Datasheet ADP2302, ADP2303 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 3A, 700KHz NonSynchronous Step-Down DC-DC Switching Regulator |
| 页数 / 页 | 28 / 3 — Data Sheet. ADP2302/ADP2303. SPECIFICATIONS. Table 1. Parameters Symbol. … |
| 修订版 | A |
| 文件格式/大小 | PDF / 1.0 Mb |
| 文件语言 | 英语 |
Data Sheet. ADP2302/ADP2303. SPECIFICATIONS. Table 1. Parameters Symbol. Test. Conditions. Min. Typ. Max. Unit
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Data Sheet ADP2302/ADP2303 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. Parameters Symbol Test Conditions Min Typ Max Unit
VIN Voltage Range VIN 3.0 20 V Supply Current IVIN No switching, VIN = 12 V 720 950 μA Shutdown Current ISHDN VEN = 0 V, VIN = 12 V 24 45 μA Undervoltage Lockout Threshold UVLO VIN rising 2.7 2.9 V VIN falling 2.2 2.4 V FB Regulation Voltage VFB ADP230xARDZ (adjustable) 0.788 0.8 0.812 V ADP230xARDZ-2.5 2.463 2.5 2.538 V ADP230xARDZ-3.3 3.25 3.3 3.35 V ADP230xARDZ-5.0 4.925 5.0 5.075 V Bias Current IFB ADP230xARDZ (adjustable) 0.01 0.1 μA SW On Resistance1 VBST − VSW = 5 V, ISW = 200 mA 80 120 160 mΩ Peak Current Limit ADP2302, VBST − VSW = 5 V 2.7 3.5 4.4 A ADP2303, VBST − VSW = 5 V 4.6 5.5 6.4 A Leakage Current VEN = VSW = 0 V, VIN = 12 V 0.1 5 μA Minimum On Time 126 170 ns Minimum Off Time 210 280 ns OSCILLATOR FREQUENCY fSW 595 700 805 kHz SOFT START TIME 2048 Clock cycles EN Input Threshold VEN 1.12 1.2 1.28 V Input Hysteresis 100 mV Pull-Down Current 1.2 μA BOOTSTRAP VOLTAGE VBOOT VIN = 12 V 4.7 5.0 5.3 V PGOOD PGOOD Rising Threshold 82.5 87.5 92.5 % PGOOD Hysteresis 2.5 % PGOOD Deglitch Time2 32 Clock cycles PGOOD Output Low Voltage 150 300 mV PGOOD Leakage Current VPGOOD = 5 V 0.1 1 μA THERMAL SHUTDOWN Threshold Rising temperature 150 °C Hysteresis 15 °C 1 Pin-to-Pin measurements. 2 Guaranteed by design. Rev. A | 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 (TSD) Overvoltage Protection (OVP) Power Good Control Loop Applications Information ADIsimPower Design Tool Programming Output Voltage Voltage Conversion Limitations Low Input Voltage Considerations Programming the Precision Enable Inductor Catch Diode Input Capacitor Output Capacitor Thermal Consideration Design Example 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 ADP2302/ADP2303 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. Parameters Symbol Test Conditions Min Typ Max Unit
VIN Voltage Range VIN 3.0 20 V Supply Current IVIN No switching, VIN = 12 V 720 950 μA Shutdown Current ISHDN VEN = 0 V, VIN = 12 V 24 45 μA Undervoltage Lockout Threshold UVLO VIN rising 2.7 2.9 V VIN falling 2.2 2.4 V FB Regulation Voltage VFB ADP230xARDZ (adjustable) 0.788 0.8 0.812 V ADP230xARDZ-2.5 2.463 2.5 2.538 V ADP230xARDZ-3.3 3.25 3.3 3.35 V ADP230xARDZ-5.0 4.925 5.0 5.075 V Bias Current IFB ADP230xARDZ (adjustable) 0.01 0.1 μA SW On Resistance1 VBST − VSW = 5 V, ISW = 200 mA 80 120 160 mΩ Peak Current Limit ADP2302, VBST − VSW = 5 V 2.7 3.5 4.4 A ADP2303, VBST − VSW = 5 V 4.6 5.5 6.4 A Leakage Current VEN = VSW = 0 V, VIN = 12 V 0.1 5 μA Minimum On Time 126 170 ns Minimum Off Time 210 280 ns OSCILLATOR FREQUENCY fSW 595 700 805 kHz SOFT START TIME 2048 Clock cycles EN Input Threshold VEN 1.12 1.2 1.28 V Input Hysteresis 100 mV Pull-Down Current 1.2 μA BOOTSTRAP VOLTAGE VBOOT VIN = 12 V 4.7 5.0 5.3 V PGOOD PGOOD Rising Threshold 82.5 87.5 92.5 % PGOOD Hysteresis 2.5 % PGOOD Deglitch Time2 32 Clock cycles PGOOD Output Low Voltage 150 300 mV PGOOD Leakage Current VPGOOD = 5 V 0.1 1 μA THERMAL SHUTDOWN Threshold Rising temperature 150 °C Hysteresis 15 °C 1 Pin-to-Pin measurements. 2 Guaranteed by design. Rev. A | 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 (TSD) Overvoltage Protection (OVP) Power Good Control Loop Applications Information ADIsimPower Design Tool Programming Output Voltage Voltage Conversion Limitations Low Input Voltage Considerations Programming the Precision Enable Inductor Catch Diode Input Capacitor Output Capacitor Thermal Consideration Design Example Catch Diode Selection Inductor Selection Output Capacitor Selection Resistive Voltage Divider Selection Circuit Board Layout Recommendations Typical Application Circuits Outline Dimensions Ordering Guide