The LMR14203 is a PWM DC/DC buck (step-down) regulator. With a wide input range from 4.5V-42V, it is suitable for a wide range of applications such as power conditioning from unregulated sources. They feature a low RDSON (0.9Ω typical) internal switch for maximum efficiency (85% typical). Operating frequency is fixed at 1.25 MHz allowing the use of small external components while still being able to have low output voltage ripple. Soft-start can be implemented using the shutdown pin with an external RC circuit allowing the user to tailor the soft-start time to a specific application.
The LMR14203 is optimized for up to 300 mA load current.
Additional features include: thermal shutdown, VIN under-voltage lockout, and gate drive under-voltage lockout. The LMR14203 is available in a low profile SOT-6L package.
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| Vin (Min) (V) |
| Vin (Max) (V) |
| Vout (Min) (V) |
| Vout (Max) (V) |
| Iout (Max) (A) |
| Regulated outputs (#) |
| Switching Frequency (Min) (kHz) |
| Switching Frequency (Max) (kHz) |
| Iq (Typ) (mA) |
| Features |
| Control mode |
| Duty cycle (Max) (%) |
| Operating temperature range (C) |
| Rating |
| Package Group |
| Type |
| Package size: mm2:W x L (PKG) |
| LMR14203 |
|---|
| 4.5 |
| 42 |
| 0.765 |
| 34 |
| 0.3 |
| 1 |
| 950 |
| 1500 |
| 1.3 |
|
Enable Over Current Protection |
| Current Mode |
| 87 |
| -40 to 125 |
| Catalog |
| SOT-23-THIN | 6 |
| Converter |
| 6SOT-23-THIN: 8 mm2: 2.8 x 2.9 (SOT-23-THIN | 6) |
| Order now |
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