Data Sheet

LT8350S

analog.com

Rev. A

4 of 36

SPECIFICATIONS

Table 1. Electrical Characteristics

(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

Input and Output

Input Voltage Range

TA = -40°C to 125°C

3

40

V

VIN Shutdown Current

VEN/UVLO = 0.3V

2

5

µA

VIN Active Current

(Not Switching)

VEN/UVLO = 1.5V,

EXTVCC = 0V

3.5

5

mA

VEN/UVLO = 1.5V,

EXTVCC = 5V

400

650

µA

EXTVCC Voltage Range

TA = -40°C to 125°C

1

18

V

Output Voltage Range

TA = -40°C to 125°C

0

18

V

EN/UVLO Shutdown

Threshold

Falling

0.3

0.6

0.9

V

EN/UVLO Enable

Threshold

Rising

TA = -40°C to 125°C

1.196 1.220 1.244

V

EN/UVLO Enable

Hysteresis

15

mV

EN/UVLO Enable

Hysteresis Current

VEN/UVLO = 1.1V

2.1

2.5

2.9

µA

VEN/UVLO = 1.5V

-0.1

0

0.1

µA

Linear Regulators

INTVCC Regulation

Voltage

IINTVCC = 20mA

3.4

3.6

3.8

V

VREF Regulation Voltage IVREF = 100µA

TA = -40°C to 125°C

1.99

2.00

2.03

V

Current Regulation Loop

Full-Scale Current

Regulation

VCTRL = 2V, VISP = 12V

TA = -40°C to 125°C

97

100

103

mV

VCTRL = 2V, VISP = 0V

TA = -40°C to 125°C

97

100

103

mV

ISP/ISN Input Common

Mode Range

TA = -40°C to 125°C

0

40

V

ISP/ISN Current

Regulation Amplifier gm

2300

µS

Voltage Regulation Loop

FB Pin Current

FB in Regulation,

Current Out of Pin

35

80

nA