Datasheet LTC3619 (Analog Devices) - 7

LTC3619
pin FuncTions (DD/MSE) VFB1 (Pin 1/Pin 1):
Regulator 1 Output Feedback. Receives
SW2 (Pin 7/Pin 7):
Regulator 2 Switch Node Connection the feedback voltage from the external resistive divider to the Inductor. This pin swings from VIN to GND. across the regulator 1 output. Nominal voltage for this pin is 0.6V.
PGOOD2 (Pin 8/Pin 8):
Open-Drain Logic Output. PGOOD2 is pulled to ground the voltage on the VFB2 pin is not within
RUN1 (Pin 2/Pin 2):
Regulator 1 Enable. Forcing this pin power good threshold. to VIN enables regulator 1, while forcing it to GND causes regulator 1 to shut down.
RUN2 (Pin 9/Pin 9):
Regulator 2 Enable. Forcing this pin to VIN enables regulator 2, while forcing it to GND causes
RLIM (Pin 3/Pin 3):
Average Input Current Limit Program regulator 2 to shut down. Pin. Place a resistor and capacitor in parallel from this pin to ground.
VFB2 (Pin 10/Pin 10):
Regulator 2 Output Feedback. Receives the feedback voltage from the external resistive
PGOOD1 (Pin 4/Pin 4):
Open-Drain Logic Output. PGOOD1 divider across the regulator 2 output. Nominal voltage for is pulled to ground the voltage on the VFB1 pin is not within this pin is 0.6V. power good threshold.
GND (Pin 11/Pin 11):
Ground. Bottom Exposed Pad. Con-
SW1 (Pin 5/Pin 5):
Regulator 1 Switch Node Connection nect to the (–) terminal of C to the Inductor. This pin swings from V OUT, and the (–) terminal of IN to GND. CIN. The Exposed Pad must be soldered to PCB.
VIN (Pin 6/Pin 6):
Main Power Supply. Must be closely de-coupled to GND. 3619fa 7 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Functional Diagram Operation Applications Information Package Description Typical Application Related Parts