LTM8049 datasheet(5/32 Pages) LINER

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LTM4653

Rev 0

For more information www.analog.com

The l denotes the specifications which apply over the specified internal

operating temperature range (Note 2). TA = 25°C, Test Circuit, VIN = SVIN = 48V, EXTVCC = 24V, RUN = 3.3V, RISET = 480k,

RfSET = 57.6kΩ, fSW = 1.5MHz (CLKIN driven with 1.2MHz clock signal) unless otherwise noted.

Note 1: Stresses beyond those listing under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating conditions for extended periods may affect device

reliability and lifetime.

Note 2: The LTM4653 is tested under pulsed load conditions such that

TJ ≈ TA. The LTM4653E is guaranteed to meet performance specifications

over the 0°C to 125°C internal operating temperature range. Specifications

over the full –40°C to 125°C internal operating temperature range are

assured by design, characterization and correlation with statistical process

controls.The LTM4653I is guaranteed to meet specifications over the full

internal operating temperature range. Note that the maximum ambient

temperature consistent with these specifications is determined by specific

operating conditions in conjunction with board layout, the rated package

thermal resistance and other environmental factors.

Note 3: See output current derating curves for different VIN, VOUT, and TA,

located in the Applications Information section.

Note 4: Minimum on-time, VIN Overvoltage Lockout and Overvoltage

Lockout Hysteresis, and EXTVCC Switchover Threshold are tested at wafer

sort.

Note 5: To ensure minimum on time criteria is met, VOUT(0.5VDC) high-line

regulation is tested at 13.2VIN, with fSET and CLKIN open circuit. See the

Applications Information section.

Note 6. See Applications Information Section for Dropout Criteria.

Note 7. This IC includes overtemperature protection that is intended

to protect the device during momentary overload conditions. Junction

temperature will exceed 125°C when overtemperature protection is active.

Continuous operation above the specified maximum operating junction

temperature may impair device reliability.

Note 8. The INTVCC Abs Max peak output current is specified as the sum

of current drawn by circuits internal to the module biased off of INTVCC

and current drawn by external circuits biased off of INTVCC. See the

Applications Information section.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX UNITS

Temperature Sensor

∆VTEMP

Temperature Sensor Forward Voltage,

VTEMP+ – VTEMP–

ITEMP+ = 100µA and ITEMP– = –100μA at TA = 25°C

0.6

TC∆V(TEMP)

∆VTEMP Temperature Coefficient

–2.0

mV/°C

ELECTRICAL CHARACTERISTICS

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