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TL3842P
IC REG CTRLR BST FLYBK PWM 8-DIP
- Manufacturer
- Mfr. Part #TL3842P
- Package PDIP (P)-8
- Datasheet
- In Stock5528
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Specifications
| Package | Tube |
| ProductStatus | Active |
| OutputType | Transistor Driver |
| Function | Step-Up, Step-Up/Step-Down |
| OutputConfiguration | Positive |
| Topology | Boost, Flyback, Forward |
| NumberofOutputs | 1 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 10V ~ 30V |
| Frequency-Switching | Up to 500kHz |
| DutyCycle(Max) | 97% |
| SynchronousRectifier | No |
| ClockSync | No |
| ControlFeatures | Frequency Control |
| OperatingTemperature | 0°C ~ 70°C (TA) |
| MountingType | Through Hole |
| Package/Case | 8-DIP (0.300, 7.62mm) |
Overview
Description
Features
1. Current Mode Control: Provides improved performance for voltage regulation, transient response, and loop stability.
2. Fixed-Frequency Operation: Typically operates at a fixed frequency around 100 kHz, depending on external components.
3. High-Performance Current Limiting: Employs cycle-by-cycle current limiting to protect against overcurrent conditions.
4. Low Start-Up and Operating Current: Features low start-up (0.5 mA typical) and operating current (17 mA maximum) to enhance efficiency.
5. Built-In Soft Start: Gradually increases the duty cycle at start-up to prevent current spikes.
6. Undervoltage Lockout (UVLO): Ensures the controller starts up only when the supply voltage is within safe limits.
7. Pin Configuration: Comes in an 8-pin DIP package, which is easy to integrate into various circuit designs.
8. Output Drive Capability: Can drive power MOSFETs directly, supporting medium to high power applications.
These features make the TL3842P suitable for use in offline and DC-DC converter applications, such as in power supplies for consumer electronics and industrial systems.
Package
Pinout
1. Pin 1 (COMP): Compensation. Used to compensate the control loop.
2. Pin 2 (VFB): Voltage Feedback. Receives the feedback voltage from the power supply output to regulate the PWM.
3. Pin 3 (Current Sense): Monitors the current through the power MOSFET and provides current limiting.
4. Pin 4 (RT/CT): Timing Resistor/Capacitor. Sets the oscillator frequency.
5. Pin 5 (GND): Ground. Common return path for power and signals.
6. Pin 6 (Output): Drives the gate of the power MOSFET.
7. Pin 7 (VCC): Supply Voltage. Powers the IC.
8. Pin 8 (VREF): Reference Voltage. Provides a stable voltage reference for internal circuitry.
These pins work together to implement a control scheme that regulates power supply output by varying PWM duty cycles based on feedback and current sensing inputs.
Manufacturer
Application
Equivalent
1. UC3842
2. KA3842
3. LM3842
4. NCP3842
5. SG3842
These components share similar functionalities and are often pin-compatible, making them interchangeable in many applications. Always verify specific requirements and specifications before substitution to ensure compatibility with your circuit.
Shipping
Shipping MethodsWe
offer global shipping services through DHL, FedEx, TNT, UPS, or any other forwarder of your choice.
Shipping Fee Reference (DHL/FedEx):
DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.
FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.
UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.
TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.
EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.
Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.
Payments
Payment Methods
The Payment term is 100% Prepaid.
Currently, we only accept the below payment methods:
1. PayPal
2. Credit/ Debit Card
3. Wire Transfer
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