Analog Devices LT3074 | Demoboard EVAL-LT3074 | Würth Elektronik Reference Design Search

reference designLT3074 | Demoboard EVAL-LT3074

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

More information

Products

Order Code	Datasheet	Downloads	Status	Product series
150060SS75000	–	–	Active i\| Production is active. Expected lifetime: >10 years.	WL-SMCW SMT Mono-color Chip LED Waterclear
150060GS75000	–	–	Active i\| Production is active. Expected lifetime: >10 years.	WL-SMCW SMT Mono-color Chip LED Waterclear
702935000	–	–	Active i\| Production is active. Expected lifetime: >10 years.	WA-SNSR Self-Retaining Spacer
60800213421	–	–	Active i\| Production is active. Expected lifetime: >10 years.	WR-PHD 2.00 mm Jumper with Test Point
61300611121	SPEC PCN pending Due 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. SPEC Datasheet PCN PCN document	–	Active i\| Production is active. Expected lifetime: >10 years.	WR-PHD 2.54 mm THT Pin Header
62000311121	–	–	Active i\| Production is active. Expected lifetime: >10 years.	WR-PHD 2.00 mm THT Pin Header

	Order Code	Datasheet
	150060SS75000	–
	150060GS75000	–
	702935000	–
	60800213421	–
	61300611121	SPEC PCN pending Due 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. SPEC Datasheet PCN PCN document
	62000311121	–

Samples

	Order Code	Datasheet	Downloads	Status	Product series	Samples

IC manufacturers (103)

Analog Devices LT3074 | Demoboard EVAL-LT3074

Evaluating the LT3074 3A, Ultralow Noise, High PSRR, 45mV Dropout Ultrafast Linear Regulator with PMBus