TL3842BDR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The TL3842BDR is a current-mode PWM controller IC from Texas Instruments supporting input voltages from 12V to 30V, designed for step-up and step-down DC-DC converter applications using SOIC-14 package. It provides 200mA gate drive output and operates up to 500kHz switching frequency. RoHS compliant and widely used in industrial and consumer SMPS designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- TL3842BDR Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Current-mode PWM control with 500kHz maximum switching frequency for compact magnetic designs
- 200mA gate drive output current for direct driving of external power MOSFETs
- Input voltage range of 12V to 30V for offline and industrial DC-DC converter applications
- Precision 5V reference output for biasing external circuitry and feedback networks
- Cycle-by-cycle current limiting for inherent overcurrent protection
- 14-pin SOIC package with industry-standard pinout compatible with 3842 family controllers
Applications
The TL3842BDR is widely used as the control IC in offline flyback converters, industrial SMPS, and DC-DC step-up converters for powering embedded systems, motor drives, and industrial instrumentation. It is also found in UPS battery chargers, LED driver ballasts, and distributed power architectures where a reliable current-mode PWM controller with direct MOSFET drive capability is required.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| 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-PDSO-G14 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 1A |
| Output Voltage-Max | 5.1V |
| Output Voltage-Min | 4.9V |
| Output Voltage-Nom | 5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 30mA |
| Supply Voltage-Max (Vsup) | 30V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | YES |
| Switcher Configuration | SINGLE |
| Switching Frequency-Max | 500kHz |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TL3842BDR:
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8
Frequently Asked Questions
What is the maximum switching frequency of the TL3842BDR?
The TL3842BDR supports a maximum switching frequency of 500kHz, set by an external RC timing network. Higher switching frequencies allow smaller magnetics and filter capacitors, reducing the overall size of SMPS designs in space-constrained industrial applications.
What control topology does the TL3842BDR use?
The TL3842BDR uses current-mode pulse-width modulation (PWM) control, where the primary switch current is sensed each cycle to regulate the peak inductor current. This provides inherent cycle-by-cycle overcurrent protection and improved line regulation compared to voltage-mode control.
Can the TL3842BDR drive a MOSFET directly?
Yes, the TL3842BDR provides a totem-pole gate drive output capable of sourcing and sinking 200mA of peak gate current, enabling it to directly drive the gate of an external power MOSFET without an intermediate gate driver stage in most low-to-medium power SMPS applications.
What is the input voltage range of the TL3842BDR?
The TL3842BDR operates from an input voltage of 12V minimum to 30V maximum, with a nominal operating voltage of 15V. It includes an undervoltage lockout (UVLO) feature that prevents operation below the minimum startup voltage, protecting against erratic behavior during power-up.
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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.
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