LTM4686BEVPBF datasheet(45/130 Pages) AD

45 / 130 page

Table 3. VTRIMnCFG Pin Strapping Look-Up Table for the

LTM4686B’s Output Voltage, Fine Adjustment Setting (Not

Applicable if MFR_CONFIG_ALL[6] = 1b)

RVTRIMnCFG*

(kΩ)

VTRIM (mV) FINE

ADJUSTMENT TO

VOUTn SETTING

WHEN RVOUTnCFG

≠ 32.4kΩ

VOUT_–

COMMANDn

SETTING

(V) WHEN

RVOUTnCFG =

32.4kΩ

MFR_PWM_

MODEn[1] BIT

Open

NVM

0, if VOUT_OV_

FAULT_LIMITn

> 2.75V

1, if VOUT_OV_

FAULT_LIMITn

≤ 2.75V

32.4

22.6

86.625

18.0

74.25

15.4

61.875

12.7

49.5

10.7

37.125

Do Not Use

9.09

24.75

Do Not Use

7.68

12.375

Do Not Use

6.34

–12.375

Do Not Use

5.23

–24.75

Do Not Use

4.22

–37.125

Do Not Use

3.24

–49.5

Do Not Use

2.43

–61.875

Do Not Use

1.65

–74.25

Do Not Use

0.787

–86.625

3.50

–99

3.46

*RVTRIMnCFG value indicated is nominal. Select RVTRIMnCFG from a resistor

vendor such that its value is always within 3% of the value indicated in

the table. Take into account resistor initial tolerance, T.C.R. and resistor

operating temperatures, soldering heat/IR reflow, and endurance of the

resistor over its lifetime. Thermal shock/cycling, moisture (humidity) and

other effects (depending on one’s specific application) could also affect

RVTRIMnCFG’s value over time. All such effects must be taken into account

in order for resistor pin strapping to yield the expected result at every

SVIN power-up and/or every execution of MFR_RESET or RESTORE_

USER_ALL, over the lifetime of one’s product.

LTM4686B

Rev. 0

For more information www.analog.com

APPLICATIONS INFORMATION

Table 2. VOUTnCFG Pin Strapping Look-Up Table for the

LTM4686B’s Output Voltage, Coarse Setting (Not Applicable if

MFR_CONFIG_ALL[6] = 1b)

RVOUTn CFG*

(kΩ)

VOUTn (V) SETTING

COARSE

MFR_PWM_MODEn[1] BIT

Open

NVM

32.4

See Table 3

22.6

3.3

18.0

3.1

15.4

2.9

12.7

2.7

10.7

2.5

0, if VTRIMn > 0mV

1, if VTRIMn ≤ 0mV

9.09

2.3

7.68

2.1

6.34

1.9

5.23

1.7

4.22

1.5

3.24

1.3

2.43

1.1

1.65

0.9

0.787

0.7

0.5

*RVOUTnCFG value indicated is nominal. Select RVOUTnCFG from a resistor

vendor such that its value is always within 3% of the value indicated in

the table. Take into account resistor initial tolerance, T.C.R. and resistor

operating temperatures, soldering heat/IR reflow, and endurance of the

resistor over its lifetime. Thermal shock/cycling, moisture (humidity) and

other effects (depending on one’s specific application) could also affect

RVOUTnCFG’s value over time. All such effects must be taken into account

in order for resistor pin strapping to yield the expected result at every

SVIN power-up and/or every execution of MFR_RESET or RESTORE_

USER_ALL, over the lifetime of one’s product.

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