Datasheet LTC1707 (Analog Devices) - 4
| Hersteller | Analog Devices |
| Beschreibung | High Efficiency Monolithic Synchronous Step-Down Switching Regulator |
| Seiten / Seite | 16 / 4 — TYPICAL PERFOR A CE CHARACTERISTICS. Maximum Output Current vs. Switch … |
| Dateiformat / Größe | PDF / 228 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFOR A CE CHARACTERISTICS. Maximum Output Current vs. Switch Leakage Current. Switch Resistance. Input Voltage
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LTC1707
W U TYPICAL PERFOR A CE CHARACTERISTICS Maximum Output Current vs Switch Leakage Current Switch Resistance Input Voltage vs Temperature vs Temperature
1000 1800 0.9 VIN = 8.4V VIN = 5V 1600 V 0.8 OUT = 1.8V 800 SYNCHRONOUS V 1400 OUT = 1.5V ) 0.7 Ω SWITCH 1200 0.6 600 1000 0.5 V MAIN OUT = 5V SYNCHRONOUS 800 0.4 SWITCH 400 SWITCH VOUT = 3.3V 600 0.3 V OUTPUT CURRENT (mA) OUT = 2.5V SWITCH LEAKAGE (nA) 400 SWITCH RESISTANCE ( 200 V 0.2 OUT = 2.9V MAIN TJ = 85°C 200 0.1 SWITCH L = 15µH 0 0 0 2.5 3.5 4.5 5.5 6.5 7.5 8.5 – 50 – 25 0 25 50 75 100 125 – 50 – 25 0 25 50 75 100 125 INPUT VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 1707 G10 1707 G11 1707 G12
Switch Resistance vs Input Voltage Load Step Transient Response Burst Mode Operation
0.9 ITH 0.8 SW 0.5V/DIV 5V/DIV ) 0.7 Ω SYNCHRONOUS SWITCH 0.6 VOUT VOUT 20mV/DIV 0.5 50mV/DIV MAIN SWITCH AC COUPLED AC COUPLED 0.4 ILOAD ILOAD 0.3 500mA/DIV 200mA/DIV SWITCH RESISTANCE ( 0.2 1707 G14 1707 G15 V 25 IN = 5V µs/DIV V 10 IN = 5V µs/DIV 0.1 VOUT = 3.3V VOUT = 3.3V L = 15µH L = 15µH 0 CIN = 22µF CIN = 22µF 2.5 3.5 4.5 5.5 6.5 7.5 8.5 COUT = 100µF COUT = 100µF INPUT VOLTAGE (V) ILOAD = 0mA TO 500mA ILOAD = 50mA Burst Mode OPERATION 1707 G13 4
W U TYPICAL PERFOR A CE CHARACTERISTICS Maximum Output Current vs Switch Leakage Current Switch Resistance Input Voltage vs Temperature vs Temperature
1000 1800 0.9 VIN = 8.4V VIN = 5V 1600 V 0.8 OUT = 1.8V 800 SYNCHRONOUS V 1400 OUT = 1.5V ) 0.7 Ω SWITCH 1200 0.6 600 1000 0.5 V MAIN OUT = 5V SYNCHRONOUS 800 0.4 SWITCH 400 SWITCH VOUT = 3.3V 600 0.3 V OUTPUT CURRENT (mA) OUT = 2.5V SWITCH LEAKAGE (nA) 400 SWITCH RESISTANCE ( 200 V 0.2 OUT = 2.9V MAIN TJ = 85°C 200 0.1 SWITCH L = 15µH 0 0 0 2.5 3.5 4.5 5.5 6.5 7.5 8.5 – 50 – 25 0 25 50 75 100 125 – 50 – 25 0 25 50 75 100 125 INPUT VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 1707 G10 1707 G11 1707 G12
Switch Resistance vs Input Voltage Load Step Transient Response Burst Mode Operation
0.9 ITH 0.8 SW 0.5V/DIV 5V/DIV ) 0.7 Ω SYNCHRONOUS SWITCH 0.6 VOUT VOUT 20mV/DIV 0.5 50mV/DIV MAIN SWITCH AC COUPLED AC COUPLED 0.4 ILOAD ILOAD 0.3 500mA/DIV 200mA/DIV SWITCH RESISTANCE ( 0.2 1707 G14 1707 G15 V 25 IN = 5V µs/DIV V 10 IN = 5V µs/DIV 0.1 VOUT = 3.3V VOUT = 3.3V L = 15µH L = 15µH 0 CIN = 22µF CIN = 22µF 2.5 3.5 4.5 5.5 6.5 7.5 8.5 COUT = 100µF COUT = 100µF INPUT VOLTAGE (V) ILOAD = 0mA TO 500mA ILOAD = 50mA Burst Mode OPERATION 1707 G13 4