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FAN2011 Datasheet(PDF) 2 Page - Fairchild Semiconductor

Part No. FAN2011
Description  1.5A Low Voltage Current Mode Synchronous PWM Buck Regulator
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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FAN2011 Datasheet(HTML) 2 Page - Fairchild Semiconductor

 
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FAN2011/FAN2012 Rev. 1.0.4
Typical Application
Figure 1. Typical Application
Pin Assignment
Figure 2. Pin Assignment
Pin Description
FAN2011 (3x3mm 6-Lead MLP)
FAN2012 (3x3mm 6-Lead MLP)
Pin No.
Pin Name
Pin Description
P1
AGND
Analog Ground. P1 must be soldered to the PCB ground.
1FB
Feedback Input. Adjustable voltage option; connect this pin to the resistor divider.
2
PGND
Power Ground. This pin is connected to the internal MOSFET switches. This pin
must be externally connected to AGND.
3SW
Switching Node. This pin is connected to the internal MOSFET switches.
4
PVIN
Supply Voltage Input. This pin is connected to the internal MOSFET switches.
5VIN
Supply Voltage Input.
6NC
Not Connected. This pin is not internally connected.
Pin No.
Pin Name
Pin Description
P1
AGND
Analog Ground. P1 must be soldered to the PCB ground.
1
FB
Feedback Input. Adjustable voltage option; connect this pin to the resistor divider.
2
PGND
Power Ground. This pin is connected to the internal MOSFET switches. This pin
must be externally connected to AGND.
3SW
Switching Node. This pin is connected to the internal MOSFET switches.
4PVIN
Supply Voltage Input. This pin is connected to the internal MOSFET switches.
5VIN
Supply Voltage Input.
6EN
Enable Input. Logic high enables the chip and logic low disables the chip, reducing
the supply current to less than 1µA. Do not float this pin.
FAN2011
FAN2012
1
2
3
6
5
4
FB
PGND
SW
PVIN
VIN
NC
P1
(AGND)
L1
R2
R1
+5V
VOUT
4 x 10
µF
3.3
µH
10
µF
10K
1
2
3
6
5
4
FB
PGND
SW
PVIN
VIN
EN
P1
(AGND)
L1
R2
R1
+5V
VOUT
4 x 10
µF
3.3
µH
10
µF
10K
FAN2011
3x3mm 6-Lead MLP
FAN2012
3x3mm 6-Lead MLP
Top View
1
2
3
6
5
4
1
2
3
6
5
4
FB
PGND
SW
PVIN
VIN
NC
FB
PGND
SW
PVIN
VIN
EN
P1
(AGND)
P1
(AGND)


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