The ADP5310 combines dual buck regulators and one load switchin a 16-lead TSSOP_EP package that meets demanding performanceand board space requirements. The device enables directconnection to a wide input voltage range of 2.7 V to 15.0 V, allowingthe use of multiple alkaline/NiMH or lithium cells and otherpower sources.The buck regulator in Channel 1 uses a current mode, constantfrequency pulse-width modulation (PWM) control scheme forexcellent stability and transient performance, which provides upto 800 mA of output current. The automatic PWM/pulse skippingmode (PSM) control scheme achieves excellent efficiency in lightoutput current. A power-good signal indicates that the outputof Channel 1 is within 92% of its nominal value.An ultralow power buck regulator is integrated in Channel 2 withthe SYNC/MODE pin to control its operation mode. WhenSYNC/MODE is set to low, the buck regulator operates in hysteresismode, which draws only 700 nA of quiescent current to regulatethe output under zero load and provides up to 50 mA of outputcurrent. Hysteresis mode helps achieve excellent efficiency at lessthan 1 mW and can work as a keep-alive power supply in a batterypoweredsystem. When the SYNC/MODE pin is set to high, thebuck regulator switches to a traditional constant frequency PWMcontrol scheme to provide low output ripple for noise sensitiveapplications, and the buck regulator provides up to 300 mA ofoutput current in PWM mode.Channel 3 integrates a high-side load switch that operates from1.65 V to 5.5 V with its input connected to the output of Channel 2.The load switch provides power domain isolation and extendsbattery operation time.Other key safety features of the ADP5310 include overcurrentprotection (OCP), thermal shutdown (TSD), and input undervoltagelockout (UVLO). The ADP5310 is rated for the ?40?Cto +125?C junction temperature range.Applications Energy (gas and water) metering Portable and battery-powered equipment Medical applications? Keep-alive power supplies

The ADP7104 is a CMOS, low dropout linear regulator that operates from 3.3 V to 20 V and provides up to 500 mA of output current. This high input voltage LDO is ideal for regulation of high performance analog and mixed signal circuits operating from 19 V to 1.22 V rails. Using an advanced proprietary architecture, it provides high power supply rejection, low noise, and achieves excellent line and load transient response with just a small 1 ?F ceramic output capacitor.The ADP7104 is available in seven fixed output voltage options and an adjustable version, which allows output voltages that range from 1.22 V to VIN ? VDO via an external feedback divider.The ADP7104 output noise voltage is 15 ?V rms and is independent of the output voltage. A digital power-good output allows power system monitors to check the health of the output voltage. A user programmable precision undervoltage lockout function facilitates sequencing of multiple power supplies. The ADP7104 is available in 8-lead, 3 mm ? 3 mm LFCSP and 8-lead SOIC packages. The LFCSP offers a very compact solution and also provides excellent thermal performance for applications requiring up to 500 mA of output current in a small, low-profile footprint. APPLICATIONS Regulation to noise sensitive applications:?ADC, DAC circuits, precision amplifiers, high frequency oscillators, clocks, and PLLs Communications and infrastructure Medical and healthcare Industrial and instrumentation

The ADP7104 is a CMOS, low dropout linear regulator that operates from 3.3 V to 20 V and provides up to 500 mA of output current. This high input voltage LDO is ideal for regulation of high performance analog and mixed signal circuits operating from 19 V to 1.22 V rails. Using an advanced proprietary architecture, it provides high power supply rejection, low noise, and achieves excellent line and load transient response with just a small 1 ?F ceramic output capacitor.The ADP7104 is available in seven fixed output voltage options and an adjustable version, which allows output voltages that range from 1.22 V to VIN ? VDO via an external feedback divider.The ADP7104 output noise voltage is 15 ?V rms and is independent of the output voltage. A digital power-good output allows power system monitors to check the health of the output voltage. A user programmable precision undervoltage lockout function facilitates sequencing of multiple power supplies. The ADP7104 is available in 8-lead, 3 mm ? 3 mm LFCSP and 8-lead SOIC packages. The LFCSP offers a very compact solution and also provides excellent thermal performance for applications requiring up to 500 mA of output current in a small, low-profile footprint. APPLICATIONS Regulation to noise sensitive applications:?ADC, DAC circuits, precision amplifiers, high frequency oscillators, clocks, and PLLs Communications and infrastructure Medical and healthcare Industrial and instrumentation

The ADP7112 is a CMOS, low dropout (LDO) linear regulator that operates from 2.7 V to 20 V and provides up to 200 mA of output current. This high input voltage LDO is ideal for the regulation of high performance analog and mixed signal circuits operating from 20 V down to 1.2 V rails. Using an advanced proprietary architecture, the device provides high power supply rejection, low noise, and achieves excellent line and load transient response with a small 2.2 ?F ceramic output capacitor. The ADP7112?regulator output noise is 11 ?V rms independent of the output voltage for the fixed options of 5 V or less.The ADP7112?is available in 16 fixed output voltage options. The following voltages are available from stock: 1.2 V (adjustable), 1.8 V, 2.5 V, 3.3 V, and 5.0 V. Additional voltages available by special order are 1.5 V, 1.85 V, 2.0 V, 2.2 V, 2.75 V, 2.8 V, 2.85 V, 3.8 V, 4.2 V, and 4.6 V.Each fixed output voltage can be adjusted above the initial set point with an external feedback divider. This allows the ADP7112?to provide an output voltage from 1.2 V to VIN ? VDO with high PSRR and low noise.User programmable soft start with an external capacitor is available in the?ADP7112. The ADP7112?is available in a 6-ball 1 mm ? 1.2mm WLCSP, making it a very compact solution.Applications Regulation to noise sensitive applications ADC, DAC circuits, precision amplifiers, power for VCO VTUNE control Communications and infrastructure Medical and healthcare Industrial and instrumentation

The ADP7157 is an adjustable linear regulator that operates from 2.3 V to 5.5 V and provides up to 1.2 A of output current. Output voltages from 1.2 V to 3.3 V are possible depending on the model. Using an advanced proprietary architecture, the device provides high power supply rejection and ultralow noise, achieving excellent line and load transient response with only a 10 ?F ceramicoutput capacitor.The ADP7157 is available in four models that optimize powerdissipation and PSRR performance as a function of the inputand output voltage.The typical output noise the ADP7157 regulator is 0.9 ?V rms from 100 Hz to 100 kHz and 1.7 nV/?Hz for noise spectral density from 10 kHz to 1 MHz. The ADP7157 is available in 10-lead, 3 mm ?3 mm LFCSP and 8-lead SOIC packages, making it not only avery compact solution, but also providing excellent thermalperformance for applications requiring up to 1.2 A of outputcurrent in a small, low profile footprint.Applications Regulation to noise sensitive applications: phase-locked loops (PLLs), voltage controlled oscillators (VCOs), and PLLs with integrated VCOs Communications and infrastructure Backhaul and microwave links

The ADP7158 is a linear regulator that operates from 2.3 V to 5.5 V and provides up to 2 A of output current. Using an advanced proprietary architecture, it provides high power supply rejection and ultralow noise, achieving excellent line and load transient response with only a 10 ?F ceramic output capacitor.There are 16 standard output voltages for the ADP7158. The following voltages are available from stock: 1.2 V, 1.8 V, 2.0 V, 2.5 V, 2.8 V, 3.0 V, and 3.3 V. Additional voltages available by special order are 1.3 V, 1.5 V, 1.6 V, 2.2 V, 2.6 V, 2.7 V, 2.9 V, 3.1 V, and 3.2 V.The ADP7158 regulator typical output noise is 0.9 ?V rms from 100 Hz to 100 kHz and 1.7 nV/?Hz for noise spectral density from 10 kHz to 1 MHz. The ADP7158 is available in a 10-lead, 3 mm ? 3 mm LFCSP and 8-lead SOIC packages, making it not only a very compact solution, but also providing excellent thermal performance for applications requiring up to 2 A of output current in a small, low profile footprint.Applications Regulation to noise sensitive applications: phase-locked loops (PLLs), voltage controlled oscillators (VCOs), and PLLs with integrated VCOs Communications and infrastructure Backhaul and microwave links

The ADP7183 is a complementary metal oxide semiconductor (CMOS), low dropout (LDO) linear regulator that operates from ?2.0 V to ?5.5 V and provides up to ?300 mA of output current. This LDO regulator is ideal for regulation of high performance analog and mixed-signal circuits operating from ?0.5 V down to ?4.5 V. Using an advanced proprietary architecture, the ADP7183 provides high PSRR and low noise, and it achieves excellent line and load transient response with a small 4.7 ?F ceramic output capacitor.The ADP7183 is available in 15 fixed output voltage options. The following voltages are available from stock: ?0.5 V, ?1.0 V,?1.2 V, ?1.5 V, ?1.8 V, ?2.0 V, ?2.5 V, ?3.0 V, and ?3.3 V. Additional voltages available by special order are ?0.8 V, ?0.9 V, ?1.3 V, ?2.8 V, ?4.2 V, and ?4.5 V. An adjustable version is also available that allows output voltages that range from ?0.5 V to ?VIN + 0.5 V with an external feedback divider.The enable logic feature is capable of interfacing with positive or negative logic levels for maximum flexibility.The ADP7183 regulator output noise is 4 ?V rms independent of the output voltage. The ADP7183 is available in an 8-lead, 2 mm ? 2 mm LFCSP, making it not only a very compact solution but also providing excellent thermal performance for applications requiring up to ?300 mA of output current in a small, low profile footprint.Applications Regulation to noise sensitive applications: analog-to-digital converters (ADCs), digital-to-analog converters (DACs), precision amplifiers Communications and infrastructure Medical and healthcare Industrial and instrumentation

The LTC1262 is a regulated 12V, 30mA output DC/DC converter. It is designed to provide the 12V ?5% output necessary to program byte-wide flash memories. The output will provide up to 30mA from input voltages as low as 4.75V without using any inductors. Only four external capacitors are required to complete an extremely small surface mountable circuit.The TTL compatible shutdown pin can be directly connected to a microprocessor and reduces the supply current to less than 0.5?A. The LTC1262 offers improved shutdown current performance and requires fewer external components than competing solutions.The LTC1262 is available in an 8-pin PDIP or SO-8 package.Applications 12V Flash Memory Programming Supplies Compact 12V Op Amp Supplies Battery-Powered Systems

The LT1304 is a micropower step-up DC/DC converter ideal for use in small, low voltage, battery-operated systems. The devices operate from a wide input supply range of 1.5V to 8V. The LT1304-3.3 and LT1304-5 generate regulated outputs of 3.3V and 5V and the adjustable LT1304 can deliver output voltages up to 25V. Quiescent current, 120?A in active mode, decreases to just 10?A in shutdown with the low-battery detector still active. Peak switch current, internally set at 1A, can be reduced by adding a single resistor from the ILIM pin to ground. The high speed operation of the LT1304 allows the use of small, surface-mountable inductors and capacitors. The LT1304 is available in an 8-lead SO package.Applications 2-, 3-, or 4-Cell to 5V or 3.3V Step-Up Portable Instruments Bar Code Scanners Palmtop Computers Diagnostic Medical Instrumentation Personal Data Communicators/Computers

The LTC1550/LTC1551 are switched capacitor charge pump voltage inverters which include internal linear post-regulators to minimize output ripple. Output voltages are fixed at ?4.1V, with ripple voltages typically below 1mVP-P. The LTC1550 is also available in an adjustable output voltage version. The LTC1550/LTC1551 are ideal for use as bias voltage generators for GaAs transmitter FETs in portable RF and cellular telephone applications. The LTC1550/LTC1551 operate from single 4.5V to 6.5V supplies and draw typical quiescent currents of 4.25mA with a 5V supply. Each device includes a TTL compatible Shutdown pin which drops supply current to 0.2?A typically. The LTC1550 Shutdown pin is active low (SHDN), while the LTC1551 Shutdown pin is active high (SHDN). Only four external components are required: an input bypass capacitor, two 0.1?F charge pump capacitors and a filter capacitor at the linear regulator output. The adjustable LTC1550 requires two additional resistors to set the output voltage. The LTC1550/LTC1551 will supply up to 10mA output current with a 5V supply, while maintaining guaranteed output regulation of ?5%. The fixed voltage LTC1550/LTC1551 are available in S0-8 plastic packages. The adjustable LTC1550 is available in a 16-pin SSOP.Applications GaAs FET Bias Generators Negative Supply Generators Battery-Powered Systems Single Supply Applications