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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 16SOIC
- Series：-
- Mfr：Microchip Technology
- Package：Tube
- Type：DC DC Controller
- Topology：Step-Down (Buck)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：15V
- Voltage - Supply (Max)：450V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：-
- Dimming：Analog, PWM
- Applications：Backlight, Lighting, Signage
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：16-SOIC
- Grade：-
- Qualification：-
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Overview
The HV9861ANG-G is a single-segment LED driver IC from Microchip Technology, housed in a 16-pin SOIC package. It operates as a buck converter with an input voltage range of 12 V to 450 V and delivers a constant output current of 165 mA. The device functions at a switching frequency of 100 kHz and supports adjustable output voltages. It is rated for operation between -40 °C and +125 °C.
Feature Summary
- Patented average-mode constant current control operating in constant off-time mode
- Eliminates peak-to-average error for improved LED current accuracy
- Enhances line and load regulation without requiring loop compensation
- Removes the need for high-side current sensing components
Applications
- LED lighting systems requiring precise current regulation
- General illumination applications utilizing buck topology
- Industrial or commercial lighting fixtures with wide input voltage ranges
Procurement Notes
Verify component authenticity through authorized Microchip distributors. Confirm the specific suffix 'G' indicates RoHS compliance. Check for end-of-life status as the product may be obsolete. Ensure the 16-pin SOIC package matches your PCB footprint requirements before ordering.
Selection Notes
Select this part for applications needing high-voltage buck conversion with simplified control loops. The absence of high-side sensing reduces bill of materials cost. Verify that the 165 mA output current meets the LED string requirements. Ensure the operating temperature range suits the final enclosure environment.
Part Context
This component belongs to the HV9861A series of average-mode LED drivers. It shares functional similarities with other Microchip LED controllers but offers distinct advantages in regulation accuracy by avoiding peak-current mode errors. The series targets high-efficiency lighting designs where thermal management and component count are critical constraints.
Replacement Considerations
The HV9861ALG-G is a documented alternative within the same family, offering identical functionality in an 8-pin SOIC tape-and-reel package. Verify pin compatibility and thermal performance when substituting due to the different package size.
