LT3570

4

3570fa

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

SW2

Error Amplifier 2 Transconductance

195

μMho

Error Amplifier 2 Voltage Gain

100

V/V

700

mV

5.4

A/V

SW2 Current Limit

(Note 7)

1.5

2.4

3.1

A

240

mV

SW2 Leakage Current

0.2

5

μA

BOOST Pin Current

15

30

mA

mA

LDO

LDO Maximum Output Current

10

20

mA

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 LT3570E 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

LT3570I is guaranteed over the full –40°C to 125°C operating junction

temperature range.

Note 4: Shutdown current is for each individual input current.

Note 5: Current flows into the pin.

Note 6: Current flows out of the pin.

and/or correlation to static test.

Note 8: This IC includes overtemperature protection that is intended

to protect the device during momentary overload conditions. Junction

temperature will exceed the maximum operating junction temperature

range when overtemperature protection is active. Continuous operation

above the specified maximum operating junction temperature may impair

device reliability.

TYPICAL PERFORMANCE CHARACTERISTICS

Feedback Voltage vs Temperature

Frequency vs Temperature

Soft-Start Current vs Temperature

TEMPERATURE (°C)

–50

0.770

0.775

0.780

0.785

0.790

050

100

150

3570 G01

0.795

0.800

–25

25

75

125

TEMPERATURE (°C)

–50

1500

2000

2500

25

75

150

3570 G02

1000

500

0

–25

0

50

100 125

TEMPERATURE (°C)

–50

4.4

4.6

4.8

25

50

75

100 125

3570 G03

4.2

4.0

–25

0

150

3.8

3.6

5.0