Datasheet LTC3869, LTC3869-2 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | Dual, 2-Phase Synchronous Step-Down DC/DC Controllers |
| Pages / Page | 44 / 10 — pin FuncTions (UF/UFD/GN). SW1, SW2 (Pin 23, Pin 13/Pin 24, Pin 14/Pin … |
| File Format / Size | PDF / 687 Kb |
| Document Language | English |
pin FuncTions (UF/UFD/GN). SW1, SW2 (Pin 23, Pin 13/Pin 24, Pin 14/Pin 26, Pin
Model Line for this Datasheet
Text Version of Document
LTC3869/LTC3869-2
pin FuncTions (UF/UFD/GN) SW1, SW2 (Pin 23, Pin 13/Pin 24, Pin 14/Pin 26, Pin BG1, BG2 (Pin 20, Pin 17/Pin 21, Pin 18/Pin 23, Pin 16):
Switch Node Connections to Inductors. Voltage swing
20):
Bottom Gate Driver Outputs. These pins drive the at these pins is from a Schottky diode (external) voltage gates of the bottom N-channel MOSFETs between PGND drop below ground to VIN. and INTVCC.
SENSE1+, SENSE2+ (Pin 27, Pin 8/Pin 28, Pin 9/Pin 2, INTVCC (Pin 18/Pin 19/Pin 21):
Internal 5V Regulator
Pin 12):
Current Sense Comparator Inputs. The (+) inputs Output. The control circuits are powered from this voltage. to the current comparators are normally connected to DCR Decouple this pin to PGND with a minimum of 4.7µF low sensing networks or current sensing resistors. ESR tantalum or ceramic capacitor. It is not recommended
SENSE1–, SENSE2– (Pin 28, Pin 7/Pin 1, Pin 8/Pin 3,
to power other applications with this power source.
Pin 11):
Current Sense Comparator Inputs. The (–) inputs
PGOOD (Pin 12/Pin 13/Pin 15):
Power Good Indicator to the current comparators are connected to the outputs. Output. Open drain logic out that is pulled to ground when
PGND (Pin 16/Pin 17/Pin 19):
Power Ground Pin. Connect either channel output exceeds ±10% regulation windows, this pin closely to the sources of the bottom N-channel after the internal 20µs power bad mask timer expires. MOSFETs, the (–) terminal of CVCC and the (–) terminal of CIN. 38692fb 10 For more information www.linear.com/LTC3869 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
pin FuncTions (UF/UFD/GN) SW1, SW2 (Pin 23, Pin 13/Pin 24, Pin 14/Pin 26, Pin BG1, BG2 (Pin 20, Pin 17/Pin 21, Pin 18/Pin 23, Pin 16):
Switch Node Connections to Inductors. Voltage swing
20):
Bottom Gate Driver Outputs. These pins drive the at these pins is from a Schottky diode (external) voltage gates of the bottom N-channel MOSFETs between PGND drop below ground to VIN. and INTVCC.
SENSE1+, SENSE2+ (Pin 27, Pin 8/Pin 28, Pin 9/Pin 2, INTVCC (Pin 18/Pin 19/Pin 21):
Internal 5V Regulator
Pin 12):
Current Sense Comparator Inputs. The (+) inputs Output. The control circuits are powered from this voltage. to the current comparators are normally connected to DCR Decouple this pin to PGND with a minimum of 4.7µF low sensing networks or current sensing resistors. ESR tantalum or ceramic capacitor. It is not recommended
SENSE1–, SENSE2– (Pin 28, Pin 7/Pin 1, Pin 8/Pin 3,
to power other applications with this power source.
Pin 11):
Current Sense Comparator Inputs. The (–) inputs
PGOOD (Pin 12/Pin 13/Pin 15):
Power Good Indicator to the current comparators are connected to the outputs. Output. Open drain logic out that is pulled to ground when
PGND (Pin 16/Pin 17/Pin 19):
Power Ground Pin. Connect either channel output exceeds ±10% regulation windows, this pin closely to the sources of the bottom N-channel after the internal 20µs power bad mask timer expires. MOSFETs, the (–) terminal of CVCC and the (–) terminal of CIN. 38692fb 10 For more information www.linear.com/LTC3869 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
