ZHCSD59F June 2012 – November 2017 LM34926
PRODUCTION DATA.
Diode D2 is an optional diode connected between VOUT1 and the VCC regulator output pin. When VOUT1 is more than one diode drop greater than the VCC voltage, the VCC bias current is supplied from VOUT1. This results in reduced power losses in the internal VCC regulator which improves converter efficiency. VOUT1 must be set to a voltage at least one diode drop higher than 8.55 V (the maximum VCC voltage) if D2 is used to supply bias current.