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LT4430

4430fb

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

junction temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = 5V, FB = VFB, COMP = 1V, unless otherwise noted (Note 3).

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 LT4430 is tested under pulsed load conditions such that TJ ≈ TA.

The LT4430E is guaranteed to meet 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 LT4430I is guaranteed

over the –40°C to 125°C operating junction temperature range, the

LT4430H is guaranteed over the –40°C to 150°C operating junction

temperature range and the LT4430MP is tested and guaranteed over the

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

temperatures degrade operating lifetimes; operating lifetime is derated

for junction temperatures greater than 125°C. Note that the maximum

ambient temperature consistent with these speciﬁcations is determined by

speciﬁc operating conditions in conjunction with board layout, the rated

package thermal impedance and other environmental factors.

Note 3: All currents into device pins are positive. All currents out of device

pins are negative. All voltages are referenced to GND unless otherwise

speciﬁed.

Note 4: This parameter is guaranteed by correlation and is not tested.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

IOC

Overshoot Control Charging Current

VOC = 0V (E-, I-Grades)

VOC = 0V (H-Grade)

VOC = 0V (MP-Grade)

●

–15

–17

–8.5

–5

–4

μA

OC Clamp Voltage

0.93

OC Ampliﬁer Offset Voltage

FB = 0.3V

AVOL

Error Ampliﬁer Open-Loop DC Gain

VCOMP = 0.8V to 1V (E-, I-Grades)

VCOMP = 0.8V to 1V (H-, MP-Grades)

●

Error Ampliﬁer Unity-Gain Bandwidth

No Load (Note 4)

MHz

Error Ampliﬁer Output Swing Low

FB = 1V

●

0.1

0.35

0.55

Error Ampliﬁer Output Swing High

FB = 0V (E-, I-Grades)

FB = 0V (H-Grade)

FB = 0V (MP-Grade)

●

1.2

1.15

1.33

1.5

1.55

Error Ampliﬁer Output Source Current

FB = 0V, COMP = 1V (E-, I-Grades)

FB = 0V, COMP = 1V (H-Grade)

FB = 0V, COMP = 1V (MP-Grade)

●

–800

–825

–450

–225

–200

μA

Error Ampliﬁer Output Sink Current

FB = 1V, COMP = 1V

Opto Driver Inverting DC Gain

–6.4

–6

–5.6

V/V

Opto Driver –3dB Bandwidth

No Load (Note 4)

600

kHz

Opto Driver Output Swing Low

FB = 0V, COMP = Open (E-, I-Grades)

FB = 0V, COMP = Open (H-, MP-Grades)

●

0.5

0.85

0.9

Opto Driver Output Swing High

VIN = 3V, FB = 1V, COMP = Open,

IOPTO = 10mA (E-, I-, H-Grades)

VIN = 3V, FB = 1V, COMP = Open,

IOPTO = 10mA (MP-Grade)

●

VIN – 1.25

VIN – 1.3

VIN – 1.05

Opto Driver Output Swing High

VIN = 20V, FB = 1V, COMP = Open,

IOPTO = 10mA

●

4.2

5.6

7.5

ISC

Opto Driver Output

Short-Circuit Current (Sourcing)

FB = 1V, COMP = Open, OPTO = 0V

(E-, I-, H-Grades)

FB = 1V, COMP = Open, OPTO = 0V

(MP-Grade)

●

10.5

9.5

Opto Driver Output Sink Current

FB = 0V, OPTO = 1.5V (E-, I-, H-Grades)

FB = 0V, OPTO = 1.5V (MP-Grade)

●

150

135

350

650

μA

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