Datasheet LT8711 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | Micropower Synchronous Multitopology Controller with 42V Input Capability |
| 页数 / 页 | 38 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| 修订版 | A |
| 文件格式/大小 | PDF / 1.1 Mb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Maximum Current Limit vs
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LT8711
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Maximum Current Limit vs Maximum Current Limit vs SS Output Voltage Regulation Duty Cycle (CSP–CSN) (CSP–CSN) (VFB_REG)
55 60 805 804 50 48 803 40 802 41 801 (mV) 30 800 34 799 V FB_REG 20 MAX CSP - CSN (mV) MAX CSP – CSN (mV) 798 27 10 797 796 20 0 795 0 10 20 30 40 50 60 70 80 90 100 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2.0 –50 –25 0 25 50 75 100 125 DUTY CYCLE (%) SS (V) TEMPERATURE (°C) 8711 G01 8711 G02 8711 G03
Input Voltage Regulation (EN/FBIN) EN/FBIN Chip Enable Threshold EN/FBIN Active Mode Threshold
1.220 1.05 1.370 1.215 1.04 1.365 1.03 RISING 1.210 1.360 1.02 1.205 1.01 1.355 TAGE (V) 1.200 1.00 1.350 1.195 0.99 FALLING 1.345 EN/FBIN VOL 0.98 1.190 EN/FBIN CHIP ENABLE (V) 1.340 EN/FBIN ACTIVE MODE (V) 0.97 1.185 0.96 1.335 1.180 0.95 1.330 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 8711 G04 8711 G05 8711 G06
Input Voltage Regulation vs FB (EN/FBIN) CSN Bias Current ISN Bias Current
1.6 180 350 VCSP = VCSN = 12V VISP = VISN=12V 1.5 160 300 1.4 140 250 1.3 120 EN/FBIN (V) 200 1.2 100 CSN BIAS CURRENT (µA) ISN BIAS CURRENT (µA) 150 1.1 80 1.0 60 100 0.60 0.65 0.70 0.75 0.80 0.85 0.90 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 FB (V) TEMPERATURE (°C) TEMPERATURE (°C) 8711 G07 8711 G08 8711 G09 Rev A For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Start-Up and Fault Sequence Operation Applications Information Appendix Typical Applications Package Description Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Maximum Current Limit vs Maximum Current Limit vs SS Output Voltage Regulation Duty Cycle (CSP–CSN) (CSP–CSN) (VFB_REG)
55 60 805 804 50 48 803 40 802 41 801 (mV) 30 800 34 799 V FB_REG 20 MAX CSP - CSN (mV) MAX CSP – CSN (mV) 798 27 10 797 796 20 0 795 0 10 20 30 40 50 60 70 80 90 100 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2.0 –50 –25 0 25 50 75 100 125 DUTY CYCLE (%) SS (V) TEMPERATURE (°C) 8711 G01 8711 G02 8711 G03
Input Voltage Regulation (EN/FBIN) EN/FBIN Chip Enable Threshold EN/FBIN Active Mode Threshold
1.220 1.05 1.370 1.215 1.04 1.365 1.03 RISING 1.210 1.360 1.02 1.205 1.01 1.355 TAGE (V) 1.200 1.00 1.350 1.195 0.99 FALLING 1.345 EN/FBIN VOL 0.98 1.190 EN/FBIN CHIP ENABLE (V) 1.340 EN/FBIN ACTIVE MODE (V) 0.97 1.185 0.96 1.335 1.180 0.95 1.330 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 8711 G04 8711 G05 8711 G06
Input Voltage Regulation vs FB (EN/FBIN) CSN Bias Current ISN Bias Current
1.6 180 350 VCSP = VCSN = 12V VISP = VISN=12V 1.5 160 300 1.4 140 250 1.3 120 EN/FBIN (V) 200 1.2 100 CSN BIAS CURRENT (µA) ISN BIAS CURRENT (µA) 150 1.1 80 1.0 60 100 0.60 0.65 0.70 0.75 0.80 0.85 0.90 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 FB (V) TEMPERATURE (°C) TEMPERATURE (°C) 8711 G07 8711 G08 8711 G09 Rev A For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Start-Up and Fault Sequence Operation Applications Information Appendix Typical Applications Package Description Typical Application Related Parts