Datasheet Details
| Part number | LM3253 |
|---|---|
| Manufacturer | Texas Instruments |
| File Size | 0.96 MB |
| Description | High-Current Step-Down Converter |
| Datasheet |
 LM3253 Datasheet
|
|
|
General Description
The LM3253 is a DC-DC converter optimized for powering multi-mode 2G/3G/4G RF power amplifiers (PAs) from a single Lithium-Ion cell.
The LM3253 steps down an input voltage from 2.7V to 5.5V to a dynamically adjustable output voltage of 0.4V to 3.6V.
Key Features
- 1.
- 2 High-Efficiency PFM and PWM Modes with Internal Synchronous Rectification.
- Analog Bypass Function with Low Dropout Resistance (45 mΩ typ. ).
- Dynamically Adjustable Output Voltage, 0.4V to 3.6V (typ. ), in PFM and PWM modes.
- 3A Maximum Load Current in PWM Mode.
- 2.7MHz (average) PWM Switching Frequency.
- Modulated Switching Frequency to Aid Rx Band Compliance.
- Operates From a Single Li-ion Cell (2.7V to 5.5V).
- ACB Reduces Ind.