Datasheet LT8390 (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | 60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum |
| Pages / Page | 32 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| File Format / Size | PDF / 1.2 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency vs Load Current. (Buck Region)
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LT8390
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency vs Load Current Efficiency vs Load Current Efficiency vs Load Current (Buck Region) (Buck-Boost Region) (Boost Region)
100 100 100 90 90 90 80 80 80 70 70 70 EFFICIENCY (%) 60 EFFICIENCY (%) 60 EFFICIENCY (%) 60 50 50 50 FRONT PAGE APPLICATION FRONT PAGE APPLICATION FRONT PAGE APPLICATION VIN = 24V, VOUT = 12V, fSW = 400kHz V V 40 IN = 12V, VOUT = 12V, fSW = 400kHz IN = 5V, VOUT = 12V, fSW = 400kHz 40 40 0 0.5 1 1.5 2 2.5 3 3.5 4 0 0.5 1 1.5 2 2.5 3 3.5 4 0 0.5 1 1.5 2 2.5 3 3.5 4 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 8390 G01 8390 G02 8390 G03
Switching Waveforms Switching Waveforms Switching Waveforms (Buck Region) (Buck-Boost Region) (Boost Region)
VSW1 VSW1 VSW1 10V/DIV 10V/DIV 10V/DIV VSW2 VSW2 VSW2 10V/DIV 10V/DIV 10V/DIV IL IL IL 2A/DIV 2A/DIV 2A/DIV VOUT VOUT VOUT 500mV/DIV 500mV/DIV 500mV/DIV 1µs/DIV 8390 G04 1µs/DIV 8390 G05 1µs/DIV 8390 G06 FRONT PAGE APPLICATION FRONT PAGE APPLICATION FRONT PAGE APPLICATION VIN = 18V, IOUT = 3A VIN = 12V, IOUT = 3A VIN = 8V, IOUT = 3A
VOUT vs IOUT (CV/CC) VIN Shutdown Current VIN Quiescent Current
14 3.0 2.8 12 2.5 2.6 10 2.0 VIN = 60V V 2.4 TAGE (V) 8 IN = 60V V (µA) 1.5 (mA) IN = 12V 6 I Q I Q VIN = 12V 2.2 1.0 V OUTPUT VOL 4 IN = 4V 2.0 2 0.5 VIN = 4V 0 0.0 1.8 0 1 2 3 4 5 6 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 LOAD CURRENT (A) TEMPERATURE (°C) TEMPERATURE (°C) 8390 G07 8390 G08 8390 G09 8390fa 6 For more information www.linear.com/LT8390 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency vs Load Current Efficiency vs Load Current Efficiency vs Load Current (Buck Region) (Buck-Boost Region) (Boost Region)
100 100 100 90 90 90 80 80 80 70 70 70 EFFICIENCY (%) 60 EFFICIENCY (%) 60 EFFICIENCY (%) 60 50 50 50 FRONT PAGE APPLICATION FRONT PAGE APPLICATION FRONT PAGE APPLICATION VIN = 24V, VOUT = 12V, fSW = 400kHz V V 40 IN = 12V, VOUT = 12V, fSW = 400kHz IN = 5V, VOUT = 12V, fSW = 400kHz 40 40 0 0.5 1 1.5 2 2.5 3 3.5 4 0 0.5 1 1.5 2 2.5 3 3.5 4 0 0.5 1 1.5 2 2.5 3 3.5 4 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 8390 G01 8390 G02 8390 G03
Switching Waveforms Switching Waveforms Switching Waveforms (Buck Region) (Buck-Boost Region) (Boost Region)
VSW1 VSW1 VSW1 10V/DIV 10V/DIV 10V/DIV VSW2 VSW2 VSW2 10V/DIV 10V/DIV 10V/DIV IL IL IL 2A/DIV 2A/DIV 2A/DIV VOUT VOUT VOUT 500mV/DIV 500mV/DIV 500mV/DIV 1µs/DIV 8390 G04 1µs/DIV 8390 G05 1µs/DIV 8390 G06 FRONT PAGE APPLICATION FRONT PAGE APPLICATION FRONT PAGE APPLICATION VIN = 18V, IOUT = 3A VIN = 12V, IOUT = 3A VIN = 8V, IOUT = 3A
VOUT vs IOUT (CV/CC) VIN Shutdown Current VIN Quiescent Current
14 3.0 2.8 12 2.5 2.6 10 2.0 VIN = 60V V 2.4 TAGE (V) 8 IN = 60V V (µA) 1.5 (mA) IN = 12V 6 I Q I Q VIN = 12V 2.2 1.0 V OUTPUT VOL 4 IN = 4V 2.0 2 0.5 VIN = 4V 0 0.0 1.8 0 1 2 3 4 5 6 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 LOAD CURRENT (A) TEMPERATURE (°C) TEMPERATURE (°C) 8390 G07 8390 G08 8390 G09 8390fa 6 For more information www.linear.com/LT8390 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
