Microchip Technology

The MIC5167 is a high-efficiency, 6A, integrated switch, synchronous buck (step-down) regulator designed for use as a double data rata (DDR) or quad data rate (QDR) terminator. The MIC5167 is optimized for highest efficiency, achieving more than 94% efficiency while still switching at 1MHz over a broad range. The device works with a small 0.4µH inductor and 300µF output capacitor. The ultra-high speed control loop keeps the output voltage within regulation even under extreme transient load swings commonly found in FPGAs and low-voltage ASICs. The output voltage is controlled externally by input to the VDDQ pin. The output voltage is one-half the voltage applied to the VDDQ pin. The output voltage can be adjusted down to 0.6V to address low voltage power needs. The MIC5167 will source 6A and sink up to 6A. A window comparator monitors the output voltage and controls the power good output. If the output voltage is outside ±15% limit of VREF the power good is driven low.

The MIC5190 is an ultra high-speed linear regulator. It uses an external N-Channel FET as its power device. The MIC5190 offers ultra high-speed to cope with the fast load demands of microprocessor cores, ASICs, and other high-speed devices. Signal bandwidths of greater than 500kHz can be achieved with a minimum amount of capacitance while at the same time keeping the output voltage clean, regardless of load demand. A powerful output driver delivers large MOSFETs into their linear regions, achieving ultra-low dropout voltage. 1.25VIN±10% can be turned into 0.9V ±1% without the use of a large amount of capacitance. MIC5190 (0.5V reference) is optimized for output voltages of below 1.0V. The MIC5190 is offered in 10-lead MSOP-10 packages and has an operating junction temperature range of -40°C to +125°C.

The MIC5200 is an efficient linear voltage regulator with very low dropout voltage (typically 17mV at light loads and 200mV at 100mA) and very low ground current (1mA at 100mA output), offering better than 1% initial accuracy with a logic-compatible on/off switching input. Designed especially for handheld battery powered devices, the MIC5200 is switched by a CMOS- or TTL-compatible logic signal. The enable control may be tied directly to VIN if unneeded. When disabled, power consumption drops nearly to zero. The ground current of the MIC5200 increases only slightly in dropout, further prolonging battery life. Key MIC5200 features include protection against reversed battery, current limiting, and over-temperature shutdown. The MIC5200 is available in several fixed voltage and accuracy configurations.

The MIC5202 is a dual linear voltage regulator with low dropout voltage (typically 17mV at light loads and 210mV at 100mA), and low ground current (1mA at 100mA per output). Ideal for battery-operated applications, the MIC5202 offers 1% output voltage accuracy and dual enable pins. The enable pins may be driven individually or tied directly to VIN. When the part is disabled, power consumption drops to nearly zero. The MIC5202 ground current increases slightly in dropout, which minimizes power consumption and increases battery life. Some key features include reversed battery protection, current limit, and overtemperature protection. The MIC5202 is available in fixed output voltages in the small 8-pin SOIC package.

The MIC5203 is a µCap 80mA linear voltage regulator with very low dropout voltage (typically 20mV at light loads and 300mV at 80mA) and very low ground current (225µA at 20mA output), offering better than 3% initial accuracy with a logic-compatible enable input. The µCap regulator design is optimized to work with low-value, low-cost ceramic capacitors. The outputs typically require only 0.47µF of output capacitance for stability. Designed especially for handheld, battery-powered devices, the MIC5203 can be controlled by a CMOS- or TTL-compatible logic signal. When disabled, power consumption drops nearly to zero. If on-off control is not required, the enable pin may be tied to the input for 3-terminal operation. The ground current of the MIC5203 increases only slightly in dropout, further prolonging battery life. Key MIC5203 features include current limiting, over-temperature shutdown, and protection against reversed battery. The MIC5203 is available in 2.8V, 3.0V, 3.3V, 3.6V, 3.8V, 4.0V, 4.5V, 4.75V, and 5.0V fixed voltages.