Texas Instruments LM34930
The LM34930 constant On-Time Step Down Switching Regulator features all the functions needed to implement a low cost, efficient, buck bias regulator capable of supplying in excess of 1A load current. This high voltage regulator contains an N-Channel Buck Switch, and is available in a DSBGA bumped package. The constant on-time regulation principle requires no loop compensation, results in fast load transient response, and simplifies circuit implementation.| Part No. | LM34930 |
|---|---|
| Datasheet | LM34930 Download |
| Manufacturer |  Texas Instruments |
| Description | 1A Constant On-Time Buck Switching Regulator |
| Buy | Stock & Price |
FEATURES
1●2 Operating Input Voltage Range: 8V to 33V
● Input Over-Voltage Shutdown at 36V
● Input Absolute Maximum Rating of 44V
● Integrated 1A N-Channel Buck Switch
● Adjustable Output Voltage From 2.5V
● Switching Frequency Adjustable to 2 MHz
● Switching Frequency Remains Nearly Constant With Load Current and Input Voltage
● Ultra-Fast Transient Response
● No Loop Compensation Required
● Adjustable Soft-Start Timing
● Thermal Shutdown
● Precision 2% Feedback Reference
● Input Over-Voltage Indicator at 19V
● Current Limit Scheme Helps Prevent Inductor From Saturation in Load Fault Conditions PACKAGE
● DSBGA-12, 1.77 mm x 2.1 mm
DESCRIPTION
The operating frequency remains constant with line and load. The valley current limit results in a smooth transition from constant voltage to constant current mode when current limit is detected without the use of current limit foldback. To reduce the possibility of saturating the inductor the valley current limit threshold reduces as the input voltage increases, and the on-time is reduced when current limit is detected.
