Datasheet ADP2390 (Analog Devices) - 9
| Fabricante | Analog Devices |
| Descripción | 18 V, 12 A Step-Down Regulator with Programmable Current Limit and PFM |
| Páginas / Página | 23 / 9 — Data Sheet. ADP2389/ADP2390. 4.5. 1.25. 4.4. RISING. 1.20. 4.3. V) LD (. … |
| Formato / tamaño de archivo | PDF / 786 Kb |
| Idioma del documento | Inglés |
Data Sheet. ADP2389/ADP2390. 4.5. 1.25. 4.4. RISING. 1.20. 4.3. V) LD (. 4.2. V) 1.15. SHO. LD (. 4.1. FALLING. HRE. SHO 1.10. 4.0. 3.9. 1.05. EN T. VIN UV. 3.8
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Data Sheet ADP2389/ADP2390 4.5 1.25 4.4 RISING 1.20 4.3 V) LD ( 4.2 RISING V) 1.15 SHO LD ( 4.1 FALLING HRE SHO 1.10 T 4.0 LO HRE 3.9 1.05 EN T VIN UV 3.8 FALLING 1.00 3.7 3.6 0.95 –40 –20 0 20 40 60 80 100 120
110
–40 –20 0 20 40 60 80 100 120
014
TEMPERATURE (°C)
12192-
TEMPERATURE (°C)
12192- Figure 11. VIN UVLO Threshold vs. Temperature Figure 14. EN Threshold vs. Temperature
3.55 606 3.50 604 ) (µA) 3.45 NT E (mV 602 LTAG 3.40 CURRE O 600 L-UP UL 3.35 598 SS P FEEDBACK V 3.30 596 3.25 594 –40 –20 0 20 40 60 80 100 120
012
–40 –20 0 20 40 60 80 100 120
015
TEMPERATURE (°C)
12192-
TEMPERATURE (°C)
12192- Figure 12. SS Pin Pull-Up Current vs. Temperature Figure 15. Feedback Voltage vs. Temperature
620 5.3 RT = 100kΩ 610 5.2 ) 5.1 600 (kHz E (V) G NCY LTA 5.0 UE Q 590 VO EG FRE 4.9 VR 580 4.8 570 4.7 –40 –20 0 20 40 60 80 100 120
013
–40 –20 0 20 40 60 80 100 120
016
TEMPERATURE (°C)
12192-
TEMPERATURE (°C)
12192- Figure 13. Frequency vs. Temperature Figure 16. VREG Voltage vs. Temperature Rev. 0 | Page 9 of 23 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATIONS CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY DETAILED FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL INFORMATION ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CONTROL SCHEME PFM MODE (ADP2390 ONLY) PRECISION ENABLE/SHUTDOWN INTERNAL REGULATOR (VREG) BOOTSTRAP CIRCUITRY OSCILLATOR SOFT START FAST TRANSIENT RESPONSE 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 INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION PROGRAMMING INPUT VOLTAGE UVLO COMPENSATION DESIGN DESIGN EXAMPLE OUTPUT VOLTAGE SETTING FREQUENCY SETTING INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION COMPENSATION COMPONENTS SOFT START TIME PROGRAM INPUT CAPACITOR SELECTION SCHEMATIC FOR DESIGN EXAMPLE EXTERNAL COMPONENTS RECOMMENDATION CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATION CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE
110
–40 –20 0 20 40 60 80 100 120
014
TEMPERATURE (°C)
12192-
TEMPERATURE (°C)
12192- Figure 11. VIN UVLO Threshold vs. Temperature Figure 14. EN Threshold vs. Temperature
3.55 606 3.50 604 ) (µA) 3.45 NT E (mV 602 LTAG 3.40 CURRE O 600 L-UP UL 3.35 598 SS P FEEDBACK V 3.30 596 3.25 594 –40 –20 0 20 40 60 80 100 120
012
–40 –20 0 20 40 60 80 100 120
015
TEMPERATURE (°C)
12192-
TEMPERATURE (°C)
12192- Figure 12. SS Pin Pull-Up Current vs. Temperature Figure 15. Feedback Voltage vs. Temperature
620 5.3 RT = 100kΩ 610 5.2 ) 5.1 600 (kHz E (V) G NCY LTA 5.0 UE Q 590 VO EG FRE 4.9 VR 580 4.8 570 4.7 –40 –20 0 20 40 60 80 100 120
013
–40 –20 0 20 40 60 80 100 120
016
TEMPERATURE (°C)
12192-
TEMPERATURE (°C)
12192- Figure 13. Frequency vs. Temperature Figure 16. VREG Voltage vs. Temperature Rev. 0 | Page 9 of 23 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATIONS CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY DETAILED FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL INFORMATION ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CONTROL SCHEME PFM MODE (ADP2390 ONLY) PRECISION ENABLE/SHUTDOWN INTERNAL REGULATOR (VREG) BOOTSTRAP CIRCUITRY OSCILLATOR SOFT START FAST TRANSIENT RESPONSE 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 INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION PROGRAMMING INPUT VOLTAGE UVLO COMPENSATION DESIGN DESIGN EXAMPLE OUTPUT VOLTAGE SETTING FREQUENCY SETTING INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION COMPENSATION COMPONENTS SOFT START TIME PROGRAM INPUT CAPACITOR SELECTION SCHEMATIC FOR DESIGN EXAMPLE EXTERNAL COMPONENTS RECOMMENDATION CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATION CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE