Analog Devices LT3074 | Demoboard EVAL-LT3074

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

More information

• Datasheet
• IC product information