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Product Detailed Parameters
- Description：IC REG CTRLR MULT TOPOLOGY 8DIP
- Series：-
- Mfr：Texas Instruments
- Package：Tube,Tube
- 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：Through Hole
- Package / Case：8-DIP (0.300", 7.62mm)
- Supplier Device Package：8-PDIP
- Grade：-
- Qualification：-
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Overview
The TL2845BP is a high-performance current-mode PWM controller manufactured by Texas Instruments. It operates within an input voltage range of 12 V to 30 V, with a nominal rating of 15 V. The device supports switching frequencies up to 500 kHz and provides a maximum duty cycle of 48%. It features a robust output stage capable of sourcing 1 A drive current with rise and fall times of 50 ns. Designed for industrial reliability, it functions across an extended temperature range from -40°C to +85°C. The component is housed in an 8-pin PDIP package.
Feature Summary
- Implements current-mode pulse width modulation control architecture
- Provides high-current transistor driver output stage
- Supports boost, flyback, and forward converter topologies
Applications
- Boost DC-DC converters
- Flyback power supplies
- Forward converter designs
Procurement Notes
Verify the specific suffix 'BP' corresponds to the through-hole PDIP package variant rather than surface-mount options like DR or BDR. Confirm RoHS compliance status and check for lead-free designations such as G4 suffixes if required. Ensure the ordering part number matches the exact pin count and thermal specifications documented in the official datasheet.
Selection Notes
Select this component for applications requiring current-mode control with high peak output drive capability. It is suitable for isolated and non-isolated topologies operating at frequencies up to 500 kHz. Consider the 8-pin DIP form factor for prototyping or legacy board layouts where surface-mount solutions are not feasible.
Part Context
This part belongs to the TLx84x family of switching controllers from Texas Instruments. It shares functional similarities with other members like the TL3845 series but differs in package type and specific electrical tolerances. The BP designation indicates a through-hole plastic dual in-line package configuration distinct from SOIC variants.
Replacement Considerations
Public confirmed substitute part numbers: TL2845BDR, TL2845DR, TL3845BDR-8.
