Datasheet ADP2443 (Analog Devices) - 9
| Hersteller | Analog Devices |
| Beschreibung | 3 A, 36 V, Synchronous Step-Down DC-to-DC Regulator |
| Seiten / Seite | 24 / 9 — Data Sheet. ADP2443. 1000. 950. 900. 850. CURRE. N CURRE W. 800. HUT. J = … |
| Dateiformat / Größe | PDF / 689 Kb |
| Dokumentensprache | Englisch |
Data Sheet. ADP2443. 1000. 950. 900. 850. CURRE. N CURRE W. 800. HUT. J = +125°C. TJ = +125°C. TJ = +25°C. 750. TJ = –40°C. 700. INPUT VOLTAGE (V). 4.5
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Data Sheet ADP2443 60 1000 50 950 A) A) µ µ ( ( 40 900 NT NT 30 850 CURRE N CURRE W NT DO CE 20 S 800 E HUT UI S T Q J = +125°C TJ = +125°C 10 TJ = +25°C 750 TJ = +25°C TJ = –40°C TJ = –40°C 0
1
700
1
12 16 20 24 28 32 36
0
12 16 20 24 28 32 36
014
INPUT VOLTAGE (V)
14794-
INPUT VOLTAGE (V)
14794- Figure 11. Shutdown Current vs. Input Voltage (VPVIN) Figure 14. Quiescent Current vs. Input Voltage (VPVIN)
4.5 1.25 4.4 1.20 4.3 (V) D ) L V 1.15 O 4.2 D ( L ESH R HO H 4.1 S 1.10 T O HRE VL 4.0 U N T 1.05 RISING N E FALLING 3.9 PVI RISING FALLING 1.00 3.8 3.7 0.95 –40 –20 0 20 40 60 80 100 120
012
–40 –20 0 20 40 60 80 100 120
015
TEMPERATURE (°C)
14794-
TEMPERATURE (°C)
14794- Figure 12. PVIN UVLO Threshold vs. Temperature Figure 15. EN Threshold vs. Temperature
606 3.60 3.55 604 ) A) 3.50 mV µ ( ( 602 E NT 3.45 AG T L O 600 3.40 CURRE -UP L 3.35 598 DBACK V UL E P E S F 3.30 S 596 3.25 594 3.20 –40 –20 0 20 40 60 80 100 120
013
–40 –20 0 20 40 60 80 100 120
016
TEMPERATURE (°C)
14794-
TEMPERATURE (°C)
14794- Figure 13. Feedback Voltage vs. Temperature Figure 16. SS Pin Pull-Up Current vs. Temperature Rev. 0 | Page 9 of 24 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION REVISION HISTORY FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS 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 INPUT VOLTAGE UVLO SLOPE COMPENSATION SETTING COMPENSATION DESIGN ADIsimPOWER DESIGN TOOL DESIGN EXAMPLE OUTPUT VOLTAGE SETTING FREQUENCY SETTING INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION SLOPE COMPENSATION SETTING COMPENSATION COMPONENTS SOFT START TIME PROGRAM INPUT CAPACITOR SELECTION RECOMMENDED EXTERNAL COMPONENTS PRINTED CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATIONS CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE
1
700
1
12 16 20 24 28 32 36
0
12 16 20 24 28 32 36
014
INPUT VOLTAGE (V)
14794-
INPUT VOLTAGE (V)
14794- Figure 11. Shutdown Current vs. Input Voltage (VPVIN) Figure 14. Quiescent Current vs. Input Voltage (VPVIN)
4.5 1.25 4.4 1.20 4.3 (V) D ) L V 1.15 O 4.2 D ( L ESH R HO H 4.1 S 1.10 T O HRE VL 4.0 U N T 1.05 RISING N E FALLING 3.9 PVI RISING FALLING 1.00 3.8 3.7 0.95 –40 –20 0 20 40 60 80 100 120
012
–40 –20 0 20 40 60 80 100 120
015
TEMPERATURE (°C)
14794-
TEMPERATURE (°C)
14794- Figure 12. PVIN UVLO Threshold vs. Temperature Figure 15. EN Threshold vs. Temperature
606 3.60 3.55 604 ) A) 3.50 mV µ ( ( 602 E NT 3.45 AG T L O 600 3.40 CURRE -UP L 3.35 598 DBACK V UL E P E S F 3.30 S 596 3.25 594 3.20 –40 –20 0 20 40 60 80 100 120
013
–40 –20 0 20 40 60 80 100 120
016
TEMPERATURE (°C)
14794-
TEMPERATURE (°C)
14794- Figure 13. Feedback Voltage vs. Temperature Figure 16. SS Pin Pull-Up Current vs. Temperature Rev. 0 | Page 9 of 24 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION REVISION HISTORY FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS 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 INPUT VOLTAGE UVLO SLOPE COMPENSATION SETTING COMPENSATION DESIGN ADIsimPOWER DESIGN TOOL DESIGN EXAMPLE OUTPUT VOLTAGE SETTING FREQUENCY SETTING INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION SLOPE COMPENSATION SETTING COMPENSATION COMPONENTS SOFT START TIME PROGRAM INPUT CAPACITOR SELECTION RECOMMENDED EXTERNAL COMPONENTS PRINTED CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATIONS CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE