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Analog Devices LT3074 | Demoboard EVAL-LT3074
Evaluating the LT3074 3A, Ultralow Noise, High PSRR, 45mV Dropout Ultrafast Linear Regulator with PMBus
Overview
| Topology | Buck Converter |
| Input voltage | 0.6-5.5 V |
| Output 1 | 1.2 V / 3 A |
Description
The EVAL-LT3074-AZ evaluation board features the LT3074, a 3A, ultralow noise, high power-supply rejection ratio (PSRR), 45mV dropout ultrafast linear regulator with PMBus capability. The input voltage (VIN) range for the VIN power is from 0.6V to 5.5V. The maximum output current is 3A. The output voltage is precisely programmed to 1.20V by two 1% resistors in series. The EVAL-LT3074-AZ requires a BIAS voltage (VBIAS) that is at least 1.2V higher than VOUT and is between 2.375V and 5.5V. There is a jumper (JP4), which gives an option to connect the BIAS pin to either an external bias voltage or the internal 3.3V logic power from the PMBus interface (discussed later in this section). The EVAL-LT3074-AZ can operate standalone without PMBus programming.
Features
- Input voltage range: 0.6V to 5.5V
- BIAS voltage range: 2.375V to 5.5V
- Maximum output current: 3A
- I2C/PMBus communication
- Jumper selects bias mode of either external bias voltage or 3.3V internal logic power from the PMBus interface
- Output voltage is precisely programmed to 1.20V by two 1%m resistors in series
- BNC connectors for noise and PSRR measurement
- Component placeholder can connect the PGFB pin directly to BIASAF to keep PG high
- Operates standalone without PMBus programming
- Jumper turns regulator on or off
- Jumper enables or disables the internal clocks of LT3074 for noise performance verification
- Jumper and resistor combinations select the serial bus interface address
- Stacking connectors allow PMBus communication to multiple EVAL-LT3074-AZ
- 6-pin 0.1 inch pitch connector implements Pmod Type 6 I2C
- LED indication of POWER ON, POWER GOOD and PMBus ALERT
- Terminals provide output current and output regulation status monitoring
- The VIOC pin of the LT3074 manages power dissipation and PSRR
- Banana jacks minimize VIN and VOUT connection voltage drops
- VO+, VO−, and VI+ terminals for regulation and dropout monitoring
- Component footprint for an SMA connector that allows a shielded VIN power connection
- 22-lead (3mm x 4mm) LQFN package
Typical applications
- High Speed/High Precision Data Converters,
- RF Power Supplies: PLLs, VCOs, Mixers, FPGA and DSP Power Supplies
- Medical Applications
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | f(mm) | λDom typ.(nm) | Emitting Color | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chip Technology | 2θ50% typ.(°) | Pins | Type | Mount | L(mm) | H(mm) | IR(A) | Working Voltage(V (AC)) | Operating Temperature | SamplesAvailability & Sample | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | SPECWL-SMCW SMT Mono-color Chip LED Waterclear, –, 630 nm | Availability – | Downloads27 files RAY files
| Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | – | Dominant Wavelength [typ.]630 nm | Emitting ColorSuper Red | Peak Wavelength [typ.]645 nm | Luminous Intensity [typ.]60 mcd | Forward Voltage [typ.]1.9 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]140 ° | – | – | MountSMT | Length1.6 mm | Height0.7 mm | – | – | Operating Temperature -40 °C up to +85 °C | –Check availability | ||
| SPECWL-SMCW SMT Mono-color Chip LED Waterclear, –, 525 nm | Availability – | Downloads27 files RAY files
| Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | – | Dominant Wavelength [typ.]525 nm | Emitting ColorGreen | Peak Wavelength [typ.]515 nm | Luminous Intensity [typ.]430 mcd | Forward Voltage [typ.]3.2 V | Chip TechnologyInGaN | Viewing Angle Phi 0° [typ.]140 ° | – | – | MountSMT | Length1.6 mm | Height0.7 mm | – | – | Operating Temperature -40 °C up to +85 °C | –Check availability | ||
 | SPECWA-SNSR Self-Retaining Spacer, 4.8 mm, – | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWA-SNSR Self-Retaining Spacer | Drilling in Panel4.8 mm | – | – | – | – | – | – | – | – | – | – | Length12.7 mm | – | – | – | Operating Temperature -30 °C up to +85 °C | –Check availability | ||
 | SPECWR-PHD Jumper, –, – | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Jumper | – | – | – | – | – | – | – | – | Pins2 | – | – | – | – | Rated Current3 A | Working Voltage200 V (AC) | Operating Temperature -25 °C up to +105 °C | –Check availability | ||
 | SPECWR-PHD Pin Header - Single, –, – PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | – | – | – | – | – | – | – | Pins6 | TypeStraight | MountTHT | Length15.24 mm | – | Rated Current3 A | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | –Check availability | ||
 | SPECWR-PHD Pin Header, –, – | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | – | – | – | – | – | – | – | Pins3 | TypeStraight | MountTHT | Length6 mm | – | Rated Current2 A | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C | –Check availability |
Availability Forecast
WE item number Packaging unitsLead time
––– weeks
| Expected Availability | Opening inventory | Quantity |
|---|---|---|
| Current Availability | – | – |
There is no forecast for this quantity request.
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