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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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LTM8003 데이터시트(PDF) 3 Page - Linear Technology |
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LTM8003 데이터시트(HTML) 3 Page - Linear Technology |
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3 / 30 page  LTM8003 3 8003fc For more information www.linear.com/LTM8003 ELECTRICAL CHARACTERISTICS Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: Unless otherwise noted, the absolute minimum voltage is zero. Note 3: The LTM8003I is guaranteed to meet specifications over the full –40°C to 125°C internal operating temperature range. The LTM8003H is guaranteed to meet specifications over the full –40°C to 150°C internal operating temperature range. Note that the maximum internal temperature is determined by specific operating conditions in conjunction with board layout, the rated package thermal resistance and other environmental factors. High junction temperatures degrade operating lifetimes. Operating lifetime is derated at junction temperatures greater than 125°C. PARAMETER CONDITIONS MIN TYP MAX UNITS Minimum Input Voltage VIN Rising l 3.4 V Output DC Voltage LTM8003, RFB Open LTM8003, RFB = 5.62k, VIN = 40V LTM8003-3.3 0.97 18 3.3 V Peak Output DC Current VOUT = 3.3V, fSW =1MHz 6 A Quiescent Current into VIN RUN = 0V BIAS = 0V, No Load, SYNC = 0V, Not Switching 3 8 µA µA Quiescent Current into BIAS BIAS = 5V, RUN = 0V BIAS = 5V, No Load, SYNC = 0V, Not Switching BIAS = 5V, VOUT = 3.3V, IOUT = 3.5A, fSW =1MHz 1 5 12 µA µA mA Line Regulation 5.5V < VIN < 36V, IOUT = 1A 0.5 % Load Regulation 0.1A < IOUT < 3.5A 0.5 % Output Voltage Ripple IOUT = 3.5A 10 mV Switching Frequency RT = 232k RT = 41.2k RT = 10.7k 200 0.95 3 kHz MHz MHz Voltage at FB LTM8003 l 950 970 980 mV Minimum BIAS Voltage (Note 5) 3.2 V RUN Threshold Voltage 0.9 1.06 V RUN Current 1 µA TR/SS Current TR/SS = 0V 2 µA TR/SS Pull Down TR/SS = 0.1V 200 PG Threshold Voltage at FB (Upper) FB Falling (Note 6, LTM8003) 1.05 V PG Threshold Voltage at FB (Lower) FB Rising (Note 6, LTM8003) 0.89 V PG Threshold Voltage at VOUT (Upper) VOUT Falling (Note 6, LTM8003-3.3) 3.57 V PG Threshold Voltage at VOUT (Lower) VOUT Rising (Note 6, LTM8003-3.3) 3.03 V PG Leakage Current PG = 42V 1 µA PG Sink Current PG = 0.1V 150 µA SYNC Threshold Voltage Synchronization 0.4 1.5 V SYNC Voltage To Enable Spread Spectrum 2.9 4.2 V SYNC Current SYNC = 0V 35 µA The l denotes the specifications which apply over the specified operating temperature range, otherwise specifications are at TJ = 25°C. VIN =12V, RUN = 2V, unless otherwise noted. Note 4: The LTM8003 contains overtemperature protection that is intended to protect the device during momentary overload conditions. The internal temperature exceeds the maximum operating junction temperature when the overtemperature protection is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability. Note 5: Below this specified voltage, internal circuitry will draw power from VIN. Note 6: PG transitions from low to high. |
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