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AAT1239ITP-1-T1 Datasheet(PDF) 4 Page - Advanced Analogic Technologies |
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AAT1239ITP-1-T1 Datasheet(HTML) 4 Page - Advanced Analogic Technologies |
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4 / 23 page  AAT1239-1 40V Step-Up Converter for 4 to 10 White LEDs SwitchRegTM PRODUCT DATASHEET 4 1239-1.2008.06.1.1 www .analogictech.com AAT1239-1 40V Step-Up Converter for 4 to 10 White LEDs SwitchRegTM PRODUCT DATASHEET 4 1239-1.2008.06.1.1 www .analogictech.com Electrical Characteristics1 TA = -40°C to +85°C unless otherwise noted. Typical values are at 25°C, VIN = 3.6V. Symbol Description Conditions Min Typ Max Units Power Supply PVIN, VIN Input Voltage Range 2.7 5.5 V VOUT(MAX) Maximum Output Voltage 40 V IQ Operating Current SEL = GND, FB = 0.1V 70 μA ISHDN Shutdown Current EN/SET = GND 1.0 μA IOUT Maximum Continuous Output Current2 2.7V < VIN < 5.5V, VOUT = 40V 30 mA ΔVLINEREG(FB)/ΔVIN Line Regulation VIN = 2.7V to 5.5V, VFB = 0.6V 0.7 % RDS(ON) L Low Side Switch On Resistance 135 mΩ RDS(ON) IN Input Disconnect Switch On Resistance 180 mΩ TSS Soft-Start Time From Enable to Output Regulation; VFB = 300mV 400 μs VOVP Over-Voltage Protection Threshold VOUT Rising 1.1 1.2 1.3 V Over-Voltage Hysteresis VOUT Falling 100 mV ILIMIT N-Channel Current Limit 2.5 A TSD TJ Thermal Shutdown Threshold 140 °C THYS TJ Thermal Shutdown Hysteresis 15 °C SEL, EN/SET VSEL(L) SEL Threshold Low 0.4 V VSEL(H) SEL Threshold High 1.4 V VEN/SET(L) Enable Threshold Low 0.4 V VEN/SET(H) Enable Threshold High 1.4 V TEN/SET (LO) EN/SET Low Time VEN/SET < 0.6V 0.3 75 μs TEN/SET(HI) EN/SET High Time VEN/SET > 1.4V 75 μs TOFF EN/SET Off Timeout VEN/SET < 0.6V 500 μs TLAT EN/SET Latch Timeout VEN/SET > 1.4V 500 μs IEN/SET EN/SET Input Leakage VEN/SET = 5V VIN = 5V -1 1 μA AAT1239-1 VFB FB Pin Regulation VIN = 2.7V to 5.5V, SEL = GND, EN/SET = DATA16 0.085 0.1 1.115 V VIN = 2.7V to 5.5V, SEL = HIGH, EN/SET = HIGH 0.54 0.6 0.66 1. Specification over the -40°C to +85°C operating temperature range is assured by design, characterization, and correlation with statistical process controls. 2. Maximum continuous output current increases with reduced output voltage, but may vary depending on operating efficiency and thermal limitations. |
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