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HV9861A

LED Driver w/ Average-Mode Constant Current Control

Status: In Production

Features:

  • Fast average current control
  • Programmable constant off-time switching
  • PWM / linear dimming input
  • Output short circuit protection with skip mode
  • Ambient operating temperature -40°C to +125°C
  • Pin-compatible with the HV9910B and HV9961
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The HV9861A is a patented, average-mode, constant current control LED driver IC operating in a constant off-time mode. Unlike the HV9910B, this control IC does not produce a peak-to-average error, and therefore greatly improves the accuracy, line and load regulation of the LED current without any need for loop compensation or high-side current sensing. The output LED current accuracy is ±3%. The IC is equipped with a current limit comparator for hiccup-mode output short circuit protection. Internal over-temperature protection is provided. The internally regulated voltage (VDD) for the HV9861A is 7.5V. The IC can be powered from a 15 - 450V supply. A PWM dimming input is provided that accepts an external control TTL-compatible signal. The output current can be programmed by an internal 270mV reference, or controlled externally through a 0 - 1.5V dimming input. The IC is pin-to-pin compatible with the HV9910B and HV9961, and can be used as a drop-in replacement for many applications to improve the LED current accuracy and regulation.

Additional Features
    • Fast average current control
    • Programmable constant off-time switching
    • PWM / linear dimming input
    • Output short circuit protection with skip mode
    • Ambient operating temperature -40°C to +125°C
    • Pin-compatible with the HV9910B and HV9961
Parametrics
Name
Value
Topology
Buck
+Vin min (V)
8
+Vin max (V)
450
Output Current
External FET
Dimming
PWM / Linear
Package
SOIC-8, SOIC-16
Product Type
Off Line
Type
Average-Mode
Operating Iq (µA)
0.5
ILED Accuracy
±3%
Θja (C/W)
101, 83

Documents

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Software Library

User Guides

Development Environment

  • Demo & Evaluation Boards
  • Software Libraries
Demo & Evaluation Boards
HV9861ADB1 Demo Board
HV9861ADB1 Demo Board ( HV9861ADB1 )

The HV9861ADB1 demoboard is a high-brightness LED driver employing the patented average-mode, constant current control scheme. The power conversion stage of the HV9861ADB1 consists of a diode bridge rectifier followed by a buck converter operating with fixed off-time of 20μs.  The HV9861ADB1 LED driver features tight regulation of the LED current within a few milliamps over the entire...

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HV9861ADB2 Demo Board
HV9861ADB2 Demo Board ( HV9861ADB2 )

Boost Assisted, Valley Fill, 120VAC Input, 7W Output, 350mA, 20V, Power Factor ~ 93% demo board.

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Software Libraries
Analog Simulation - HV9861A

The HV9861A is a patented, average-mode, constant current control LED
driver IC operating in a constant off-time mode. Unlike the HV9910B,
this control IC does not produce a...

Learn More

Similar Devices

Product
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+Vin min (V)
+Vin max (V)
Price 5K
Buck
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Buck
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Buck
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Buck
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Buck
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Cuk
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Buck
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Linear
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Linear
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Linear
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Linear
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3
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Linear
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Linear
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Buck
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Buck
6
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Buck
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Buck
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Buck
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Boost
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Boost
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Boost
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Linear
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Linear
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Linear
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Linear
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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
HV9861ALG-G
0.078000
0.230303
8
SOIC
.150In(3.90mm)
Matte Tin
e3
HV9861ANG-G
0.157400
0.311111
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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