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AMC317 Datasheet(PDF) 2 Page - ADDtek Corp |
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AMC317 Datasheet(HTML) 2 Page - ADDtek Corp |
2 / 7 page AMC317 Copyright © 2006 ADDtek Corp. 2 DD011_G -- MARCH 2007 TYPICAL APPLICATION Note 1: CIN is required if the regulator is far from the filter capacitor. Note 2: COUT is recommended to improve the transient response. R2 Note 3: VOUT = 1.25V ( 1 + R1 ) + I ADJ (R2) ABSOLUTE MAXIMUM RATINGS (Note 1) Input-Output Differential Voltage VD ……………..…………………………………………………………..20V Operating Junction temperature Plastic (T, ST Package) …………………………………………………………………………………… 150°C Storage Temperature Range ………………………………………………………………………. -65°C to 150°C Lead temperature (Soldering, 10 seconds) ………………………………………………………………….. 300°C Note 1: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. THERMAL DATA T, ST PACKAGE: Thermal Resistance-Junction to Tab, θ JT 3.0°C /W Thermal Resistance-Junction to Ambient, θ JA 45°C /W Junction Temperature Calculation: TJ = TA + (PD × θJA). The θ JA numbers are guidelines for the thermal performance of the device/pc-board system. All of the above assume no ambient airflow. Maximum Power Calculation: TJ(MAX) – TA(MAX) PD(MAX)= θ JA TJ( OC): Maximum recommended junction temperature TA( OC): Ambient temperature of the application θ JA( OC/W): Junction-to-junction temperature thermal resistance of the package, and other heat dissipating materials. The maximum power dissipation for a single-output regulator is : PD(MAX) = [(VIN(MAX) - VOUT(NOM))] × IOUT(NOM) + VIN(MAX) × IQ Where: VOUT(NOM) = the nominal output voltage IOUT(NOM) = the nominal output current, and IQ = the quiescent current the regulator consumes at IOUT(MAX) VIN(MAX) = the maximum input voltage Then θ JA = (150 OC – T A)/PD AMC317 VOUT COUT 1 µF CIN 0.1 µF VIN R1 240 Ω R2 5K ADJ |
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