LT3840

4

3840fa

For more information www.linear.com/LT3840

l

denotes the specifications which apply over the full operating

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Power Good

l

87

90

93

%

2.5

%

PG Leakage

0.1

1

µA

PG Sink Current

l

35

65

µA

MOSFET Gate Drivers

Non-Overlap Time TG to BG

75

ns

Non-Overlap Time BG to TG

75

ns

TG Minimum On Time

150

ns

TG Minimum Off Time

240

ns

TG Maximum Duty Cycle

99

%

TG, BG Drive On Voltage

7.5

V

TG, BG Drive Off Voltage

5

mV

TG, BG Drive Rise Time

20

ns

TG, BG Drive Fall Time

20

ns

BOOST UVLO (Rising)

4.5

5.3

V

BOOST UVLO Hysteresis

350

mV

Internal Auxiliary Supply

l

7.25

7.5

7.75

V

6.25

6.5

6.75

V

300

mV

6

µA

l

100

mA

60

µA

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 LT3840E 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

LT3840I is guaranteed over the –40°C to 125°C operating junction

temperature range. The LT3840H is guaranteed over the full –40°C to

150°C operating junction temperature range. The LT3840MP is 100%

tested and guaranteed over the –55°C to 150°C temperature range. High

junction temperatures degrade operating lifetimes; Operating lifetime is

derated for junction temperatures greater than 125°C.

Note 3: Supply current specification does not include switch drive

currents. Actual supply currents will be higher.

Note 4: Specification is not tested but is guaranteed by design,

characterization and correlation with statistical process controls.