Datasheet ADP2300, ADP2301 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 1.2 A, 20 V, 1.4 MHz non-synchronous step-down switching regulator |
| 页数 / 页 | 28 / 3 — Data Sheet. ADP2300/ADP2301. SPECIFICATIONS. Table 1. Parameter. Symbol … |
| 修订版 | C |
| 文件格式/大小 | PDF / 616 Kb |
| 文件语言 | 英语 |
Data Sheet. ADP2300/ADP2301. SPECIFICATIONS. Table 1. Parameter. Symbol Test Conditions. Min. Typ. Max. Unit
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Data Sheet ADP2300/ADP2301 SPECIFICATIONS
VIN = 3.3 V, TJ = −40°C to +125°C for minimum/maximum specifications, and TA = 25°C for typical specifications, unless otherwise noted.
Table 1. Parameter Symbol Test Conditions Min Typ Max Unit
VIN Voltage Range V 3 20 V IN Supply Current I No switching, V = 12 V 640 800 µA VIN IN Shutdown Current I V = 0 V, V = 12 V 18 35 µA SHDN EN IN Undervoltage Lockout Threshold UVLO V rising 2.80 2.95 V IN V falling 2.15 2.40 V IN FB Regulation Voltage V T = 0°C to +125°C 0.788 0.800 0.812 V FB J T = −40°C to +125°C 0.784 0.800 0.816 V J Bias Current I 0.01 0.1 µA FB SW On Resistance1 V − V = 5 V, I = 150 mA 440 700 mΩ BST SW SW Peak Current Limit2 V − V = 5 V, V = 12 V 1.5 1.9 2.5 A BST SW IN Minimum On Time 100 135 ns Minimum Off Time ADP2300 145 190 ns ADP2301 70 120 ns OSCILLATOR FREQUENCY ADP2300 0.5 0.7 0.9 MHz ADP2301 1.0 1.4 1.75 MHz SOFT START TIME ADP2300 1460 µs ADP2301 730 µs EN Input Threshold V 1.13 1.2 1.27 V EN Input Hysteresis 100 mV Pull-Down Current 1.2 µA BOOTSTRAP VOLTAGE V No switching, V = 12 V 5.0 V BOOT IN THERMAL SHUTDOWN Threshold 140 °C Hysteresis 15 °C 1 Pin-to-pin measurements. 2 Guaranteed by design. Rev. C | Page 3 of 28 Document Outline Features Applications Typical Applications Circuit General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Functional Block Diagram Theory of Operation Basic Operation PWM Mode Power Saving Mode Bootstrap Circuitry Precision Enable Integrated Soft Start Current Limit Short-Circuit Protection Undervoltage Lockout (UVLO) Thermal Shutdown Control Loop Applications Information ADIsimPower Design Tool Programming the Output Voltage Voltage Conversion Limitations Low Input Voltage Considerations Programming the Precision Enable Inductor Catch Diode Input Capacitor Output Capacitor Thermal Considerations Design Example Switching Frequency Selection Catch Diode Selection Inductor Selection Output Capacitor Selection Resistive Voltage Divider Selection Circuit Board Layout Recommendations Typical Application Circuits Outline Dimensions Ordering Guide
Data Sheet ADP2300/ADP2301 SPECIFICATIONS
VIN = 3.3 V, TJ = −40°C to +125°C for minimum/maximum specifications, and TA = 25°C for typical specifications, unless otherwise noted.
Table 1. Parameter Symbol Test Conditions Min Typ Max Unit
VIN Voltage Range V 3 20 V IN Supply Current I No switching, V = 12 V 640 800 µA VIN IN Shutdown Current I V = 0 V, V = 12 V 18 35 µA SHDN EN IN Undervoltage Lockout Threshold UVLO V rising 2.80 2.95 V IN V falling 2.15 2.40 V IN FB Regulation Voltage V T = 0°C to +125°C 0.788 0.800 0.812 V FB J T = −40°C to +125°C 0.784 0.800 0.816 V J Bias Current I 0.01 0.1 µA FB SW On Resistance1 V − V = 5 V, I = 150 mA 440 700 mΩ BST SW SW Peak Current Limit2 V − V = 5 V, V = 12 V 1.5 1.9 2.5 A BST SW IN Minimum On Time 100 135 ns Minimum Off Time ADP2300 145 190 ns ADP2301 70 120 ns OSCILLATOR FREQUENCY ADP2300 0.5 0.7 0.9 MHz ADP2301 1.0 1.4 1.75 MHz SOFT START TIME ADP2300 1460 µs ADP2301 730 µs EN Input Threshold V 1.13 1.2 1.27 V EN Input Hysteresis 100 mV Pull-Down Current 1.2 µA BOOTSTRAP VOLTAGE V No switching, V = 12 V 5.0 V BOOT IN THERMAL SHUTDOWN Threshold 140 °C Hysteresis 15 °C 1 Pin-to-pin measurements. 2 Guaranteed by design. Rev. C | Page 3 of 28 Document Outline Features Applications Typical Applications Circuit General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Functional Block Diagram Theory of Operation Basic Operation PWM Mode Power Saving Mode Bootstrap Circuitry Precision Enable Integrated Soft Start Current Limit Short-Circuit Protection Undervoltage Lockout (UVLO) Thermal Shutdown Control Loop Applications Information ADIsimPower Design Tool Programming the Output Voltage Voltage Conversion Limitations Low Input Voltage Considerations Programming the Precision Enable Inductor Catch Diode Input Capacitor Output Capacitor Thermal Considerations Design Example Switching Frequency Selection Catch Diode Selection Inductor Selection Output Capacitor Selection Resistive Voltage Divider Selection Circuit Board Layout Recommendations Typical Application Circuits Outline Dimensions Ordering Guide