Datasheet
Table Of Contents
- Features
- Applications
- Typical Application Circuit
- General Description
- Revision History
- Functional Block Diagram
- Specifications
- Absolute Maximum Ratings
- Pin Configuration and Function Descriptions
- Typical Performance Characteristics
- Theory of Operation
- Control Scheme
- PWM Mode
- PFM Mode
- Precision Enable/Shutdown
- Separate Input Voltages
- Internal Regulator (INTVCC)
- Bootstrap Circuitry
- Low-Side Driver
- Oscillator
- Synchronization
- Soft Start
- Peak Current-Limit and Short-Circuit Protection
- Voltage Tracking
- Parallel Operation
- Power Good
- Overvoltage Protection
- Undervoltage Lockout
- Thermal Shutdown
- Applications Information
- Design Example
- External Components Recommendation
- Typical Application Circuits
- Outline Dimensions
ADP2323 Data Sheet
Rev. A | Page 8 of 32
Pin No. Mnemonic Description
23 BST1 Supply Rail for the Gate Drive of Channel 1. Place a 0.1 ยตF capacitor between SW1 and BST1.
24, 25 SW1 Switch Node for Channel 1.
26, 27 PVIN1 Power Input for Channel 1. This pin is the power input for Channel 1 and provides power for the internal
regulator. Connect to the input power source and connect a bypass capacitor between PVIN1 and ground.
28 EN1 Enable Pin for Channel 1. An external resistor divider can be used to set the turn-on threshold. When not
using the enable pin, connect the EN1 pin to PVIN1.
29 TRK1 Tracking Input for Channel 1. To track a master voltage, drive this pin from a voltage divider from the master
voltage. If the tracking function is not used, connect TRK1 to INTVCC.
30 SS1 Soft Start Control for Channel 1. To program the soft start time, connect a capacitor from SS1 to GND.
31 COMP1 Error Amplifier Output for Channel 1. Connect an RC network from COMP1 to GND. Connect COMP1 and
COMP2 together for a parallel application.
32 FB1 Feedback Voltage Sense Input for Channel 1. Connect to a resistor divider from the Channel 1 output voltage,
V
OUT1
.
Exposed Pad Solder the exposed pad to an external GND plane.