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SG1526BL
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Product Detailed Parameters
- Description：VOLTAGE MODE PWMS, HIGH-RELIABIL
- Series：-
- Mfr：Microchip Technology
- Package：Tray
- Output Type：Transistor Driver
- Function：Step-Down, Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Buck, Flyback
- Number of Outputs：2
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：8V ~ 35V
- Frequency - Switching：1Hz ~ 500kHz
- Duty Cycle (Max)：49%
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Enable, Reset, Soft Start
- Operating Temperature：-55°C ~ 150°C (TJ)
- 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 SG1526BL is a high-performance monolithic pulse width modulator circuit manufactured by Microchip Technology. It operates as a voltage mode PWM controller with a maximum switching frequency of 500 kHz and an output current capability of 100 mA. The device supports fixed-frequency switching regulators and other power control applications. It features a 20-pin CLLCC package and is designed for robust operation within a temperature range of -55°C to +125°C. The component includes shutdown functionality and is suitable for both transformer-less and transformer-coupled topologies.
Feature Summary
- Monolithic pulse width modulation circuit design
- Voltage mode control architecture
- Integrated shutdown capability
- High-reliability ceramic leadless chip carrier packaging
Applications
- Fixed-frequency switching regulators
- Single-ended switching power supplies
- Push-pull switching power supplies
- Transformer-coupled power control systems
Procurement Notes
Verify the specific manufacturer source, as the SG1526BL has been produced by multiple entities including Linfinity Microelectronics and Microsemi before acquisition by Microchip. Confirm that the delivered unit matches the exact 20-pin CLLCC package specification. Ensure the part meets the required military or industrial temperature grades if operating in extreme environments. Request official datasheets to confirm pinout compatibility and electrical characteristics against your design requirements.
Selection Notes
Select this component for applications requiring precise voltage-mode PWM control with high reliability. The 500 kHz switching frequency allows for compact magnetic component sizing. Consider the 100 mA output drive strength for direct gate driving of power switches. The wide operating temperature range makes it suitable for harsh environment electronics. Verify that the 20-pin CLLCC package fits the available PCB real estate and thermal management strategy.
Part Context
The SG1526 series represents a family of versatile PWM controllers widely used in power supply designs. The SG1526BL variant specifically denotes the leadless ceramic package version. This component is part of Microchip's portfolio of power management integrated circuits, continuing the legacy of high-performance switching regulators established by earlier manufacturers.
Replacement Considerations
Cross-reference with SG1526BJ-883B for similar performance in different packaging. Check for SG1526BL/883B variants which may offer specific military qualification standards. Ensure functional compatibility regarding pinout and electrical parameters when substituting.
