The LM2703 is a micropower step-up DC/DC in a small 5-lead SOT-23 package. A current limited, fixed off-time control scheme conserves operating current resulting in high efficiency over a wide range of load conditions. The 22V switch allows for output voltages as high as 21V. The low 400ns off-time permits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications. The LM2703 is ideal for LCD panels requiring low current and high efficiency as well as white LED applications for cellular phone back-lighting. The LM2703 can drive up to 4 white LEDs from a single Li-Ion battery.
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| Topology | Boost |
| Vin (min) (V) | 2.2 |
| Vin (max) (V) | 7 |
| Vout (min) (V) | 1.24 |
| Vout (max) (V) | 21 |
| Switch current limit (typ) (A) | 0.35 |
| Type | Converter |
| Regulated outputs (#) | 1 |
| Switching frequency (min) (kHz) | 600 |
| Switching frequency (max) (kHz) | 2500 |
| Iq (typ) (mA) | 0.235 |
| Features | Enable, Nonsynchronous rectification |
| Duty cycle (max) (%) | 76 |
| Operating temperature range (°C) | -40 to 85 |
| Rating | Catalog |
| SOT-23 (DBV) | 5 | 8.12 mm² 2.9 x 2.8 |