LTM4628IY-PBF(RevC) Ver la hoja de datos (PDF) - Linear Technology

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LTM4628IY-PBF
(Rev.:RevC)

Dual 8A or Single 16A DC/DC µModule Regulator

Linear Technology 

LTM4628

Electrical Characteristics The l denotes the specifications which apply over the full internal

operating temperature range (Note 2). Specified as each individual output channel. TA = 25°C, VIN = 12V and VRUN1, VRUN2 at 5V

unless otherwise noted, per the typical application in Figure 28.

SYMBOL

PARAMETER

CONDITIONS

VIN

VOUT

VOUT1(DC),

VOUT2(DC)

Input DC Voltage

Output Voltage

Output Voltage, Total Variation with

Line and Load

Input Specifications

l

l

CIN = 22µF × 3, COUT = 100µF × 1

Ceramic, 470µF POSCAP, MODE_PLLIN =

GND, RFB1, RFB2 = 40.2k, VIN = 4.5V to 26.5V, l

IOUT = 0A to 8A

VRUN1, VRUN2

VRUN1HYS, VRUN2HYS

IINRUSH(VIN)

RUN Pin On/Off Threshold

RUN Pin On Hysteresis

Input Inrush Current at Start-Up

IQ(VIN)

Input Supply Bias Current

IS(VIN)

Input Supply Current

Output Specifications

RUN Rising

IOUT = 0A, CIN = 22µF × 3,

COUT = 100µF , 470µF POSCAP VOUT1 = 1.5V,

VOUT2 = 1.5V, VIN = 12V, TRACK = 0.01µF

VIN = 12V, VOUT = 1.5V, Burst Mode Operation

VIN = 12V, VOUT = 1.5V, Pulse-Skipping Mode

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

Shutdown, RUN = 0, VIN = 12V

VIN = 4.75V, VOUT = 1.5V, IOUT = 8A

VIN = 12V, VOUT = 1.5V, IOUT = 8A

VIN = 26.5V, VOUT = 1.5V, IOUT = 8A

IOUT1(DC), IOUT2(DC) Output Continuous

Current Range

VIN = 12V, VOUT = 1.5V (Note 7)

ΔVOUT1(LINE)/VOUT1

ΔVOUT2(LINE)/VOUT2

ΔVOUT1(LOAD)/VOUT1

ΔVOUT2(LOAD)/VOUT2

VOUT1(AC), VOUT2(AC)

Line Regulation Accuracy

Load Regulation Accuracy

Output Ripple Voltage

fS (Each Channel)

fSYNC

(Each Channel)

Output Ripple Voltage Frequency

SYNC Capture Range

VOUT = 1.5V, VIN from 4.5V to 26.5V

l

IOUT = 0A for Each Output,

For Each Output, VOUT = 1.5V, 0A to 8A

l

VIN = 12V (Note 7)

IOUT = 0A, COUT = 100µF X5R Ceramic,

470µF POSCAP

VIN = 12V, VOUT = 1.5V

VIN = 12V, VOUT = 1.5V, fSET = 2.5V (Note 4)

∆VOUTSTART

(Each Channel)

tSTART

(Each Channel)

∆VOUT(LS)

(Each Channel)

tSETTLE

(Each Channel)

IOUT(PK)

(Each Channel)

Turn-On Overshoot

Turn-On Time

Peak Deviation for Dynamic Load

Settling Time for Dynamic Load Step

Output Current Limit

COUT = 100µF X5R Ceramic, 470µF POSCAP,

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

COUT = 100µF X5R Ceramic, 470µF POSCAP,

No Load, TRACK/SS with 0.01µF to GND,

VIN = 12V

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

COUT = 22µF × 3 X5R Ceramic, 470µF POSCAP

VIN = 12V, VOUT = 1.5V

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

VIN = 12V, COUT = 100µF, COUT = 470µF

VIN = 12V, VOUT = 1.5V

Control Section

VFB1, VFB2

Voltage at VFB Pins

IOUT = 0A, VOUT = 1.5V

l

IFB1, IFB2

Leakage Current of VFB1, VFB2

(Note 6)

VOVL

Feedback Overvoltage Lockout

l

MIN

4.5

0.6

1.477

1.1

0

400

0.592

0.64

TYP MAX UNITS

26.5

V

5.5

V

1.5 1.523

V

1.25 1.40

V

150

mV

1

A

5

mA

15

mA

65

mA

60

µA

2.9

A

1.18

A

0.575

A

8

A

0.010 0.04 %/V

0.15 0.3

%

15

mVP-P

780

kHz

780

kHz

10

mV

5

ms

30

mV

20

µs

15

A

0.600

–5

0.66

0.606

–20

0.68

V

nA

V

4628fc

3

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