ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG CTRLR MULT TOP 14SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Output Type：Transistor Driver
- Function：Step-Up, Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Boost, Flyback, Forward
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：7.6V ~ 30V
- Frequency - Switching：Up to 500kHz
- Duty Cycle (Max)：48%
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Frequency Control
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：14-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：14-SOIC
- Grade：-
- Qualification：-
Download product information
Overview
The TL2845DRG4 is a current-mode PWM controller manufactured by Texas Instruments, designed for switching power supply applications. It supports boost, flyback, and forward topologies with a single output. The device operates within a supply voltage range of 7.6V to 30V and features a maximum switching frequency of 500 kHz. It provides a maximum duty cycle of 48% and includes an output stage capable of sourcing 1 A. The component is housed in a 14-SOIC package and functions across a temperature range of -40°C to +85°C.
Feature Summary
- Implements current-mode pulse width modulation control for stable regulation
- Supports versatile converter topologies including boost, flyback, and forward configurations
- Features a high-current output driver stage for direct gate drive capability
Applications
- Boost DC-DC converter designs
- Flyback power supply implementations
- Forward topology power converters
Procurement Notes
Verify the specific suffix 'G4' indicates compliance with RoHS standards and lead-free manufacturing requirements as defined by Texas Instruments. Confirm that the 14-SOIC package dimensions match the target PCB footprint. Ensure the operating temperature range aligns with the environmental conditions of the final assembly. Cross-reference the datasheet revision to confirm pinout compatibility with existing designs.
Selection Notes
Select this component when current-mode control is required for improved transient response compared to voltage-mode alternatives. Consider the 500 kHz switching frequency limit for balancing efficiency and component size. Evaluate the 1 A output drive strength against the gate charge requirements of the intended power switches. Verify input voltage constraints fall within the specified 7.6V to 30V operational window.
Part Context
This part belongs to the TL284x series of switching controllers from Texas Instruments. It serves as a core control element in isolated and non-isolated power conversion systems. The device integrates essential PWM logic and error amplification functions into a compact surface-mount package, facilitating efficient design of industrial and commercial power supplies.
Replacement Considerations
The TL2845DR is a compatible alternative within the same product family. Verify pinout compatibility and electrical parameter alignment before substitution. Ensure the replacement variant meets the same thermal and packaging requirements for the application.
