LT8277 datasheet(3/31 Pages) AD

3 / 31 page

Data Sheet

LT8277

analog.com

Rev 0

3 of 31

SPECIFICATIONS

Table 1. Electrical Characteristics

(Specifications are at TA = 25°C, VIN = 12V, VENABLE = 12V, unless otherwise noted)

PARAMETER

SYMBOL

CONDITIONS/COMMENTS

MIN

TYP

MAX

UNITS

VIN Operating Supply

Range

VIN_OPR

This specification is valid over the

full operating temperature range

VIN Start-Up Range

VIN_START

This specification is valid over the

full operating temperature range

VIN Pin Quiescent

Current

VMODE = 0V, No SPI Input, No

Switching

VIN Pin Shutdown

Current

IVIN_SHDN

VENABLE = 1.15V

µA

VENABLE = 0.4V

ENABLE Threshold

Voltage (Falling)

VENABLE_FALLING

This specification is valid over the

full operating temperature range

1.16

1.26

1.36

ENABLE Rising

Hysteresis

VENABLE_HYS

ENABLE Pin Bias

Current, Device Off

IENABLE_OFF

VENABLE = 1.15V

2.5

µA

ENABLE Pin Bias

Current, Device On

IENABLE_ON

VENABLE = 1.4V

100

Internal LDO Regulator

INTVCC Regulation

Voltage

VINTVCC

IINTVCC = -30mA,

VMODE = 0V, No SPI

Input

This specification

is valid over the

full operating

temperature

range

4.8

5.2

INTVCC Undervoltage

Lockout (Falling)

VINTVCC_UVLO

3.8

4.2

INTVCC Undervoltage

Lockout Hysteresis

VINTVCC_UVLOHYS

170

INTVCC Current Limit

IINTVCC_LIM

VIN = 12V, VINTVCC = 4V

140

Dropout (VIN– VINTVCC)

VIN = 5V, IINTVCC = -40mA, Not Switching

300

Current Comparator

VSENSE (VSNSP– VSNSN)

Limit

VSENSE_LIM

This specification is valid over the

full operating temperature range

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