Data Sheet

LT8350S

analog.com

Rev. A

5 of 36

(TA = 25°C, unless otherwise specified, where conditions must be at full operating temperature range. VIN = 12V,

VEN/UVLO= 1.5V, unless otherwise noted.)

PARAMETER

CONDITIONS

COMMENTS

MIN

TYP

MAX UNITS

FB Regulation Voltage

VC = 0.8V

TA = -40°C to 125°C

0.985

1.00

1.015

V

FB Line Regulation

VIN = 3V to 40V

0.02

0.2

%

FB Load Regulation

0.02

0.1

%

FB Voltage Regulation

Amplifier gm

580

uS

VC Output Impedance

10

MΩ

Power Switches

Maximum Switch

Current Limit

Peak-Boost Current

Mode

6.3

7.0

7.7

A

Peak-Buck Current Mode

5.8

7.0

8.0

A

Switch A On-Resistance

(From VIN to SW1)

ISW = 1A

50

mΩ

Switch B On-

Resistance (From SW1

to GND)

ISW = 1A

50

mΩ

Switch C On-

Resistance (From SW2

to GND)

ISW = 1A

30

mΩ

Switch D On-

Resistance (From VOUT

to SW2)

ISW = 1A

30

mΩ

Oscillator

Switching Frequency

VSYNC/MODE = 0V,

RT = 14.3kΩ

TA = -40°C to 125°C

1930

2000

2070

kHz

VSYNC/MODE = 0V,

RT = 178kΩ

TA = -40°C to 125°C

260

290

320

kHz

SYNC Frequency

200

2000

kHz

SYNC/MODE Threshold

Voltage

0.4

1.5

V

Spread Spectrum

Above Oscillator

Frequency

VSYNC/MODE = 3.6V

20

23

26

%

Fault

FB Short Threshold

(VFB)

Falling

0.23

0.23

0.27

V