00mm Width)
Packaging:
Tape & Reel (TR)
Series:
-
ProductStatus:
Last Time Buy
Type:
Differential
NumberofElements:
2
OutputType:
CMOS, MOS, Open-Drain, TTL
Voltage-SupplySingle/Dual(±):
2V ~ 36V, ±1V ~ 18V
Voltage-InputOffset(Max):
2mV @ 30V
Current-InputBias(Max):
0.25µA @ 5V
Current-Output(Typ):
20mA
Current-Quiescent(Max):
2.5mA
CMRRPSRR(Typ):
-
PropagationDelay(Max):
-
Hysteresis:
-
OperatingTemperature:
-25°C ~ 85°C
MountingType:
Surface Mount

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LM293ADGKRG4 information

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LM293ADGKRG4 Typical application Circuitry

LM293ADGKRG4

The LM293ADGKRG4 is a dual differential comparator chip, similar to the LM293AD, designed for comparing two input voltage levels and providing a digital output indicating the comparison result. Applications needing threshold-based decision-making or accurate voltage level detection frequently use it.

Key Applications

1. Overcurrent Protection: Used in power supply circuits to detect and respond to overcurrent conditions.

2. Voltage Level Detection: Employed in systems that require monitoring and detection of specific voltage levels.

3. Pulse Width Modulation (PWM): Applied in generating PWM signals for motor control or dimming applications.

Notable Parameters

- Supply Voltage Range: Compatible with a wide range of supply voltages, suitable for various applications.

- Input Offset Voltage: Low input offset voltage is included to ensure precise comparisons.

- Propagation Delay: Provides a rapid propagation delay in order to enable prompt reaction in dynamic systems.

Overcurrent Protection Circuit Design

1. Power Supply Connection: Attach the power supply's positive terminal to pin 8 of the LM293ADGKRG4 and its negative terminal to pin 4 of the GND pin.

2. Current Sensing Resistor: To sense the current, connect a low-value resistor (Rsen) in series with the load. The relationship between the voltage across Rsen and the load's current is proportional.

3. Reference Voltage: Set a reference voltage (Vref) corresponding to the maximum allowable current and connect it to the inverting input (pin 6) of the first comparator.

4. Sensing Voltage Input: Connect the voltage across Rsen to the non-inverting input (pin 5) of the first comparator.

5. Output Connection: Connect the LM293ADGKRG4 output (pin 7) of the first comparator to a control circuit or a microcontroller to take appropriate action when an overcurrent condition is detected.

6. Decoupling Capacitor: Attach a capacitor (Cdec) between the Vcc pin and GND to stabilize the power supply.

Considerations for Design

- Power Supply Stability: To ensure proper operation of the LM293ADGKRG4, make sure the supply voltage is within the designated range.

- Current Sensing Accuracy: Choose Rsen with a precise resistance value and low-temperature coefficient for accurate current sensing.

- Reference Voltage Precision: Use a stable and precise reference voltage source to accurately set the overcurrent threshold.

- Response Time: Consider the propagation delay of the comparator to ensure a timely response to overcurrent conditions.

By adhering to these design guidelines, the LM293ADGKRG4 can be effectively utilized in an overcurrent protection circuit, providing reliable and fast detection of overcurrent conditions to safeguard the system.

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(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 LM293ADGKRG4.

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