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Product Detailed Parameters
- Description：IC REG FLYBCK ADJ 450MA TSOT23-5
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Up/Step-Down
- Output Configuration：Positive, Isolation Capable
- Topology：Flyback
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：5.5V
- Voltage - Input (Max)：100V
- Voltage - Output (Min/Fixed)：-
- Voltage - Output (Max)：-
- Current - Output：450mA
- Frequency - Switching：7kHz ~ 350kHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：SOT-23-5 Thin, TSOT-23-5
- Supplier Device Package：TSOT-23-5
- Grade：-
- Qualification：-
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Overview
The LT8303ES5#TRMPBF is a flyback DC-DC converter from Analog Devices Inc., housed in a TSOT-23-5 package. It supports an input voltage range of 4V to 42V and delivers up to 450mA output current. The device operates with a fixed switching frequency of 100kHz and features adjustable output voltage. It includes integrated soft-start, cycle-by-cycle current limit, and thermal shutdown protection. The component functions within a temperature range of -40°C to +125°C junction temperature.
Feature Summary
- Integrated high-voltage switch for compact isolated power solutions
- Fixed-frequency operation simplifies external component selection
- Built-in protection mechanisms including thermal shutdown and current limiting
Applications
- Industrial control systems requiring isolated power rails
- Battery-powered equipment needing efficient step-down conversion
- General-purpose isolated DC/DC power supply designs
Procurement Notes
Verify the specific suffix #TRMPBF against official Analog Devices documentation to confirm tape-and-reel packaging and temperature grade. Cross-reference the manufacturer part number with authorized distributor catalogs to ensure authenticity and traceability. Confirm RoHS compliance status through the latest datasheet revision notes prior to procurement.
Selection Notes
Select this component when a small form factor is required for isolated flyback applications. Ensure the input voltage does not exceed the 42V maximum rating. Verify that the required output current remains within the 450mA limit. Consider the 100kHz switching frequency for EMI constraints and filter design requirements.
Part Context
This part belongs to the LT8303 family of flyback converters designed for space-constrained applications. It integrates the controller and power switch into a single TSOT-23-5 package. The series targets low-to-medium power isolated supplies where board area is a critical constraint.
Replacement Considerations
LT8303ES5#TRPBF: Same electrical specifications but differs in packaging format (tray vs. reel). LT8303IS5#TRMPBF: Industrial temperature grade variant; verify if extended operating range is required.
