Data Sheet

2
www.fairchildsemi.com
FAN2001/FAN2002 Rev. 1.0.2
FAN2001/FAN2002 1A High-Efficiency Step-Down DC-DC Converter
Pin Assignment
Figure 2. Pin Assignment
Pin Description
FAN2001 (3x3mm 6-Lead MLP)
FAN2002 (3x3mm 6-Lead MLP)
Pin No. Pin Name Pin Description
P1 AGND Analog Ground. P1 must be soldered to the PCB ground.
1V
IN
Supply Voltage Input.
2 PGND Power Ground. This pin is connected to the internal MOSFET switches. This pin must be
externally connected to AGND.
3ENEnable 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.
4 FB Feedback Input. Adjustable voltage option, connect this pin to the resistor divider.
5NCNo Connection Pin.
6SWSwitching Node. This pin is connected to the internal MOSFET switches.
Pin No. Pin Name Pin Description
P1 AGND Analog Ground. P1 must be soldered to the PCB ground.
1FBFeedback 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 exter-
nally connected to AGND.
3SWSwitching Node. This pin is connected to the internal MOSFET switches.
4 PV
IN
Supply Voltage Input. This pin is connected to the internal MOSFET switches.
5V
IN
Supply Voltage Input.
6ENEnable 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.
V
IN
PGND
EN FB
SW
NC
1
2
3
6
5
4
P1
(AGND)
FB
PGND
SW PV
IN
EN
V
IN
1
2
3
6
5
4
P1
(AGND)
Top View
3x3mm 6-Lead MLP
FAN2001 FAN2002