Linear Technology Corporation (Milpitas, CA) introduced the LTM8057 and LTM8058, 1.5-W output µModule (micromodule) DC/DC converters with 2-kVAC galvanic isolation (production tested to 3 kVDC) in a 9-mm x 11.25-mm x 4-mm BGA (ball grid array) package. These µModule converters are UL60950 recognized components under file #464570. The devices operate from an input voltage range of 3.1 V to 31 V, delivering a regulated output voltage on the secondary side, adjustable from 2.5 V to 12 V (LTM8057) and 1.2 V to 12 V (LTM8058). The LTM8058 includes a low noise linear post regulator that reduces the output ripple to 20 µVRMS at 300 mA. The LTM8057 maintains output voltage regulation accuracy of ±5 percent from -40°C to +125°C. The LTM8058’s linear post regulator improves output voltage regulation to ±2.5 percent over the same temperature range. The LTM8057 and LTM8058 include:
- An isolated transformer.
- Control circuitry.
- Power switches.
- A modest amount of input and output capacitance.
For more information, visit www.linear.com