Datasheet LT8608, LT8608B (Analog Devices) - 7
| 制造商 | Analog Devices |
| 描述 | 42V, 1.5A Synchronous Step-Down Regulator with 2.5µA Quiescent Current |
| 页数 / 页 | 24 / 7 — TYPICAL PERFORMANCE CHARACTERISTICS. Minimum Load to Full Frequency. … |
| 修订版 | E |
| 文件格式/大小 | PDF / 2.8 Mb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. Minimum Load to Full Frequency. (SYNC Float to 1.9V). Soft-Start Tracking. (MSOP Package)
该数据表的模型线
- LT8608BEDC#TRMPBF LT8608BEDC#TRPBF LT8608BHDC#TRMPBF LT8608BHDC#TRPBF LT8608BIDC#TRMPBF LT8608BIDC#TRPBF LT8608EDC#TRMPBF LT8608EDC#TRPBF LT8608EDC#WTRMPBF LT8608EDC#WTRPBF LT8608EMSE#PBF LT8608EMSE#TRPBF LT8608EMSE#WPBF LT8608EMSE#WTRPBF LT8608HDC#TRMPBF LT8608HDC#TRPBF LT8608HDC#WTRMPBF LT8608HDC#WTRPBF LT8608HMSE#PBF LT8608HMSE#TRPBF LT8608HMSE#WPBF LT8608HMSE#WTRPBF LT8608IDC#TRMPBF LT8608IDC#TRPBF LT8608IDC#WTRMPBF LT8608IDC#WTRPBF LT8608IMSE#PBF LT8608IMSE#TRPBF LT8608IMSE#WPBF LT8608IMSE#WTRPBF LT8608JDC#WTRMPBF LT8608JDC#WTRPBF LT8608JMSE#WPBF LT8608JMSE#WTRPBF
文件文字版本
LT8608/LT8608B
TYPICAL PERFORMANCE CHARACTERISTICS Minimum Load to Full Frequency (SYNC Float to 1.9V) Soft-Start Tracking (MSOP Package) Frequency Foldback (MSOP Package) Soft-Start Tracking
125 2500 1.0 L = 2.2µH V 0.9 OUT = 5V 2250 100 RT = 18.2k 2000 0.8 1750 0.7 75 1500 0.6 1250 TAGE (V) 0.5 50 1000 0.4 FB VOL LOAD CURRENT (mA) FREQUENCY (kHz) 750 0.3 25 500 0.2 250 SYNC = 0V OR LT8608 DFN 0.1 R 0 T = 18.2k 0 0 0 5 10 15 20 25 30 35 40 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0 0.1 0.2 0.4 0.5 0.6 0.7 0.8 1.0 1.1 1.2 INPUT VOLTAGE (V) FB VOLTAGE (V) SS VOLTAGE (V) 8608 G19 8608 G21 8608 G20
Steady State Case Temperature Soft-Start Current vs Temperature V Soft Start Current Vs Temperature VIN UVLO Rise vs Load Current (5V (MSOP Package) (5V out) OUT) IN UVLO
2.5 3.25 50 VIN = 6V 2.4 45 VIN = 12V 2.3 3.00 V 40 IN = 36V 2.2 35 2.1 2.75 30 2.0 25 T CURRENT (µA) UVLO (V) AR 1.9 2.50 V IN 20 T-ST 1.8 15 CASE TEMP RISE (°C) SOF 1.7 2.25 10 1.6 5 L = 2.2µH fSW = 2MHz 1.5 2.00 0 –50 –30 –10 10 30 50 70 90 110 130 150 –50 –30 –10 10 30 50 70 90 110 130 150 0.00 0.25 0.50 0.75 1.00 1.25 1.50 TEMPERATURE (°C) TEMPERATURE (°C) IOUT (A) 8608 G22 8608 G23 8608 G24
Steady State Case Temperature Rise vs Load (3.3VOUT) Start-Up Dropout Start–Up Droupout Start-Up Dropout Start-Up Droupout
50 7 7 7 7 V RLOAD = 50Ω RLOAD = 5Ω IN = 12V 45 VIN = 36V 6 6 6 6 40 OUTPUT VOL OUTPUT VOL 35 5 5 5 5 30 4 4 TAGE (V) 4 V TAGE (V) IN 4 25 VIN V T T 3 OUT 3 AGE (V) V 3 OUT 3 AGE (V) 20 15 CASE TEMP RISE (°C) INPUT VOL 2 2 INPUT VOL 2 2 10 1 1 1 1 L = 2.2µH 5 fSW = 2MHz 0 0 0 0 0 0.00 0.25 0.50 0.75 1.00 1.25 1.50 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 IOUT (A) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 8608 G25 8608 G26 8608 027 Rev. E For more information www.analog.com 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Minimum Load to Full Frequency (SYNC Float to 1.9V) Soft-Start Tracking (MSOP Package) Frequency Foldback (MSOP Package) Soft-Start Tracking
125 2500 1.0 L = 2.2µH V 0.9 OUT = 5V 2250 100 RT = 18.2k 2000 0.8 1750 0.7 75 1500 0.6 1250 TAGE (V) 0.5 50 1000 0.4 FB VOL LOAD CURRENT (mA) FREQUENCY (kHz) 750 0.3 25 500 0.2 250 SYNC = 0V OR LT8608 DFN 0.1 R 0 T = 18.2k 0 0 0 5 10 15 20 25 30 35 40 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0 0.1 0.2 0.4 0.5 0.6 0.7 0.8 1.0 1.1 1.2 INPUT VOLTAGE (V) FB VOLTAGE (V) SS VOLTAGE (V) 8608 G19 8608 G21 8608 G20
Steady State Case Temperature Soft-Start Current vs Temperature V Soft Start Current Vs Temperature VIN UVLO Rise vs Load Current (5V (MSOP Package) (5V out) OUT) IN UVLO
2.5 3.25 50 VIN = 6V 2.4 45 VIN = 12V 2.3 3.00 V 40 IN = 36V 2.2 35 2.1 2.75 30 2.0 25 T CURRENT (µA) UVLO (V) AR 1.9 2.50 V IN 20 T-ST 1.8 15 CASE TEMP RISE (°C) SOF 1.7 2.25 10 1.6 5 L = 2.2µH fSW = 2MHz 1.5 2.00 0 –50 –30 –10 10 30 50 70 90 110 130 150 –50 –30 –10 10 30 50 70 90 110 130 150 0.00 0.25 0.50 0.75 1.00 1.25 1.50 TEMPERATURE (°C) TEMPERATURE (°C) IOUT (A) 8608 G22 8608 G23 8608 G24
Steady State Case Temperature Rise vs Load (3.3VOUT) Start-Up Dropout Start–Up Droupout Start-Up Dropout Start-Up Droupout
50 7 7 7 7 V RLOAD = 50Ω RLOAD = 5Ω IN = 12V 45 VIN = 36V 6 6 6 6 40 OUTPUT VOL OUTPUT VOL 35 5 5 5 5 30 4 4 TAGE (V) 4 V TAGE (V) IN 4 25 VIN V T T 3 OUT 3 AGE (V) V 3 OUT 3 AGE (V) 20 15 CASE TEMP RISE (°C) INPUT VOL 2 2 INPUT VOL 2 2 10 1 1 1 1 L = 2.2µH 5 fSW = 2MHz 0 0 0 0 0 0.00 0.25 0.50 0.75 1.00 1.25 1.50 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 IOUT (A) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 8608 G25 8608 G26 8608 027 Rev. E For more information www.analog.com 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts