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Open-loop LED driver IC with internal 15-V to 450-V linear regulator, linear and PWM dimming capabilities, overtemperature protection, and housed in a SOP8 package

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HV9910CLG-G General Description

The HV9910C is an open loop, current mode, control LED driver IC. The HV9910C can be programmed to operate in either a constant frequency or constant off-time mode. It includes a 15 – 450V linear regulator which allows it to work from a wide range of input voltages without the need for an external low voltage supply. HV9910C includes a TTL compatible PWM dimming input that can accept an external control signal with a duty ratio of 0 – 100% and a frequency of up to a few kilohertz. It also includes a 0 – 250mV linear dimming input which can be used for linear dimming of the LED current. As opposed to the HV9910B, the HV9910C is equipped with built-in thermal-shutdown protection.The HV9910C is ideally suited for buck LED drivers. Since the HV9910C operates in open loop current mode control, the controller achieves good output current regulation without the need for any loop compensation. Also, being an open loop controller, PWM dimming response is limited only by the rate of rise of the inductor current, enabling a very fast rise and fall times of the LED current. The HV9910C requires only three external components (apart from the power stage) to produce a controlled LED current making it an ideal solution for low cost LED drivers.

Microchip Technology, Inc Inventory

Key Features

    • Switch mode controller for single switch LED drivers
    • Enhanced drop-in replacement to the HV9910B
    • Open loop peak current controller
    • Internal 15 to 450V linear regulator
    • Constant frequency or constant off-time operation
    • Linear and PWM dimming capability
    • Requires few external components for operation
    • Over-temperature protection
Microchip Technology, Inc Original Stock


Category Integrated Circuits (ICs)Power Management (PMIC)LED Drivers Mfr Microchip Technology
Series - Package Tape & Reel (TR)Cut Tape (CT)Digi-Reel®
Product Status Active 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 25kHz, 100kHz
Dimming Analog, PWM Applications Backlight, Lighting, Signage
Operating Temperature -40°C ~ 125°C (TJ) Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width) Supplier Device Package 8-SOIC
Base Product Number HV9910 Manufacturer Microchip
Product Category LED Lighting Drivers RoHS Details
Mounting Style SMD/SMT Output Current -
Input Voltage, Min 15 V Input Voltage, Max 450 V
Operating Frequency 100 kHz Output Voltage Adjustable
Minimum Operating Temperature - 40 C Maximum Operating Temperature + 125 C
Features PWM Dimming, Constant Current Brand Microchip Technology
Input Voltage 15 V to 450 V Moisture Sensitive Yes
Number of Channels 1 Channel Pd - Power Dissipation 650 mW
Product Type LED Lighting Drivers Factory Pack Quantity 3300
Subcategory Driver ICs Supply Current - Max 1.5 mA
Unit Weight 0.019048 oz

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Ratings and Reviews

L**n 07/03/2023

Delivery almost 5 days, works

L**s 07/24/2022

Good module, workmanship at height, corresponds to the description! Delivery to the kemerovo region, Novokuznetsk for 23 days. Good seller, definitely recommend!



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