Datasheet LT3002 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | 36V 10W No-Opto Isolated Flyback Converter |
| 页数 / 页 | 12 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| 文件格式/大小 | PDF / 811 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Switching Frequency. Output Load and Line Regulation
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LT3002
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Switching Frequency Output Load and Line Regulation Output Temperature Variation vs Load Current
5.20 5.3 500 FRONT PAGE APPLICATION FRONT PAGE APPLICATION 5.15 VIN = 12V 5.2 IOUT = 1A 400 5.10 5.1 5.05 R 300 TC = 115k 5.00 5.0 RTC = OPEN 200 4.95 4.9 FREQUENCY (kHz) OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 4.90 100 VIN = 5V 4.8 VIN = 5V 4.85 V V IN = 12V IN = 12V V V IN = 24V IN = 24V 4.80 4.7 0 0 0.5 1.0 1.5 2.0 2.5 3.0 –50 –25 0 25 50 75 100 125 150 0 0.5 1.0 1.5 2.0 2.5 3.0 LOAD CURRENT (A) TEMPERATURE (°C) LOAD CURRENT (A) 3002 G01 3002 G02 3002 G03
Boundary Mode Waveforms Discontinuous Mode Waveforms Burst Mode Waveforms
VSW V 20V/DIV SW 20V/DIV VSW 20V/DIV V V OUT OUT VOUT 50mV/DIV 50mV/DIV 50mV/DIV 2µs/DIV 3002 G04 2µs/DIV 3002 G05 20µs/DIV 3002 G06 FRONT PAGE APPLICATION FRONT PAGE APPLICATION FRONT PAGE APPLICATION VIN = 12V VIN = 12V VIN = 12V IOUT = 2A IOUT = 0.5A IOUT = 10mA
EN/UVLO Enable Threshold RREF Regulation Voltage Switch Current Limit
1.240 1.010 5 1.235 1.008 RISING 1.006 4 MAXIMUM CURRENT LIMIT 1.230 1.004 1.225 (V) 1.002 3 (V) 1.220 1.000 (A) FALLING V RREF I SW V EN/UVLO 1.215 0.998 2 0.996 1.210 0.994 1 MINIMUM CURRENT LIMIT 1.205 0.992 1.200 0.990 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3002 G09 3002 G07 3002 G08 Rev. 0 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Operation Applications Information Package Description
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Switching Frequency Output Load and Line Regulation Output Temperature Variation vs Load Current
5.20 5.3 500 FRONT PAGE APPLICATION FRONT PAGE APPLICATION 5.15 VIN = 12V 5.2 IOUT = 1A 400 5.10 5.1 5.05 R 300 TC = 115k 5.00 5.0 RTC = OPEN 200 4.95 4.9 FREQUENCY (kHz) OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 4.90 100 VIN = 5V 4.8 VIN = 5V 4.85 V V IN = 12V IN = 12V V V IN = 24V IN = 24V 4.80 4.7 0 0 0.5 1.0 1.5 2.0 2.5 3.0 –50 –25 0 25 50 75 100 125 150 0 0.5 1.0 1.5 2.0 2.5 3.0 LOAD CURRENT (A) TEMPERATURE (°C) LOAD CURRENT (A) 3002 G01 3002 G02 3002 G03
Boundary Mode Waveforms Discontinuous Mode Waveforms Burst Mode Waveforms
VSW V 20V/DIV SW 20V/DIV VSW 20V/DIV V V OUT OUT VOUT 50mV/DIV 50mV/DIV 50mV/DIV 2µs/DIV 3002 G04 2µs/DIV 3002 G05 20µs/DIV 3002 G06 FRONT PAGE APPLICATION FRONT PAGE APPLICATION FRONT PAGE APPLICATION VIN = 12V VIN = 12V VIN = 12V IOUT = 2A IOUT = 0.5A IOUT = 10mA
EN/UVLO Enable Threshold RREF Regulation Voltage Switch Current Limit
1.240 1.010 5 1.235 1.008 RISING 1.006 4 MAXIMUM CURRENT LIMIT 1.230 1.004 1.225 (V) 1.002 3 (V) 1.220 1.000 (A) FALLING V RREF I SW V EN/UVLO 1.215 0.998 2 0.996 1.210 0.994 1 MINIMUM CURRENT LIMIT 1.205 0.992 1.200 0.990 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3002 G09 3002 G07 3002 G08 Rev. 0 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Operation Applications Information Package Description