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SG1526BL-883B
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Product Detailed Parameters
- Description：VOLTAGE MODE PWMS, HIGH-RELIABIL
- Series：-
- Mfr：Microchip Technology
- Package：Tube
- 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-883B is a high-reliability voltage mode PWM controller designed for buck and flyback switching regulators. It operates within an input voltage range of 8V to 35V and supports switching frequencies up to 500kHz. The device features two outputs with a maximum output current of 100mA and a maximum duty cycle of 49%. It functions in an extended temperature range from -55°C to +125°C and utilizes a 20-pin ceramic leaded chip carrier (CLCC) package.
Feature Summary
- Voltage mode pulse width modulation control architecture
- High-reliability construction suitable for demanding environments
- Integrated shutdown capability for power management
Applications
- Fixed-frequency switching regulators
- Isolated power supply designs
- Military and aerospace power systems
Procurement Notes
Verify the specific suffix designation against the manufacturer's official documentation to ensure correct pinout and electrical specifications. Confirm that the ceramic package variant matches the thermal and mechanical requirements of the target application. Cross-reference the lot traceability data if required for quality assurance protocols.
Selection Notes
Select this component when high reliability and wide temperature operation are critical. Ensure the design accommodates the 49% maximum duty cycle limitation. Verify that the 100mA output drive capability meets the gate charge requirements of the external power switches in the intended topology.
Part Context
This part belongs to the SG1526B series, which includes variants such as SG1526BJ-883B. While sharing core PWM functionality, differences exist in package types and specific military qualification standards across the series. The BL variant specifically denotes the ceramic leaded chip carrier form factor.
Replacement Considerations
SG1526BL/883B
FAQ
What is the maximum operating frequency?
The maximum switching frequency is 500kHz.
Does the device support isolated topologies?
Yes, it is designed for use in isolated switching regulator applications such as flyback converters.
