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Product Detailed Parameters
- Description：SWITCHING VOLTAGE REGULATORS 100
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- 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#TRPBF is a 100V bidirectional synchronous buck/boost controller from Analog Devices. It supports constant-current or constant-voltage regulation with automatic or external power flow control. The device operates within a 6V to 100V input/output range and features an independent compensation network for each mode. Key specifications include a programmable switching frequency of 80kHz to 600kHz, ±1.0% feedback voltage accuracy, and -40°C to +125°C operating temperature. It integrates reverse supply, reverse current, and fault protection mechanisms.
Feature Summary
- Bidirectional energy management with automatic or controlled power flow direction
- Independent compensation networks for optimized transient response in buck and boost modes
- Comprehensive protection including negative voltage, short circuit, and surge current limiting
- Masterless fault-tolerant load sharing for 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 availability status as the component may be subject to limited supply or factory special orders. Confirm that the #TRPBF suffix indicates tape and reel packaging suitable for automated assembly. Ensure compatibility with the required thermal management solutions for the TSSOP-38 package. Cross-reference the specific revision level against the latest product change notifications to guarantee design continuity.
Selection Notes
Select this controller for applications requiring wide input voltage ranges up to 100V and precise bidirectional power control. The LT8228IFE variant is suited for industrial environments with a -40°C to +125°C operating range. Consider the independent compensation feature if distinct tuning for buck and boost modes is necessary. Evaluate the need for masterless load sharing if multiple units must operate in parallel to increase current capacity.
Part Context
This part belongs to the LT8228 family, which includes variants like LT8228EFE and LT8228HFE. These models share core functionality but differ in operating temperature ranges and packaging options. The LT8228IFE specifically targets industrial applications with standard temperature ratings. It serves as a key component in modern power management architectures demanding high efficiency and robust protection.
Replacement Considerations
LT8228EFE#TRPBF
FAQ
How does the LT8228 handle power flow direction?
The device can automatically determine the power flow direction based on voltage levels or allow external control signals to dictate the direction.
What protection features are integrated into the LT8228?
It includes reverse supply protection, reverse current protection, negative voltage protection, short-circuit detection, and bidirectional surge current limiting.
