LTM4613 datasheet(3/22 Pages) LINER

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LTM8045

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

The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. RUN = 12V unless otherwise specified. (Note 2)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input DC Voltage

2.8

Positive Output DC Voltage

IOUT = 0.7A, RFB = 15.4kΩ, VOUT– Grounded

IOUT = 0.375A, RFB =165kΩ, VOUT– Grounded

2.5

Negative Output DC Voltage

IOUT = 0.7A, RFB = 30.0kΩ, VOUT+ Grounded

IOUT = 0.375A, RFB =178kΩ, VOUT+ Grounded

–2.5

–15

Continuous Output DC Current

VIN = 12V, VOUT = 2.5V or –2.5V

VIN = 12V, VOUT = 15V or –15V

0.7

0.375

VIN Quiescent Current

VRUN = 0V

Not Switching

µA

Line Regulation

4V ≤ VIN ≤ 18V, IOUT = 0.2A

0.6

Load Regulation

0.01A ≤ IOUT ≤ 0.58A

0.2

Output RMS Voltage Ripple

VIN = 12V, VOUT = 5V, IOUT = 580mA, 100kHz to 4MHz

Input Short-Circuit Current

VOUT+ = VOUT– = 0V, VIN = 12V

200

Switching Frequency

RT = 45.3k

RT = 464k

1800

180

2000

200

2200

220

kHz

Voltage at FB Pin (Positive Output)

Voltage at FB Pin (Negative Output)

1.195

1.215

1.235

Current into FB Pin (Positive Output)

Current into FB Pin (Negative Output)

83.3

86.5

µA

RUN Pin Threshold Voltage

RUN Pin Rising

RUN Pin Falling

1.235

1.32

1.29

1.385

RUN Pin Current

VRUN = 3V

VRUN = 1.3V

VRUN = 0V

9.7

11.6

13.4

0.1

µA

SS Sourcing Current

SS = 0V

µA

Synchronization Frequency Range

200

2000

kHz

Synchronization Duty Cycle

SYNC Input Low Threshold

0.4

SYNC Input High Threshold

1.3

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.

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