LTM8045

3

8045fa

For more information www.linear.com/8045

ELECTRICAL CHARACTERISTICS

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 LTM8045E is guaranteed to meet performance specifications

from 0°C to 125°C. Specifications over the –40°C to 125°C internal

temperature range are assured by design, characterization and correlation

with statistical process controls. LTM8045I is guaranteed to meet

specifications over the full –40°C to 125°C internal operating temperature

range. The LTM8045MP is guaranteed to meet specifications over the

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input DC Voltage

l

2.8

18

V

Positive Output DC Voltage

2.5

15

V

V

Negative Output DC Voltage

–2.5

–15

V

V

Continuous Output DC Current

0.7

0.375

A

A

Not Switching

0

10

1

µA

mA

Line Regulation

0.6

%

Load Regulation

0.2

%

Output RMS Voltage Ripple

4

mV

Input Short-Circuit Current

200

mA

Switching Frequency

l

l

1800

180

2000

200

2200

220

kHz

kHz

Voltage at FB Pin (Positive Output)

Voltage at FB Pin (Negative Output)

l

l

1.195

0

1.215

5

1.235

12

V

mV

Current into FB Pin (Positive Output)

Current into FB Pin (Negative Output)

l

l

81

81

83.3

83.3

86

86.5

µA

µA

RUN Pin Threshold Voltage

RUN Pin Rising

RUN Pin Falling

1.235

1.32

1.29

1.385

V

V

RUN Pin Current

9.7

40

11.6

0

60

13.4

0.1

µA

µA

µA

SS Sourcing Current

SS = 0V

5

8

13

µA

Synchronization Frequency Range

200

2000

kHz

Synchronization Duty Cycle

35

65

%

SYNC Input Low Threshold

0.4

V

SYNC Input High Threshold

1.3

V

full –55°C to 125°C internal operating temperature range. Note that

the maximum internal temperature is determined by specific operating

conditions in conjunction with board layout, the rated package thermal

resistance and other environmental factors.

Note 3: This μModule converter includes overtemperature protection that

is intended to protect the device during momentary overload conditions.

Internal temperature will exceed 125°C when overtemperature protection

is active. Continuous operation above the specified maximum internal

operating junction temperature may impair device reliability.