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AAT1143 Datasheet(PDF) 4 Page - Advanced Analogic Technologies |
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AAT1143 Datasheet(HTML) 4 Page - Advanced Analogic Technologies |
4 / 20 page Electrical Characteristics 1 T A = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C, VIN = 3.6V. Symbol Description Conditions Min Typ Max Units Step-Down Converter V IN Input Voltage 2.7 5.5 V V IN Rising 2.6 V V UVLO UVLO Threshold Hysteresis 100 mV V IN Falling 1.8 V V OUT Output Voltage Tolerance I OUT = 0 to 400mA, -3.0 +3.0 % V IN = 2.7V to 5.5V V OUT Output Voltage Range Fixed Output Version 0.6 4.0 V Adjustable Output Version 2 0.6 2.5 I Q Quiescent Current No Load, 0.6V Adjustable 25 50 µA Version I SHDN Shutdown Current EN = AGND = PGND 1.0 µA I LIM P-Channel Current Limit 600 mA R DS(ON)H High Side Switch On Resistance 0.45 Ω R DS(ON)L Low Side Switch On Resistance 0.40 Ω I LXLEAK LX Leakage Current V IN = 5.5V, VLX = 0 to VIN, 1µA EN = GND ∆V Linereg Line Regulation V IN = 2.7V to 5.5V 0.2 %/V V OUT Out Threshold Voltage Accuracy 0.6V Output, No Load 597 600 615 mV T A = 25°C I OUT Out Leakage Current 0.6V Output 0.2 µA R OUT Out Impedance >0.6V Output 250 k Ω F OSC Oscillator Frequency T A = 25°C 0.7 1.0 1.5 MHz T SD Over-Temperature Shutdown Threshold 140 °C T HYS Over-Temperature Shutdown Hysteresis 15 °C EN V EN(L) Enable Threshold Low 0.6 V V EN(H) Enable Threshold High 1.4 V I EN Input Low Current V IN = VFB = 5.5V -1.0 1.0 µA AAT1143 1MHz 400mA Step-Down Converter 4 1143.2005.09.1.7 1. The AAT1143 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. 2. For adjustable version with higher than 2.5V output, please consult your AnalogicTech representative. |
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