LTM4644 datasheet(5/38 Pages) LINER

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LTM4650A

4650afb

For more information www.linear.com/LTM4650A

ELECTRICAL CHARACTERISTICS

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

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

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: The LTM4650A is tested under pulsed load conditions such that

TJ ≈ TA. The LTM4650AE is guaranteed to meet specifications from

0°C to 125°C internal temperature. Specifications over the –40°C to

125°C internal operating temperature range are assured by design,

characterization and correlation with statistical process controls. The

LTM4650AI is guaranteed over the full –40°C to 125°C 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

impedance and other environmental factors.

Note 3: Two outputs are tested separately and the same testing condition

is applied to each output.

Note 4: The switching frequency is programmable from 250kHz to 780kHz.

Note 5: LTM4650A device is designed to operate from 250kHz to 780kHz

Note 6: These parameters are tested at wafer sort.

Note 7: See output current derating curve for different ambient

temperature.

Note 8: Total DC output voltage error includes all errors over

temperature – reference, line and load regulation as well as the tolerance

of the integrated top feedback resistor.

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