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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 LT8303IS5#TRMPBF is a high voltage DC-DC switching regulator IC manufactured by Analog Devices Inc. It utilizes a flyback topology to provide isolated output voltages. The device supports an input voltage range from 2.7V to 42V and delivers a maximum switch current of 450mA. It operates with a fixed switching frequency of 106kHz and features adjustable output voltage control. The component is housed in a TSOT-23-5 package and is rated for operation within a temperature range of -40°C to +125°C.
Feature Summary
- Provides galvanic isolation suitable for generating positive or negative output voltages
- Integrates a high-voltage power switch capable of handling up to 42V input
- Features adjustable output voltage regulation via external feedback components
Applications
- Isolated power supply generation for industrial sensor interfaces
- Bias voltage creation for optocouplers or gate drivers
- Powering isolated communication channels in data acquisition systems
Procurement Notes
Verify the specific suffix TRMPBF against official Analog Devices documentation to confirm the tape and reel packaging configuration and industrial temperature grade. Ensure the ordering part number matches the exact pinout and thermal characteristics required for your PCB layout. Cross-reference the datasheet revision date to validate all electrical specifications prior to finalizing procurement orders.
Selection Notes
Select this component when a compact, isolated flyback converter is required for low-power applications. It is appropriate for designs needing a single inductor solution with integrated high-side drive. Consider the 450mA switch current limit and 106kHz frequency when designing the transformer and output filter components to meet efficiency and ripple requirements.
Part Context
This part belongs to the LT8303 family of high voltage flyback converters. It shares architectural similarities with other members like the LT8300 and LT8301 but offers specific current ratings and input voltage ranges tailored for mid-range isolated power needs. The IS5 designation indicates the industrial temperature grade variant within the TSOT-23-5 package lineup.
Replacement Considerations
LT8303ES5#TRMPBF: Lower temperature grade variant (Extended). LT8303HS5#TRMPBF: Higher temperature grade variant (Military/Industrial). Verify thermal performance and operating temperature limits before substituting.
