EL7515 is a high frequency, high efficiency step-up DC/DC regulator operated at fixed frequency PWM mode. With an integrated 1.4A MOSFET, it can deliver up to 600mA output current at up to 92% efficiency. The adjustable switching frequency is up to 1.2MHz, making it ideal for DSL applications. When shut down, it draws <1µA of current. This feature, along with the minimum starting voltage of 1.8V, makes it suitable for portable equipment powered by one Lithium Ion, 3 to 4 NiMH cells, or 2 cells of alkaline battery. The EL7515 is available in a 10 Ld MSOP package, with maximum height of 1.1mm. With proper external components, the whole converter takes less than 0.25in2 PCB space. This device is specified for operation over the full -40°C to +85°C temperature range.
The EL7515 is a high‑frequency PWM step‑up regulator designed for portable and DSL applications. It operates from 1.8 V to 13.2 V input and provides a selectable output from 4.5 V to 17 V, delivering up to 600 mA with up to 92 % efficiency. The device is offered in a 10‑lead MSOP package no taller than 1.1 mm and is RoHS‑compliant.
Key features include an integrated 1.4 A MOSFET, adjustable switching frequency up to 1.2 MHz, <1 µA shutdown current, soft‑start, low‑battery detection, and internal thermal protection. The datasheet provides detailed electrical specifications, pin descriptions, layout guidelines, and typical performance curves.
| Input voltage range | 1.8 V to 13.2 V |
|---|---|
| Maximum efficiency | up to 92 % |
| Adjustable switching frequency | up to 1.2 MHz |
| Shutdown current | < 1 µA |
| Maximum output current | 600 mA |
| Package | 10‑lead MSOP, max height 1.1 mm |
| Operating temperature range | -40 °C to +85 °C |
| Thermal shutdown temperature | ≈ +135 °C |
| MOSFET current limit (nominal) | 1.4 A (guaranteed 1 A) |
The EL7515 operates from 1.8 V up to 13.2 V input.
The device can achieve up to 92 % efficiency.
In shutdown it draws less than 1 µA of current.
The adjustable switching frequency can be set up to 1.2 MHz.