LTM4652

5

Rev. 0

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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 LTM4652 is tested under pulsed-load conditions such that

TJ ≈ TA. The LTM4652E is guaranteed to meet performance specifications

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

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

by design, characterization and correlation with statistical process

controls. The LTM4652I is guaranteed to meet specifications 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 resistance and other

environmental factors.

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

is applied to each output.

Note 4: The LTM4652 device is designed to operate best from 400kHz

to 780kHz. For some applications such as 1VOUT, operation at 300kHz is

acceptable—but not ATE-tested in production.

Note 5: These parameters are tested at wafer sort.

Note 6: See output current derating curve for different ambient

temperature.

Note 7: 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.

Note 8: Transient response and load step performance are layout

dependent and thus application-specific. Typical values are

reported from lab Demo Board evaluation. Evaluation in application

demonstrates capability.

ELECTRICAL CHARACTERISTICS The

l

denotes the specifications which apply over the specified internal

operating temperature range. Specified as each individual output channel (Note 3). TA = 25°C (Note 2), VIN = 12V, VRUN1, VRUN2 at 5V

and IOUT1, IOUT2 at 0A unless otherwise noted. Per the typical application in Figure 31.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VOUT(MAX)

Maximum Output Voltage

IDIFFOUT = 300µA

INTVCC – 1.4

V

GBW

Gain Bandwidth Product

3

MHz

�VTEMP

Diode Connected PNP

ITEMP+ = 100µA, ITEMP– = –100µA

0.6

V

TC

Temperature Coefficient

l

–2.2

mV/C

η

Ideality Factor

1.004