← All parts
LMR14030 Buck Converter
LMR14030
Texas Instrumentspower regulator
The LMR14030 is a 40V, 3.5A step-down converter with an integrated high-side MOSFET and features like ultra-low quiescent current, adjustable switching frequency, and built-in protection mechanisms.
In stock
Specifications
8- Operating Voltage
- VIN: 4V to 40V
- Supply Current
- ISHDN: 1.0μA, IQ: 40μA (non-switching) (VEN = 0 V, TA = 25°C, 4.0V ≤ VIN ≤ 40V)
- Interface
- GPIO
- Resolution
- Not applicable
- Range
- VIN: 4V to 40V, VOUT: 0.8V to 28V
- Accuracy
- Not applicable
- Temperature Range
- -40°C to +125°C
- Package
- HSOIC (8-pin)
Pinout
8| Pin | Name | Functions | Notes |
|---|---|---|---|
| BOOT | Bootstrap capacitor connection for high-side MOSFET driver | GPIO | Connect a high quality 0.1 μF capacitor from BOOT to SW. |
| VIN | Input voltage | POWER | Connect to power supply and bypass capacitors CIN. Path from VIN pin to high frequency bypass CIN and GND must be as short as possible. |
| EN | Enable pin | GPIO | With internal pull-up current source. Pull below 1.2 V to disable. Float or connect to VIN to enable. Adjust the input under voltage lockout with two resistors. |
| RT/SYNC | Resistor Timing or External Clock input | GPIO | An internal amplifier holds this pin at a fixed voltage when using an external resistor to ground to set the switching frequency. If the pin is pulled above the PLL upper threshold, a mode change occurs and the pin becomes a synchronization input. |
| FB | Feedback input pin | GPIO | Connect to the feedback divider to set VOUT. Do not short this pin to ground during operation. |
| SS | Soft-start control pin | GPIO | Connect to a capacitor to set soft-start time. |
| GND | System ground pin | GND | |
| SW | Switching output of the regulator | POWER | Internally connected to high-side power MOSFET. Connect to power inductor. |
Interactive pinout
Highlight:
LMR14030
Click a pin to copy its name · tap a tag above to spotlight a bus.