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AAT3122 Datasheet(PDF) 4 Page - Advanced Analog Technology, Inc. |
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AAT3122 Datasheet(HTML) 4 Page - Advanced Analog Technology, Inc. |
4 / 12 page AAT3122 High Efficiency 1X/1.5X Fractional Charge Pump for White LED Applications 4 3122.2005.11.1.3 Electrical Characteristics 1 V IN = 3.5V; CIN = COUT = C1 = C2 = 1.0µF; TA = -40°C to +85°C. Unless otherwise noted, typical values are T A = 25°C. Symbol Description Conditions Min Typ Max Units Input Power Supply V IN Operation Range 2.7 5.5 V I cc Operating Current 3.0 ≤ V IN ≤ 5.5, Active, 1.8 3.5 mA No Load Current I SHDN Shutdown Current EN = 0 1.0 µA I D Maximum Output Current V IN = 3.5V; Code = 32 108 120 132 mA Charge Pump T SS Soft-Start Time 200 µs F CLK Clock Frequency 1000 kHz η CP Charge Pump Efficiency V IN = 3.6V, IOUT(Total) = 120mA; 93 % Measured from IN to OUT EN/SET V EN(L) Enable Threshold Low V IN = 2.7V to 5.5V 0.5 V V EN(H) Enable Threshold High V IN = 2.7V to 5.5V 1.4 V T LO EN/SET Low Time 0.3 75 µs T HI Minimum EN/SET High Time 50 ns T OFF EN/SET Off Timeout 500 µs Input Current EN/SET Input Leakage -1.0 1.0 µA 1. The AAT3122 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correlation with statistical process controls. |
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