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| TPS7A7200_15 Datasheet, PDF (20/42 Pages) Texas Instruments – 2-A, Fast-Transient, Low-Dropout Voltage Regulator | |||
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TPS7A7200
SBVS136F â MARCH 2012 â REVISED NOVEMBER 2015
www.ti.com
7.3.2 Traditional Adjustable Configuration
For any output voltage target that is not supported in the User-Configurable Output Voltage section, a traditional
adjustable configuration with external-feedback resistors can be used with the TPS7A7200. Figure 30 shows how
to configure the TPS7A7200 as an adjustable regulator with an equation and Table 2 lists recommended pairs of
feedback resistor values.
NOTE
The bottom side of feedback resistor R2 in Figure 30 must be in the range of 27 kΩ to 33
kΩ to maintain the specified regulation accuracy.
CFF
OUT
R1
SNS
R2
FB
PG
50mV
Thermal Pad
IN
EN
SS
NC
1.6V
Optional
32R
50mV
VIN
FB
16R
8R
0.5 V
4R
2R
OUT
SNS
3.2R
CFF
FB
1R
R1
R2
VOUT
=
(R1 + R2 )
R2
´
0.500
100mV
200mV
400mV
800mV
1.6V
Figure 30. Traditional Adjustable Configuration With External Resistors
VOUT(TARGET)
(V)
1
1.2
1.5
1.8
1.9
2.5
3
3.3
5
Table 2. Recommended Feedback-Resistor Values
R1 (kΩ)
30.1
39.2
61.9
80.6
86.6
115
147
165
280
E96 SERIES
R2 (kΩ)
30.1
28
30.9
30.9
30.9
28.7
29.4
29.4
30.9
R1 (kΩ)
30
43.7
60
80
87.5
112
150
175
243
R40 SERIES
R2 (kΩ)
30
31.5
30
30.7
31.5
28
30
31.5
27.2
20
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