The LM8801 step-down DC-DC converter is optimized for powering ultra-low voltage circuits from a single Li-Ion cell and input voltage rails from 2.3V to 5.5V. It provides up to 600 mA load current over the entire input voltage range.
The LM8801 has a mode-control pin that allows the user to select continuous PWM operation over the complete load range or an auto PFM-PWM mode that changes modes automatically depending on the load. During PWM mode, the device operates at a fixed-frequency of 6 MHz (typ.). In Auto PFM-PWM mode, hysteretic PFM extends the battery life through reduction of the quiescent current during light loads and system standby.
The LM8801 is available in a 6-bump DSBGA package. Only three compact external surface-mount components, an inductor and two capacitors, are required.
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| Vin (min) (V) | 2.3 |
| Vin (max) (V) | 5.5 |
| Vout (min) (V) | 1.7927 |
| Vout (max) (V) | 1.8473 |
| Iout (max) (A) | 0.6 |
| Iq (typ) (mA) | 0.027 |
| Switching frequency (min) (kHz) | 5600 |
| Switching frequency (max) (kHz) | 6400 |
| Features | Enable, Forced PWM, Light load efficiency |
| Operating temperature range (°C) | -30 to 85 |
| Rating | Catalog |
| Regulated outputs (#) | 1 |
| Control mode | Voltage mode |
| Duty cycle (max) (%) | 98 |
| Type | Converter |
| DSBGA (YFQ) | 6 | 1.4000000000000001 mm² 1.4000000000000001 x 1 |
| DSBGA (YQA) | 6 | 0.36000000000000012000000000000001 mm² 0.6000000000000001 x 0.6000000000000001 |
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