### Incorrect schematic symbols for LT3028

Posted:

**30 Mar 2013, 09:34**I've just started trying out DipTrace (freeware 2-layer) by trying to recapture some existing schematics. I believe I've found an error in one of the first schematic symbols I pulled up, which is for an LT3028 dual LDO. The same pinouts were used in DipTrace for two different packages (TSSOP-16 and DHC-16) even though these are supposed to be different.

I don't see a better forum to post library errors on, so if this is the wrong spot please direct me to the right one.

The DipTrace library has the following pin assignments for LT3028EFE, LT3028IFE, LT3028IDHC, and LT3028EDHC:

1: BYP1

2: NC

3: OUT1

4: OUT1

5: GND

6: OUT2

7: OUT2

8: BYP2

9: ADJ2

10: SHDN2

11: IN2

12: IN2

13: IN1

14: IN1

15: SHDN1

16: ADJ1

17 (pad): GND

This appears to be correct for the LT3028IDHC and LT3028EDHC. However, according to the datasheet (http://cds.linear.com/docs/en/datasheet/3028f.pdf) the pinouts for the TSSOP-16 package (LT3028EFE and LT3028IFE) are:

1: GND

2: BYP1

3: OUT1

4: OUT1

5: GND

6: OUT2

7: BYP2

8: GND

9: GND

10: ADJ2

11: SHDN2

12: IN1

13: IN1

14: SHDN1

15: ADJ1

16: GND

17 (pad): GND

To aid the comparison, here are the schematic symbols shown in DipTrace and the corresponding diagrams in the datasheet: What is the proper way to document library errors like this?

I don't see a better forum to post library errors on, so if this is the wrong spot please direct me to the right one.

The DipTrace library has the following pin assignments for LT3028EFE, LT3028IFE, LT3028IDHC, and LT3028EDHC:

1: BYP1

2: NC

3: OUT1

4: OUT1

5: GND

6: OUT2

7: OUT2

8: BYP2

9: ADJ2

10: SHDN2

11: IN2

12: IN2

13: IN1

14: IN1

15: SHDN1

16: ADJ1

17 (pad): GND

This appears to be correct for the LT3028IDHC and LT3028EDHC. However, according to the datasheet (http://cds.linear.com/docs/en/datasheet/3028f.pdf) the pinouts for the TSSOP-16 package (LT3028EFE and LT3028IFE) are:

1: GND

2: BYP1

3: OUT1

4: OUT1

5: GND

6: OUT2

7: BYP2

8: GND

9: GND

10: ADJ2

11: SHDN2

12: IN1

13: IN1

14: SHDN1

15: ADJ1

16: GND

17 (pad): GND

To aid the comparison, here are the schematic symbols shown in DipTrace and the corresponding diagrams in the datasheet: What is the proper way to document library errors like this?