Datasheet > LT1513%20LT1513-2

LT1513%20LT1513-2

更新时间： 2022-01-18 22:16:00

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凌特 - Linear		/
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16页	303K
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LT1513/LT1513-2

ELECTRICAL CHARACTERISTICS

V_IN= 5V, V_C= 0.6V, V_FB= V_REF, I_FB= 0V, V_SWand S/S pins open, unless otherwise noted.

SYMBOL PARAMETER CONDITIONS

Error Amplifier Clamp Voltage

MIN

TYP

MAX

UNITS

High Clamp, V = 1V

1.70

0.25

1.95

0.40

2.30

0.52

Low Clamp, V = 1.5V

Error Amplifier Voltage Gain

500

V/V

V Pin Threshold

Duty Cycle = 0%

0.8

1.25

Switching Frequency

2.7V ≤ V ≤ 25V

450

430

400

500

550

580

kHz

0°C ≤ T ≤ 125°C

T < 0°C

Maximum Switch Duty Cycle

●

130

Switch Current Limit Blanking Time

Output Switch Breakdown Voltage

260

0°C ≤ T ≤ 125°C

T < 0°C

SAT

Output Switch ON Resistance

Switch Current Limit

= 2A

0.25

0.45

Ω

Duty Cycle = 50%

Duty Cycle = 80% (Note 1)

●

3.0

2.6

3.8

3.4

5.4

5.0

LIM

∆I /∆I

IN SW

Supply Current Increase During Switch ON Time

mA/A

A/V

Control Voltage to Switch Current

Transconductance

Minimum Input Voltage

Supply Current

●

2.4

2.7

5.5

2.7V ≤ V ≤ 25V

Shutdown Supply Current

2.7V ≤ V ≤ 25V, V ≤ 0.6V, T ≥ 0°C

µA

S/S

T < 0°C

Shutdown Threshold

2.7V ≤ V ≤ 25V

●

0.6

1.3

µs

Shutdown Delay

S/S Pin Input Current

Synchronization Frequency Range

0V ≤ V ≤ 5V

–10

600

µA

S/S

800

kHz

Note 2: The I pin is servoed to its regulating state with V = 0.8V.

Note 3: Consult factory for grade selected parts.

The

●

denotes specifications which apply over the full operating

temperature range.

Note 1: For duty cycles (DC) between 50% and 85%, minimum

Note 4: The I pin is sevoed to regulate FB to 1.245V

guaranteed switch current is given by I = 1.33 (2.75 – DC).

LIM

1 234 5 6 7...16

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