The LM34923 Step Down Switching Regulator features all of the functions needed to implement a low cost, efficient Buck bias regulator. This high voltage regulator contains an 80V N-Channel MOSFET Switch and a startup regulator. The device is easy to implement and is provided in an 10-pin VSSOP package. The regulator’s control scheme uses an on-time inversely proportional to VIN. This feature results in the operating frequency remaining relatively constant with line and load variations. The control scheme requires no loop compensation, resulting in fast transient response. An intelligent current limit is implemented with a forced off-time which is inversely proportional to VOUT. This scheme ensures short circuit control while providing minimum foldback. Other features include: Thermal Shutdown, VCC Under Voltage Lock-out, Max Duty Cycle Limiter, a Pre-charge Switch, and a programmable Under Voltage Detector with a status flag output.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LM34923 80V, 600 mA Constant On-Time Buck Switching Regulator datasheet (Rev. A) | 20 Feb 2013 | |
| User guide | AN-2050 LM5006 Evaluation Board (Rev. A) | 25 Apr 2013 | ||
| User guide | AN-2147 LM34923 Evaluation Board (Rev. A) | 25 Apr 2013 | ||
| Application note | AN-2171 Designing Constant-On-Time Buck Regulators for Low Drop-Out Voltage (Rev. A) | 23 Apr 2013 |
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VSSOP (DGS) | 10 | Ultra Librarian |
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