LTM4615 데이터 시트보기 (PDF) - Linear Technology

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LTM4615

Triple Output, Low Voltage DC/DC µModule Regulator

Linear Technology 

LTM4615

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

IINRUSH(VIN)

Input Inrush Current at Start-Up IOUT = 0A, CIN = 22μF, COUT = 100μF, VOUT = 1.5V,

VIN = 5.5V

0.35

IQ(VIN)

Input Supply Bias Current

VIN = 2.375V, VOUT = 1.5V, Switching Continuous

VIN = 5.5V, VOUT = 1.5V, Switching Continuous

Shutdown, RUN = 0, VIN = 5V

IS(VIN)

Input Supply Current

VIN = 2.375V, VOUT = 1.5V, IOUT = 4A

VIN = 5.5V, VOUT = 1.5V, IOUT = 4A

IOUT(DC)

Output Continuous Current Range VIN = 5.5V, VOUT = 1.5V (Note 6)

0

ΔVOUT(LOAD + LINE) Load and Line Regulation Accuracy VOUT = 1.5V, 0A to 4A (Note 6)

VOUT

VIN = 2.375V to 5.5V

l

28

45

7

12

3.2

1.48

4

±1.0 ±1.30

±1.3 ±1.6

VOUT(AC)

Output Ripple Voltage

IOUT = 0A, COUT = 100μF

VIN = 5V, VOUT = 1.5V

12

fs

Output Ripple Voltage Frequency IOUT = 4A, VIN = 5V, VOUT = 1.5V

1.25

ΔVOUT(START)

Turn-On Overshoot

COUT = 100μF, VOUT = 1.5V, RUN/SS = 10nF,

IOUT = 0A

VIN = 3.3V

20

VIN = 5V

20

tSTART

Turn-On Time

COUT = 100μF, VOUT = 1.5V, IOUT = 1A Resistive

Load, TRACK = VIN and RUN/SS = Float

VIN = 5V

0.5

ΔVOUT(LS)

Peak Deviation for Dynamic Load Load: 0% to 50% to 0% of Full Load,

25

COUT = 100μF, VIN = 5V, VOUT = 1.5V

tSETTLE

Settling Time for Dynamic Load Load: 0% to 50% to 0% of Full Load,

10

Step

VIN = 5V, VOUT = 1.5V

IOUT(PK)

Output Current Limit

COUT = 100μF, VIN = 5V, VOUT = 1.5V

8

VFB

Voltage at FB Pin

IOUT = 0A, VOUT = 1.5V

0.790 0.8 0.807

l 0.786 0.8 0.809

IFB

VRUN

ITRACK

VTRACK(OFFSET)

VTRACK(RANGE)

RFBHI

ΔVPGOOD

RPGOOD

VLDO Section

RUN Pin On/Off Threshold

TRACK Pin Current

Offset Voltage

TRACK = 0.4V

Tracking Input Range

Resistor Between VOUT and FB Pins

PGOOD Range

PGOOD Resistance

Open-Drain Pull-Down

0.2

0.6 0.75 0.9

0.2

30

0

0.8

4.96 4.99 5.02

±7.5

90

150

VLDO_IN

IIN(LDO_IN)

IIN(SHDN)

VBOOST3

VBOOST3(UVLO)

Operating Voltage

Operating Current

Shutdown Current

BOOST3 Output Voltage

Undervoltage Lockout

(Note 3)

IOUT = 0mA, VOUT = 1V, EN3 = 1.2V

EN3 = 0V, LDO_IN = 1.5V

EN3 = 1.2V

l 1.14

3.5

1

0.6

20

4.8

5

5.2

4.3

UNITS

A

mA

mA

μA

A

A

A

%

%

mVP-P

MHz

mV

mV

ms

mV

μs

A

V

V

μA

V

μA

mV

V

kΩ

%

Ω

V

mA

μA

V

V

4615f

3

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