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Product Detailed Parameters
- Description：IC LED DRIVER OFFL 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)：No
- Number of Outputs：1
- Voltage - Supply (Min)：-
- Voltage - Supply (Max)：7V
- Voltage - Output：-
- Current - Output / Channel：-
- 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 FT8870-RT is an AC-DC offline switcher LED driver IC manufactured by Fremont Micro Devices Ltd. It utilizes a step-down (buck) topology to regulate current for backlight applications. The device features an internal switch and supports dimming functionality. Key electrical parameters include a supply voltage range of 5.3V to 8V, a maximum output current of 140mA per channel, and an operating frequency of 5kHz. It is designed for surface mount installation in an 8-SOP package with a width of 3.90mm.
Feature Summary
- Integrates AC-DC offline switching capability with buck topology for efficient power conversion
- Includes internal power switch to reduce external component count
- Supports dimming control for adjustable LED brightness
- Designed specifically for backlight application requirements
Applications
- LED backlighting systems
- Power management circuits requiring AC-DC offline conversion
- Consumer electronics display illumination
Procurement Notes
Verify the specific ordering suffix, such as -RT, which indicates tape and reel packaging configuration. Confirm that the part status is treated as discontinued based on available records from late 2025. Ensure compatibility with 8-SOP footprint dimensions during PCB layout review. Cross-reference manufacturer part numbers against distributor listings to confirm authenticity and revision history before finalizing procurement orders.
Selection Notes
Select this component when designing low-power backlight drivers requiring integrated AC-DC offline switching. The 140mA output current limit suits small LED arrays. The 5kHz operating frequency allows for compact passive components. Ensure the design accommodates the -40°C to 125°C ambient temperature range. Verify that the 8V maximum supply voltage aligns with the system's power rail constraints.
Part Context
The FT8870 belongs to the FT88xx series of LED drivers from Fremont Micro Devices Ltd. This family focuses on non-volatile memory and power management solutions. The FT8870-RT variant specifically denotes the reel-packaged version of the standard FT8870 IC. It shares architectural similarities with other devices in the lineup but is optimized for single-channel backlight driving tasks.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation. Due to the discontinued status, direct replacements may require evaluating alternative manufacturers' AC-DC LED driver ICs with similar buck topology and 8-SOP packaging constraints.
