Datasheet LTM8053, LTM8053-1 (Analog Devices) - 3

LTM8053/LTM8053-1
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified internal operating temperature range, otherwise specifications are at TJ = 25°C. VIN = 12V, RUN = 2V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage VIN Rising l 3.4 V Output DC Voltage RFB Open 0.97 V RFB = 16.9kΩ, VIN = 40V 15 V Peak Output DC Current VOUT = 3.3V, fSW = 1MHz 6 A Quiescent Current Into VIN RUN = 0V 3 µA BIAS = 0V, No Load, SYNC = 0V, Not Switching 300 µA Quiescent Current Into BIAS BIAS = 5V, RUN = 0V 1 µA BIAS = 5V, No Load, SYNC = 0V, Not Switching 275 µA BIAS = 5V, VOUT = 3.3V, IOUT = 3.5A, fSW = 1MHz 12 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 = 232kΩ 200 kHz RT = 41.2kΩ 0.95 MHz RT = 10.7kΩ 3 MHz Voltage at FB 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 Ω PG Threshold Voltage at FB (Upper) FB Falling (Note 6) 1.05 V PG Threshold Voltage at FB (Lower) FB Rising (Note 6) 0.89 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
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings conditions in conjunction with board layout, the rated package thermal may cause permanent damage to the device. Exposure to any Absolute resistance and other environmental factors. Maximum Rating condition for extended periods may affect device
Note 4:
The LTM8053/LTM8053-1 contains overtemperature protection reliability and lifetime. that is intended to protect the device during momentary overload
Note 2:
Unless otherwise noted, the absolute minimum voltage is zero. conditions. The internal temperature exceeds the maximum operating
Note 3:
The LTM8053E/LTM8053E-1 is guaranteed to meet performance junction temperature when the overtemperature protection is active. specifications from 0°C to 125°C internal. Specifications over the full Continuous operation above the specified maximum operating junction –40°C to 125°C internal operating temperature range are assured by temperature may impair device reliability. design, characterization and correlation with statistical process controls. N
ote 5.
Below this specified voltage, internal circuitry will draw power The LTM8053I/LTM8053I-1 is guaranteed to meet specifications over from VIN. the full –40°C to 125°C internal operating temperature range. Note that
Note 6.
PG transitions from low to high. the maximum internal temperature is determined by specific operating Rev D 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 Applications Information Typical Applications Package Description Package Photos Package Description Revision History Typical Application Related Parts