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Technical Specifications
Parameters and characteristics for this part
| Specification | HV9921N3-G |
|---|---|
| Applications | Lighting |
| Current - Output / Channel [custom] | 20 mA |
| Dimming | TRIAC |
| Internal Switch(s) | True |
| Mounting Type | Through Hole |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | TO-226-3, TO-92-3 |
| Supplier Device Package | TO-92-3 |
| Topology | Step-Down (Buck) |
| Type | AC DC Offline Switcher |
| Voltage - Supply (Max) [Max] | 400 V |
| Voltage - Supply (Min) [Min] | 20 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Bag | 1 | $ 0.87 | |
| 25 | $ 0.72 | |||
| 100 | $ 0.64 | |||
| Microchip Direct | BAG | 1 | $ 0.87 | |
| 25 | $ 0.72 | |||
| 100 | $ 0.64 | |||
| 1000 | $ 0.63 | |||
| 5000 | $ 0.61 | |||
Description
General part information
HV9921 Series
The HV9921 is a pulse width modulated (PWM) high-efficiency LED driver control IC. It allows efficient operation of LED strings from voltage sources ranging up to 400VDC. The HV9921 includes an internal high voltage switching MOSFET controlled with fixed off-time (TOFF) of approximately 10.5μs. The LED string is driven at constant current, thus providing constant light output and enhanced reliability. The output current is internally fixed at 20mA for HV9921. The peak current control scheme provides good regulation of the output current throughout the universal AC line voltage range of 85 to 265VAC or DC input voltage of 20 to 400V.
Documents
Technical documentation and resources