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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

Supply Voltage Input. This pin is connected to the internal MOSFET switches.

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.

Supply Voltage Input. This pin is connected to the internal MOSFET switches.

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

NC

P1

(AGND)

L1

R2

R1

+5V

4 x 10

µF

3.3

µH

10

µF

10K

Ω

1

2

3

6

5

4

FB

PGND

SW

EN

P1

(AGND)

L1

R2

R1

+5V

4 x 10

µF

3.3

µH

10

µF

10K

Ω

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

NC

FB

PGND

SW

EN

P1

(AGND)

P1

(AGND)