Overview: EL7512
High Frequency PWM Step-Up Regulator The EL7512 is a high frequency, high efficiency step-up DC:DC regulator operated at fixed frequency PWM mode. With an integrated 1A MOSFET, it can deliver up to 600mA output current at up to 90% efficiency. The adjustable switching frequency is up to 1.2MHz, making it ideal for DSL applications.
When shut down, it draws <3µA of current. This feature, along with the minimum starting voltage of 2V, makes it suitable for portable equipment powered by one lithium ion or 3 to 4 NiMH cells.
The EL7512 is available in a 10-pin MSOP package, with maximum height of 1.1mm. With proper external ponents, 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. Pinout EL7512 (10-PIN MSOP)
TOP VIEW VIN (2V9V) C1 10µF R3 100k L1 10µH D1 1 PGND 2 SGND 3 RT 4 EN 5 LBI LX 10 VDD 9 FB 8 SS 7 LBO 6 C3 20nF VOUT R4 1k C5 47µF (12V up to 400mA) C4
0.1µF R2 80.6k
R1 10k C10 4.7nF DATASHEET FN7290 Rev 1.
