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Product Detailed Parameters
- Description：IC LED DRVR LINEAR PWM 1.5A 8DFN
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：-
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：40V
- Voltage - Output：-
- Current - Output / Channel：1.5A
- Frequency：-
- Dimming：PWM
- Applications：-
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-VFDFN Exposed Pad
- Supplier Device Package：8-DFN (3x3)
- Grade：-
- Qualification：-
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Overview
The STCS1PUR is a BiCMOS constant current source designed for driving LEDs in low voltage applications. It provides a precise constant current starting from a varying input voltage source, targeting replacement of discrete component solutions. The device supports Boost and Buck topologies with an adjustable output voltage. It features an internal switch and linear PWM dimming capability. The IC operates within a supply voltage range of 4.5 V to 40 V and delivers up to 1.5 A output current per channel. It is housed in an 8-DFN (3x3) package with a bare pad.
Feature Summary
- Provides precise constant current regulation with ±10% precision set by an external resistor
- Supports PWM dimming via a dedicated pin for light control
- Includes an open-drain diagnostic pin to indicate load disconnection conditions
- Integrates internal switching elements for compact LED driver designs
Applications
- LED lighting drivers for 5 V, 12 V, or 24 V systems
- Low voltage LED illumination applications requiring high precision
- Replacement for discrete LED driver component solutions
Procurement Notes
Verify the specific suffix PUR indicates the DFN-8 package configuration and tape-and-reel shipping format. Confirm RoHS compliance status through official datasheets as regulatory requirements may vary by region. Ensure the ordering quantity aligns with standard factory packaging multiples to avoid partial reel handling fees. Cross-reference the manufacturer part number with distributor codes to prevent procurement errors due to naming variations.
Selection Notes
Select this component when designing LED drivers for low voltage inputs such as 5 V, 12 V, or 24 V sources. It is suitable for applications requiring a single-channel constant current output up to 1.5 A. Consider the thermal performance of the 8-DFN package for heat dissipation requirements. Verify that the required dimming functionality can be accommodated by the dedicated PWM pin interface.
Part Context
The STCS1PUR belongs to the STCS1 series of LED lighting driver ICs manufactured by STMicroelectronics. This series focuses on integrating constant current source functions into a small form factor to simplify LED driver circuit design. The device is categorized under PMIC LED drivers and is intended for general lighting applications where space and precision are critical factors.
Replacement Considerations
Check for direct substitutes within the STCS1 family that may offer different package options or temperature ranges. Verify compatibility with existing PCB footprints if replacing with similar devices from other manufacturers. Ensure electrical parameters such as maximum current and input voltage overlap sufficiently for seamless integration.
