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HV9921N3

IC LED Driver AC DC Offline Switcher Triac Dimming 20mA Lighting TO-92-3

Product Category: LED Drivers & Power Supply
Mfr. Part #
HV9921N3
Package: TO92
Lead Free Status /RoHS Status:
Data Sheet: HV9921N3 Datasheet
Inventory: In Stock

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Mfr. Part #: HV9921N3

Product Details

Product Details

General Description

The HV9911 is a current mode control LED driver IC designed to control single switch PWM converters (buck, boost or buck-boost), 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 case of buck and buck-boost converters, the high side output current can be sensed by using the HV7800).

Features

Switch mode controller for single switch drivers
o Buck
o Boost
o Buck-boost
Works with high side current sensing
Closed loop control of output current
High PWM dimming ratio
Internal 9 to 250V linear regulator (can be extended using external zener diodes)
Internal 2% Voltage Reference (-40Â°C Constant frequency or constant off-time operation
Programmable slope compensation
Enable & PWM dimming
+0.25A/-0.5A gate drive (VDD = 10V)
Output short circuit protection
Output over voltage protection
Synchronization capability
Programmable MOSFET current limit
Soft start

Applications

RGB backlight applications
Automotive LED driver application
Battery Powered LED lamps
Other DC/DC LED drivers

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Please send inquiry, we will respond immediately.

Mfr. Part #: HV9921N3