Datasheet LT8616 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | Dual 42V Synchronous Monolithic Step-Down Regulator with 6.5μA Quiescent Current |
| 页数 / 页 | 26 / 3 — ELECTRICAL. CHARACTERISTICS The. denotes the specifications which apply … |
| 文件格式/大小 | PDF / 444 Kb |
| 文件语言 | 英语 |
ELECTRICAL. CHARACTERISTICS The. denotes the specifications which apply over the full operating
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LT8616
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. PARAMETER CONDITIONS MIN TYP MAX UNITS Common
Quiescent Current EN/UV1 = EN/UV2 = 0V, Current from VIN1 1.7 4.0 µA l 1.7 8.0 µA EN/UV1 = EN/UV2 = 2V, SYNC = 0V (Burst Mode), Not Switching, 3.0 5.0 µA Current from VIN1 l 3.0 12.0 µA EN/UV1 = EN/UV2 = 2V, SYNC = 3V (Pulse-Skipping Mode), Not l 0.5 1.0 mA Switching, Current from BIAS or VIN1 FB Voltage VIN = 6V, Load = 0.5A 782 790 798 mV l 778 790 802 mV FB Voltage Line Regulation VIN = 4V to 25V, Load = 0.5A 0.005 %/V FB Pin Input Current FB = 0.79V –20 20 nA EN/UV Pin Threshold Rising l 0.97 1.03 1.09 V EN/UV Pin Hysteresis 50 mV EN/UV Pin Current EN/UV = 2V –20 20 nA PG Upper Threshold from VFB FB Rising l 6 10 13 % PG Lower Threshold from VFB FB Falling l –6 –10 –13 % PG Hysteresis 1 % PG Leakage PG = 3.3V –100 100 nA PG Pull-Down Resistance PG = 0.1V 350 Ω TR/SS Source Current 1 2 3 µA TR/SS Pull-Down Resistance TR/SS = 0.1V 250 Ω BIAS Pin Current Consumption VOUT1 = 3.3V, Load1 = 0.5A, VOUT2 = 3.3V, Load2 = 0.5A, fSW = 1MHz 7 mA Oscillator Frequency RT = 14.7kΩ l 1.85 2.05 2.25 MHz RT = 37.4kΩ l 900 1000 1100 kHz RT = 221kΩ l 160 200 240 kHz SYNC Threshold SYNC Falling 0.4 V SYNC Rising 2.4 V SYNC Pin Current SYNC = 3V –100 100 nA
Channel 1
Minimum VIN1 Voltage l 3.0 3.4 V Supply Current in Regulation VIN = 6V, VOUT1 = 3.3V, Load = 100µA 80 110 µA VIN = 6V, VOUT1 = 3.3V Load = 1mA 620 910 µA SW1 Minimum On-Time Load = 0.25A, Pulse-Skipping Mode l 20 35 55 ns SW1 Top NMOS On-Resistance 310 mΩ SW1 Peak Current Limit (Note 3) l 3.2 4.2 5.2 A SW1 Bottom NMOS On-Resistance 190 mΩ SW1 Valley Current Limit l 1.5 2.0 3.0 A SW1 Leakage Current VIN1 = 42V, VSW1 = 0V, 42V –2 2 µA 8616fa For more information www.linear.com/LT8616 3
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. PARAMETER CONDITIONS MIN TYP MAX UNITS Common
Quiescent Current EN/UV1 = EN/UV2 = 0V, Current from VIN1 1.7 4.0 µA l 1.7 8.0 µA EN/UV1 = EN/UV2 = 2V, SYNC = 0V (Burst Mode), Not Switching, 3.0 5.0 µA Current from VIN1 l 3.0 12.0 µA EN/UV1 = EN/UV2 = 2V, SYNC = 3V (Pulse-Skipping Mode), Not l 0.5 1.0 mA Switching, Current from BIAS or VIN1 FB Voltage VIN = 6V, Load = 0.5A 782 790 798 mV l 778 790 802 mV FB Voltage Line Regulation VIN = 4V to 25V, Load = 0.5A 0.005 %/V FB Pin Input Current FB = 0.79V –20 20 nA EN/UV Pin Threshold Rising l 0.97 1.03 1.09 V EN/UV Pin Hysteresis 50 mV EN/UV Pin Current EN/UV = 2V –20 20 nA PG Upper Threshold from VFB FB Rising l 6 10 13 % PG Lower Threshold from VFB FB Falling l –6 –10 –13 % PG Hysteresis 1 % PG Leakage PG = 3.3V –100 100 nA PG Pull-Down Resistance PG = 0.1V 350 Ω TR/SS Source Current 1 2 3 µA TR/SS Pull-Down Resistance TR/SS = 0.1V 250 Ω BIAS Pin Current Consumption VOUT1 = 3.3V, Load1 = 0.5A, VOUT2 = 3.3V, Load2 = 0.5A, fSW = 1MHz 7 mA Oscillator Frequency RT = 14.7kΩ l 1.85 2.05 2.25 MHz RT = 37.4kΩ l 900 1000 1100 kHz RT = 221kΩ l 160 200 240 kHz SYNC Threshold SYNC Falling 0.4 V SYNC Rising 2.4 V SYNC Pin Current SYNC = 3V –100 100 nA
Channel 1
Minimum VIN1 Voltage l 3.0 3.4 V Supply Current in Regulation VIN = 6V, VOUT1 = 3.3V, Load = 100µA 80 110 µA VIN = 6V, VOUT1 = 3.3V Load = 1mA 620 910 µA SW1 Minimum On-Time Load = 0.25A, Pulse-Skipping Mode l 20 35 55 ns SW1 Top NMOS On-Resistance 310 mΩ SW1 Peak Current Limit (Note 3) l 3.2 4.2 5.2 A SW1 Bottom NMOS On-Resistance 190 mΩ SW1 Valley Current Limit l 1.5 2.0 3.0 A SW1 Leakage Current VIN1 = 42V, VSW1 = 0V, 42V –2 2 µA 8616fa For more information www.linear.com/LT8616 3