Datasheet LTC3103 (Analog Devices) - 6
| Fabricante | Analog Devices |
| Descripción | 1.8μA Quiescent Current, 15V, 300mA Synchronous Step-Down DC/DC Converter |
| Páginas / Página | 20 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. … |
| Formato / tamaño de archivo | PDF / 442 Kb |
| Idioma del documento | Inglés |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Minimum Input Voltage at. Load Step
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LTC3103
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted Minimum Input Voltage at Load Step Load Step Maximum Duty Cycle vs Load (Automatic Burst Mode Operation) (Forced Continuous Operation) Current
V 5.5 OUT VOUT 200mV/DIV 50mV/DIV AC-COUPLED AC-COUPLED 5.0 IL I 200mA/DIV L V V 100mA/DIV 4.5 OUT = 4.2V OUT = 2.2V VOUT = 3.3V VOUT = 1.8V VOUT = 2.5V VOUT = 1.5V I 4.0 I LOAD LOAD 100mA/DIV 200mA/DIV 200µs/DIV 3103 G19 200µs/DIV 3103 G20 INPUT VOLTAGE (V) 3.5 ILOAD = LOAD STEP, 5mA TO 300mA ILOAD = LOAD STEP, 50mA TO 200mA VIN = 10V VIN = 10V 3.0 CIN = 10µF L = 10µH L = 10µH VOUT = 2.5V VOUT = 2.2V COUT = 22µF 2.5 COUT = 47µF 0 50 100 150 200 250 300 LOAD CURRENT (mA) 3103 G21
Minimum Input Voltage at Maximum Duty Cycle vs Load Load Regulation Load Regulation Current (Automatic Burst Mode Operation) (Automatic Burst Mode Operation)
15 1.0 1.0 V NORMALIZED AT ILOAD = 100mA NORMALIZED AT ILOAD = 100mA 14 OUT = 12V VIN = 10V VIN = 10V 0.5 V 0.5 V 13 OUT = 5V OUT = 3.3V CFF = 12pF CFF = 12pF 12 (%) 0 (%) 0 11 VOUT = 9V OUT OUT 10 –0.5 –0.5 9 –1.0 INPUT VOLTAGE (V) 8 –1.0 CHANGE IN V CHANGE IN V 7 COUT = 68µF –1.5 COUT = 68µF V –1.5 6 OUT = 5V COUT = 47µF COUT = 47µF COUT = 22µF COUT = 33µF 5 –2.0 –2.0 0 50 100 150 200 250 300 0 10 20 30 40 50 0 10 20 30 40 50 60 70 80 LOAD CURRENT (mA) ILOAD (mA) ILOAD (mA) 3103 G22 3103 G23 3103 G24
Load Regulation Maximum Duty Cycle Automatic Burst Mode Threshold (Automatic Burst Mode Operation) vs Input Voltage vs Supply Voltage
1.0 100 160 NORMALIZED AT ILOAD = 100mA VOUT = 1.2V 0.5 VIN = 10V 140 VOUT = 1.8V V 95 OUT = 1.8V I V OUT = 1mA OUT = 2.5V 0 CFF = 12pF , mA) 120 VOUT = 3.3V 90 VOUT = 5V (%) LOAD –0.5 IOUT = 300mA 100 OUT 85 –1.0 80 80 –1.5 60 CHANGE IN V 75 –2.0 40 C MAXIMUM DUTY CYCLE (%) OUT = 100µF BURST THRESHOLD (I –2.5 C 70 20 OUT = 68µF COUT = 47µF –3.0 65 0 0 20 40 60 80 100 2 3 4 5 6 7 8 9 0 2 4 6 8 10 12 14 16 I INPUT VOLTAGE (V) INPUT VOLTAGE (V) LOAD (mA) 3103 G25 3103 G26 3103 G27 3103fa 6 For more information www.linear.com/LTC3103 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted Minimum Input Voltage at Load Step Load Step Maximum Duty Cycle vs Load (Automatic Burst Mode Operation) (Forced Continuous Operation) Current
V 5.5 OUT VOUT 200mV/DIV 50mV/DIV AC-COUPLED AC-COUPLED 5.0 IL I 200mA/DIV L V V 100mA/DIV 4.5 OUT = 4.2V OUT = 2.2V VOUT = 3.3V VOUT = 1.8V VOUT = 2.5V VOUT = 1.5V I 4.0 I LOAD LOAD 100mA/DIV 200mA/DIV 200µs/DIV 3103 G19 200µs/DIV 3103 G20 INPUT VOLTAGE (V) 3.5 ILOAD = LOAD STEP, 5mA TO 300mA ILOAD = LOAD STEP, 50mA TO 200mA VIN = 10V VIN = 10V 3.0 CIN = 10µF L = 10µH L = 10µH VOUT = 2.5V VOUT = 2.2V COUT = 22µF 2.5 COUT = 47µF 0 50 100 150 200 250 300 LOAD CURRENT (mA) 3103 G21
Minimum Input Voltage at Maximum Duty Cycle vs Load Load Regulation Load Regulation Current (Automatic Burst Mode Operation) (Automatic Burst Mode Operation)
15 1.0 1.0 V NORMALIZED AT ILOAD = 100mA NORMALIZED AT ILOAD = 100mA 14 OUT = 12V VIN = 10V VIN = 10V 0.5 V 0.5 V 13 OUT = 5V OUT = 3.3V CFF = 12pF CFF = 12pF 12 (%) 0 (%) 0 11 VOUT = 9V OUT OUT 10 –0.5 –0.5 9 –1.0 INPUT VOLTAGE (V) 8 –1.0 CHANGE IN V CHANGE IN V 7 COUT = 68µF –1.5 COUT = 68µF V –1.5 6 OUT = 5V COUT = 47µF COUT = 47µF COUT = 22µF COUT = 33µF 5 –2.0 –2.0 0 50 100 150 200 250 300 0 10 20 30 40 50 0 10 20 30 40 50 60 70 80 LOAD CURRENT (mA) ILOAD (mA) ILOAD (mA) 3103 G22 3103 G23 3103 G24
Load Regulation Maximum Duty Cycle Automatic Burst Mode Threshold (Automatic Burst Mode Operation) vs Input Voltage vs Supply Voltage
1.0 100 160 NORMALIZED AT ILOAD = 100mA VOUT = 1.2V 0.5 VIN = 10V 140 VOUT = 1.8V V 95 OUT = 1.8V I V OUT = 1mA OUT = 2.5V 0 CFF = 12pF , mA) 120 VOUT = 3.3V 90 VOUT = 5V (%) LOAD –0.5 IOUT = 300mA 100 OUT 85 –1.0 80 80 –1.5 60 CHANGE IN V 75 –2.0 40 C MAXIMUM DUTY CYCLE (%) OUT = 100µF BURST THRESHOLD (I –2.5 C 70 20 OUT = 68µF COUT = 47µF –3.0 65 0 0 20 40 60 80 100 2 3 4 5 6 7 8 9 0 2 4 6 8 10 12 14 16 I INPUT VOLTAGE (V) INPUT VOLTAGE (V) LOAD (mA) 3103 G25 3103 G26 3103 G27 3103fa 6 For more information www.linear.com/LTC3103 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts