LT8722 datasheet(6/30 Pages) AD

6 / 30 page

LT8722

Rev. 0

For more information www.analog.com

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

AOUT Analog Monitor

VILIMP_ZERO

SPIS_DAC_ILIMP = 0x200, ILIMP = (512–512) • 13.3mA = 0A.

VILIMP = V1P65 + ILIMP/8, SPIS_AMUX = 0x40

1.665

VILIMP_MID

SPIS_DAC_ILIMP = 0x294, ILIMP = (660–512) • 13.3mA = 1.9684A.

VILIMP = V1P65 + ILIMP/8, SPIS_AMUX = 0x40

1.913

VILIMP_HIGH

SPIS_DAC_ILIMP = 0x318, ILIMP = (792–512) • 13.3mA = 3.724A.

VILIMP = V1P65 + ILIMP/8, SPIS_AMUX = 0x40

2.135

VILIMN_ZERO

SPIS_DAC_ILIMN = 0x1FF, ILIMP = (511–511) • 13.3mA = 0A.

VILIMP = V1P65 + ILIMP/8, SPIS_AMUX = 0x41

1.663

VILIMN_MID

SPIS_DAC_ILIMN = 0x174, ILIMP = (372–511) • 13.3mA = –1.8487A.

VILIMP = V1P65 + ILIMP/8, SPIS_AMUX = 0x41

1.429

VILIMN_HIGH

SPIS_DAC_ILIMN = 0xF8, ILIMP = (248–511) • 13.3mA = –3.4979A.

VILIMP = V1P65 + ILIMP/8, SPIS_AMUX = 0x41

1.221

AOUT_DAC_NEG

SPIS_DAC = 0x00E00000, AOUT_DAC_NEG =1.8 • V1P25 - 0.8 • VDAC,

SPIS_AMUX=0x42

1.51

AOUT_DAC_ZERO

SPIS_DAC = 0x00000000, AOUT_DAC_ZERO =1.8 • V1P25 - 0.8 • VDAC,

SPIS_AMUX=0x42

1.263

AOUT_DAC_POS

SPIS_DAC = 0xFF100000, AOUT_DAC_POS =1.8 • V1P25 - 0.8 • VDAC,

SPIS_AMUX=0x42

0.991

AVOUT_NEG

SPIS_DAC = 0xFFB20000, VOUT = –11927552/224 • 1.25 • 16 • Ga = –13.792V

AOUT = V1P25–VOUT/16, SPIS_AMUX = 0x43

2.125

AVOUT_ZERO

SPIS_DAC = 0x00000000, VOUT = 0V, SPIS_AMUX = 0x43

1.259

AOUT_DAC_POS

SPIS_DAC = 0x00E00000, VOUT = +11927552/224 • 1.25 • 16 • Ga = 13.792V

AOUT = V1P25–VTEC/16, SPIS_AMUX = 0x43

0.394

Output Current, VIMON

ILDR = –1A. AOUT = V1P65 + ILDR/10, SPIS_AMUX = 0x44

1.538

ILDR = 0A. AOUT = V1P65 + ILDR/10, SPIS_AMUX = 0x44

1.666

ILDR = 1A. AOUT = V1P65 + ILDR/10, SPIS_AMUX = 0x44

1.799

AOUT_2P5V

AOUT = 0.6 • V2P5, SPIS_AMUX = 0x45

1.5138

AOUT_1P25V

AOUT = V1P25, SPIS_AMUX = 0x46

1.26

AOUT_1P65V

AOUT = V1P65, SPIS_AMUX = 0x47

1.665

Temp Sense Voltage at 25°C

Die Temp = (AOUT –1.4207)/0.0047148, SPIS_AMUX = 0x48

1.543

AOUT_VIN

VIN = 15V, AOUT = 0.9 • V2P5–VIN/8, SPIS_AMUX = 0x49

0.3933

AOUT_VCC

VCC = 3.4V, AOUT_VCC = 0.4 • VCC, SPIS_AMUX = 0x4A

1.36

AOUT_VDDIO

VDDIO = 3.3V, SPIS_AMUX = 0x4B, AOUT = 0.4 • VDDIO

1.32

AOUT_VSFB

VSFB = 15V, SPIS_AMUX = 0x4C, AOUT = (16/17) • V1P25 + VSFB/17

2.072

ELECTRICAL CHARACTERISTICS The

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C, VIN = 15V, VDDIO = 3.3V and GND = SYNC = 0V, EN = SWEN = high

unless otherwise specified. VCC has a 1μF capacitor to GND and is driven by the VCC regulator unless otherwise stated.

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