TL2842P Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
TL2842P is a current-mode PWM switching regulator controller from Texas Instruments in an 8-pin DIP package. It supports input voltages from 12 V to 30 V with a nominal 15 V rail, enabling off-line and DC/DC flyback or forward converter designs. Available in stock worldwide with competitive pricing for industrial and power supply applications.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- TL2842P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7262(MOQ 50)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TL2842P?
- Current-mode PWM control with cycle-by-cycle current limiting provides inherent overcurrent protection and simplifies loop compensation
- Wide input voltage range of 12 V to 30 V (nominal 15 V) supports both offline power supplies and industrial DC/DC converters
- 8-pin DIP (PDIP-T8) package enables through-hole prototyping and easy replacement in legacy industrial power supply designs
What is TL2842P used for?
The TL2842P is a widely used current-mode PWM controller for off-line flyback and forward converter power supplies operating from a 15 V auxiliary rail, common in industrial equipment and telecom power bricks. Its cycle-by-cycle peak current limiting and precise oscillator frequency setting make it reliable in isolated DC/DC converters supplying 5 V or 12 V outputs for PLC and motor-drive control boards. Repair technicians and prototyping engineers also choose the 8-pin DIP form factor for bench evaluation and direct in-circuit replacement of legacy UC2842-compatible controllers.
What are the specifications of TL2842P?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 30V |
| Input Voltage-Min | 12V |
| Input Voltage-Nom | 15V |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 1A |
| Output Voltage-Max | 5.05V |
| Output Voltage-Min | 4.95V |
| Output Voltage-Nom | 5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 30mA |
| Supply Voltage-Max (Vsup) | 30V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | NO |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 500kHz |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Mexico |
Where can I find the TL2842P datasheet?
TL2842P Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TL2842P?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does the TL2842P support for off-line power supply designs?
The TL2842P operates with input voltages from 12 V to 30 V, with a nominal design point of 15 V. In off-line flyback converters, the controller is typically powered from a 15 V auxiliary winding, allowing the IC to regulate the main output from line voltages spanning 85 VAC to 265 VAC with appropriate primary-side components.
How does current-mode control in the TL2842P benefit flyback converter stability compared to voltage-mode controllers?
Current-mode PWM in the TL2842P senses the peak inductor current each switching cycle and uses it as an inner feedback loop, reducing the power stage to a first-order system and simplifying the compensator to a single-pole design. This also provides inherent cycle-by-cycle current limiting, protecting the primary switch against faults without additional discrete sensing circuitry, which is especially valuable in isolated flyback topologies operating at switching frequencies between 50 kHz and 500 kHz.
When is the TL2842P a suitable drop-in replacement for UC2842 or UC3842 controllers in legacy designs?
The TL2842P is pin-compatible with UC2842 and UC3842 devices in the 8-pin PDIP package, so it can replace aged controllers in existing PCB layouts without any schematic changes. Engineers maintaining 15 V to 30 V offline power supplies in industrial or HVAC control equipment find it a cost-effective refurbishment option, provided the application falls within the TL2842P startup threshold of 16 V and operating range down to 12 V.
What switching frequency range is achievable with the TL2842P and how is it set?
The oscillator frequency of the TL2842P is set by an external resistor and capacitor connected to the RT and CT pins, supporting frequencies from under 10 kHz to approximately 500 kHz. Choosing a 10 kΩ resistor and 1 nF capacitor sets operation near 100 kHz, a common target for compact flyback converters that balances core loss in ferrite transformers with acceptable switching losses in power MOSFETs.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 50+ | $1.0094 | $50.47 |
| 100+ | $0.9555 | $95.55 |
| 250+ | $0.8987 | $224.67 |
| 1000+ | $0.8145 | $814.50 |
| 5000+ | $0.7900 | $3950.00 |
| 10000+ | $0.7262 | $7262.00 |
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