Maxim Integrated Products Inc. (Sunnyvale, CA) introduced the new MAX1945 internal switch, step-down, dc/dc regulator, which occupies a footprint of 490.32mm² and is suitable to generate core and I/O supplies for DSP, FPGAs, ASICs and microprocessors. Available in a thermally enhanced, 28-pin, TSSOP with an exposed metal pad, the IC integrates power MOSFETs to reduce the size and complexity of the circuit. The device also includes digital soft-start, current-limit/short-circuit protection and thermal-overload protection functions.
The MAX1945 operates from a 2.6V to 5.5V input and generates output voltages down to 0.8V. When a 3V to 5.5V bias supply is available, the device can operate from voltages as low as 2.25V. Its selectable 500kHz or 1MHz switching frequency further reduces the size and cost of external components. The MAX1945 is compatible with both ceramic and electrolytic capacitors.
The MAX1945 is specified for operation over the extended industrial temperature range and is priced starting at $4.20 for 1,000 pieces.
