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Product Detailed Parameters
- Description：IC REG BST CHRG PUMP ADJ 20TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Up, Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Boost, Charge Pump, Flyback, SEPIC
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：1V
- Voltage - Input (Max)：60V
- Voltage - Output (Min/Fixed)：1.202V
- Voltage - Output (Max)：70V (Switch)
- Current - Output：2.1A (Switch)
- Frequency - Switching：250kHz ~ 1MHz
- Synchronous Rectifier：Both
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：20-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：20-TSSOP-EP
- Grade：-
- Qualification：-
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Overview
The LT8495HFE#PBF is a monolithic switching regulator featuring an adjustable frequency range from 250kHz to 1.5MHz, integrated power-on reset, and a watchdog timer. It supports multiple topologies including Boost, SEPIC, and Flyback configurations. The device accommodates wide input voltage ranges, such as 16V to 32V for Boost applications or 5V to 60V for SEPIC/Flyback variants. Output capabilities vary by topology, supporting up to 48V at 0.5A in Boost mode, 300V at 2mA in Flyback mode, or 5V at 1A in SEPIC mode.
Feature Summary
- Integrates power-on reset and watchdog timer functions for system reliability
- Supports configurable switching frequencies between 250kHz and 1.5MHz
- Enables versatile DC-DC conversion via Boost, SEPIC, and Flyback topologies
Applications
- High-voltage boost converter designs requiring 48V output
- Wide-input SEPIC converters for variable source voltages
- Low-power flyback converters generating high output voltages
Procurement Notes
Verify the specific suffix and package type against the manufacturer's current datasheet to ensure compatibility with design requirements. Confirm that the HFE variant matches the intended thermal and electrical specifications for the target application environment before finalizing procurement.
Selection Notes
Select this component when a single IC must support multiple converter topologies with integrated safety features. The adjustable frequency allows optimization for external component size versus efficiency. Ensure the chosen topology aligns with the required input and output voltage ranges specified in the official documentation.
Part Context
This part belongs to the LT8495 family of monolithic switching regulators designed for flexible power management solutions. The HFE suffix typically denotes a specific temperature grade or package variation within the Analog Devices portfolio, distinct from other variants like the EFE or IFE which may share core functionality but differ in environmental ratings or packaging.
Replacement Considerations
Direct substitutes include other LT8495 variants such as LT8494EFE or LT8495EFE, provided the pinout and electrical characteristics match the specific application requirements. Verify compatibility regarding operating temperature range and package dimensions before substitution.
