NCP731ADNADJR2GEVB: LDO Regulator (38V, 150mA, Low Noise 8uVRMS , Adjustable, MSOP-8 package) Evaluation Board

NCP731ADNADJR2GEVB evaluation board serves for quick evaluation of NCP731 part in MSOP-8
package. Board is assembled by adjustable part version and it is compatible with all fixed device
versions as well. The output voltage of the adjustable LDO is set by variable resistor (RT1) in two
ranges set by jumpers (JP2, JP3). Board configuration is described at the schematic document.
For proper device operation the input and output capacitors are already populated on the board
(10uF used) and additional capacitors could be assembled to their spare places.

All power and control signals lead to soldering pads for easy connection. Input, output and ground
signals are doubled, one of each is for power connection (force) and one for measure connection
(sense). For enable pin control there is a jumper component which can set EN pin high, low or connected to external source.

From thermal point view, the board is composed of 2 Cu layers, 1oz thick and all layers contain 650mm2 ground cooling areas (top layer has slightly less area because of SMD components). These cooling areas are surrounded by non-Cu ring which isolates the heat at the cooling areas from the other board parts. There are also three rectifying diodes spare places which could behave as on-board temperature sensors (not assembled on default).
Next to this, there are three spare place for SMB connectors for input, output and EN signals.

Evaluation/Development Tool Information
Product Status Compliance Short Description Parts Used Action
LDO Regulator (38V, 150mA, Low Noise 8uVRMS , Adjustable, MSOP-8 package) Evaluation Board NCP731ADNADJR2G
Technical Documents
Type Document Title Document ID/Size Rev
Eval Board: Gerber NCP731ADNADJR2GEVB Gerber Layout Files (Zip Format) - 83 KB  0 
Eval Board: BOM NCP731ADNADJR2GEVB Bill of Materials (ROHS Compliant) NCP731ADNADJR2GEVB_BOM.ROHS - 201 KB  0 
Eval Board: Schematic NCP731ADNADJR2GEVB Schematic NCP731ADNADJR2GEVB_SCHEMATIC - 626 KB  0 
Eval Board: Test Procedure NCP731ADNADJR2GEVB Test Procedure NCP731ADNADJR2GEVB_TESTING_PROCEDURE - 401 KB  0 
Eval Board: Gerber NCP731ADNADJR2GEVB Gerber Layout Files (Zip Format) NCP731ADNADJR2GEVB__GERBER - 83 KB  0 
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