ADP2303ARDZ-2.5-R7 Analog Devices Inc, ADP2303ARDZ-2.5-R7 Datasheet - Page 2

• Manufacturer Part Number: ADP2303ARDZ-2.5-R7
• Description: 3A Non-Sync Step Down DC-DC Converter
• Manufacturer: Analog Devices Inc
• Type: Step-Down (Buck), PFM/PWM - Current Moder

Specifications of ADP2303ARDZ-2.5-R7

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 2.5V
• Current - Output: 3A
• Frequency - Switching: 700kHz
• Voltage - Input: 3 V ~ 20 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width) Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ADP2303ARDZ-2.5-R7; ADP2303ARDZ-2.5-R7TR

TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Typical Applications Circuit............................................................ 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 4
Pin Configuration and Function Descriptions............................. 5
Typical Performance Characteristics ............................................. 6
Functional Block Diagram ............................................................ 13
Theory of Operation ...................................................................... 14
REVISION HISTORY
7/10—Revision 0: Initial Version
ADP2302/ADP2303
Thermal Resistance ...................................................................... 4
ESD Caution.................................................................................. 4
Basic Operation .......................................................................... 14
PWM Mode................................................................................. 14
Power Saving Mode.................................................................... 14
Bootstrap Circuitry .................................................................... 14
Precision Enable ......................................................................... 14
Integrated Soft Start ................................................................... 14
Current Limit .............................................................................. 14
Short-Circuit Protection............................................................ 14
Undervoltage Lockout (UVLO) ............................................... 15
Thermal Shutdown (TSD)......................................................... 15
Rev. 0 | Page 2 of 28
Applications Information .............................................................. 16
Design Example .............................................................................. 20
Circuit Board Layout Recommendations ................................... 22
Typical Application Circuits ......................................................... 23
Outline Dimensions ....................................................................... 26
Overvoltage Protection (OVP)................................................. 15
Power Good ................................................................................ 15
Control Loop............................................................................... 15
Programming Output Voltage .................................................. 16
Voltage Conversion Limitations............................................... 16
Low Input Voltage Considerations .......................................... 17
Programming the Precision Enable ......................................... 17
Inductor ....................................................................................... 17
Catch Diode ................................................................................ 18
Input Capacitor........................................................................... 19
Output Capacitor........................................................................ 19
Thermal Consideration ............................................................. 19
Catch Diode Selection ............................................................... 20
Inductor Selection ...................................................................... 20
Output Capacitor Selection....................................................... 20
Resistive Voltage Divider Selection.......................................... 20
Ordering Guide .......................................................................... 26