Datasheet LT8619, LT8619-5 (Analog Devices) - 7
| Производитель | Analog Devices |
| Описание | 60V, 1.2A Synchronous Monolithic Buck Regulator with 6μA Quiescent Current |
| Страниц / Страница | 28 / 7 — TYPICAL PERFORMANCE CHARACTERISTICS. Power Good, Overvoltage. Minimum On … |
| Версия | A |
| Формат / Размер файла | PDF / 1.2 Мб |
| Язык документа | английский |
TYPICAL PERFORMANCE CHARACTERISTICS. Power Good, Overvoltage. Minimum On T. Minimum On-Time. Minimum Off-Time. Power Good, Over
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LT8619/LT8619-5
TYPICAL PERFORMANCE CHARACTERISTICS Power Good, Overvoltage Minimum On T Minimum On-Time Minimum Off-Time Power Good, Over Threshold voltage Threshold
120 180 10.0 VOUT = 3.3V PPG V f FB RISING SW = 2MHz 7.5 100 FORCED CONTINUOUS MODE PPG V 170 5.0 FB FALLING 80 NO LOAD 2.5 OV TAGE THRESHOLD (%) 60 160 0 VOL 0.5A LOAD 0.2A LOAD –2.5 40 MINIMUM ON-TIME (ns) MINIMUM OFF TIME (ns) 150 NO LOAD 0.5A LOAD –5.0 NPG VFB RISING 20 –7.5 NPG VFB FALLING 0 140 POWER GOOD, OVER –10.0 –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) 8619 G19 8619 G20 8619 G21
Power Good Delay IN V UVLO IBIAS vs Load
100 3.0 12 VOUT = 1.6V, NO LOAD VIN = 12V fSW = 700kHz VOUT = 3.3V FORCED CONTINUOUS MODE 10 2.9 FORCED CONTINUOUS MODE 75 Y (µs) V 8 IN RISING 2.8 50 (mA) 6 UVLO (V) 2.7 f I BIAS SW = 2MHz V IN 4 POWER GOOD DELA 25 2.6 VIN FALLING 2 fSW = 700kHz 0 2.5 0 0 20 40 60 80 100 –50 –25 0 25 50 75 100 125 150 0 0.2 0.4 0.6 0.8 1.0 1.2 VFB – VPGTH (mV) TEMPERATURE (°C) LOAD CURRENT (A) 8619 G22 8619 G23 8619 G24
IBIAS vs fSW IBIAS at 700kHz vs Temperature IBIAS I at 2MHz vs Temperature BIAS at 2MHz vs T
10 10 24 VIN = 12V V 1.2A LOAD IN = 12V VIN = 12V VOUT = 3.3V VOUT = 3.3V VOUT = 5V L = 10µH BIAS = V 20 1.2A LOAD BIAS = V 8 8 OUT OUT FORCED CONTINUOUS MODE FORCED CONTINUOUS MODE 1A LOAD FORCED CONTINUOUS MODE 1A LOAD (CONTINUOUS OPERATION (CONTINUOUS OPERATION ABOVE MAX JUNCTION 16 ABOVE MAX JUNCTION 6 6 TEMPERATURE MAY TEMPERATURE MAY PERMANENTLY PERMANENTLY 1A LOAD (mA) (mA) DAMAGE THE (mA) 12 DAMAGE THE NO LOAD DEVICE) DEVICE) I BIAS 4 I BIAS 4 0.5A LOAD I BIAS 0.5A LOAD 8 NO LOAD 2 2 NO LOAD 4 0 0 0 0.2 0.6 1.0 1.4 1.8 2.2 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 fSW (MHz) TEMPERATURE (°C) TEMPERATURE (°C) 8619 G25 8619 G26 8619 G27 Rev A For more information www.analog.com 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Revision History Typical Application Related Parts
