LT3045 output error

Question

Hi, 
 The LT3045 used in my product output abnormal. 
 The 16 pieces of LT3045 was used in my product, which convert the +4.2V to +3.3V. The 16 pieces of LT3094 was used in my product, which convert the -4.2V to -3.3V.. The LT3045 and LT3094 supply power to 128 pieces of AD8336. 
 
 The 11 pieces of LT3045 output -0.58V when -4.2V power was supplied first. The other 5 pieces of LT3045 was normal and output +3.3V. The voltage of &ldquo;SET&rdquo; pin was -0.52V. This error will continue to exist even if +4.2V has been powered on. 
 All the 16 pieces of LT3045 output 3.3V when +4.2V power was supplied first. 
 The 16 pieces of LT3094 is always normal。

ARad · Accepted Answer

Add the Schottky as I indicated in my last post's image. I am not sure why the behavior is not consistent. Part to part behavior may be a little different for this condition. The LT3094 does not require Schottky diodes since its output can be pulled up above ground with no problem.)

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LT3045 output error

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