Analog Devices Inc./Maxim Integrated

The LT3033 is a very low dropout voltage (VLDO™) linear regulator that operates from a single input supply down to 0.95V. The device supplies 3A output current with 95mV typical dropout voltage. The LT3033 is ideal for low input voltage to low output voltage applications, providing comparable electrical efficiency to a switching regulator.The LT3033 optimizes stability and transient response with low ESR ceramic output capacitors as small as 10μF. Other features include programmable current limit, an output current monitor and a power good flag to indicate output voltage regulation. In shutdown, quiescent current typically drops to 22μA. Internal protection circuitry includes reverse-battery protection, current limiting with foldback, thermal limiting with hysteresis and reverse-current protection.The LT3033 is available as an adjustable device with an output voltage down to the 200mV reference. The device is available in a thermally enhanced, low profile 3mm × 4mm × 0.75mm QFN package.APPLICATIONSHigh Efficiency Linear RegulatorsBattery-Powered SystemsLogic SuppliesPost Regulator for Switching SuppliesWireless ModemsFPGA Core Supplies

The LT3040 is a high performance, robust Voltage Output Reference/DAC buffer that employs a unique architecture that seeks to maintain the precision and accuracy of the Reference or DAC while sourcing up to 200mA. It features ADI’s ultralow noise and ultrahigh PSRR architecture for powering noise sensitive, high accuracy systems. Designed as an advanced voltage buffer for Voltage Output References/DACs, the LT3040 features extremely low 1/f noise, very low wideband noise, excellent PSRR over a wide frequency range and low dropout performance – a typical 350mV dropout at 200mA of source current.Operating quiescent current is nominally 2.5mA and drops to <1μA in shutdown. The LT3040’s wide output voltage range (0V to 15V) while maintaining unity-gain operation provides virtually constant output noise, PSRR, bandwidth and load regulation independent of the VINvoltage. Additionally, the buffer features programmable current limit, fast start capability and aFAULTflag to indicate faults on the output.The LT3040 is stable with a minimum 4.7μF ceramic output capacitor. Built-in protection includes reverse supply voltage protection, reverse current protection, internal current limit with fold-back and thermal limit with hysteresis. The LT3040 is available in thermally enhanced 12-Lead MSOP and 10-Lead 3mm × 3mm DFN packages.ApplicationsHigh Speed/High Precision Data ConvertersHigh Precision Voltage ReferencesVery Low Noise Instrumentation

The LT3041 is a high-performance, low-dropout linear regulator featuring Analog Devices, Inc., ultra-low noise and ultra-high power supply rejection ratio (PSRR) architecture for powering noise-sensitive applications. Designed as a precision-current reference followed by a high-performance voltage buffer, the LT3041 can be easily paralleled to further reduce noise, increase output current, and spread heat on the printed circuit board (PCB).The LT3041 supplies 1 A at a typical 310 mV dropout voltage. The operating quiescent current is nominally 4.3 mA and drops to 18 μA in shutdown. The wide output voltage range (0.2 V to 15 V) of the LT3041 maintained by the unity-gain operation provides virtually constant output noise, PSRR, bandwidth, and load regulation, independent of the programmed output voltage. Additionally, the regulator features VIOC, programmable current limit, fast start-up capability, and programmable power good to indicate output-voltage regulation.Built-in protection includes reverse-battery protection, reverse-current protection, internal current limit with foldback, and thermal limit with hysteresis. The LT3041 is available in a thermally enhanced, 14-lead 4 mm × 3 mm, DFN package.APPLICATIONSRF power supplies: phase-locked loops, voltage-controlled oscillators, mixers, low-noise amplifiers, and power amplifiersLow-noise instrumentationHigh-speed and high-precision data convertersMedical applications: imaging and diagnosticsPostregulator for switching supplies

The LT3045 is a high performance low dropout linear regulator featuring LTC’s ultralow noise and ultrahigh PSRR architecture for powering noise sensitive applications. Designed as a precision current reference followed by a high performance voltage buffer, the LT3045 can be easily paralleled to further reduce noise, increase output current and spread heat on the PCB.The device supplies 500mA at a typical 260mV dropout voltage. Operating quiescent current is nominally 2.2mA and drops to <<1µA in shutdown. The LT3045’s wide output voltage range (0V to 15V) while maintaining unity-gain operation provides virtually constant output noise, PSRR, bandwidth and load regulation, independent of the programmed output voltage. Additionally, the regulator features programmable current limit, fast start-up capability and programmable power good to indicate output voltage regulation.The LT3045 is stable with a minimum 10µF ceramic output capacitor. Built-in protection includes reverse-battery protection, reverse-current protection, internal current limit with foldback and thermal limit with hysteresis. The LT3045 is available in thermally enhanced 12-Lead MSOP and 10-Lead 3mm × 3mm DFN packages.The LT3045-EP supports defense and aerospace applications (AQEC).VIOC FunctionLT3045-1YesLT3045NoAPPLICATIONSRF Power Supplies: PLLs, VCOs, Mixers, LNAs, PAsVery Low Noise InstrumentationHigh Speed/High Precision Data ConvertersMedical Applications: Imaging, DiagnosticsPrecision Power SuppliesPost-Regulator for Switching Supplies

The LT3045-1 is a high performance low dropout linear regulator featuring LTC’s ultralow noise and ultrahigh PSRR architecture for powering noise sensitive applications. Designed as a precision current reference followed by a high performance voltage buffer, the LT3045-1 can be easily paralleled to further reduce noise, increase output current and spread heat on the PCB. In addition to the LT3045 feature set, the LT3045-1 incorporates a VIOC tracking function to control an upstream switching converter to maintain a constant voltage across the LT3045-1 and hence minimize power dissipation.The device supplies 500mA at a typical 260mV dropout voltage. Operating quiescent current is nominally 2.3mA and drops to <<1μA in shutdown. The LT3045-1’s wide output voltage range (0V to 15V) while maintaining unity-gain operation provides virtually constant output noise, PSRR, bandwidth and load regulation, independent of the programmed output voltage. Additionally, the regulator features programmable current limit, fast start-up capability and programmable power good to indicate output voltage regulation.The LT3045-1 is stable with a minimum 10μF ceramic output capacitor. Built-in protection includes reverse battery protection, reverse current protection, internal current limit with foldback and thermal limit with hysteresis. The LT3045-1 is available in thermally enhanced 12-Lead MSOP and 3mm × 3mm DFN packages.VIOC FunctionLT3045-1YesLT3045NoApplicationsRF Power Supplies: PLLs, VCOs, Mixers, LNAs, PAsVery Low Noise InstrumentationHigh Speed/High Precision Data ConvertersMedical Applications: Imaging, DiagnosticsPost-Regulator for Switching Supplies

The LT3046 is a high-performance, low-dropout linear regulator featuring Analog Devices, Inc. ultra-low noise and ultra-high PSRR architecture for powering noisesensitive applications. Designed as a precision current reference followed by a high-performance voltage buffer, the LT3046 can be easily paralleled to further reduce noise, increase output current, and spread heat on the PCB.The device supplies 200mA at a typical 300mV dropout voltage. Operating quiescent current is nominally 3.7mA and drops to 26μA in shutdown. The LT3046’s wide output-voltage range (0.2V to 19V) while maintaining unity-gain operation provides virtually constant output noise, PSRR, bandwidth, and load regulation, independent of the programmed output voltage. Additionally, the regulator features programmable current limit, fast start-up capability, and programmable power good to indicate output voltage regulation.Built-in protection includes reverse-battery protection, reverse-current protection, internal current limit with foldback and thermal limit with hysteresis. The LT3046 is available in a thermally enhanced, 12-lead, 3mm × 3mm, DFN package.APPLICATIONSRF Power Supplies: PLLs, VCOs, Mixers, LNAs, PAs Very Low-Noise Instrumentation High-Speed/High-Precision Data Converters Post-Regulator for Switching Supplies

The LT3048 series generate low noise, low ripple bias supplies from input voltages of 2.7V to 4.8V.The LT3048 includes a boost regulator and a LDO linear regulator. The boost regulator provides power to the linear regulator.The boost regulator output voltage is regulated to 1.1V above the LDO output, optimizing LDO ripple rejection and transient response. Fixed frequency operation and current mode control allow the use of very small inductors and results in low, predictable output ripple.The linear regulator in the LT3048 generates a programmable output and the LT3048-XX generate fixed output voltages. High power supply ripple rejection combined with a low noise internal reference results in less than 500μVP-Poutput ripple and noise.The LT3048 is available in a 8-lead 2mm × 2mm DFN package.ApplicationsSensor BiasOp Amp Supply