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Product Detailed Parameters
- Description：IC REG CTRLR FWRD CONV 38TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Output Type：Transistor Driver
- Function：Step-Up/Step-Down
- Output Configuration：Positive, Isolation Capable
- Topology：Forward Converter
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：6.5V ~ 100V
- Frequency - Switching：100kHz ~ 500kHz
- Duty Cycle (Max)：95%
- Synchronous Rectifier：Yes
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：Enable, Frequency Control, Soft Start
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：38-TFSOP (0.173", 4.40mm Width) 31 Leads, Exposed Pad
- Supplier Device Package：38-TSSOP-EP
- Grade：-
- Qualification：-
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Overview
The LT3752HFE#PBF is a current mode PWM controller optimized for active clamp forward converter topologies, manufactured by Analog Devices Inc. It operates within a switching frequency range of 100 kHz to 500 kHz and supports a single output configuration. The device features an integrated DC/DC housekeeping controller and is guaranteed to function across a junction temperature range of –40°C to 150°C. It is housed in a 38-lead plastic TSSOP package with exposed pad (TSSOP-38) and requires a supply voltage of 10 V with a maximum operating current of 7.5 mA.
Feature Summary
- Optimized for active clamp forward converter topology with integrated housekeeping power supply
- Current mode PWM control architecture for precise regulation
- Extended high-temperature reliability rated up to 150°C junction temperature
Applications
- Active clamp forward power supplies
- Isolated DC/DC conversion systems
- Industrial power management modules
Procurement Notes
Verify the specific suffix #PBF indicates lead-free RoHS compliance and tube packaging when ordering. Confirm the H-grade designation ensures operation up to 150°C junction temperature. Cross-reference the 38-lead TSSOP-EP footprint against PCB layout requirements. Ensure compatibility with the intended switching frequency range of 100 kHz to 500 kHz for the target application design.
Selection Notes
Select this component when an active clamp forward topology is required with integrated auxiliary power generation. The H-grade variant is necessary for applications demanding operation at junction temperatures exceeding 125°C. Compare pinout compatibility with standard TSSOP packages if space constraints exist. Verify that the 10 V supply requirement aligns with available system rails.
Part Context
This part belongs to the LT3752 family of switching controllers designed for high-efficiency isolated converters. The LT3752 series distinguishes itself by including an internal housekeeping regulator, reducing external component count compared to standard PWM controllers. The HFE variant specifically denotes the extended temperature grade within the 38-lead TSSOP package lineup.
Replacement Considerations
LT3752EFE#PBF offers similar functionality but is rated for a lower maximum junction temperature of 125°C. LT3752IFE#PBF provides the same electrical performance as the EFE variant. No direct functional substitutes are documented; verify thermal requirements before substituting with lower-grade variants.
