Datasheet ADP2443 (Analog Devices) - 10
| Fabricante | Analog Devices |
| Descripción | 3 A, 36 V, Synchronous Step-Down DC-to-DC Regulator |
| Páginas / Página | 24 / 10 — ADP2443. Data Sheet. 5.10. 620. 5.05. 610. 5.00. E (. 600. Y (k. 4.95. N … |
| Formato / tamaño de archivo | PDF / 689 Kb |
| Idioma del documento | Inglés |
ADP2443. Data Sheet. 5.10. 620. 5.05. 610. 5.00. E (. 600. Y (k. 4.95. N E. 590. EQ R. 4.90. T = 280kΩ. 580. 4.85. 4.80. 570. –40. –20. 100. 120. TEMPERATURE (°C). 140
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ADP2443 Data Sheet 5.10 620 5.05 610 V) 5.00 z) E ( H G 600 A Y (k T C L 4.95 N E VO U G 590 E EQ R R VR 4.90 F T = 280kΩ 580 4.85 4.80 570 –40 –20 0 20 40 60 80 100 120
17 20 0
–40 –20 0 20 40 60 80 100 120
0 4- 4-
TEMPERATURE (°C)
479
TEMPERATURE (°C)
479 1 1 Figure 17. VREG Voltage vs. Temperature Figure 20. Frequency vs. Temperature
140 6.0 120 5.5 ) A) Ω D ( L (m 100 R HO 5.0 O T S S 80 HRE ESI T 4.5 R IT N 60 IM O L ET NT 4.0 SF 40 MO CURRE 3.5 20 RDSON_HS RDSON_LS 0
8
3.0 –40 –20 0 20 40 60 80 100 120
21 -01
–40 –20 0 20 40 60 80 100 120
0 4-
TEMPERATURE (°C)
794
TEMPERATURE (°C)
479 14 1 Figure 18. MOSFET On Resistor vs. Temperature Figure 21. Current-Limit Threshold vs. Temperature
V T OUT (AC) T 1 EN 3 IL VOUT SW 1 PGOOD 4 2 IL 2 4 CH1 10.0mV B
019
W CH2 10.0V M2.00µs A CH2 10.0V CH1 2.00V B
-022 4-
W CH2 5.00V BW M2.00ms A CH3 11.2V CH4 1.0A BW T 50.00% CH3 20.0V BW CH4 1.00A BW T 25.30%
1479 14794 Figure 19. Working Mode Waveform Figure 22. Voltage Precharged Output Rev. 0 | Page 10 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
17 20 0
–40 –20 0 20 40 60 80 100 120
0 4- 4-
TEMPERATURE (°C)
479
TEMPERATURE (°C)
479 1 1 Figure 17. VREG Voltage vs. Temperature Figure 20. Frequency vs. Temperature
140 6.0 120 5.5 ) A) Ω D ( L (m 100 R HO 5.0 O T S S 80 HRE ESI T 4.5 R IT N 60 IM O L ET NT 4.0 SF 40 MO CURRE 3.5 20 RDSON_HS RDSON_LS 0
8
3.0 –40 –20 0 20 40 60 80 100 120
21 -01
–40 –20 0 20 40 60 80 100 120
0 4-
TEMPERATURE (°C)
794
TEMPERATURE (°C)
479 14 1 Figure 18. MOSFET On Resistor vs. Temperature Figure 21. Current-Limit Threshold vs. Temperature
V T OUT (AC) T 1 EN 3 IL VOUT SW 1 PGOOD 4 2 IL 2 4 CH1 10.0mV B
019
W CH2 10.0V M2.00µs A CH2 10.0V CH1 2.00V B
-022 4-
W CH2 5.00V BW M2.00ms A CH3 11.2V CH4 1.0A BW T 50.00% CH3 20.0V BW CH4 1.00A BW T 25.30%
1479 14794 Figure 19. Working Mode Waveform Figure 22. Voltage Precharged Output Rev. 0 | Page 10 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