Datasheet LTM8049 (Analog Devices) - 3

link to page 10 LTM8049
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified operating temperature range (Notes 2, 3), otherwise specifications are at TA = 25°C. RUN = 2V unless otherwise specified. PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Operating Voltage l 2.6 V Positive Output DC Voltage IOUT = 50mA, RFB = 15.4k, VOUTN Grounded 2.5 V IOUT = 50mA, RFB = 274k, VOUTN Grounded 24 V Negative Output DC Voltage IOUT = 50mA, RFB = 30.1k, VOUTP Grounded –2.5 V IOUT = 50mA, RFB = 287k, VOUTP Grounded –24 V Maximum Continuous Output DC Current VIN = 12V, VOUT = 5V or –5V 1 A VIN = 12V, VOUT = 24 or –24V 0.25 A VIN Quiescent Current VRUN = 0V 0 2 µA VRUN = 2V, No Load 10 mA Line Regulation 4 ≤ VIN ≤ 20V, IOUT = 0.6A 0.1 % Load Regulation 0 ≤ IOUT ≤ 1A 0.3 % Switching Frequency RT = 31.6k l 2100 2500 2900 kHz RT = 412k l 160 200 240 kHz Voltage at FBX Pin Positive Output l 1.185 1.204 1.22 V Negative Output l 2 7 16 mV Current into FBX Pin Positive Output l 81 83.3 85.6 µA Negative Output l 81 83.3 85.6 µA RUN pin Threshold Voltage RUN Pin Rising 1.31 1.4 V RUN Pin Falling 1.21 1.27 V RUN Pin Current VRUN = 3V 45 65 µA VRUN = 1.3V 10.1 12.1 14.1 µA VRUN = 0V 0 0.1 µA SS Sourcing Current SS = 0V 5.7 8.8 11.7 µA Synchronization Frequency Range 200 2500 kHz SYNC Input Low Threshold 0.4 V SYNC Input High Threshold 1.3 V CLKOUT1 Duty Cycle (Note 5) 50 % CLKOUT Output Voltage (Low) 2k Pull-Up to 2V 0.2 V CLKOUT Output Voltage (High) 2k Pull-Down to GND 1.9 V PG Threshold for Positive Feedback Voltage FBX Rising 1.09 1.2 V PG Threshold for Negative Feedback Voltage FBX Falling 20 120 mV PG Output Voltage Low 100µA into PG, FBX = 1V 150 mV PG Leakage Current PG = 20V, Run = 0V 1 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
This μModule regulator includes overtemperature protection that may cause permanent damage to the device. Exposure to any Absolute is intended to protect the device during momentary overload conditions. Maximum Rating condition for extended periods may affect device Internal temperature will exceed 125°C when overtemperature protection reliability and lifetime. is active. Continuous operation above the specified maximum internal
Note 2:
The LTM8049E is guaranteed to meet performance specifications operating junction temperature may impair device reliability. from 0°C to 125°C. Specifications over the –40°C to 125°C internal
Note 4:
CLKOUTn is intended to drive other circuitry. Do not apply a temperature range are assured by design, characterization and correlation positive or negative voltage or current source to CLKOUT, otherwise with statistical process controls. LTM8049I is guaranteed to meet permanent damage may occur. specifications over the full –40°C to 125°C internal operating temperature
Note 5:
The duty cycle of CLKOUT2 is dependent upon the internal range. Note that the maximum internal temperature is determined by temperature. See the Applications Information section for more details. specific operating conditions in conjunction with board layout, the rated package thermal resistance and other environmental factors. Rev B For more information www.analog.com 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Package Photo Revision History Typical Application Related Parts