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Product Detailed Parameters
- Description：IC LED DRIVER OFFL 140MA 8SOP
- Series：-
- Mfr：Fremont Micro Devices Ltd
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：AC DC Offline Switcher
- Topology：Step-Down (Buck)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：5.3V
- Voltage - Supply (Max)：8V
- Voltage - Output：-
- Current - Output / Channel：140mA
- Frequency：5kHz
- Dimming：-
- Applications：Backlight
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOP
- Grade：-
- Qualification：-
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Overview
The FT8870S-RT is an AC/DC offline switcher LED driver IC manufactured by Fremont Micro Devices Ltd. It features a step-down (buck) topology with an internal switch, designed for single-output applications delivering up to 140mA. The device operates within a supply voltage range of 5.3V to 8V and supports a switching frequency of 5kHz. Packaged in an 8-SOP surface-mount case, it functions reliably across a temperature range of -40°C to 125°C.
Feature Summary
- Integrates an internal power switch for simplified circuit design
- Utilizes buck topology for efficient AC/DC offline conversion
- Supports dimming functionality for backlight control
Applications
- LED backlighting systems
Procurement Notes
Verify component status as the FT8870S-RT is listed as obsolete or discontinued by the manufacturer. Confirm availability through secondary market distributors if immediate procurement is required. Ensure compatibility with existing 8-SOP footprints during replacement planning. Check RoHS compliance status for regulatory adherence in specific regions.
Selection Notes
Select this component for low-power backlight applications requiring a single output channel. The integrated switch reduces external component count compared to non-integrated alternatives. Consider the 140mA current limit when sizing LED arrays. The wide operating temperature range suits industrial or automotive environments where thermal stability is critical.
Part Context
This part belongs to the FT8870 series from Fremont Micro Devices Ltd, focusing on power management solutions. The 'S' suffix typically denotes the SOP package variant, distinguishing it from DIP versions like the FT8870. The series targets cost-effective LED driving solutions for consumer electronics and lighting fixtures.
Replacement Considerations
Direct substitutes include the FT8870-RT, which shares similar packaging and core functionality but may differ in current ratings or pinout specifics. Verify electrical parameters against the original design requirements before substitution.
