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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：2A
- Frequency - Switching：250kHz ~ 1.5MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°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 LT8494EFE#PBF is a monolithic switching regulator manufactured by Analog Devices Inc., housed in a 20-pin TSSOP-EP package. It supports SEPIC, boost, and flyback topologies with an input voltage range of 1V to 32V and an adjustable output voltage from 1.202V to 70V. The device delivers up to 2A output current with a switch rating of 70V. Key electrical parameters include a quiescent current of less than 7uA during operation and 3uA for working power supply current. The internal switch operates at a frequency of 1.5MHz, which is adjustable between 250kHz and 1.5MHz. It functions within a temperature range of -40°C to +125°C.
Feature Summary
- Configurable as SEPIC, boost, or flyback converter
- Adjustable switching frequency from 250kHz to 1.5MHz
- Low quiescent current consumption
- Integrated 70V rated switch
Applications
- Automotive systems
- Industrial power supplies
- Battery-powered equipment
Procurement Notes
Verify the specific suffix '#PBF' indicates lead-free tape and tube packaging when ordering. Confirm the 'EFE' designation corresponds to the 20-pin TSSOP-EP package variant. Ensure compatibility with automotive grade requirements if applicable, as datasheets may list specific automotive certifications. Cross-reference the manufacturer part number with official Analog Devices documentation to confirm availability status and revision level before finalizing procurement.
Selection Notes
Select this component for designs requiring wide input voltage ranges and flexible topology options including SEPIC. Consider the 2A output capability and 70V switch rating for high-voltage step-up applications. Evaluate the thermal performance within the TSSOP-EP package for the intended power dissipation. Verify that the required switching frequency falls within the 250kHz to 1.5MHz adjustable range to meet EMI and size constraints.
Part Context
This part belongs to the LT8494 family of wide input and output range DC/DC converters. It is designed for applications needing efficient power conversion across varying input conditions. The device integrates high-side and low-side drivers along with a bootstrap capacitor, reducing external component count compared to discrete solutions.
Replacement Considerations
LT8494IFE#PBF shares the same core functionality but differs in package type (TSSOP instead of TSSOP-EP). LT8494EFE#TRPBF offers identical electrical specifications but utilizes tape and reel packaging instead of tubes.
