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Product Detailed Parameters
- Description：SWITCHING VOLTAGE REGULATORS 100
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Output Type：Transistor Driver
- Function：Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Buck-Boost
- Number of Outputs：1
- Output Phases：2
- Voltage - Supply (Vcc/Vdd)：6V ~ 100V
- Frequency - Switching：80kHz ~ 600kHz
- Duty Cycle (Max)：-
- Synchronous Rectifier：Yes
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：-
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：38-TSSOP-EP
- Grade：-
- Qualification：-
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Overview
The LT8228IFE#PBF is a bidirectional synchronous buck/boost controller from Analog Devices, designed for 100V power systems. It supports constant-current or constant-voltage regulation with automatic or external power flow control. Key electrical parameters include an input/output voltage range of 6V to 100V and a programmable switching frequency between 80kHz and 600kHz. The device features independent compensation networks for boost and buck modes, ensuring stable transient response. It operates within a temperature range of -40°C to +125°C and is housed in a 38-lead TSSOP package.
Feature Summary
- Bidirectional energy management with automatic or external power flow direction control
- Independent compensation networks for optimized transient response in both buck and boost modes
- Comprehensive protection including reverse supply, reverse current, short-circuit, and negative voltage tolerance
- Masterless fault-tolerant load sharing allowing parallel operation without a master controller
Applications
- 48V/12V dual-battery automotive systems
- Hybrid and electric vehicle power redundancy
- High-power backup and power stabilization systems
- Complex power systems requiring bidirectional energy transfer
Procurement Notes
Verify the specific suffix #PBF indicates tube packaging when ordering. Confirm the IFE variant meets the required industrial temperature range of -40°C to +125°C. Ensure compatibility with the 38-lead TSSOP-EP footprint during PCB layout. Cross-reference the datasheet for any recent Product Change Notifications that may affect pinout or electrical characteristics before finalizing procurement.
Selection Notes
Select this component for applications requiring robust bidirectional power flow control up to 100V. The IFE variant is suitable for standard industrial environments operating between -40°C and +125°C. Consider the HFE variant if higher temperature resilience up to 150°C is needed. The independent compensation pins allow tailored loop stability for diverse inductor and capacitor selections across various buck and boost configurations.
Part Context
The LT8228IFE#PBF belongs to the LT8228 family of high-voltage synchronous controllers. This series includes variants like the LT8228EFE and LT8228HFE, which share core functionality but differ in operating temperature ranges. The IFE model specifically targets industrial applications, offering a balance of performance and reliability within the standard commercial-to-industrial temperature spectrum while maintaining the same 100V bidirectional capabilities.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. For equivalent functionality, consider other Analog Devices bidirectional controllers within the same voltage class, ensuring compatibility with the 38-lead TSSOP-EP package and independent compensation requirements.
