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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 8DFN
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Controller
- Topology：Step-Down (Buck)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：40V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：2MHz
- Dimming：Analog, PWM
- Applications：Lighting, Signage
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-WDFN Exposed Pad
- Supplier Device Package：8-DFN (3x3)
- Grade：-
- Qualification：-
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Overview
The HV9919BK7-G is a high brightness LED driver IC from Microchip Technology, utilizing a buck topology with high-side current sensing. It operates within an input voltage range of 4.5 V to 40 V and supports PWM dimming for constant current control. The device features adjustable output voltage and functions at a switching frequency of 2 MHz. It is housed in an 8-lead DFN package and rated for operation between -40°C and +125°C.
Feature Summary
- High-side current sensing architecture for accurate regulation
- Integrated PWM dimming capability for brightness control
- Buck converter topology optimized for high brightness LEDs
Applications
- High brightness LED lighting systems
- General illumination applications requiring constant current drive
- Automotive exterior lighting modules
Procurement Notes
Verify the specific suffix BK7-G against official Microchip documentation to confirm packaging and tape-and-reel specifications. Ensure compatibility with the required DFN-8 footprint and thermal management requirements. Cross-reference RoHS compliance status directly with the manufacturer's latest datasheet before procurement.
Selection Notes
Select this component when a single-channel buck LED driver with high-side sensing is required. It is suitable for designs needing a wide input voltage range up to 40 V. Consider the 2 MHz switching frequency for compact passive component sizing. Verify that the 8 mA high-side and 30 mA low-side output currents meet the specific gate drive or sensing needs of the external MOSFET.
Part Context
This part belongs to the HV9919B series of LED drivers. It is distinct from other series members like the HV9967 by its specific input voltage range and current sensing configuration. The BK7-G designation indicates the specific package variant and reel quantity provided by the manufacturer.
Replacement Considerations
Direct substitutes are not explicitly confirmed in public data. Evaluate alternatives based on matching buck topology, 40 V max input, and DFN-8 package constraints. Verify pinout compatibility and thermal performance before substitution.
