LTM4615 datasheet(4/24 Pages) LINER

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LTM4615

4615f

ELECTRICAL CHARACTERISTICS The l denotes the speciﬁcations which apply over the full internal

operating temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = 5V, LDO_IN = 1.2V unless otherwise noted.

Per Typical Application Figure 12.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VFB3

FB3 Internal Reference Voltage

1mA ≤ IOUT ≤ 1.5A, 1.14V ≤ VLDO_IN ≤ 3.5V,

BOOST3 = 5V, 1V ≤ VOUT ≤ 2.59V

0.397

0.395

0.4

0.404

0.405

VLDO_OUT

Output Voltage Range

0.4

2.6

VDO

Dropout Voltage

VLDO_IN = 1.5V, VFB3 = 0.38V, IOUT = 1.5A (Note 4)

100

250

LDO_RHI

LDO Top Feedback Resistor

4.96

4.99

5.02

kΩ

IOUT

Output Current

VEN3 = 1.2V

1.5

ILIM

Output Current Limit

(Note 5)

2.5

Output Voltage Noise

Frequency = 10Hz to 1MHz, ILOAD = 1A

300

μRMS

VIH_EN3

EN3 Input High Voltage

1.14V ≤ VLDO_IN ≤ 3.5V

VIL_EN3

EN3 Input Low Voltage

1.14V ≤ VLDO_IN ≤ 3.5V

0.4

IIN_EN3

EN3 Input Current

–1

μA

VOL_PGOOD3

PGOOD Low Voltage

IPGOOD3 = 2mA

0.1

0.4

PGOOD Threshold

Output Threshold

Relative to VFB3

PGOOD3 High to Low

PGOOD3 Low to High

–14

–4

–12

–3

–10

–2

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 LTM4615E 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 LTM4615I is guaranteed to meet speciﬁcations over the full

internal operating temperature range. Note that the maximum ambient

temperature is determined by speciﬁc operating conditions in conjunction

with board layout, the rated package thermal resistance and other

environmental factors.

Note 3: Minimum operating voltage required for regulation is:

VIN ≥ VOUT(MIN) + VDROPOUT

Note 4: Dropout voltage is the minimum input to output differential needed

to maintain regulation at a speciﬁed output current. In dropout the output

voltage will be equal to VIN – VDROPOUT.

Note 5: The IC has overtemperature protection that is intended to protect

the device during momentary overload conditions. Junction temperatures

will exceed 125°C when overtemperature is activated. Continuous

overtemperature activation can impair long-term reliability.

Note 6: See output current derating curves for different VIN, VOUT and TA.

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