LT306345V VIN, Micropower, Low Noise, 200mA LDO with Active Output Discharge | Power Management (PMIC) | 19 | Active | The LT3063 is a micropower, low dropout (LDO) linear regulator that operates over a 1.6V to 45V supply range and is available in a series of fixed output and adjustable versions. The device supplies 200mA of output current with a typical dropout voltage of 300mV. A single external capacitor provides programmable low noise reference performance and output soft-start functionality. The LT3063’s quiescent current is merely 45μA and provides fast transient response with a minimum 3.3μF output capacitor. In shutdown, quiescent current is less than 3μA and the reference soft-start capacitor is reset.The LT3063 features an NMOS pull-down that discharges the output ifSHDNor IN is driven low.Internal protection circuitry includes reverse-battery protection, reverse-current protection, current limit with foldback and thermal shutdown.The LT3063 is available in fixed output voltages of 3.3V and 5V, and as an adjustable device with an output voltage range from the 600mV reference up to 19V. The LT3063 is offered in the thermally enhanced 8-lead 2mm × 3mm DFN and MSOP packages.ApplicationsBattery Powered SystemsAutomotive Power SuppliesIndustrial Power SuppliesAvionic Power SuppliesPortable InstrumentsMedical Instruments |
LT3065 Series45V VIN, 500mA Low Noise, Linear Regulator with Programmable Current Limit and Power Good | Development Boards, Kits, Programmers | 40 | Active | The LT3065 Series are micropower, low noise, low dropout voltage (LDO) linear regulators that operate over a 1.6V to 45V input voltage range. The devices supply 500mA of output current with a typical dropout voltage of 300mV. A single external capacitor provides programmable low noise reference performance and output soft-start functionality.A single external resistor programs the LT3065’s current limit, accurate to ±10% over a wide input voltage and temperature range. A PWRGD flag indicates output regulation.The LT3065 optimizes stability and transient response with low ESR ceramic capacitors, requiring a minimum of 3.3µF. Internal protection circuitry includes current limiting with foldback, thermal limiting, reverse battery protection, reverse current protection and reverse output protection.The LT3065 is available in fixed output voltages of 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V, and as an adjustable device with an output voltage range from 0.6V to 40V. The LT3065 is available in the thermally-enhanced 10-lead 3mm × 3mm DFN and 12-lead MSOP packages.APPLICATIONSBattery-Powered SystemsAutomotive Power SuppliesIndustrial Power SuppliesAvionic Power SuppliesPortable Instruments |
LT306645V VIN, 500mA Low Noise, Linear Regulator with Programmable Current Limit and Active Output Discharge | PMIC | 16 | Active | The LT3066 series are micropower, low noise, low dropout voltage (LDO) linear regulators that operate over a 1.8V to 45V input voltage range. The devices supply 500mA of output current with a typical dropout voltage of 300mV. A single external capacitor provides programmable low noise reference performance and output soft-start functionality.A single external resistor programs the LT3066’s current limit, accurate to ±10% over a wide input voltage and temperature range. A PWRGD flag indicates output regulation.The LT3066 features an NMOS pull-down that discharges the output ifSHDNor IN is driven low.The LT3066 optimizes stability and transient response with low ESR ceramic capacitors, requiring a minimum of 3.3μF. Internal protection circuitry includes current limiting with foldback, thermal limiting, reverse battery protection, reverse current protection and reverse output protection.The LT3066 is available in fixed output voltages of 3.3V and 5V, and as an adjustable device with an output voltage range from 0.6V to 19V. The device is offered in the thermally-enhanced 12-lead 4mm × 3mm DFN and MSOP packages.ApplicationsBattery-Powered SystemsAutomotive Power SuppliesIndustrial Power SuppliesAvionic Power SuppliesPortable Instruments |
LT3070-15A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator | PMIC | 4 | Active | The LT3070-1 is a low voltage, Ultrafast™transient response linear regulator. The device supplies up to 5A of output current with a typical dropout voltage of 85mV. A 0.01μF reference bypass capacitor decreases output voltage noise to 25μVRMS. The LT3070-1 EN pin controls the reference soft-start behavior in comparison to theLT3070which controls the reference soft-start via the BIAS pin supply voltage. The LT3070-1’s high bandwidth permits the use of low ESR ceramic capacitors, saving bulk capacitance and cost. The LT3070-1’s features make it ideal for high performance FPGAs, microprocessors or sensitive communication supply applications.Output voltage is digitally selectable in 50mV increments over a 0.8V to 1.8V range. A margining function allows the user to adjust system output voltage in increments of ±1%, ±3% or ±5%. The IC incorporates a unique tracking function to control a buck regulator powering the LT3070-1’s input. This tracking function drives the buck regulator to maintain the LT3070-1’s input voltage to VOUT+ 300mV, minimizing power dissipation.Internal protection includes UVLO, reverse-current protection, precision current limiting with power foldback and thermal shutdown. The LT3070-1 regulator is available in a thermally enhanced 28-lead, 4mm × 5mm QFN package.APPLICATIONSFPGA and DSP SuppliesASIC and Microprocessor SuppliesServers and Storage DevicesPost Buck Regulation and Supply Isolation |
LT30715A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator with Analog Margining | Power Management (PMIC) | 3 | Active | The LT3071 is a low voltage, UltraFast™transient response linear regulator. The device supplies up to 5A of output current with a typical dropout voltage of 85mV. A 0.01μF reference bypass capacitor decreases output voltage noise to 25μVRMS. The LT3071’s high bandwidth permits the use of low ESR ceramic capacitors, saving bulk capacitance and cost. The LT3071’s features make it ideal for high performance FPGAs, microprocessors or sensitive communication supply applications.Output voltage is digitally selectable in 50mV increments over a 0.8V to 1.8V range. An analog margining function allows the user to adjust system output voltage over a continuous ±10% range. The IC incorporates a unique tracking function to control a buck regulator powering the LT3071’s input. This tracking function drives the buck regulator to maintain the LT3071’s input voltage to VOUT+ 300mV, minimizing power dissipation.Internal protection includes UVLO, reverse-current protection, precision current limiting with power foldback and thermal shutdown. The LT3071 regulator is available in a thermally enhanced 28-lead, 4mm × 5mm QFN package.APPLICATIONSFPGA and DSP SuppliesASIC and Microprocessor SuppliesServers and Storage DevicesPost Buck Regulation and Supply Isolation |
LT3072Dual, Low Noise, 2.5A Programmable Output, 80mV Low Dropout Linear Regulator | Voltage Regulators - Linear, Low Drop Out (LDO) Regulators | 2 | Active | The LT3072 is a low voltage, UltraFast™transient response, dual channel linear regulator. The device supplies up to 2.5A per channel with a typical dropout voltage of 80mV. A 0.1µF reference bypass capacitor decreases output voltage noise to 12µVRMS. The wide bandwidth and high PSRR permit the use of small ceramic capacitors, saving bulk capacitance and cost. The LT3072 is ideal for high performance FPGAs, microprocessors and sensitive RF communication supply applications.Independent output voltages are digitally selectable in 50mV increments from 0.6V to 1.2V and in 100mV increments from 1.2V to 2.5V. Output current monitors provide diagnostics and program the precision current limit. The LT3072 incorporates a unique tracking feature (VIOC) to control the upstream buck regulator(s) powering the inputs. VIOC adaptively servos the buck regulator to maintain the LT3072 input-to-output voltage differential to 300mV at maximum load and 450mV at light load, minimizing power dissipation with less input capacitance. Internal protection circuitry includes UVLO, OVLO, reverse-current protection, current limiting and thermal shutdown. The LT3072 is available in a low profile (0.75mm) 36-lead 4mm × 7mm QFN package.ApplicationsFPGA, DSP and Microprocessor Power SuppliesLow Noise RF Power SuppliesHigh-Speed Servers and Storage DevicesPost Buck Regulation and Supply Isolation |
LT30733A, Ultra-Low Noise, High PSRR, 45mV Dropout Ultra-Fast Linear Regulator | PMIC | 1 | Active | The LT3073 is a low voltage, ultra-low noise, and ultra-fast transient response linear regulator. The device supplies up to 3A with a typical dropout voltage of 45mV. A 4.7μF reference bypass capacitor decreases output voltage noise to 1.2μVRMS. The wide bandwidth and high PSRR permit the use of small ceramic capacitors, saving bulk capacitance and cost. The LT3073 is ideal for powering high-performance FPGAs, data converters, RF, and noise-sensitive signal chain applications.The output voltage is digitally selectable in 50mV increments from 0.5V to 1.2V, 100mV increments from 1.2V to 1.8V, and discrete levels at 2V, 2.5V, 3V, 3.3V, and 4.2V. The LT3073’s unity-gain operation provides virtually constant output noise, PSRR, bandwidth, and load regulation independent of the programmed output voltage. In addition, the LT3073 incorporates a unique tracking feature (VIOC) to control the upstream switching regulator to maintain a constant voltage across the LT3073 and minimize power dissipation.A precision current monitor provides power monitoring for system energy management, while precision current limiting allows users to minimize input power supply size and cost. Built-in protection includes UVLO, internal current limit, and thermal shutdown with hysteresis. The LT3073 is available in a compact 22-lead (3mm X 4mm) LQFN package (Laminate package with QFN footprint).APPLICATIONSRF Power Supplies: PLLs, VCOs, Mixers, LNAs, PAsHigh Speed/High Precision Data ConvertersLow Noise InstrumentationPost-Regulator for Switching SuppliesFPGA and DSP Power SuppliesMedical Applications |
LT30785.5V, 5A, Ultra-Low Noise, High PSRR, 55mV Dropout Ultra-Fast Linear Regulator | Integrated Circuits (ICs) | 2 | Active | The LT3078 is a low voltage, ultra-low noise, high power-supply rejection ratio (PSRR), and ultra-fast transient response linear regulator. The device supplies up to 5A with a typical dropout voltage of 55mV. A 4.7μF reference bypass capacitor decreases output voltage noise to 1.3μVRMS (10Hz to 100kHz). The wide bandwidth and high PSRR deliver the best performance without the need of bulky capacitors, which save space and cost. The LT3078 is ideal for powering high-performance FPGAs, data converters, RF, and all noise-sensitive signal chain applications.The output voltage is digitally selectable in 50mV increments from 0.5V to 1.2V, 100mV increments from 1.2V to 1.8V, and discrete levels at 2V, 2.5V, 3V, 3.3V, and 4.2V. The LT3078’s unity-gain operation provides virtually constant output noise, PSRR, and bandwidth independent of the programmed output voltage. In addition, the LT3078 incorporates a unique tracking feature (VIOC) to control the upstream switching regulator to maintain a constant voltage across the LT3078 and minimize power dissipation.A precision current monitor enables system energy management and allows the user to minimize input power-supply size and cost. Built-in protection includes UVLO, internal current limit, and thermal shutdown with hysteresis. The LT3078 is available in a compact 22-lead (3mm X 4mm) LQFN package (Laminate package with QFN footprint).APPLICATIONSRF Power Supplies: PLLs, VCOs, Mixers, LNAs, PAsHigh Speed/High Precision Data ConvertersLow Noise InstrumentationPost-Regulator for Switching SuppliesFPGA and DSP Power SuppliesMedical Applications |
LT3080-1Parallelable 1.1A Adjustable Single Resistor Low Dropout Regulator | Power Management (PMIC) | 12 | Active | The LT3080-1 is a 1.1A low dropout linear regulator that incorporates an internal ballast resistor to allow direct paralleling of devices without the need for PC board trace resistors. The internal ballast resistor allows multiple devices to be paralleled directly on a surface mount board for higher output current and power dissipation while keeping board layout simple and easy. The device brings out the collector of the pass transistor to allow low dropout operation—down to 350mV—when used with multiple input supplies.The LT3080-1 is capable of supplying a wide output voltage range. A reference current through a single resistor programs the output voltage to any level between zero and 36V. The LT3080-1 is stable with 2.2μF of ceramic capacitance on the output, not requiring additional ESR as is common with other regulators.Internal protection includes current limiting and thermal limiting. The LT3080-1 regulator is offered in the 8-lead MSOP (with an Exposed Pad for better thermal characteristics) and 3mm × 3mm DFN packages.FeaturesLT3080-LT3080-1Can parallel without additional external resistanceApplicationsHigh Current All Surface Mount SupplyHigh Efficiency Linear RegulatorPost Regulator for Switching SuppliesLow Parts Count Variable Voltage SupplyLow Output Voltage Power Supplies |
LT30811.5A Single Resistor Rugged Linear Regulator with Monitors | Power Management (PMIC) | 9 | Active | The LT3081 is a 1.5A low dropout linear regulator designed for rugged industrial applications. Key features of the IC are the extended safe operating area (SOA), output current monitor, temperature monitor and programmable current limit. The LT3081 can be paralleled for higher output current or heat spreading. The device withstands reverse input and reverse output-to-input voltages without reverse current flow.The LT3081’s precision 50μA reference current source allows a single resistor to program output voltage to any level between zero and 34.5V. The current reference architecture makes load regulation independent of output voltage. The LT3081 is stable with or without input and output capacitors.The output current monitor (IOUT/5000) and die junction temperature output (1μA/°C) provide system monitoring and debug capability. In addition, a single resistor programs current limit.Internal protection circuitry includes reverse-battery and reverse-current protection, current limiting and thermal limiting. The LT3081 is offered in the 16-lead TSSOP (with exposed pad for improved thermal performance), 7-lead TO-220, 7-lead DD-Pak, and an 12-lead 4mm × 4mm DFN.ApplicationsAll Surface Mount Power SupplyRugged Industrial Power SupplyPost Regulator for Switching SuppliesLow Output Voltage SupplyIntrinsic Safety Applications |
