LTM4616 datasheet(3/24 Pages) LINER

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LTM4616

4616fa

ELECTRICAL CHARACTERISTICS The ● denotes the speciﬁcations which apply over the –40°C to 125°C

internal operating temperature range. TA = 25°C, VIN = 5V unless otherwise noted. Per the typical application in Figure 18. Speciﬁed

as each channel (Note 3).

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

IQ(VIN1, VIN2)

Input Supply Bias Current

VIN = 3.3V, VOUT = 1.5V, No Switching, Mode = VIN

VIN = 3.3V, VOUT = 1.5V, No Switching, Mode = 0V

VIN = 3.3V, VOUT = 1.5V, Switching Continuous

400

1.15

μA

VIN = 5V, VOUT = 1.5V, No Switching, Mode = VIN

VIN = 5V, VOUT = 1.5V, No Switching, Mode = 0V

VIN = 5V, VOUT = 1.5V, Switching Continuous

450

1.3

μA

Shutdown, RUN = 0, VIN = 5V

μA

IS(VIN1, VIN2)

Input Supply Current

VIN = 3.3V, VOUT = 1.5V, IOUT = 8A

VIN = 5V, VOUT = 1.5V, IOUT = 8A

4.5

2.93

Output Speciﬁcations

IOUT1(DC), IOUT2(DC)

Output Continuous Current Range

(Note 4)

VOUT = 1.5V

VIN = 3.3V, 5.5V

VIN = 2.7V

ΔVOUT1(LINE)/VOUT1

ΔVOUT2(LINE)/VOUT2

Line Regulation Accuracy

VOUT = 1.5V, VIN from 2.7V to 5.5V, IOUT = 0A

●

0.1

0.25

%/V

ΔVOUT1(LOAD)/VOUT1

ΔVOUT2(LOAD)/VOUT2

Load Regulation Accuracy

VOUT = 1.5V (Note 4)

VIN = 3.3V, 5.5V, ILOAD = 0A to 8A

VIN = 2.7V, ILOAD = 0A to 5A

●

0.3

0.5

VOUT1(AC), VOUT2(AC) Output Ripple Voltage

IOUT = 0A, COUT = 100μF X5R Ceramic, VIN = 5V,

VOUT = 1.5V

mVP-P

fS1, fS2

Switching Frequency

IOUT = 8A, VIN = 5V, VOUT = 1.5V

1.25

1.5

1.75

MHz

fSYNC1, fSYNC2

SYNC Capture Range

0.75

2.25

MHz

ΔVOUT1(START),

ΔVOUT2(START)

Turn-On Overshoot

COUT = 100μF, VOUT = 1.5V, IOUT = 0A

VIN = 3.3V

VIN = 5V

tSTART1, tSTART2

Turn-On Time

COUT = 100μF, VOUT = 1.5V, VIN = 5V,

IOUT = 1A Resistive Load, Track = VIN

100

μs

ΔVOUT1(LS),

ΔVOUT2(LS)

Peak Deviation for Dynamic Load

Load: 0% to 50% to 0% of Full Load,

COUT = 100μF Ceramic x2, 470μF POSCAP,

VIN = 5V, VOUT = 1.5V

tSETTLE1, tSETTLE2

Settling Time for Dynamic Load

Step

Load: 0% to 50% to 0% of Full Load, VIN = 5V,

VOUT = 1.5V, COUT = 100μF

μs

IOUT1(PK), IOUT2(PK)

Output Current Limit

COUT = 100μF

VIN = 2.7V, VOUT = 1.5V

VIN = 3.3V, VOUT = 1.5V

VIN = 5V, VOUT = 1.5V

Control Section

FB1, FB2

Voltage at FB Pin

IOUT = 0A, VOUT = 1.5V, VIN = 2.7V to 5.5V

●

0.590

0.587

0.596

0.602

0.606

SS Delay

Internal Soft-Start Delay

μs

IFB

0.2

μA

VRUN1, VRUN2

RUN Pin On/Off Threshold

RUN Rising

RUN Falling

1.4

1.3

1.55

1.4

1.7

1.5

TRACK1, TRACK2

Tracking Threshold (Rising)

Tracking Threshold (Falling)

Tracking Disable Threshold

RUN = VIN

RUN = 0V

0.57

0.18

VIN – 0.5

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