Datasheet Linear Technology LT1613 (Linear Technology) - 3
| Fabricante | Linear Technology |
| Descripción | 1.4MHz, Single Cell DC/DC Converter in 5-Lead SOT-23 |
| Páginas / Página | 12 / 3 — TYPICAL PERFOR A CE CHARACTERISTICS. Oscillator Frequency vs. Switch … |
| Revisión | S |
| Formato / tamaño de archivo | PDF / 302 Kb |
| Idioma del documento | Inglés |
TYPICAL PERFOR A CE CHARACTERISTICS. Oscillator Frequency vs. Switch VCESAT vs Switch Current. Temperature
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LT1613
W U TYPICAL PERFOR A CE CHARACTERISTICS Oscillator Frequency vs Switch VCESAT vs Switch Current Temperature SHDN Pin Current vs VSHDN
700 2.00 50 TA = 25°C TA = 25°C 600 1.75 VIN = 5V µA) 40 1.50 500 V 1.25 IN = 1.5V 30 400 (mV) 1.00 CESAT 300 V 0.75 20 200 0.50 10 SWITCHING FREQUENCY (MHz) SHDN PIN BIAS CURRENT ( 100 0.25 0 0 0 0 100 200 300 400 500 600 700 –50 –25 0 25 50 75 100 0 1 2 3 4 5 SWITCH CURRENT (mA) TEMPERATURE (°C) SHDN PIN VOLTAGE (V) 1613 G01 1613 G02 1613 G03
Current Limit vs Duty Cycle Feedback Pin Voltage
1000 1.25 900 1.24 800 70°C VOLTAGE 700 1.23 600 25°C 500 1.22 CURRENT LIMIT (mA) –40°C 400 FEEDBACK PIN VOLTAGE (V) 1.21 300 200 1.20 10 20 30 40 50 60 70 80 –50 –25 0 25 50 75 100 DUTY CYCLE (%) TEMPERATURE (°C) 1613 G04 1613 G05
Switching Waveforms, Circuit of Figure 1
VOUT 100mV/DIV AC COUPLED VSW 5V/DIV ISW 200mA/DIV ILOAD = 150mA 200ns/DIV 1613 G06 3
W U TYPICAL PERFOR A CE CHARACTERISTICS Oscillator Frequency vs Switch VCESAT vs Switch Current Temperature SHDN Pin Current vs VSHDN
700 2.00 50 TA = 25°C TA = 25°C 600 1.75 VIN = 5V µA) 40 1.50 500 V 1.25 IN = 1.5V 30 400 (mV) 1.00 CESAT 300 V 0.75 20 200 0.50 10 SWITCHING FREQUENCY (MHz) SHDN PIN BIAS CURRENT ( 100 0.25 0 0 0 0 100 200 300 400 500 600 700 –50 –25 0 25 50 75 100 0 1 2 3 4 5 SWITCH CURRENT (mA) TEMPERATURE (°C) SHDN PIN VOLTAGE (V) 1613 G01 1613 G02 1613 G03
Current Limit vs Duty Cycle Feedback Pin Voltage
1000 1.25 900 1.24 800 70°C VOLTAGE 700 1.23 600 25°C 500 1.22 CURRENT LIMIT (mA) –40°C 400 FEEDBACK PIN VOLTAGE (V) 1.21 300 200 1.20 10 20 30 40 50 60 70 80 –50 –25 0 25 50 75 100 DUTY CYCLE (%) TEMPERATURE (°C) 1613 G04 1613 G05
Switching Waveforms, Circuit of Figure 1
VOUT 100mV/DIV AC COUPLED VSW 5V/DIV ISW 200mA/DIV ILOAD = 150mA 200ns/DIV 1613 G06 3