Micrel Inc. introduced the MIC28511/12/13, a family of pin-compatible high voltage (HV) synchronous step-down switching regulators with integrated power switches capable of providing up to 4 A (MIC28513) output current and a wide input supply range from 4.6 V to 70 V.
The MIC28511/12/13 are offered in both Hyper Speed Control™ and HyperLight Load® architectures, which allow for high VIN (low VOUT) operation and ultra-fast transient response while reducing the required output capacitance and providing very good light-load efficiency. These products can be used in wide variety applications including industrial control, power metering, telecom, and medical equipment. The MIC28511/12/13 are currently available in volume quantities with 1,000 quantity pricing starting at $1.49/$1.85/$1.42 respectively.
For more detail: Micrel’s High Voltage Synchronous Buck Regulator Family with FETZilla Technology Stays Cool