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LTM4601HV

12A 28VIN DC/DC µModule Regulator with PLL, Output Tracking and Margining

Linear Technology 

LTM4601HV

ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the –40°C to 85°C

temperature range (Note 2), otherwise specifications are at TA = 25°C, VIN = 12V, per typical application (front page) configuration,

RSET = 40.2k.

SYMBOL

PARAMETER

CONDITIONS

MIN TYP

MAX UNITS

VIN(DC)

Input DC Voltage

l 4.5

28

V

VOUT(DC)

Output Voltage (With Remote

CIN = 10µF ×3, COUT = 200µF, RSET = 40.2k

Sense Amp)

VIN = 12V, VOUT = 1.5V, IOUT = 0

l 1.478 1.5

1.522

V

Input Specifications

VIN(UVLO)

IINRUSH(VIN)

Undervoltage Lockout Threshold

Input Inrush Current at Startup

IQ(VIN,NO LOAD) Input Supply Bias Current

IOUT = 0A

IOUT = 0A. VOUT = 1.5V

VIN = 5V

VIN = 12V

VIN = 12V, No Switching

VIN = 12V, VOUT = 1.5V, Switching Continuous

VIN = 5V, No Switching

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

Shutdown, RUN = 0, VIN = 12V

3.2

4

V

0.6

A

0.7

A

3.8

mA

38

mA

2.5

mA

42

mA

22

µA

IS(VIN)

Input Supply Current

INTVCC

VIN = 12V, RUN > 2V

Output Specifications

VIN = 12V, VOUT = 1.5V, IOUT = 12A

VIN = 12V, VOUT = 3.3V, IOUT = 12A

VIN = 5V, VOUT = 1.5V, IOUT = 12A

No Load

1.81

A

3.63

A

4.29

A

4.7

5

5.3

V

IOUTDC

Output Continuous Current Range VIN = 12V, VOUT = 1.5V (Note 5)

0

12

A

ΔVOUT(LINE)

VOUT

Line Regulation Accuracy

VOUT = 1.5V, IOUT = 0A, VIN from 4.5V to 28V

l

0.3

%

ΔVOUT(LOAD)

VOUT

Load Regulation Accuracy

VOUT = 1.5V, IOUT = 0A to 12A, with RSA (Note 5)

VIN = 5V

l

VIN = 12V

l

0.25

%

0.25

%

VOUT(AC)

Output Ripple Voltage

IOUT = 0A, COUT = 2× 100µF X5R Ceramic

VIN = 12V, VOUT = 1.5V

VIN = 5V, VOUT = 1.5V

20

mVP-P

18

mVP-P

fS

Output Ripple Voltage Frequency IOUT = 5A, VIN = 12V, VOUT = 1.5V

850

kHz

ΔVOUT(START) Turn-On Overshoot

COUT = 200µF, VOUT = 1.5V, IOUT = 0A,

TRACK/SS = 10nF

VIN = 12V

VIN = 5V

20

mV

20

mV

tSTART

Turn-On Time

COUT = 200µF, VOUT = 1.5V, TRACK/SS = Open,

IOUT = 1A Resistive Load

VIN = 12V

VIN = 5V

0.5

ms

0.5

ms

ΔVOUTLS

Peak Deviation for Dynamic Load

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

COUT = 2 × 22µF Ceramic, 470µF 4V Sanyo

POSCAP

VIN = 12V

VIN = 5V

35

mV

35

mV

tSETTLE

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

VIN = 12V

25

µs

IOUTPK

Output Current Limit

COUT = 200µF Ceramic

VIN = 12V, VOUT = 1.5V

VIN = 5V, VOUT = 1.5V

17

A

17

A

4601hvfb

3

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