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PIC12F635ESS датащи(PDF) 179 Page - Microchip Technology |
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PIC12F635ESS датащи(HTML) 179 Page - Microchip Technology |
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179 / 234 page ![]() © 2007 Microchip Technology Inc. DS41232D-page 177 PIC12F635/PIC16F636/639 15.8 Thermal Considerations Standard Operating Conditions (unless otherwise stated) Operating temperature -40°C ≤ TA ≤ +125°C Para m No. Sym Characteristic Typ Units Conditions TH01 θJA Thermal Resistance Junction to Ambient PIC12F635 84.6 °C/W 8-pin PDIP package 163.0 °C/W 8-pin SOIC package 52.4 °C/W 8-pin DFN 4x4x0.9 mm package 52.4 °C/W 8-pin DFN-S 6x5 mm package PIC16F636 69.8 °C/W 14-pin PDIP package 85.0 °C/W 14-pin SOIC package 100.4 °C/W 14-pin TSSOP package 46.3 °C/W 16-pin QFN 4x0.9mm package PIC16F639 108.1 °C/W 20-pin SSOP package TH02 θJC Thermal Resistance Junction to Case PIC12F635 41.2 °C/W 8-pin PDIP package 38.8 °C/W 8-pin SOIC package 3.0 °C/W 8-pin DFN 4x4x0.9 mm package 3.0 °C/W 8-pin DFN-S 6x5 mm package PIC16F636 32.5 °C/W 14-pin PDIP package 31.0 °C/W 14-pin SOIC package 31.7 °C/W 14-pin TSSOP package 2.6 °C/W 16-pin QFN 4x0.9mm package PIC16F639 32.2 °C/W 20-pin SSOP package TH03 TJ Junction Temperature 150 °C For derated power calculations TH04 PD Power Dissipation — W PD = PINTERNAL + PI/O TH05 PINTERNAL Internal Power Dissipation — W PINTERNAL = IDD x VDD (NOTE 1) TH06 PI/O I/O Power Dissipation — W PI/O = Σ (IOL * VOL) + Σ (IOH * (VDD - VOH)) TH07 PDER Derated Power — W PDER = (TJ - TA)/ θJA (NOTE 2, 3) Note 1: IDD is current to run the chip alone without driving any load on the output pins. 2: TA = Ambient Temperature. 3: Maximum allowable power dissipation is the lower value of either the absolute maximum total power dissipation or derated power (PDER). |
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