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LTM4676A Scheda tecnica(PDF) 48 Page - Linear Technology

Il numero della parte LTM4676A
Spiegazioni elettronici  Dual 13A or Single 26A 關Module Regulator with Digital Power System Management
Download  136 Pages
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Produttore elettronici  LINER [Linear Technology]
Homepage  http://www.linear.com
Logo LINER - Linear Technology

LTM4676A Scheda tecnica(HTML) 48 Page - Linear Technology

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LTM4676A
48
4676afa
For more information www.linear.com/LTM4676A
applicaTions inForMaTion
Table 2. VOUTnCFG Pin Strapping Look-Up Table for the
LTM4676A'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
NVM
32.4
See Table 3
See Table 3
22.6
3.3
0
18.0
3.1
0
15.4
2.9
0
12.7
2.7
0
10.7
2.5
0, if VTRIMn > 0mV
1, if VTRIMn ≤ 0mV
9.09
2.3
1
7.68
2.1
1
6.34
1.9
1
5.23
1.7
1
4.22
1.5
1
3.24
1.3
1
2.43
1.1
1
1.65
0.9
1
0.787
0.7
1
0
0.5
1
*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.
Table 3. VTRIMnCFG Pin Strapping Look-Up Table for the
LTM4676A's Output Voltage, Fine Adjustment Setting (Not
Applicable if MFR_CONFIG_ALL[6] = 1b)
RVTRIMnCFG*
(kΩ)
VTRIM (mV) FINE
ADJUSTMENT
TO VOUTn
SETTING WHEN
RESPECTIVE
RVOUTnCFG
32.4kΩ
VOUTn OUTPUT
VOLTAGE
SETTING
(V) WHEN
VOUTnCFG PIN
USES RCFG =
32.4kΩ
MFR_PWM_
MODEn[1] BIT
Open
0
NVM
0, if VOUT_OV_
FAULT_LIMITn
> 2.75V
1, if VOUT_OV_
FAULT_LIMITn
≤ 2.75V
32.4
99
22.6
86.625
18.0
74.25
15.4
61.875
12.7
49.5
10.7
37.125
5.50
0
9.09
24.75
5.25
0
7.68
12.375
5.00
0
6.34
–12.375
4.75
0
5.23
–24.75
4.50
0
4.22
–37.125
4.25
0
3.24
–49.5
4.00
0
2.43
–61.875
3.75
0
1.65
–74.25
3.63
0
0.787
–86.625
3.50
0
0
–99
3.46
0
*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.


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