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HV9989

Not Recommended for New Designs

Status: Not Recommended for new designs

Features:

  • Three out-of-phase constant-current boost converters
  • Current loop closed with sub-microsecond PWM dimming pulses supports PWM dimming >20kHz
  • Internal 40V linear regulator
  • External clock input
  • External individual reference inputs
  • Individual PWM dimming inputs
  • Programmable slope compensation
  • +0.2A/-0.4A gate drivers
  • Independent short circuit protection with hiccup for each channel
  • Latching output open-circuit protection
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The HV9989 is a three-channel peak current mode PWM controller for driving single switch converters in a constant output current mode. It can be used for driving either RGB LEDs or multiple channels of white LEDs. The HV9989 features proprietary PWM dimming control algorithm achieving a dimming pulse of a few hundred nanoseconds from a continuous-conduction mode (CCM) or discontinuous-conduction mode (DCM) boost converter, while maintaining the instantaneous LED constant current determined by the external reference voltage input. This feature permits dimming frequency outside of the audible range. The feature can also yield a wide dimming ratio in excess of 10,000:1 at low dimming frequency. Each of the three channels features individual PWM dimming and reference voltage inputs. The switching frequencies of the three converters are controlled by an external clock signal, such that the channels operate at a switching frequency of 1/12th the external clock frequency and are positioned 120O out-of-phase to reduce the input current ripple. The HV9989 provides a full protection feature set, including output-short and open-circuit protection, for each individual channel that is independent from the other channels. The HV9989 is powered by a built-in 40V linear regulator.

Additional Features
  • Three out-of-phase constant-current boost converters
  • Current loop closed with sub-microsecond PWM dimming pulses supports PWM dimming >20kHz
  • Internal 40V linear regulator
  • External clock input
  • External individual reference inputs
  • Individual PWM dimming inputs
  • Programmable slope compensation
  • +0.2A/-0.4A gate drivers
  • Independent short circuit protection with hiccup for each channel
  • Latching output open-circuit protection
Parametrics
Name
Value
Topology
Boost, SEPIC
+Vin min (V)
10
+Vin max (V)
40
Output Current
External FET
Dimming
PWM / Linear
Package
QFN-40

Documents

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Data Sheets

06/24/2015
1086KB

Development tools data is currently unavailable.

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
HV9989K6-G
0.104280
0.489796
40
VQFN
6x6x1.0mm
Matte Tin
e3
HV9989K6-G-M935
0.104280
0.299333
40
VQFN
6x6x1.0mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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