Analog Devices Inc./Maxim Integrated

The LTC1702 is a dual switching regulator controller optimized for high efficiency with low input voltages. It includes two complete, on-chip, independent switching regulator controllers each designed to drive a pair of external N-channel MOSFET devices in a voltage mode feedback, synchronous buck configuration. The LTC1702 uses a constant-frequency, true PWM design switching at 550kHz, minimizing external component size and cost and maximizing load transient performance. The synchronous buck architecture automatically shifts to discontinuous and then to Burst Mode™operation as the output load decreases, ensuring maximum efficiency over a wide range of load currents.The LTC1702 features an onboard reference trimmed to 0.5% and can provide better than 1% regulation at the converter outputs. Open-drain logic outputs indicate whether either output has risen to within 5% of the final output voltage and an optional latching FAULT mode protects the load if the output rises 15% above the intended voltage. Each channel can be enabled independently; with both channels disabled, the LTC1702 shuts down and supply current drops below 100µA.ApplicationsMicroprocessor Core and I/O SuppliesMultiple Logic Supply GeneratorDistributed Power ApplicationsHigh Efficiency Power Conversion

The LTC1703 is a dual switching regulator controller optimized for high efficiency with low input voltages. It includes two complete, on-chip, independent switching regulator controllers. Each is designed to drive a pair of external N-channel MOSFET devices in a voltage mode feedback, synchronous buck configuration. The LTC1703 includes digital output voltage adjustment on side 1 that conforms to the Intel Mobile VID specification. It uses a constant-frequency, true PWM design switching at 550kHz, minimizing external component size and cost and optimizing load transient performance. The synchronous buck architecture automatically shifts to discontinuous and then to Burst Mode®operation as the output load decreases, ensuring maximum efficiency over a wide range of load currents.The LTC1703 features an onboard reference trimmed to 1% and delivers better than 1.5% regulation at the converter outputs. An optional latching FAULT mode protects the load if the output rises 15% above the intended voltage. Each channel can be enabled independently; with both channels disabled, the LTC1703 shuts down and supply current drops below 100µA.ApplicationsMobile Pentium®III Processor SystemsMicroprocessor Core and I/O SuppliesMultiple Logic Supply GeneratorHigh Efficiency Power Conversion

The LTC1706-85 is a precision, digitally programmed resistive ladder which adjusts the output of any 0.8V-referenced regulator. Depending on the state of the five VID inputs, an output voltage between 1.05V and 1.825V is programmed in 25mV increments.The LTC1706-85 is designed specifically to program ADI's entire family of DC/DC converters in full compliance with the Intel Voltage Regulator Module (VRM) 8.5 specification.The LTC1706-85 programs the following ADI DC/DC converter products: LTC1622, LTC1628, LTC1629, LTC1702, LTC1735, LTC1735-1, LTC1772, LTC1773, LTC1778, LTC1929, LTC3728 and LTC3729.Consult factory for additional DC/DC converter products compatible with the LTC1706-85.ApplicationsServer/Desktop ComputersMultiprocessor Workstations and ServersMultiphase Processor Power Supply

The LTC1706-19 is a precision, digitally programmed, resistive ladder which adjusts the output of any 1.19V referenced regulator. Depending on the state of the four VID inputs, an output voltage between 1.3V and 2V is programmed in 50mV increments.The LTC1706-19 is designed specifically to program an entire family of DC/DC converters in full compliance with the Intel Mobile VID specification.The LTC1706-19 programs the following DC/DC converter products: LTC1433, LTC1434, LTC1435, LTC1435A, LTC1436, LTC1437, LTC1438, LTC1439, LTC1538-AUX, LTC1539, LTC1624 and LTC1625. (Consult Analog Devices for future compatible DC/DC converter products.)ApplicationsIntel Mobile Pentium®II Processor Power SupplyNotebook and Palmtop Computers, PDAsPortable InstrumentsBattery-Powered Equipment

The LTC1706-61 is a precision, digitally programmed, resistive ladder which adjusts the output of any 0.6V referenced regulator. Depending on the state of the five VID inputs, an output voltage between 0.8V and 1.55V is programmed in 25mV increments.The LTC1706-61 is designed specifically to program an entire family of ADI DC/DC converters with on board 0.6V references.The LTC1706-61 programs the following Analog Devices DC/DC converter products: LTC1629-6, LTC3714, LTC3731 and LTC3778. (Consult factory for additional DC/DC converter products.)ApplicationsAMD Opteron™Processor Power SupplyWorkstations and ServersLarge Memory Array Supply

The LTC1706-81 is a precision, digitally programmed, resistive ladder which adjusts the output of any 0.8V referenced regulator. Depending on the state of the five VID inputs, an output voltage between 1.3V and 3.5V is programmed in 50mV and 100mV increments.The LTC1706-81 is designed specifically to program an entire family of ADI DC/DC converters in full compliance with the Intel Desktop (VRM 8.4) VID specification.The LTC1706-81 programs the following Analog Devices DC/DC converter products: LTC1622, LTC1628, LTC1629, LTC1702, LTC1735, LTC1735-1, LTC1772 and LTC1929. (Consult factory for future compatible DC/DC converter products.)ApplicationsIntel Pentium II and III Processor Power SupplyAMD Athlon™Processor Power SupplyWorkstations and ServersLarge Memory Array Supply