LT3511E データシートの表示（PDF） - Linear Technology

部品番号

コンポーネント説明

メーカー

LT3511E

Monolithic High Voltage Isolated Flyback Converter

Linear Technology 

LT3511

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

temperature range, otherwise specifications are at TA = 25°C. VIN = 24V unless otherwise noted.

PARAMETER

CONDITIONS

MIN

TYP MAX

UNITS

Minimum Switching Frequency

40

kHz

TC Current into RREF

BIAS Pin Voltage

RTC = 53.6k

Internally Regulated

9.5

µA

3

3.1

3.2

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 LT3511E is guaranteed to meet performance specifications

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

to 125°C operating junction temperature range are assured by design,

characterization and correlation with statistical process controls. The

LT3511I is guaranteed to meet performance specifications from –40°C to

125°C operating junction temperature range. The LT3511H is guaranteed

to meet performance specifications from –40°C to 150°C operating

junction temperature range. The LT3511MP is guaranteed over the full

–55°C to 150°C operating junction range. High junction temperatures

degrade operating lifetimes. Operating lifetime is derated at junction

temperatures greater than 125°C.

Note 3: Current flows out of the RREF pin.

Note 4: The SW pin is rated to 150V for transients. Operating waveforms

of the SW pin should keep the pedestal of the flyback waveform below

100V as shown in Figure 5.

Typical Performance Characteristics TA = 25°C, unless otherwise noted.

Output Voltage

5.25

5.20 VIN = 48V

5.15

5.10

5.05

5.00

4.95

4.90

4.85

4.80

4.75

–50 –25 0 25 50 75 100 125 150

TEMPERATURE (°C)

3511 G01

Switch VCESAT

1000

800

600

400

200

0

0 50 100 150 200 250 300 350

SWITCH CURRENT (mA)

3511 G04

Quiescent Current

5

4

3

2

1

0

–50 –25

VIN = 24V

VIN = 48V

VIN = 100V

0 25 50 75 100 125 150

TEMPERATURE (°C)

3511 G02

Switch Current Limit

400

MAXIMUM CURRENT LIMIT

350

300

250

200

150

100

MINIMUM CURRENT LIMIT

50

0

–50 –25

0 25 50 75 100 125 150

TEMPERATURE (°C)

3511 G05

BIAS Pin Voltage

4.0

3.5

3.0

2.5

2.0

–50 –25

VIN = 24V, 10mA

VIN = 24V, NO LOAD

0 25 50 75 100 125 150

TEMPERATURE (°C)

3511 G03

Quiescent Current vs VIN

4

3

2

1

0

0

20

40

60

80 100

VOLTAGE (V)

3511 G06

3511fa

3

Share Link: