Datasheet ADP2384 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | 20 V, 4 A, Synchronous Step-Down DC-to-DC Regulator |
| Pages / Page | 24 / 3 — Data Sheet. ADP2384. SPECIFICATIONS. Table 1. Parameter. Symbol. Test … |
| Revision | A |
| File Format / Size | PDF / 708 Kb |
| Document Language | English |
Data Sheet. ADP2384. SPECIFICATIONS. Table 1. Parameter. Symbol. Test Conditions/Comments. Min. Typ. Max. Unit
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Data Sheet ADP2384 SPECIFICATIONS
VPVIN = 12 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/Comments Min Typ Max Unit
PVIN PVIN Voltage Range VPVIN 4.5 20 V Quiescent Current IQ No switching 2.1 2.9 3.6 mA Shutdown Current ISHDN EN = GND 45 80 120 µA PVIN Undervoltage Lockout Threshold UVLO PVIN rising 4.3 4.5 V PVIN falling 3.5 3.8 V FB FB Regulation Voltage VFB 0°C < TJ < 85°C 0.594 0.6 0.606 V −40°C < TJ < 125°C 0.591 0.6 0.609 V FB Bias Current IFB 0.01 0.1 µA ERROR AMPLIFIER (EA) Transconductance gm 340 470 600 µS EA Source Current ISOURCE 40 60 80 µA EA Sink Current ISINK 40 60 80 µA INTERNAL REGULATOR (VREG) VREG Voltage VVREG VPVIN = 12 V, IVREG = 50 mA 7.6 8 8.4 V Dropout Voltage VPVIN = 12 V, IVREG = 50 mA 340 mV Regulator Current Limit 65 100 135 mA SW High-Side On Resistance1 VBST − VSW = 5 V 44 70 mΩ Low-Side On Resistance1 VVREG = 8 V 11.6 20 mΩ High-Side Peak Current Limit 4.8 6.1 7.4 A Low-Side Negative Current-Limit 20 mV Threshold Voltage2 SW Minimum On Time tMIN_ON 125 168 ns SW Minimum Off Time tMIN_OFF 200 260 ns BST Bootstrap Voltage VBOOT 4.5 5 5.5 V OSCILLATOR (RT PIN) Switching Frequency fSW RT = 100 kΩ 530 600 670 kHz Switching Frequency Range fSW 200 1400 kHz SYNC Synchronization Range 200 1400 kHz SYNC Minimum Pulse Width 100 ns SYNC Minimum Off Time 100 ns SYNC Input High Voltage 1.3 V SYNC Input Low Voltage 0.4 V SS Internal Soft Start 1600 Clock cycles SS Pin Pull-Up Current ISS_UP 2.5 3.2 3.9 µA Rev. A | Page 3 of 24 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATIONS CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS FUNCTIONAL BLOCK DIAGRAM THEORY OF OPERATION CONTROL SCHEME PRECISION ENABLE/SHUTDOWN INTERNAL REGULATOR (VREG) BOOTSTRAP CIRCUITRY OSCILLATOR SYNCHRONIZATION SOFT START POWER GOOD PEAK CURRENT-LIMIT AND SHORT-CIRCUIT PROTECTION OVERVOLTAGE PROTECTION (OVP) UNDERVOLTAGE LOCKOUT (UVLO) THERMAL SHUTDOWN APPLICATIONS INFORMATION INPUT CAPACITOR SELECTION OUTPUT VOLTAGE SETTING VOLTAGE CONVERSION LIMITATIONS INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION PROGRAMMING THE INPUT VOLTAGE UVLO COMPENSATION DESIGN ADIsimPower DESIGN TOOL DESIGN EXAMPLE OUTPUT VOLTAGE SETTING (DESIGN EXAMPLE) FREQUENCY SETTING INDUCTOR SELECTION (DESIGN EXAMPLE) OUTPUT CAPACITOR SELECTION (DESIGN EXAMPLE) COMPENSATION COMPONENTS SOFT START TIME PROGRAM INPUT CAPACITOR SELECTION (DESIGN EXAMPLE) RECOMMENDED EXTERNAL COMPONENTS CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATIONS CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE
Data Sheet ADP2384 SPECIFICATIONS
VPVIN = 12 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/Comments Min Typ Max Unit
PVIN PVIN Voltage Range VPVIN 4.5 20 V Quiescent Current IQ No switching 2.1 2.9 3.6 mA Shutdown Current ISHDN EN = GND 45 80 120 µA PVIN Undervoltage Lockout Threshold UVLO PVIN rising 4.3 4.5 V PVIN falling 3.5 3.8 V FB FB Regulation Voltage VFB 0°C < TJ < 85°C 0.594 0.6 0.606 V −40°C < TJ < 125°C 0.591 0.6 0.609 V FB Bias Current IFB 0.01 0.1 µA ERROR AMPLIFIER (EA) Transconductance gm 340 470 600 µS EA Source Current ISOURCE 40 60 80 µA EA Sink Current ISINK 40 60 80 µA INTERNAL REGULATOR (VREG) VREG Voltage VVREG VPVIN = 12 V, IVREG = 50 mA 7.6 8 8.4 V Dropout Voltage VPVIN = 12 V, IVREG = 50 mA 340 mV Regulator Current Limit 65 100 135 mA SW High-Side On Resistance1 VBST − VSW = 5 V 44 70 mΩ Low-Side On Resistance1 VVREG = 8 V 11.6 20 mΩ High-Side Peak Current Limit 4.8 6.1 7.4 A Low-Side Negative Current-Limit 20 mV Threshold Voltage2 SW Minimum On Time tMIN_ON 125 168 ns SW Minimum Off Time tMIN_OFF 200 260 ns BST Bootstrap Voltage VBOOT 4.5 5 5.5 V OSCILLATOR (RT PIN) Switching Frequency fSW RT = 100 kΩ 530 600 670 kHz Switching Frequency Range fSW 200 1400 kHz SYNC Synchronization Range 200 1400 kHz SYNC Minimum Pulse Width 100 ns SYNC Minimum Off Time 100 ns SYNC Input High Voltage 1.3 V SYNC Input Low Voltage 0.4 V SS Internal Soft Start 1600 Clock cycles SS Pin Pull-Up Current ISS_UP 2.5 3.2 3.9 µA Rev. A | Page 3 of 24 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATIONS CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS FUNCTIONAL BLOCK DIAGRAM THEORY OF OPERATION CONTROL SCHEME PRECISION ENABLE/SHUTDOWN INTERNAL REGULATOR (VREG) BOOTSTRAP CIRCUITRY OSCILLATOR SYNCHRONIZATION SOFT START POWER GOOD PEAK CURRENT-LIMIT AND SHORT-CIRCUIT PROTECTION OVERVOLTAGE PROTECTION (OVP) UNDERVOLTAGE LOCKOUT (UVLO) THERMAL SHUTDOWN APPLICATIONS INFORMATION INPUT CAPACITOR SELECTION OUTPUT VOLTAGE SETTING VOLTAGE CONVERSION LIMITATIONS INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION PROGRAMMING THE INPUT VOLTAGE UVLO COMPENSATION DESIGN ADIsimPower DESIGN TOOL DESIGN EXAMPLE OUTPUT VOLTAGE SETTING (DESIGN EXAMPLE) FREQUENCY SETTING INDUCTOR SELECTION (DESIGN EXAMPLE) OUTPUT CAPACITOR SELECTION (DESIGN EXAMPLE) COMPENSATION COMPONENTS SOFT START TIME PROGRAM INPUT CAPACITOR SELECTION (DESIGN EXAMPLE) RECOMMENDED EXTERNAL COMPONENTS CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATIONS CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE
