Datasheet ADP2325 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Dual 5 A, 20 V Synchronous Step-Down Regulator with Integrated High-Side MOSFET |
| Pages / Page | 32 / 5 — Data Sheet. ADP2325. Parameters. Symbol Test Conditions/Comments. Min. … |
| Revision | A |
| File Format / Size | PDF / 810 Kb |
| Document Language | English |
Data Sheet. ADP2325. Parameters. Symbol Test Conditions/Comments. Min. Typ Max. Unit
Model Line for this Datasheet
Text Version of Document
Data Sheet ADP2325 Parameters Symbol Test Conditions/Comments Min Typ Max Unit
TRACKING INPUT (TRKx PINS) TRKx Input Voltage Range 0 600 mV TRKx-to-FBx Offset Voltage TRKx = 0 mV to 500 mV −12 +12 mV TRKx Input Bias Current 100 nA POWER GOOD (PGOODx PINS) Power-Good Rising Threshold 87 90 93 % Power-Good Hysteresis 5 % Power-Good Deglitch Time From FBx to PGOODx 16 Clock cycles PGOODx Leakage Current V = 5 V 0.1 1 µA PGOOD PGOODx Output Low Voltage I = 1 mA 50 100 mV PGOOD ENABLE (ENx PINS) ENx Rising Threshold 1.2 1.28 V ENx Falling Threshold 1.02 1.1 V ENx Source Current EN voltage below falling 5 µA threshold EN voltage above rising 1 µA threshold MODE (MODE PIN) Input High Voltage 1.3 V Input Low Voltage 0.4 V THERMAL SHUTDOWN Thermal Shutdown Threshold 150 °C Thermal Shutdown Hysteresis 15 °C 1 Tested in a feedback loop that adjusts VFB to achieve a specified voltage on the COMPx pin. 2 Pin-to-pin measurements. 3 Guaranteed by design. Rev. A | Page 5 of 32 Document Outline Features Applications Typical Application Circuit General Description Revision History Functional Block Diagram Specifications Absolute Maximum Ratings Thermal Resistance Boundary Condition ESD Caution 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 Coincident Tracking Ratiometric Tracking Parallel Operation Power Good Overvoltage Protection Undervoltage Lockout Thermal Shutdown Applications Information ADIsimPower Design Tool Input Capacitor Selection Output Voltage Setting Voltage Conversion Limitations Current-Limit Setting Inductor Selection Output Capacitor Selection Low-Side Power Device Selection Programming the UVLO Input Compensation Components Design Design Example Output Voltage Setting Current-Limit Setting Frequency Setting Inductor Selection Output Capacitor Selection Low-Side MOSFET Selection Compensation Components Soft Start Time Programming Input Capacitor Selection External Components Recommendations Typical Application Circuits Packaging and Ordering Information Outline Dimensions Ordering Guide
TRACKING INPUT (TRKx PINS) TRKx Input Voltage Range 0 600 mV TRKx-to-FBx Offset Voltage TRKx = 0 mV to 500 mV −12 +12 mV TRKx Input Bias Current 100 nA POWER GOOD (PGOODx PINS) Power-Good Rising Threshold 87 90 93 % Power-Good Hysteresis 5 % Power-Good Deglitch Time From FBx to PGOODx 16 Clock cycles PGOODx Leakage Current V = 5 V 0.1 1 µA PGOOD PGOODx Output Low Voltage I = 1 mA 50 100 mV PGOOD ENABLE (ENx PINS) ENx Rising Threshold 1.2 1.28 V ENx Falling Threshold 1.02 1.1 V ENx Source Current EN voltage below falling 5 µA threshold EN voltage above rising 1 µA threshold MODE (MODE PIN) Input High Voltage 1.3 V Input Low Voltage 0.4 V THERMAL SHUTDOWN Thermal Shutdown Threshold 150 °C Thermal Shutdown Hysteresis 15 °C 1 Tested in a feedback loop that adjusts VFB to achieve a specified voltage on the COMPx pin. 2 Pin-to-pin measurements. 3 Guaranteed by design. Rev. A | Page 5 of 32 Document Outline Features Applications Typical Application Circuit General Description Revision History Functional Block Diagram Specifications Absolute Maximum Ratings Thermal Resistance Boundary Condition ESD Caution 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 Coincident Tracking Ratiometric Tracking Parallel Operation Power Good Overvoltage Protection Undervoltage Lockout Thermal Shutdown Applications Information ADIsimPower Design Tool Input Capacitor Selection Output Voltage Setting Voltage Conversion Limitations Current-Limit Setting Inductor Selection Output Capacitor Selection Low-Side Power Device Selection Programming the UVLO Input Compensation Components Design Design Example Output Voltage Setting Current-Limit Setting Frequency Setting Inductor Selection Output Capacitor Selection Low-Side MOSFET Selection Compensation Components Soft Start Time Programming Input Capacitor Selection External Components Recommendations Typical Application Circuits Packaging and Ordering Information Outline Dimensions Ordering Guide
