LTM4638 ELECTRICAL CHARACTERISTICSThe l denotes the specifications which apply over the specified internaloperating temperature range (Note 2), otherwise specifications are at TA = 25°C. VIN = 12V per the typical application shown on thefront page. SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS VINTVCC Internal VCC Voltage VIN = 4V to 20V 3.2 3.3 3.4 V fOSC Oscillator Frequency 600 kHz Note 1: Stresses beyond those listed under Absolute Maximum Ratings maximum ambient temperature consistent with these specifications is may cause permanent damage to the device. Exposure to any Absolute determined by specific operating conditions in conjunction with board Maximum Rating condition for extended periods may affect device layout, the rated package thermal resistance and other environmental reliability and lifetime. factors. Note 2: The LTM4638 is tested under pulsed load conditions such that Note 3: See output current derating curves for different VIN, VOUT and TA. TJ ≈ TA. The LTM4638E is guaranteed to meet performance specifications Note 4: 100% tested at wafer level. over the 0°C to 125°C internal operating temperature range. Specifications Note 5: This IC includes overtemperature protection that is intended over the –40°C to 125°C internal operating temperature range are assured to protect the device during momentary overload conditions. Junction by design, characterization and correlation with statistical process temperature will exceed 125°C when overtemperature protection is active. controls. The LTM4638I is guaranteed to meet specifications over the Continuous operation above the specified maximum operating junction full –40°C to 125°C internal operating temperature range. Note that the temperature may impair device reliability. Rev. B 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Package Description Revision History Package Photo Related Parts
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