LTM4619EVPBF datasheet(4/24 Pages) LINER

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LTM4619

4619f

ELECTRICAL CHARACTERISTICS

TYPICAL PERFORMANCE CHARACTERISTICS

The

l denotes the speciﬁcations which apply over the full internal

operating temperature range, otherwise speciﬁcations are at TA = 25°C, VIN = 12V. Per typical application in Figure 18. Speciﬁed as

each channel. (Note 3)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

fNOM

Nominal Frequency

VFREQ = 1.2V

450

500

550

kHz

fLOW

Lowest Frequency

VFREQ = 0V

210

250

290

kHz

fHIGH

Highest Frequency

VFREQ ≥ 2.4V

700

780

860

kHz

RMODE/PLLIN

MODE/PLLIN Input Resistance

250

kΩ

IFREQ

Frequency Setting

Sinking Current

Sourcing Current

fMODE > fOSC

fMODE < fOSC

–13

μA

VRUN1, 2

RUN Pin ON/OFF Threshold

RUN Rising

RUN Falling

1.1

1.02

1.22

1.14

1.35

1.27

RFB1, RFB2

Resistor Between VOUT and VFB

Pins for Each Channel

60.1

60.4

60.7

kΩ

VPGL

PGOOD Voltage Low

IPGOOD = 2mA

0.1

0.3

IPGOOD

PGOOD Leakage Current

VPGOOD = 5V

±2

μA

ΔVPGOOD

PGOOD Range

VFB Ramping Negative

VFB Ramping Positive

–5

–7.5

7.5

–10

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 LTM4619E 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 LTM4619I 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: The two outputs are tested separately and the same testing

condition is applied to each output.

Note 4: 100% tested at wafer level only.

Note 5: See Output Current Derating curves for different VIN, VOUT and TA.

Efﬁciency vs Load Current with

5VIN (f = 500kHz for 0.8VOUT,

1.2VOUT and 1.5VOUT)

Efﬁciency vs Load Current with

12VIN (f = 500kHz for 1.2VOUT and

1.5VOUT)

Efﬁciency vs Load Current with

24VIN (f = 500kHz for 1.5VOUT)

(Refer to Figures 18 and 19)

LOAD CURRENT (A)

2.5

1.5

3.5

4619 G01

0.5

0.8VOUT

1.2VOUT

1.5VOUT

2.5VOUT

3.3VOUT

LOAD CURRENT (A)

2.5

1.5

3.5

4619 G02

0.5

5VOUT

1.2VOUT

1.5VOUT

2.5VOUT

3.3VOUT

LOAD CURRENT (A)

2.5

1.5

3.5

4619 G03

0.5

5VOUT

1.5VOUT

2.5VOUT

3.3VOUT

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