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LT3507

3507f

ELECTRICAL CHARACTERISTICS The l denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VIN1, VIN2, VIN3 = 12V, VBOOST1, VBOOST2, VBOOST3 = 17V, unless

otherwise noted (Note 2)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Load Regulation

IDRIVE from 0.1mA to 10mA

0.005

%/mA

DRIVE Output Current Limit

22.5

Dropout Voltage, VIN1 to DRIVE

IDRIVE = 10mA

1.7

2.0

Dropout Voltage, BIAS to DRIVE

IDRIVE = 10mA

0.5

0.8

Over/Undervoltage Lockout

Undervoltage Lockout Threshold

1.15

1.20

1.25

Overvoltage Lockout Threhold

1.15

1.20

1.25

Undervoltage Lockout Hysteresis Current

V(UVLO) < 1.2V

μA

Overvoltage Lockout Hysteresis Current

V(OVLO) > 1.2V

–7

–10

–13

μA

Input Bias Current (OVLO and UVLO)

–100

–200

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 LT3507E 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

LT3507I is guaranteed to meet performance speciﬁcations from –40°C

to 125°C junction temperature. The LT3507H is guaranteed over the full

–40°C to 150°C operating junction temperature range. High junction

temperatures degrade operating lifetimes. Operating lifetime is derated at

junction temperatures greater than 125°C.

Note 3: Current limit is guaranteed by design and/or correlation to static

test. Slope compensation reduces current limit at higher duty cycles.

Note 4: This is the minimum voltage across the boost capacitor needed to

guarantee full saturation of the internal power switch.

Note 5: This IC includes overtemperature protection that is intended

to protect the device during momentary overload conditions.

Junction temperature will exceed the maximum operating range when

overtemperature protection is active. Continuous operation above the

speciﬁed maximum operating junction temperature may impair device

reliability.

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