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HV9911

Switch-Mode LED Driver IC w/ High Current Accuracy

Status: In Production

Features:

  • Buck
  • Boost
  • Buck-boost
  •  SEPIC
  • Works with high side current sensing
  • Closed loop control of output current
  • High 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
  • Enable & PWM dimming
  • +0.2A/-0.4A GATE drive
  • Output short circuit protection
  • Output over voltage protection
  • Synchronization capability
  • Programmable MOSFET current limit
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
Add To Cart

Device Overview

Summary

The HV9911 is a current mode control LED driver IC designed to control single switch PWM converters (buck, boost, buck-boost, or SEPIC), in a constant frequency or constant off-time mode. The controller uses a peak current control scheme, (with programmable slope compensation), 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 to each other, or to an external clock, using the SYNC pin. Programmable MOSFET current limit enables current limiting during input under voltage and output overload conditions. The IC also includes a 0.2A source and 0.4A sink GATE driver for high power applications. An internal 9.0 - 250V linear regulator powers the IC, eliminating the need for a separate power supply for the IC. HV9911 provides 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. The IC also provides a FAULT output which, can be used to disconnect the LEDs in case of a fault condition, using an external disconnect FET. The HV9911 based LED driver is ideal for RGB backlight applications with DC inputs. The HV9911 based LED lamp drivers can achieve efficiency in excess of 90% for buck and boost applications.

Additional 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 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
    • Enable & PWM dimming
    • +0.2A/-0.4A GATE drive
    • Output short circuit protection
    • Output over voltage protection
    • Synchronization capability
    • Programmable MOSFET current limit
Parametrics
Name
Value
Topology
Boost, SEPIC, Buck-Boost
+Vin min (V)
9.0
+Vin max (V)
250
Output Current
External FET
Dimming
PWM / Linear
Package
SOIC-16
Product Type
Off Line
lq Typ
1mA
Θja (C/W)
82

Documents

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Software Library

Development Environment

  • Demo & Evaluation Boards
  • Software Libraries
Demo & Evaluation Boards
HV9911DB1 Demo Board
HV9911DB1 Demo Board ( HV9911DB1 )
(Not Recommended for new design)

The HV9911DB1 is an LED driver capable of driving up to 20 one-watt LEDs in series from an input of 21 - 27VDC. The demoboard uses HV9911 in a boost topology. The converter has a very good initial regulation (+/-5%) and excellent line and load regulation over the entire input and output voltage range (<+/- 1%). The full load efficiency of the converter is typically greater than 90%.  The...

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HV9911DB2
HV9911DB2 ( HV9911DB2 )

The HV9911DB2 is an LED driver capable of driving up to twenty 100mA LEDs in series from an input of 9 - 16V DC. The demoboard uses Supertex’s HV9911 IC in a boost topology. The converter has a very good initial regulation, (+/-5%), and excellent line and load regulation over the entire input and output voltage range (<+/- 1%). The full load efficiency of the converter is typically...

Learn More
Add To Cart
HV9911DB3 Demo Board
HV9911DB3 Demo Board ( HV9911DB3 )

The HV9911DB3 is an LED driver capable of driving up to 25 one-watt LEDs in series from an input of 130 - 200VDC. The demoboard uses HV9911 in a buck topology with the HV7800 used for high side current sensing. The converter has a very good initial regulation (+/-5%) and excellent line and load regulation over the entire input and output voltage range (<+/-2%). The full load...

Learn More
Add To Cart
HV9911DB4 Demo Board
HV9911DB4 Demo Board ( HV9911DB4 )
(Not Recommended for new design)

The HV9911DB4 is an LED driver dempboard capable of driving one to six three-watt LEDs in series from an input of 9.0 - 16VDC. The demoboard uses HV9911 in a SEPIC topology to drive LED string voltages higher or lower than the input voltage. The converter has a very good initial regulation (+/-5%), and excellent line and load regulation over the entire input and...

Learn More
Software Libraries
Analog Simulation - HV9911

The HV9911 is a current mode control LED driver IC designed to control single switch PWM converters (buck, boost, buck-boost, or SEPIC), in a constant frequency or constant off-time mode. The...

Learn More

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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
HV9911NG-G
0.157400
0.311111
16
SOIC
.150in
Matte Tin
e3
HV9911NG-G-M901
0.157400
0.307692
16
SOIC
.150in
Matte Tin
e3
HV9911NG-G-M934
0.157400
0.307692
16
SOIC
.150in
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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