AT9933LG-GVAO
ActiveHYSTERETIC BOOST-BUCK (CUK) LED DRIVER IC
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AT9933LG-GVAO
ActiveHYSTERETIC BOOST-BUCK (CUK) LED DRIVER IC
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Technical Specifications
Parameters and characteristics for this part
| Specification | AT9933LG-GVAO |
|---|---|
| Applications | Lighting |
| Dimming | PWM |
| Grade | Automotive |
| Internal Switch(s) | False |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 8-SOIC |
| Package / Case [x] | 0.154 in |
| Package / Case [y] | 3.9 mm |
| Qualification | AEC-Q100 |
| Supplier Device Package | 8-SOIC |
| Topology | Step-Down (Buck), Step-Up (Boost) |
| Type | DC DC Controller |
| Voltage - Supply (Max) [Max] | 75 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Microchip Direct | T/R | 1 | $ 1.67 | |
| 25 | $ 1.39 | |||
| 100 | $ 1.27 | |||
| 1000 | $ 1.24 | |||
| 5000 | $ 1.22 | |||
Description
General part information
AT9933 Series
The AT9933 is a variable frequency PWM controller IC, designed to control an LED lamp driver using a low-noise boost-buck (Ćuk) topology. The AT9933 uses patent-pending hysteretic current-mode control to regulate both the input and the output currents. This enables superior input surge immunity without the necessity for complex loop compensation. Input current control enables current limiting during startup, input under-voltage and output overload conditions. The AT9933 provides a low-frequency PWM dimming input that can accept an external control signal with a duty cycle of 0 - 100% and a high dimming ratio.
The AT9933 based LED driver is ideal for automotive LED lamps. The part is rated for up to 125°C ambient temperatures and is AEC-Q100 compliant.
Documents
Technical documentation and resources
