Datasheet LTM8045 (Analog Devices) - 3

LTM8045
e lecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. RUN = 12V unless otherwise specified. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Input DC Voltage l 2.8 18 V Positive Output DC Voltage I – OUT = 0.7A, RFB = 15.4kΩ, VOUT Grounded 2.5 V I – OUT = 0.375A, RFB =165kΩ, VOUT Grounded 15 V Negative Output DC Voltage I + OUT = 0.7A, RFB = 30.0kΩ, VOUT Grounded –2.5 V I + OUT = 0.375A, RFB =178kΩ, VOUT Grounded –15 V Continuous Output DC Current VIN = 12V, VOUT = 2.5V or –2.5V 0.7 A VIN = 12V, VOUT = 15V or –15V 0.375 A VIN Quiescent Current VRUN = 0V 0 1 µA Not Switching 10 mA Line Regulation 4V ≤ VIN ≤ 18V, IOUT = 0.2A 0.6 % Load Regulation 0.01A ≤ IOUT ≤ 0.58A 0.2 % Output RMS Voltage Ripple VIN = 12V, VOUT = 5V, IOUT = 580mA, 100kHz to 4MHz 4 mV Input Short-Circuit Current V + – OUT = VOUT = 0V, VIN = 12V 200 mA Switching Frequency RT = 45.3k l 1800 2000 2200 kHz RT = 464k l 180 200 220 kHz Voltage at FB Pin (Positive Output) l 1.195 1.215 1.235 V Voltage at FB Pin (Negative Output) l 0 5 12 mV Current into FB Pin (Positive Output) l 81 83.3 86 µA Current into FB Pin (Negative Output) l 81 83.3 86.5 µA RUN Pin Threshold Voltage RUN Pin Rising 1.32 1.385 V RUN Pin Falling 1.235 1.29 V RUN Pin Current VRUN = 3V 40 60 µA VRUN = 1.3V 9.7 11.6 13.4 µA VRUN = 0V 0 0.1 µA SS Sourcing Current SS = 0V 5 8 13 µA Synchronization Frequency Range 200 2000 kHz Synchronization Duty Cycle 35 65 % SYNC Input Low Threshold 0.4 V SYNC Input High Threshold 1.3 V
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings full –55°C to 125°C internal operating temperature range. Note that may cause permanent damage to the device. Exposure to any Absolute the maximum internal temperature is determined by specific operating Maximum Rating condition for extended periods may affect device conditions in conjunction with board layout, the rated package thermal reliability and lifetime. resistance and other environmental factors.
Note 2:
The LTM8045E is guaranteed to meet performance specifications
Note 3:
This μModule converter includes overtemperature protection that from 0°C to 125°C. Specifications over the –40°C to 125°C internal is intended to protect the device during momentary overload conditions. temperature range are assured by design, characterization and correlation Internal temperature will exceed 125°C when overtemperature protection with statistical process controls. LTM8045I is guaranteed to meet is active. Continuous operation above the specified maximum internal specifications over the full –40°C to 125°C internal operating temperature operating junction temperature may impair device reliability. range. The LTM8045MP is guaranteed to meet specifications over the 8045fc For more information www.linear.com/LTM8045 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Photo Package Description Revision History Typical Application Related Parts