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MAX15007 Datasheet(PDF) 11 Page - Maxim Integrated Products |
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MAX15007 Datasheet(HTML) 11 Page - Maxim Integrated Products |
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11 / 14 page  40V, Ultra-Low Quiescent-Current Linear Regulators in 6-Pin TDFN/8-Pin SO Maxim Integrated 11 MAX15006/MAX15007 Example 2 (TDFN Package): TA = +85°C VIN = 14V VOUT = 5V Calculate the maximum allowable package dissipation at the given temperature as follows: Then determine the maximum output current: Example 3 (TDFN Package): TA = +50°C VIN = 9V VOUT = 5V Calculate the maximum allowable package dissipation at the given temperature as follows: PD = 1.9048W Find the maximum output current: In Examples 2 and 3, the maximum output current is calculated as 172mA and 476mA, respectively; howev- er, the allowable output current cannot exceed 50mA. Alternately, use Figures 6a and 6b to quickly determine the maximum allowable output current for selected ambient temperatures and input voltages. Output-Capacitor Selection and Regulator Stability For stable operation over the full temperature range and with load currents up to 50mA, use a low-ESR 2.2μF (min) ceramic or tantalum output capacitor. Use larger output-capacitor values such as 22μF to reduce noise, improve load-transient response, and power- supply rejection. Some ceramic dielectrics exhibit large capacitance and ESR variations with temperature. Ensure the minimum capacitance under worst-case conditions does not drop below 1.3μF to ensure output stability. With an X7R dielectric, 2.2μF should be sufficient at all operat- ing temperatures. I 1.9048W 9V 5V 476mA OUT(MAX) ( = − =⇒IOUT MAX)) = 50mA I 1.5478W 14V 5V 172mA OUT(MAX) ( = − =⇒IOUT MAXX mA ) = 50 P 1.9048W 0.0238 W C 85 C 70 C 1. D =− ° °− ° ()= 55478W VIN (V) 35 30 20 25 10 15 5 5 10 15 20 25 30 35 40 45 50 55 60 0 040 TA = +85 °C TA = +70 °C TA = +125 °C VOUT = 5V 6-PIN TDFN Figure 6a. Calculated Maximum Output Current vs. Input Voltage (6-Pin TDFN-EP) VIN (V) 35 30 20 25 10 15 5 5 10 15 20 25 30 35 40 45 50 55 60 0 040 TA = +85 °C TA = +70 °C TA = +125 °C VOUT = 5V 8-PIN SO-EP Figure 6b. Calculated Maximum Output Current vs. Input Voltage (8-Pin SO-EP) |
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Similar Description - MAX15007 |
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