LT3571 datasheet(3/16 Pages) LINER

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LT3571

3571fa

ELECTRICAL CHARACTERISTICS

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.

The

l denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C, VIN = 3V, VSHDN = 3V, unless otherwise noted.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Switching Frequency

RT = 12.1k

RT = 4.22k

RT = 56.2k

0.85

1.7

210

250

1.15

2.3

280

MHz

kHz

Maximum Duty Cycle

RT = 56.2k (250kHz)

SYNC = 300kHz Clock Signal, RT = 56.2k

RT = 12.1k (1MHz)

RT = 4.22k (2MHz)

Switch Current Limit

370

470

570

Switch VCESAT

ISW = 200mA

240

Switch Leakage Current

VSW = 75V

μA

Schottky Forward Voltage

ISCHOTTKY = 200mA

850

Schottky Reverse Leakage

VOUT – VSW = 75V

μA

SHDN Voltage High

1.5

SHDN Voltage Low

0.4

SHDN Pin Bias Current

μA

CTRL to FB Offset

VCTRL = 0.5V

–5

–10

CTRL Input Bias Current

Current Out of Pin, VCTRL = 0.5V

100

APD Current Monitor Gain

250nA ≤ IAPD < 10μA, 10V < VMONIN < 75V

10μA ≤ IAPD ≤ 2.5mA, 20V < VMONIN < 75V

0.185

0.194

0.20

0.215

0.206

Monitor Output Voltage Clamp

11.5

APD Monitor Voltage Drop

VMONIN – VAPD, IAPD = 1mA

4.8

5.2

MONIN Pin Current Limit

VMONIN = 40V, VAPD = 0V

Note 2: The LT3571E is guaranteed to meet speciﬁed performance 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

LT3571I is guaranteed to meet performance speciﬁcations over the –40°C

to 125°C operating junction temperature range.

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