Datasheet LT8619, LT8619-5 (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | 60V, 1.2A Synchronous Monolithic Buck Regulator with 6μA Quiescent Current |
| Pages / Page | 28 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. OUT. = 3.3V. Load Regulation. Line … |
| Revision | A |
| File Format / Size | PDF / 1.2 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. OUT. = 3.3V. Load Regulation. Line Regulation. Top FET Current Limit vs. EN/UV Threshold
Model Line for this Datasheet
LT8619
Text Version of Document
LT8619/LT8619-5
TYPICAL PERFORMANCE CHARACTERISTICS OUT V = 3.3V Load Regulation Line Regulation
1.00 0.2 0.10 VIN = 12V VIN = 12V VOUT = 2.4V, NO LOAD f 0.75 OSC = 700kHz VOUT = 3.3V fSW = 400kHz NO LOAD fSW = 700kHz FORCED CONTINUOUS MODE FORCED CONTINUOUS MODE 0.50 0.1 FORCED CONTINUOUS MODE 0.05 0.25 (%) (%) (%) 0 0 0 OUT OUT OUT ∆V –0.25 ∆V ∆V –0.50 –0.1 –0.05 –0.75 –1.00 –0.2 –0.10 –50 –25 0 25 50 75 100 125 150 0 0.2 0.4 0.6 0.8 1.0 1.2 1 10 100 TEMPERATURE (°C) LOAD CURRENT (A) VIN (V) 8619 G10 8619 G11 8619 G12
Top FET Current Limit vs EN/UV Threshold Duty Cycle Switch Resistance
1.2 2.0 1000 EN/UV RISING LOAD CURRENT = 100mA 900 1.0 1.9 800 POWER–ON THRESHOLD 700 0.8 EN/UV FALLING 1.8 TOP SWITCH 600 (V) 0.6 (mΩ) 500 V EN/UV 1.7 400 SHUTDOWN THRESHOLD 0.4 R DS(ON) CURRENT LIMIT (A) VIN = 12V 300 V 1.6 OUT = 3.3V 200 0.2 fSW = 700kHz BOTTOM SWITCH L = 10µH 100 IHLP-2020BZ-01 0 1.5 0 –50 –25 0 25 50 75 100 125 150 0 20 40 60 80 100 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) DUTY CYCLE (%) TEMPERATURE (°C) 8619 G13 8619 G14 8619 G15
Dropout Dropout vs Temperature fSW
1.0 2.00 5 VOUT = 3.3V L = 10µH, IHLP-2020BZ-01 VIN = 12V ∆V V 4 OUT = –1% OUT = 3.3V, ∆VOUT = –1% V 1.75 OUT = 3.3V, NO LOAD fSW = 2MHz 0.8 fOSC = 700kHz FORCED CONTINUOUS MODE 3 L = 3.3µH, IHLP-2020AB-01 1.50 FORCED CONTINUOUS MODE 1.2A LOAD FORCED CONTINUOUS MODE (CONTINUOUS OPERATION 2 ABOVE MAX JUNCTION 0.6 1.25 1.0A LOAD f TAGE (V) TEMPERATURE MAY SW = 700kHz 1 TAGE (V) PERMANENTLY (%) 1.00 DAMAGE THE 0 SW fSW = 2MHz DEVICE) 0.4 ∆f –1 0.75 0.5A LOAD –2 DROPOUT VOL DROPOUT VOL 0.50 0.2 –3 0.25 –4 NO LOAD 0 0 –5 0 0.2 0.4 0.6 0.8 1.0 1.2 –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) 8619 G16 8619 G17 8619 G18 Rev A 6 For more information www.analog.com 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
TYPICAL PERFORMANCE CHARACTERISTICS OUT V = 3.3V Load Regulation Line Regulation
1.00 0.2 0.10 VIN = 12V VIN = 12V VOUT = 2.4V, NO LOAD f 0.75 OSC = 700kHz VOUT = 3.3V fSW = 400kHz NO LOAD fSW = 700kHz FORCED CONTINUOUS MODE FORCED CONTINUOUS MODE 0.50 0.1 FORCED CONTINUOUS MODE 0.05 0.25 (%) (%) (%) 0 0 0 OUT OUT OUT ∆V –0.25 ∆V ∆V –0.50 –0.1 –0.05 –0.75 –1.00 –0.2 –0.10 –50 –25 0 25 50 75 100 125 150 0 0.2 0.4 0.6 0.8 1.0 1.2 1 10 100 TEMPERATURE (°C) LOAD CURRENT (A) VIN (V) 8619 G10 8619 G11 8619 G12
Top FET Current Limit vs EN/UV Threshold Duty Cycle Switch Resistance
1.2 2.0 1000 EN/UV RISING LOAD CURRENT = 100mA 900 1.0 1.9 800 POWER–ON THRESHOLD 700 0.8 EN/UV FALLING 1.8 TOP SWITCH 600 (V) 0.6 (mΩ) 500 V EN/UV 1.7 400 SHUTDOWN THRESHOLD 0.4 R DS(ON) CURRENT LIMIT (A) VIN = 12V 300 V 1.6 OUT = 3.3V 200 0.2 fSW = 700kHz BOTTOM SWITCH L = 10µH 100 IHLP-2020BZ-01 0 1.5 0 –50 –25 0 25 50 75 100 125 150 0 20 40 60 80 100 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) DUTY CYCLE (%) TEMPERATURE (°C) 8619 G13 8619 G14 8619 G15
Dropout Dropout vs Temperature fSW
1.0 2.00 5 VOUT = 3.3V L = 10µH, IHLP-2020BZ-01 VIN = 12V ∆V V 4 OUT = –1% OUT = 3.3V, ∆VOUT = –1% V 1.75 OUT = 3.3V, NO LOAD fSW = 2MHz 0.8 fOSC = 700kHz FORCED CONTINUOUS MODE 3 L = 3.3µH, IHLP-2020AB-01 1.50 FORCED CONTINUOUS MODE 1.2A LOAD FORCED CONTINUOUS MODE (CONTINUOUS OPERATION 2 ABOVE MAX JUNCTION 0.6 1.25 1.0A LOAD f TAGE (V) TEMPERATURE MAY SW = 700kHz 1 TAGE (V) PERMANENTLY (%) 1.00 DAMAGE THE 0 SW fSW = 2MHz DEVICE) 0.4 ∆f –1 0.75 0.5A LOAD –2 DROPOUT VOL DROPOUT VOL 0.50 0.2 –3 0.25 –4 NO LOAD 0 0 –5 0 0.2 0.4 0.6 0.8 1.0 1.2 –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) 8619 G16 8619 G17 8619 G18 Rev A 6 For more information www.analog.com 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
