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HV9911 Datasheet Switch-mode Led Driver

Manufacturer: Microchip Technology

Overview: HV9911 Switch-Mode LED Driver IC with High Current Accuracy.

General Description

The HV9911 is an LED driver IC designed to control single-switch PWM converters (buck, boost, buck-boost and SEPIC) in a Constant Frequency or Constant Off-time mode.

The controller uses a peak current control scheme with programmable slope pensation and includes an internal transconductance amplifier to control the output current in closed loop, enabling high output current accuracy.

In the Constant Frequency mode, multiple HV9911s can be synchronized with each other or with an external clock using the sync pin.

Key Features

  • Switch-mode Controller for Single-switch Drivers: - Buck - Boost - Buck-boost - SEPIC.
  • Works with High-side Current Sensing.
  • Closed-loop Control of Output Current.
  • High Pulse-Width Modulation (PWM) Dimming Ratio.
  • Internal 250V Linear Regulator (can be extended using external Zener Diodes).
  • Internal 2% Voltage Reference (0°C < TA < 85°C).
  • Constant Frequency or Constant Off-time Operation.
  • Programmable Slope Compensation.

Similar Datasheet

Brand Logo Part Number Description Manufacturer
Supertex Logo HV9911 Switch-Mode LED Driver IC Supertex

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HV9911 Distributor