The LM27313/-Q1 switching regulator is a current-mode boost converter with a fixed operating frequency of 1.6 MHz.
The use of the SOT-23 package, made possible by the minimal losses of the 800-mA switch, and the small inductors and capacitors result in extremely high power density. The 30-V internal switch makes these solutions perfect for boosting to voltages of 5 V to 28 V.
This device has a logic-level shutdown pin that can be used to reduce quiescent current and extend battery life.
Protection is provided through cycle-by-cycle current limiting and thermal shutdown. Internal compensation simplifies design and reduces component count.
| Topology | Boost |
| Vin (min) (V) | 2.7 |
| Vin (max) (V) | 14 |
| Vout (min) (V) | 4 |
| Vout (max) (V) | 28 |
| Switch current limit (typ) (A) | 1.25 |
| Type | Converter |
| Regulated outputs (#) | 1 |
| Switching frequency (min) (kHz) | 1150 |
| Switching frequency (max) (kHz) | 1900 |
| Iq (typ) (mA) | 2.1 |
| Features | Enable, Light Load Efficiency, Nonsynchronous rectification |
| Duty cycle (max) (%) | 88 |
| Operating temperature range (°C) | -40 to 125 |
| Rating | Automotive |
| SOT-23 (DBV) | 5 | 8.12 mm² 2.9 x 2.8 |
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