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ADI Power by Linear LT3042EDD | Demoboard DC2246A

20V, 200mA, Ultralow Noise Ultrahigh PSRR RF LDO Regulator

Overview

TopologyBoost Converter
Input voltage6-20 V
Output 10.2 A
Output 25 V / 0.2 A
Output 33.3 V / 0.8 A
IC revision2

Description

DC2246A is a linear regulator featuring the LT®3042EDD, which is a 200mA, ultralow noise, and ultrahigh power supply rejection ratio (PSRR) RF low dropout (LDO) linear regulator with programmable current limit.

DC2246A operates over an input range of 3.8V to 20V. The LT3042 has a maximum output current of 200mA. It features ultralow noise (0.8μVrms from 10Hz to 100kHz) and very high PSRR (79dB at 1MHz). The power good feedback (PGFB) pin voltage is programmable for power good threshold. A current limit function is provided. Current monitoring is also achievable by sensing the voltage of ILIM.

Built-in protection includes reverse battery protection, reverse current protection, internal current limit with foldback and thermal limit with hysteresis.

The LT3042 data sheet gives a complete description of the device, operation and applications information. The data sheet must be read in conjunction with this Demo Manual for demonstration circuit DC2246A. The LT3042EDD is assembled in a 10-lead (3mm x 3mm) plastic DFN package with an exposed pad on the bottom-side of the IC. Proper board layout is essential for maximum thermal performance and ultrahigh PSRR.

Products

Order Code Data­sheet Downloads Product seriesL
(mm)
PinsRowsGenderTypeIR
(A)
Packaging Samples
62000311121
IGE STE 3D ALT EAG CADWR-PHD 2.00 mm THT Pin Header 6 3 Single Pin Header Straight 2 Bag
62000621121
IGE STE 3D ALT EAG CADWR-PHD 2.00 mm THT Dual Pin Header 6 6 Dual Pin Header Straight 2 Bag
702935000
STE 3D IGSWA-SNSR Self-Retaining Spacer 12.7
60800213421
IGE STE 3DWR-PHD 2.00 mm Jumper with Test Point 2 Jumper 1 Bag
Samples
Order Code Data­sheet Downloads Product seriesL
(mm)
PinsRowsGenderTypeIR
(A)
Packaging Samples