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SG1525AL
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Product Detailed Parameters
- Description：VOLTAGE MODE PWMS,
- Series：-
- Mfr：Microchip Technology
- Package：Tray
- Output Type：Transistor Driver
- Function：Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Push-Pull
- Number of Outputs：2
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：8V ~ 35V
- Frequency - Switching：100Hz ~ 350kHz
- Duty Cycle (Max)：49%
- Synchronous Rectifier：Yes
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：Enable, Frequency Control, Soft Start
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-CLCC
- Supplier Device Package：20-CLCC (8.89x8.89)
- Grade：Military
- Qualification：MIL-STD-883
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Overview
The SG1525AL is a voltage-mode PWM controller manufactured by Microchip Technology. It features a push-pull output topology designed for step-up and step-down DC-DC converter applications. The device operates with a maximum switching frequency of 350 kHz and provides a peak output drive current of 400 mA. It is available in a 20-pin ceramic leaded chip carrier (CLCC) package, specifically the SG1525AL/883B variant, ensuring compliance with military reliability standards.
Feature Summary
- Implements voltage-mode pulse width modulation control strategy
- Provides high-current push-pull output stage for transformer drive
- Supports flexible topologies including boost, buck, and flyback configurations
Applications
- Military-grade power supply systems
- High-reliability aerospace electronic equipment
- Industrial DC-DC conversion modules
Procurement Notes
Verify that the specific part number includes the /883B suffix to confirm compliance with MIL-PRF-38534 or equivalent military quality standards. Confirm the package type matches the required 20-pin CLCC configuration. Ensure the manufacturer designation aligns with authorized production sources to guarantee component authenticity and traceability.
Selection Notes
Select this component when designing isolated power converters requiring robust push-pull drive capabilities. The voltage-mode architecture offers stable regulation characteristics suitable for wide input voltage ranges. Consider the thermal performance and pinout compatibility during PCB layout to ensure optimal circuit efficiency and signal integrity.
Part Context
This integrated circuit belongs to the SG1525 family of switching regulators. It serves as a foundational control element for various power conversion architectures. The device is engineered to meet stringent environmental and operational requirements typical of defense and industrial sectors.
Replacement Considerations
Cross-reference with other SG1525 variants for pin-compatible upgrades. Verify functional equivalence regarding switching frequency limits and drive current specifications before substitution.
