Datasheet ADP2311 (Analog Devices) - 8
| 制造商 | Analog Devices |
| 描述 | Dual 1 A, 18 V, Synchronous Step-Down Regulator with Fail-Safe Voltage Monitoring |
| 页数 / 页 | 20 / 8 — ADP2311. Data Sheet. TYPICAL PERFORMANCE CHARACTERISTICS. 100. FFI. VOUT … |
| 修订版 | B |
| 文件格式/大小 | PDF / 698 Kb |
| 文件语言 | 英语 |
ADP2311. Data Sheet. TYPICAL PERFORMANCE CHARACTERISTICS. 100. FFI. VOUT = 1V. VOUT = 1.2V. OUT = 1.5V. OUT = 1.8V. OUT = 2.5V. VOUT = 1.8V
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ADP2311 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, VIN = 12 V, VOUT = 3.3 V, L = 22 µH, COUT = 47 µF/X7R/6.3 V, fSW = 300 kHz, unless otherwise noted.
100 100 95 95 90 90 85 85 80 80 ) 75 ) 75 (% (% Y 70 Y 70 C C N N 65 65 IE IE C C 60 60 FFI FFI E 55 E 55 50 VOUT = 1V 50 VOUT = 1.2V VOUT = 1V 45 V 45 OUT = 1.5V VOUT = 1.2V V V 40 OUT = 1.8V OUT = 1.5V V 40 OUT = 2.5V VOUT = 1.8V 35 VOUT = 3.3V 35 VOUT = 2.5V INDUCTOR: XAL6060-223ME VOUT = 5V INDUCTOR: XAL6060-103ME VOUT = 3.3V 30 30 0 0.2 0.4 0.6 0.8 1.0
005
0 0.2 0.4 0.6 0.8 1.0
008
OUTPUT CURRENT (A)
1036- 1036- 1
OUTPUT CURRENT (A)
1 Figure 5. Efficiency vs. Output Current at VIN = 12 V Figure 8. Efficiency vs. Output Current at VIN = 5 V
15 1.30 T T J = –40°C J = –40°C T T 14 J = +25°C J = +25°C T T J = +125°C J = +125°C 1.25 13 (μA) mA) 12 ( 1.20 NT NT 11 10 1.15 CURRE N CURRE W NT 9 CE DO S 1.10 8 E HUT UI S Q 7 1.05 6 5 1.00 4 6 8 10 12 14 16 18 4 6 8 10 12 14 16 18
006 009
V V
1036-
IN (V)
1036-
IN (V)
1 1 Figure 6. Shutdown Current vs. VIN Figure 9. Quiescent Current vs. VIN
4.5 1.30 4.4 1.25 4.3 RISING ) ) V RISING V 4.2 D ( 1.20 D ( L L 4.1 HO HO S S 4.0 1.15 HRE HRE T T 3.9 E O FALLING L 1.10 3.8 UV NABL FALLING E 3.7 1.05 3.6 3.5 1.00 –40 –20 0 20 40 60 80 100 120
007
–40 –20 0 20 40 60 80 100 120
010
TEMPERATURE (°C)
1036-
TEMPERATURE (°C)
1036- 1 1 Figure 7. UVLO Threshold vs. Temperature Figure 10. Enable Threshold vs. Temperature Rev. B | Page 8 of 20 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 Soft Start Peak Current-Limit and Short-Circuit Protection Power-On Reset (POR) TIMER Pin Configuration Power Fail Comparator Voltage Monitor Comparator (VM2) Watchdog Timer Power-Up and Power-Down Sequence Overvoltage Protection (OVP) Undervoltage Lockout (UVLO) Thermal Shutdown Applications Information Input Capacitor Selection Output Voltage Setting Inductor Selection Output Capacitor Selection Application Circuit Outline Dimensions Ordering Guide
TA = 25°C, VIN = 12 V, VOUT = 3.3 V, L = 22 µH, COUT = 47 µF/X7R/6.3 V, fSW = 300 kHz, unless otherwise noted.
100 100 95 95 90 90 85 85 80 80 ) 75 ) 75 (% (% Y 70 Y 70 C C N N 65 65 IE IE C C 60 60 FFI FFI E 55 E 55 50 VOUT = 1V 50 VOUT = 1.2V VOUT = 1V 45 V 45 OUT = 1.5V VOUT = 1.2V V V 40 OUT = 1.8V OUT = 1.5V V 40 OUT = 2.5V VOUT = 1.8V 35 VOUT = 3.3V 35 VOUT = 2.5V INDUCTOR: XAL6060-223ME VOUT = 5V INDUCTOR: XAL6060-103ME VOUT = 3.3V 30 30 0 0.2 0.4 0.6 0.8 1.0
005
0 0.2 0.4 0.6 0.8 1.0
008
OUTPUT CURRENT (A)
1036- 1036- 1
OUTPUT CURRENT (A)
1 Figure 5. Efficiency vs. Output Current at VIN = 12 V Figure 8. Efficiency vs. Output Current at VIN = 5 V
15 1.30 T T J = –40°C J = –40°C T T 14 J = +25°C J = +25°C T T J = +125°C J = +125°C 1.25 13 (μA) mA) 12 ( 1.20 NT NT 11 10 1.15 CURRE N CURRE W NT 9 CE DO S 1.10 8 E HUT UI S Q 7 1.05 6 5 1.00 4 6 8 10 12 14 16 18 4 6 8 10 12 14 16 18
006 009
V V
1036-
IN (V)
1036-
IN (V)
1 1 Figure 6. Shutdown Current vs. VIN Figure 9. Quiescent Current vs. VIN
4.5 1.30 4.4 1.25 4.3 RISING ) ) V RISING V 4.2 D ( 1.20 D ( L L 4.1 HO HO S S 4.0 1.15 HRE HRE T T 3.9 E O FALLING L 1.10 3.8 UV NABL FALLING E 3.7 1.05 3.6 3.5 1.00 –40 –20 0 20 40 60 80 100 120
007
–40 –20 0 20 40 60 80 100 120
010
TEMPERATURE (°C)
1036-
TEMPERATURE (°C)
1036- 1 1 Figure 7. UVLO Threshold vs. Temperature Figure 10. Enable Threshold vs. Temperature Rev. B | Page 8 of 20 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 Soft Start Peak Current-Limit and Short-Circuit Protection Power-On Reset (POR) TIMER Pin Configuration Power Fail Comparator Voltage Monitor Comparator (VM2) Watchdog Timer Power-Up and Power-Down Sequence Overvoltage Protection (OVP) Undervoltage Lockout (UVLO) Thermal Shutdown Applications Information Input Capacitor Selection Output Voltage Setting Inductor Selection Output Capacitor Selection Application Circuit Outline Dimensions Ordering Guide