Datasheet LTC3109 (Analog Devices) - 7

LTC3109
pin FuncTions (DFN/SSOP) C1B (Pin 9/Pin 11):
Input to the Charge Pump and Rectifier
SWA (Pin 15/Pin 17):
Connection to the Internal N-Chan- Circuit for Channel B. Connect a capacitor from this pin nel Switch for Channel A. Connect this pin to the primary to the secondary winding of the “B” step-up transformer. winding of the “A” transformer. See the Applications Information section for recommended
SWB (Pin 12/Pin 14):
Connection to the Internal N-Chan- capacitor values. nel Switch for Channel B. Connect this pin to the primary
C1A (Pin 18/Pin 20):
Input to the Charge Pump and Recti- winding of the “B” transformer. fier Circuit for Channel A. Connect a capacitor from this pin
V
to the secondary winding of the “A” step-up transformer.
INA (Pin 14/Pin 16):
Connection to the Internal N-Channel Switch for Channel A. Connect this pin to one side of the See the Applications Information section for recommended input voltage source (see Typical Applications). capacitor values.
V C2B (Pin 10/Pin 12):
Input to the Gate Drive Circuit for
INB (Pin 13/Pin 15):
Connection to the Internal N-Channel Switch for Channel B. Connect this pin to the other side of SWB. Connect a capacitor from this pin to the secondary the input voltage source (see Typical Applications). winding of the “B” step-up transformer. See the Applications Information section for recommended capacitor values.
C2A (Pin 17/Pin 19):
Input to the Gate Drive Circuit for SWA. Connect a capacitor from this pin to the secondary winding of the “A” step-up transformer. See the Applications Information section for recommended capacitor values. 3109fb For more information www.linear.com/LTC3109 7 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Typical Application Related Parts