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PM6686TR Datasheet(PDF) 25 Page - STMicroelectronics

No. de pieza PM6686TR
Descripción Electrónicos  Dual step-down controller with adjustable voltages, adjustable LDO and auxiliary charge pump controller for notebook
PDF  50 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM6686TR Datasheet(HTML) 25 Page - STMicroelectronics

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PM6686
Device description
Doc ID 15281 Rev 4
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Figure 45.
Resistor divider to configure the output voltage
Where R1, R2 are the resistors of the FB1 pin divider, as shown in Figure 2.
OUT2 output voltage is programmed with REFIN2 pin. Fixed output voltage is selected
connecting REFIN2 to VREF3 (OUT2 = 1.05 V) or to VCC (OUT2 = 3.3 V).
When the REFIN2 voltage is between 0.7 V and 2.5 V, OUT2 output voltage tracks REFIN2
voltage. When REFIN2 is lower than 0.5 V the section is turned OFF.
Table 7.
Switching output voltages configuration
Output
control pin
Control pin
connected to
Operation mode
Output voltage
OUT1
FB1
GND
Fixed
5 V
VCC
Fixed
1.5 V
Resistor divider
Adj
OUT2
REFIN2
VCC
Fixed
3.3 V
VREF3
Fixed
1.05 V
Ext source
Tracking
=REFIN2
 
FB1
PHASE
COUT
L
R1
R2
VOUT
⎟
⎠
⎞
⎜
⎝
⎛
+
⋅
=
1
2
R
1
R
V
7
.
0
V
1
OUT



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