What is the difference between ADP1043A and ADP1046A

Question

The package and Pin configuration of ADP1043A and ADP1046 are the same. What is key difference between ADP1043A and ADP1046A?

ADIApproved · Accepted Answer

The ADP1046A is the updated version of ADP1043A. They are pin-to-pin compatible. The improvements of ADP1046A are: 
 Improved control loop with less noise 
 Fast OVP with analog comparator 
 Fast OCP with up to 440 timeout cycles 
 Pre-bias start up function 
 LLC operation 
 SR reverse current protection 
 Improved GO bit 
 Improved CS2 current sense accuracy 
 Output voltage slew rate control 
 Fast ORFET comparator improvements 
 Programmable smooth filter transitioning 
 Improved and more flexible Flag response 
 SR Turn off speed (3 new speed options) 
 Light Load mode hysteresis (programmable hysteresis) 
 Voltage Feed Forward 
 Programmable PGOOD1/2 functions 
 Improved Droop-sharing control 
 Improved constant current sharing function)

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What is the difference between ADP1043A and ADP1046A