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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 8SOIC
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Controller
- Topology：Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：-
- Voltage - Supply (Max)：75V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：-
- Dimming：PWM
- Applications：-
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The AT9933LG-G is a hysteretic Boost-Buck (Cuk) topology LED driver IC manufactured by Microchip Technology. It operates within an input voltage range of 8 V to 200 V and delivers a constant output current of 350 mA. The device functions at a switching frequency of 300 kHz with adjustable output voltage capabilities. It supports PWM dimming and is housed in an SOIC-8 package, rated for operation between -40°C and +85°C.
Feature Summary
- Implements hysteretic Boost-Buck (Cuk) topology for versatile LED drive configurations
- Provides constant current regulation with integrated PWM dimming control
- Designed for automotive applications with robust operating specifications
Applications
- Automotive LED lighting systems
- High-brightness LED drivers requiring boost-buck capability
- Industrial LED illumination circuits
Procurement Notes
Verify the specific suffix 'LG-G' against the official Microchip datasheet to confirm pinout and thermal characteristics. Ensure compatibility with the required SOIC-8 footprint and validate that the 350 mA output current meets the target LED string requirements before procurement.
Selection Notes
Select this component when a single-channel driver supporting both step-up and step-down operations is required. The hysteretic control method simplifies external component selection compared to fixed-frequency controllers. Confirm that the 8 V to 200 V input range aligns with the system power supply architecture.
Part Context
This part belongs to the AT9933 family of hysteretic LED drivers from Microchip Technology. It shares functional similarities with the HV9930 series but is distinct in its specific packaging and automotive qualification status. The device is designed to replace older Supertex designs under the Microchip portfolio.
Replacement Considerations
The HV9930LG-G is a documented alternative within the same technology family. Verify pin-to-pin compatibility and ensure the replacement meets the specific automotive grade requirements if applicable.
