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ADI Power by Linear LT3042 | 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 revision1

Description

DC2246A is a linear regulator featuring the LT®3042EDD,which is a 200mA, ultralow noise, and ultrahigh powersupply rejection ratio (PSRR) RF low dropout (LDO) linearregulator with programmable current limit.DC2246A operates over an input range of 3.8V to 20V.The LT3042 has a maximum output current of 200mA. Itfeatures ultralow noise (0.8µVrms from 10Hz to 100kHz)and very high PSRR (79dB at 1MHz). The power goodfeedback (PGFB) pin voltage is programmable for powergoodthreshold. A currentlimitfunctionisprovided. CurrentmonitoringisalsoachievablebysensingthevoltageofILIM.Built-in protection includes reverse battery protection,reverse current protection, internal current limit withfoldback and thermal limit with hysteresis.The LT3042 data sheet gives a complete description of thedevice, operation and applications information. The datasheet must be read in conjunction with this Demo Manualfor demonstration circuit DC2246A. The LT3042EDD isassembled in a 10-lead (3mm x 3mm) plastic DFN packagewith an exposed pad on the bottom-side of the IC.Proper board layout is essential for maximum thermalperformance and ultrahigh PSRR.Design files for this circuit board are available athttp://www.linear.com/demo/DC2246A

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