LTM4602 データシートの表示（PDF） - Linear Technology

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LTM4602

6A High Effi ciency DC/DC µModule

Linear Technology 

LTM4602

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

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

SYMBOL

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

IS(VIN)

Input Supply Current

Output Specifications

VIN = 12V, VOUT = 1.5V, IOUT = 6A

VIN = 12V, VOUT = 3.3V, IOUT = 6A

VIN = 5V, VOUT = 1.5V, IOUT = 6 A

0.88

A

1.80

A

2.08

A

IOUTDC

Output Continuous Current Range

VIN = 12V, VOUT = 1.5V

(See Output Current Derating Curves for

Different VIN, VOUT and TA)

0

6

A

ΔVOUT(LINE)

VOUT

Line Regulation Accuracy

VOUT = 1.5V, IOUT = 0A, FCB = 0V,

l

VIN = 4.5V to 20V

0.15

0.3

%

ΔVOUT(LOAD)

VOUT

Load Regulation Accuracy

VOUT = 1.5V, IOUT = 0A to 6A, FCB = 0V,

VIN = 5V, VIN = 12V (Note 3)

l

±0.25 ±0.5

%

±0.15 ±1.0

%

VOUT(AC)

fs

tSTART

ΔVOUTLS

Output Ripple Voltage

Output Ripple Voltage Frequency

Turn-On Time

Voltage Drop for Dynamic Load Step

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

VOUT = 1.5V, IOUT = 6A, FCB = 0V

VOUT = 1.5V, IOUT = 1A

VIN = 12V

VIN = 5V

VOUT = 1.5V, Load Step: 0A/μs to 3A/μs

COUT = 22μF 6.3V, 330μF 4V POSCAP,

See Table 2

10

15

mVP-P

850

kHz

0.5

ms

0.7

ms

30

mV

tSETTLE

IOUTPK

Control Stage

Settling Time for Dynamic Load Step

Output Current Limit

Load: 10% to 50% to 10% of Full Load

Output Voltage in Foldback

VIN = 12V, VOUT = 1.5V

VIN = 5V, VOUT = 1.5V

25

μs

9

A

9

A

VOSET

VRUN/SS

IRUN(C)/SS

IRUN(D)/SS

VIN – SVIN

IEXTVCC

RFBHI

VFCB

IFCB

PGOOD Output

Voltage at VOSET Pin

RUN ON/OFF Threshold

Soft-Start Charging Current

Soft-Start Discharging Current

Current into EXTVCC Pin

Resistor Between VOUT and VOSET Pins

Forced Continuous Threshold

Forced Continuous Pin Current

IOUT = 0A, VOUT = 1.5V

VRUN/SS = 0V

VRUN/SS = 4V

EXTVCC = 0V, FCB = 0V

EXTVCC = 5V, FCB = 0V, VOUT = 1.5V,

IOUT = 0A

VFCB = 0.6V

l 0.591 0.6 0.609

V

0.8

1.5

2

V

–0.5 –1.2

–3

μA

0.8

1.8

3

μA

100

mV

16

mA

100

kΩ

0.57

0.6

0.63

V

–1

–2

μA

ΔVOSETH

ΔVOSETL

ΔVOSET(HYS)

VPGL

PGOOD Upper Threshold

PGOOD Lower Threshold

PGOOD Hysteresis

PGOOD Low Voltage

VOSET Rising

VOSET Falling

VOSET Returning

IPGOOD = 5mA

7.5

10

12.5

%

–7.5 –10 –12.5

%

2

%

0.15

0.4

V

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 LTM4602E is guaranteed to meet performance specifications

from 0°C to 85°C. Specifications over the –40°C to 85°C operating

temperature range are assured by design, characterization and correlation

with statistical process controls. The LTM4602I is guaranteed over the

–40°C to 85°C temperature range.

Note 3: Test assumes current derating versus temperature.

4602fa

3

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