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HV9925

Programmable-Current LED Lamp Driver w/PWM Dimming

Status: In Production

Features:

  • Programmable output current to 50mA
  • PWM dimming / enable
  • Universal 85 - 264VAC operation
  • Fixed off-time buck converter
  • Internal 475V power MOSFET
  • Over-temperature protection with hysteresis
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The HV9925 is a pulse width modulated (PWM) high-efficiency LED driver control IC with PWM dimming capabilities. It allows efficient operation of high brightness LED strings from voltage sources ranging up to 400VDC. The HV9925 includes an internal high-voltage switching MOSFET controlled with a fixed off-time (TOFF) of approximately 10.5µs. The LED string is driven at constant current, thus providing constant light output and enhanced reliability. Selecting a value of a current sense resistor can externally program the output LED current of the HV9925. The peak current control scheme provides good regulation of the output current throughout the universal AC line voltage range of 85 to 264VAC or DC input voltage of 20 to 400V. The HV9925 is designed with a built in thermal shutdown to prevent excessive power dissipation in the IC.

Additional Features
  • Programmable output current to 50mA
  • PWM dimming / enable
  • Universal 85 - 264VAC operation
  • Fixed off-time buck converter
  • Internal 475V power MOSFET
  • Over-temperature protection with hysteresis
Parametrics
Name
Value
Topology
Buck
+Vin min (V)
20
+Vin max (V)
400
Output Current
20 - 50mA
Dimming
PWM
Package
SOIC-8 w/HS

Documents

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Software Library

User Guides

Development Environment

  • Demo & Evaluation Boards
  • Software Libraries
Demo & Evaluation Boards
HV9925DB1 Demo Board
HV9925DB1 Demo Board ( HV9925DB1 )

The HV9925DB1 demo board is a complete LED power driver to supply a string of LEDs using the HV9925, an integrated, high-voltage, buck regulator IC featuring programmable output current and PWM dimming. The HV9925 includes a 500V switching MOSFET and can operate directly from rectified AC line voltages of 80 to 135VAC.

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Software Libraries
Analog Simulation - HV9925

The HV9925 is a pulse width modulated (PWM) high-efficiency LED driver control IC with PWM dimming capabilities. It allows efficient operation of high brightness LED strings from voltage sources...

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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
HV9925SG-G
0.078000
0.206061
8
SOIC
3.90mm(.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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