The LM2773 is a switched capacitor step-down regulator that produces a selectable 1.8V or 1.6V output. It is capable of supplying loads up to 300mA. The LM2773 operates with an input voltage from 2.5V to 5.5V, accommodating 1-cell Li-Ion batteries and chargers.
The LM2773 utilizes a regulated charge pump with gains of 2/3x and 1x. It has very low ripple and noise on both the input and output due to its pre-regulated 1.15MHz (typ.) switching frequency and spread spectrum operation. When output currents are low, the LM2773 automatically switches to a low-ripple PFM regulation mode to maintain high efficiency over the entire load range.
The LM2773 is available in TI's 0.5mm pitch 9-bump DSBGA.
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| Vin (min) (V) | 2.5 |
| Vin (max) (V) | 5.5 |
| Vout (min) (V) | 1.6 |
| Vout (max) (V) | 1.8 |
| Iout (max) (A) | 0.3 |
| Regulated outputs (#) | 1 |
| Switching frequency (min) (kHz) | 1150 |
| Switching frequency (max) (kHz) | 1150 |
| Iq (typ) (mA) | 0.048 |
| Features | Enable |
| Operating temperature range (°C) | -30 to 85 |
| Rating | Catalog |
| Type | Charge pump |
| DSBGA (YZR) | 9 | 3.0625 mm² 1.75 x 1.75 |
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