Datasheet LT8415 (Analog Devices) - 5
| Hersteller | Analog Devices |
| Beschreibung | Ultralow Power Boost Converter with Dual Half-Bridge Switches |
| Seiten / Seite | 14 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. SW … |
| Dateiformat / Größe | PDF / 268 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. SW Saturation Voltage. SHDN Minimum Input Voltage
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LT8415
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. SW Saturation Voltage SHDN Minimum Input Voltage vs Switch Current Line Regulation High vs Temperature
300 0.3 1.5 VOUT = 16V 250 0.25 1.4 200 0.2 SHDN RISING T (mV) 1.3 150 0.15 TAGE CHANGE (%) SHDN FALLING MINIMUM INPUT TAGE HIGH (V) 1.2 100 0.1 VOL SWITCH VCESA SHDN 1.1 50 OUTPUT VOL 0.05 0 0 1 0 5 10 15 20 25 0 4 8 12 16 –40 0 40 80 120 SWITCH CURRENT (mA) VCC VOLTAGE (V) TEMPERATURE (°C) 8415 G13 8415 G14 8415 G15
Output Disconnect PMOS current Start-Up Waveforms Without Start-Up Waveforms With 0.1μF vs CAP to VOUT Voltage Difference Capacitor at VREF Pin Capacitor at VREF pin
25 V SHDN SHDN CAP = 16V VOLTAGE VOLTAGE 5V/DIV 5V/DIV 20 INDUCTOR INDUCTOR CURRENT CURRENT 20mA/DIV 15 20mA/DIV CAP CAP VOLTAGE VOLTAGE 10 5V/DIV 5V/DIV V PMOS CURRENT (mA) VOUT OUT VOLTAGE VOLTAGE 5 5V/DIV 5V/DIV VCC = 3.6V 200µs/DIV 8415 G17 VCC = 3.6V 2ms/DIV 8415 G18 VOUT = 16V VOUT = 16V 0 0 4 8 12 16 CAP TO VOUT VOLTAGE DIFFERENCE (V) 8415 G16
IN1,IN2 Minimum Input Voltage Half-Bridge Fall Time and Fall Half-Bridge Rise Time and Rise High vs Temperature Delay vs Temperature Delay vs Temperature
1 5 5 0.8 4 4 RISE DELAY Y (µs) FALL TIME Y (µs) 0.6 3 3 ALL DELA RISE TIME TAGE HIGH (V) 0.4 2 2 VOL FALL DELAY IN1,IN2 MINIMUM INPUT 0.2 VCC = 3.6V 1 LOAD = 220pF 1 LOAD = 220pF V FALL TIME AND F RISE TIME AND RISE DELA OUT = 34V VCC = 3.6V, VOUT = 34V VCC = 3.6V, VOUT = 34V FRONT PAGE APPLICATION FRONT PAGE APPLICATION FRONT PAGE APPLICATION 0 0 0 –40 0 40 80 120 –40 0 40 80 120 –40 0 40 80 120 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 8415 G19 8415 G20 8415 G21 8415fb For more information www.linear.com/LT8415 5
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. SW Saturation Voltage SHDN Minimum Input Voltage vs Switch Current Line Regulation High vs Temperature
300 0.3 1.5 VOUT = 16V 250 0.25 1.4 200 0.2 SHDN RISING T (mV) 1.3 150 0.15 TAGE CHANGE (%) SHDN FALLING MINIMUM INPUT TAGE HIGH (V) 1.2 100 0.1 VOL SWITCH VCESA SHDN 1.1 50 OUTPUT VOL 0.05 0 0 1 0 5 10 15 20 25 0 4 8 12 16 –40 0 40 80 120 SWITCH CURRENT (mA) VCC VOLTAGE (V) TEMPERATURE (°C) 8415 G13 8415 G14 8415 G15
Output Disconnect PMOS current Start-Up Waveforms Without Start-Up Waveforms With 0.1μF vs CAP to VOUT Voltage Difference Capacitor at VREF Pin Capacitor at VREF pin
25 V SHDN SHDN CAP = 16V VOLTAGE VOLTAGE 5V/DIV 5V/DIV 20 INDUCTOR INDUCTOR CURRENT CURRENT 20mA/DIV 15 20mA/DIV CAP CAP VOLTAGE VOLTAGE 10 5V/DIV 5V/DIV V PMOS CURRENT (mA) VOUT OUT VOLTAGE VOLTAGE 5 5V/DIV 5V/DIV VCC = 3.6V 200µs/DIV 8415 G17 VCC = 3.6V 2ms/DIV 8415 G18 VOUT = 16V VOUT = 16V 0 0 4 8 12 16 CAP TO VOUT VOLTAGE DIFFERENCE (V) 8415 G16
IN1,IN2 Minimum Input Voltage Half-Bridge Fall Time and Fall Half-Bridge Rise Time and Rise High vs Temperature Delay vs Temperature Delay vs Temperature
1 5 5 0.8 4 4 RISE DELAY Y (µs) FALL TIME Y (µs) 0.6 3 3 ALL DELA RISE TIME TAGE HIGH (V) 0.4 2 2 VOL FALL DELAY IN1,IN2 MINIMUM INPUT 0.2 VCC = 3.6V 1 LOAD = 220pF 1 LOAD = 220pF V FALL TIME AND F RISE TIME AND RISE DELA OUT = 34V VCC = 3.6V, VOUT = 34V VCC = 3.6V, VOUT = 34V FRONT PAGE APPLICATION FRONT PAGE APPLICATION FRONT PAGE APPLICATION 0 0 0 –40 0 40 80 120 –40 0 40 80 120 –40 0 40 80 120 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 8415 G19 8415 G20 8415 G21 8415fb For more information www.linear.com/LT8415 5