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SG1845Y-DESC
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Product Detailed Parameters
- Description：IC REG CTRLR FLYBACK 8CDIP
- Series：-
- Mfr：Microchip Technology
- Package：Tube
- Output Type：Transistor Driver
- Function：Step-Up/Step-Down
- Output Configuration：Positive, Isolation Capable
- Topology：Flyback
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：7.6V ~ 30V
- Frequency - Switching：1Hz ~ 500kHz
- Duty Cycle (Max)：48%
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：-
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Through Hole
- Package / Case：8-CDIP (0.300", 7.62mm)
- Supplier Device Package：8-CDIP
- Grade：Military
- Qualification：MIL-STD-883B
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Overview
The SG1845Y-DESC is a high-reliability switching controller designed for isolated flyback regulators. It operates in current-mode PWM with a maximum switching frequency of 500 kHz and supports a maximum output current of 1 A. The device functions within an input voltage range of 12 V to 25 V, with a nominal rating of 15 V. It is housed in a ceramic metal-sealed cofired flatpack (CDFP/CDIP) package featuring 10 terminals. The component is qualified under MIL-STD-883B standards and supports an operating temperature range from -55 °C to 125 °C.
Feature Summary
- Current-mode pulse width modulation control architecture
- High-reliability military-grade construction per MIL-STD-883B
- Isolated switching regulator capability for flyback applications
Applications
- Military aerospace power systems
- High-reliability isolated DC-DC converters
- Ruggedized industrial power supplies
Procurement Notes
Verify the specific suffix configuration against the manufacturer's official datasheet to ensure compatibility with required isolation and reliability standards. Confirm that the ceramic metal-sealed cofired package meets environmental constraints. Request current availability status directly from authorized distributors as this component may be subject to special order requirements.
Selection Notes
Select this component for applications requiring certified military reliability and isolated flyback control. Ensure the design accommodates the 12 V to 25 V input range and 500 kHz switching limit. Verify that the CDIP package form factor fits the mechanical layout. Consider thermal management capabilities within the specified -55 °C to 125 °C operational window.
Part Context
This part belongs to the SG1845 series of switching controllers manufactured by Microchip Technology. It is specifically designated for high-reliability environments, distinguishing it from commercial variants through its MIL-STD-883B qualification and robust ceramic packaging suitable for harsh conditions.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Consult Microchip Technology for direct replacements or cross-reference options.
