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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 8SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- 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：-40°C ~ 100°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SO
- Grade：-
- Qualification：-
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Overview
The LT1241IS8#TRPBF is an 8-pin, fixed-frequency, current mode pulse width modulator designed for high-speed switching applications. It operates as a step-down DC-DC controller with a switching frequency of 500kHz. The device supports a supply voltage range of 8.2V to 25V and features a maximum duty cycle of 48%. It includes a transistor driver capable of handling up to 1A output current. The component is available in an SOIC-8 surface-mount package and is rated for an operating temperature range from -40°C to +100°C.
Feature Summary
- Implements current mode control architecture for improved transient response and loop stability
- Features a high-speed switching capability optimized for efficient power management at fixed frequencies
- Includes integrated transistor driver functionality for direct gate drive control
Applications
- Step-down DC-DC converter designs requiring fixed frequency operation
- High-speed switching controllers for efficient power management systems
- Industrial power supplies utilizing current mode modulation techniques
Procurement Notes
Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm that the IS8 designation corresponds to the industrial temperature grade and SOIC-8 package variant required for your design. Ensure compatibility with existing PCB footprints and thermal management strategies before finalizing procurement orders.
Selection Notes
Select this component for applications requiring a robust current mode PWM controller with a fixed 500kHz switching frequency. It is suitable for designs needing a wide input voltage range up to 25V and an operating temperature range extending to 100°C. Consider the 48% maximum duty cycle limitation when designing step-down topologies to ensure proper regulation under all load conditions.
Part Context
The LT1241 series consists of 8-pin, fixed-frequency, current mode pulse width modulators. These devices serve as improved plug-compatible versions of earlier industry-standard models. The series provides enhanced performance characteristics while maintaining pin compatibility, facilitating easier upgrades or replacements in existing power supply architectures without significant redesign efforts.
Replacement Considerations
The LT1241 series devices are described as improved plug-compatible versions of industry standards. Verify pin-for-pin compatibility with legacy controllers if replacing older units. Ensure that the replacement part matches the required switching frequency and current mode control specifications to maintain system stability.
