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AAT1155 Datasheet(PDF) 4 Page - Advanced Analogic Technologies |
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AAT1155 Datasheet(HTML) 4 Page - Advanced Analogic Technologies |
4 / 17 page ![]() Electrical Characteristics V IN = VCC = VP = 5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C. Symbol Description Conditions Min Typ Max Units V IN Input Voltage Range 2.7 5.5 V V OUT Output Voltage Tolerance V IN = VOUT + 0.2 to 5.5V, -2.5 2.5 % I OUT = 0.5A V IL Input Low Voltage 0.6 V V IH Input High Voltage 1.4 V V UVLO Under-Voltage Lockout V IN Rising 2.5 V V IN Falling 1.2 V UVLO(HYS) Under-Voltage Lockout Hysteresis 250 mV I Q Quiescent Supply Current No Load, V FB = 0V 630 1000 µA I SHDN Shutdown Current V EN = 0V, VIN = 5.5V 1.0 µA I LIM Current Limit T A = 25°C 4.4 A R DS(ON)L High Side Switch On Resistance T A = 25°C 60 m Ω η Efficiency I OUT = 1.0A 92 % ∆V OUT (VOUT*∆VIN) Load Regulation I LOAD = 0A to 2.5A ±2.3 % ∆V OUT/VOUT Line Regulation V IN = 2.7V to 5.5V 0.75 %/V F OSC Oscillator Frequency T A = 25°C 1 MHz T SD Over-Temperature Shutdown 140 °C Threshold T HYS Over-Temperature Shutdown 15 °C Hysteresis AAT1155 1MHz 2.5A Step-Down DC/DC Converter 4 1155.2005.11.1.6 |
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