Datasheet ADP2325 (Analog Devices) - 10
| Hersteller | Analog Devices |
| Beschreibung | Dual 5 A, 20 V Synchronous Step-Down Regulator with Integrated High-Side MOSFET |
| Seiten / Seite | 32 / 10 — ADP2325. Data Sheet. 3.10. TJ = –40°C. TJ = +25°C. TJ = +125°C. 3.05. … |
| Revision | A |
| Dateiformat / Größe | PDF / 810 Kb |
| Dokumentensprache | Englisch |
ADP2325. Data Sheet. 3.10. TJ = –40°C. TJ = +25°C. TJ = +125°C. 3.05. (μA). mA) (. 3.00. CURRE. 2.95. S 2.90. SHUT. UI Q. 2.85. 2.80. VIN (V). IN (V). 4.5
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ADP2325 Data Sheet 40 3.10 TJ = –40°C TJ = –40°C TJ = +25°C TJ = +25°C TJ = +125°C TJ = +125°C 35 3.05 (μA) mA) ( 30 NT 3.00 NT 25 CURRE 2.95 N CURRE W NT DO CE 20 S 2.90 E SHUT UI Q 15 2.85 10 2.80 4 6 8 10 12 14 16 18 20
1 1
4 6 8 10 12 14 16 18 20
0 014
VIN (V) V
10036-
IN (V)
10036- Figure 11. Shutdown Current vs. VIN Figure 14. Quiescent Current vs. VIN
4.5 1.30 RISING RISING FALLING FALLING 4.4 1.25 4.3 ) ) V V 4.2 D ( D ( 1.20 L L 4.1 HO HO S S 4.0 1.15 HRE HRE T T 3.9 E O L 1.10 3.8 UV NABL E 3.7 1.05 3.6 3.5 1.00 –40 –20 0 20 40 60 80 100 120
012
–40 –20 0 20 40 60 80 100 120
015
TEMPERATURE (°C)
10036-
TEMPERATURE (°C)
10036- Figure 12. UVLO Threshold vs. Temperature Figure 15. EN Threshold vs. Temperature
1.10 5.30 5.25 1.08 5.20 1.06 A) A) 5.15 µ µ ( 1.04 ( 5.10 NT NT 1.02 5.05 1.00 CURRE 5.00 CURRE 4.95 0.98 URCE URCE O O 4.90 0.96 N S N S E 4.85 E 0.94 4.80 0.92 4.75 0.90 4.70 –40 –20 0 20 40 60 80 100 120
013
–40 –20 0 20 40 60 80 100 120
016
TEMPERATURE (°C) TEMPERATURE (°C)
10036- 10036- Figure 13. EN Source Current vs. Temperature at VEN = 1.5 V Figure 16. EN Source Current vs. Temperature at VEN = 1 V Rev. A | Page 10 of 32 Document Outline Features Applications Typical Application Circuit General Description Revision History Functional Block Diagram Specifications Absolute Maximum Ratings Thermal Resistance Boundary Condition ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Control Scheme PWM Mode PFM Mode Precision Enable/Shutdown Separate Input Voltages Internal Regulator (INTVCC) Bootstrap Circuitry Low-Side Driver Oscillator Synchronization Soft Start Peak Current-Limit and Short-Circuit Protection Voltage Tracking Coincident Tracking Ratiometric Tracking Parallel Operation Power Good Overvoltage Protection Undervoltage Lockout Thermal Shutdown Applications Information ADIsimPower Design Tool Input Capacitor Selection Output Voltage Setting Voltage Conversion Limitations Current-Limit Setting Inductor Selection Output Capacitor Selection Low-Side Power Device Selection Programming the UVLO Input Compensation Components Design Design Example Output Voltage Setting Current-Limit Setting Frequency Setting Inductor Selection Output Capacitor Selection Low-Side MOSFET Selection Compensation Components Soft Start Time Programming Input Capacitor Selection External Components Recommendations Typical Application Circuits Packaging and Ordering Information Outline Dimensions Ordering Guide
1 1
4 6 8 10 12 14 16 18 20
0 014
VIN (V) V
10036-
IN (V)
10036- Figure 11. Shutdown Current vs. VIN Figure 14. Quiescent Current vs. VIN
4.5 1.30 RISING RISING FALLING FALLING 4.4 1.25 4.3 ) ) V V 4.2 D ( D ( 1.20 L L 4.1 HO HO S S 4.0 1.15 HRE HRE T T 3.9 E O L 1.10 3.8 UV NABL E 3.7 1.05 3.6 3.5 1.00 –40 –20 0 20 40 60 80 100 120
012
–40 –20 0 20 40 60 80 100 120
015
TEMPERATURE (°C)
10036-
TEMPERATURE (°C)
10036- Figure 12. UVLO Threshold vs. Temperature Figure 15. EN Threshold vs. Temperature
1.10 5.30 5.25 1.08 5.20 1.06 A) A) 5.15 µ µ ( 1.04 ( 5.10 NT NT 1.02 5.05 1.00 CURRE 5.00 CURRE 4.95 0.98 URCE URCE O O 4.90 0.96 N S N S E 4.85 E 0.94 4.80 0.92 4.75 0.90 4.70 –40 –20 0 20 40 60 80 100 120
013
–40 –20 0 20 40 60 80 100 120
016
TEMPERATURE (°C) TEMPERATURE (°C)
10036- 10036- Figure 13. EN Source Current vs. Temperature at VEN = 1.5 V Figure 16. EN Source Current vs. Temperature at VEN = 1 V Rev. A | Page 10 of 32 Document Outline Features Applications Typical Application Circuit General Description Revision History Functional Block Diagram Specifications Absolute Maximum Ratings Thermal Resistance Boundary Condition ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Control Scheme PWM Mode PFM Mode Precision Enable/Shutdown Separate Input Voltages Internal Regulator (INTVCC) Bootstrap Circuitry Low-Side Driver Oscillator Synchronization Soft Start Peak Current-Limit and Short-Circuit Protection Voltage Tracking Coincident Tracking Ratiometric Tracking Parallel Operation Power Good Overvoltage Protection Undervoltage Lockout Thermal Shutdown Applications Information ADIsimPower Design Tool Input Capacitor Selection Output Voltage Setting Voltage Conversion Limitations Current-Limit Setting Inductor Selection Output Capacitor Selection Low-Side Power Device Selection Programming the UVLO Input Compensation Components Design Design Example Output Voltage Setting Current-Limit Setting Frequency Setting Inductor Selection Output Capacitor Selection Low-Side MOSFET Selection Compensation Components Soft Start Time Programming Input Capacitor Selection External Components Recommendations Typical Application Circuits Packaging and Ordering Information Outline Dimensions Ordering Guide