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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 8DIP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive, Isolation Capable
- Topology：Buck
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：8.2V ~ 25V
- Frequency - Switching：500kHz
- Duty Cycle (Max)：48%
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Frequency Control
- Operating Temperature：0°C ~ 100°C (TJ)
- 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 LT1241CN8#PBF is a fixed-frequency, current-mode pulse width modulator manufactured by Analog Devices Inc. It operates within an input voltage range of 8.2 V to 25 V and supports a switching frequency of 500 kHz. The device features a maximum duty cycle of 48% and provides one output channel with a drive capability of 1 A at 5 V. Designed for through-hole installation in an 8-PDIP package, it functions as a non-isolated buck converter controller. The component operates reliably across a temperature range of 0°C to +100°C, consuming a typical operating supply current of 7 mA.
Feature Summary
- Implements current mode control architecture for high-speed pulse width modulation
- Supports step-down DC-DC topology with positive, isolation-capable output configuration
- Features internal transistor driver stage for direct switch control
Applications
- High-speed current mode pulse width modulation circuits
- Non-isolated buck converter designs
- Positive output step-down DC-DC controller applications
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence before procurement. Confirm the PDIP-8 through-hole package dimensions match the target PCB footprint. Ensure the 8.2 V to 25 V supply range aligns with the system power architecture. Validate that the 500 kHz switching frequency meets electromagnetic interference requirements for the intended application environment.
Selection Notes
Select this component when a fixed-frequency current-mode controller is required for buck topologies. The 8-PDIP package suits prototyping or low-volume through-hole designs. Consider the 48% maximum duty cycle limitation for input-to-output voltage ratios. The 500 kHz frequency balances efficiency and component size for standard power stages.
Part Context
The LT1241CN8#PBF belongs to the LT1241 series of 8-pin, fixed-frequency, current mode pulse width modulators. These devices serve as improved plug-compatible versions of industry-standard controllers. The series focuses on providing reliable regulation for step-down power supplies with simplified external component requirements.
Replacement Considerations
LT1241CS8#PBF: Identical functional specifications but housed in an 8-SOIC surface-mount package instead of PDIP-8.
