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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 LT1245CN8#PBF is a high-speed current mode pulse width modulation DC-DC switching controller designed for buck topology applications. It operates within an input supply voltage range of 8.2 V to 25 V and draws a typical operating supply current of 7 mA. The device supports a maximum switching frequency of 500 kHz with a maximum duty cycle of 48%. It features fast switching characteristics, including a rise time of 50 ns and a fall time of 30 ns. Designed for through-hole mounting, it is housed in an 8-pin PDIP package and functions as a non-isolated regulator suitable for industrial temperature ranges from 0°C to +100°C.
Feature Summary
- Implements high-speed current mode control architecture for rapid transient response
- Supports standard buck step-down converter topologies
- Features fast internal switch driver with nanosecond rise and fall times
Applications
- Industrial power supply systems requiring regulated step-down conversion
- Embedded electronics utilizing single-output buck regulation
- General-purpose DC-DC converter designs operating within specified voltage limits
Procurement Notes
Verify component authenticity by cross-referencing the manufacturer part number LT1245CN8#PBF with official Analog Devices documentation. Confirm that the received unit matches the specified 8-DIP through-hole package and PDIP-8 form factor. Ensure compliance with RoHS lead-free standards as indicated in official specifications. Validate that the supplier provides valid traceability records consistent with Linear Technology/Analog Devices manufacturing protocols.
Selection Notes
Select this controller for applications requiring a dedicated buck regulator solution with high-speed current mode operation. It is appropriate for designs needing a fixed 500 kHz switching frequency and a maximum 48% duty cycle. Consider the 8.2 V to 25 V operating supply range and the 7 mA quiescent current when sizing power budgets. The through-hole PDIP-8 package is suitable for prototyping or environments where surface-mount options are not preferred.
Part Context
The LT1245CN8#PBF belongs to the LT1241/LT1245 series of high-speed switching controllers manufactured by Analog Devices. These components are categorized under Power Management ICs (PMIC) specifically as switching controllers. The device represents a legacy linear technology design optimized for robust performance in non-isolated step-down configurations, distinct from modern integrated power stages.
Replacement Considerations
Consult official Analog Devices substitution guides for verified equivalents. Generic replacements may differ in switching speed, duty cycle limits, or operating voltage ranges. Verify pin compatibility and thermal characteristics before integrating alternative components into existing PCB layouts.
