LTM4686 datasheet(8/132 Pages) AD

8 / 132 page

LTM4681

Rev. 0

For more information www.analog.com

ELECTRICAL CHARACTERISTICS The

denotes the specifications which apply over the specified internal

operating temperature range (Note 2). Specified as each individual output channel (Note 4). TA = 25°C, VIN = 12V, RUNn = 3.3V,

RUNP = 0, FREQUENCY_SWITCH = 350kHz and VOUTn commanded to 1.000V unless otherwise noted. Configured with factory-default

EEPROM settings and per Test Circuit 1, unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

IO-F/S

Output Current Full-Scale Digitizable

Range

(Note 15)

Utilizing MFR_PWM_MODE[7] = 1, Using IOUT_OC_

FAULT_LIMIT = 61A, Page 97

IO-RB-ACC

Output Current, Readback Accuracy

READ_IOUTn, Channels 0–3, 0 ≤ IOUTn ≤ 30A,

Forced-Continuous Mode, MFR_PWM_MODEn[0] = 1b

0°C to 125°C

–40°C to 125°C

See Histograms in Typical Performance Characteristics

(Note 12)

Within 1.25A of Reading

Within 1.5A of Reading

IO-RB(31.25A)

Full Load Output Current Readback

(Note 12). See Histograms in Typical Performance

Characteristics

31.25

tCONVERT-IO-RB

Output Current Readback Update

Rate

MFR_ADC_CONTROL = 0x00 (Notes 9, 15)

MFR_ADC_CONTROL = 0x06 (CH0,2 IOUT) or 0x01 (CH1,3 IOUT)

(Notes 9, 15) See MFR_ADC_CONTROL SECTION

Input Current Readback

Resolution

(Note 10)

Bits

VIINSTP

LSB Step Size Full-Scale Range = 16mV

LSB Step Size Full-Scale Range = 32mV

LSB Step Size Full-Scale Range = 64mV

Gain = 8, 0V ≤ |VIIN+ – VIIN–| ≤ 5mV

Gain = 4, 0V ≤ |VIIN+ – VIIN–| ≤ 20mV

Gain = 2, 0V ≤ |VIIN+ – VIIN–| ≤ 50mV

15.26

30.52

µV

IIN_TUE

Total Unadjusted Error

Gain = 8, 2.5mV ≤ |VIIN+ – VIIN–| (Note 7)

Gain = 4, 4mV ≤ |VIIN+ – VIIN–| (Note 7)

Gain = 2, 6mV ≤ |VIIN+ – VIIN–| (Note 7)

±2

±1.3

±1.2

VOS

Zero-Code Offset Voltage

(Note 15)

±50

µV

tCONVERT

Update Rate

(Notes 9,15) See MFR_ADC_CONTROL SECTION for

Faster Update Rates

Supply Current Readback

Resolution

(Note 10)

Bits

VICHIPSTP

LSB Step Size Full-Scale Range =

256mV

Onboard 1Ω Resistor

244

µV

ICHIP_RB

ICHIP Readback

SVIN_nn Current

±50

tCONVERT

Update Rate

(Notes 9,15) See MFR_ADC_CONTROL SECTION for

Faster Update Rates

Temperature Readback (T0, T1)

TRES-RB

Temperature Readback Resolution

Channel n, and Controller (Note 15)

0.25

°C

T0_TUE

External Temperature Total

Unadjusted Readback Error

Supporting Only ∆VBE Sensing

2.5

°C

T1_TUE

Internal TSNS TUE

VRUNn = 0.0, fSYNC = 0kHz (Note 7)

±1

°C

tCONVERT

Update Rate

(Note 9)

MFR_ADC_CONTROL = 0x04 or 0x0C (Notes 9, 15)

INTVCC_nn Regulator/VBIAS

VINTVCC_nn

Internal VCC Voltage No Load

6V ≤ SVIN_nn ≤ 16V

5.25

5.5

5.75

VLDO_INT

INTVCC Load Regulation

ICC = 0mA to 20mA, 6V ≤ SVIN_nn ≤ 16V

0.5

±2

VIN_VBIAS

Input Range for VIN_VBIAS

4.5

RUNP

VBIAS Enable

RUNP Rising

0.8

0.85

VBIAS

5.5V Internal Regulator

7 ≤ VIN_VBIAS ≤ 16

5.25

5.5

5.75

LTM4686 Datasheet(PDF) 8 Page - Analog Devices

LTM4686 Datasheet(HTML) 8 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL