LT8335

3

8335f

For more information www.linear.com/LT8335

l

denotes the specifications which apply over the full operating

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

l

3

25

V

l

0.9

2

2

5

µA

µA

l

2

3.6

5

9.5

µA

µA

Sleep Mode, Not Switching

l

5.5

8.5

10

15

µA

µA

Active Mode, Not Switching

l

780

840

1100

1200

µA

µA

FBX Regulation

FBX Regulation Voltage

FBX > 0V

FBX < 0V

l

l

1.568

–0.820

1.6

–0.80

1.632

–0.780

V

V

FBX Line Regulation

0.005

0.005

0.015

0.015

%/V

%/V

FBX Pin Current

FBX = 1.6V, –0.8V

l

–10

10

nA

Oscillator

l

1.80

2.0

2.20

MHz

Minimum On-Time

74

115

ns

Minimum Off-Time

47

65

ns

Switch

Maximum Switch Current Limit Threshold

l

2.0

2.5

3.0

A

170

mΩ

Switch Leakage Current

0.1

1

µA

EN/UVLO Logic

EN/UVLO Pin Threshold (Rising)

Start Switching

l

1.620

1.68

1.745

V

EN/UVLO Pin Threshold (Falling)

Stop Switching

l

1.556

1.60

1.644

V

EN/UVLO Pin Current

l

–40

40

nA

Soft-Start

Soft-Start Time

1.2

ms

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.

loading is allowed on this pin.

Note 3: The LT8335E 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

LT8335I is guaranteed over the full –40°C to 125°C operating junction

temperature range. High junction temperatures degrade operating

lifetimes. Operating lifetime is derated at junction temperatures greater

than 125°C.

Note 4: The IC includes overtemperature protection that is intended to

protect the device during overload conditions. Junction temperature will

exceed 150°C when overtemperature protection is active. Continuous

operation above the specified maximum operating junction temperature

will reduce lifetime.