2

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FAN5631/FAN5632 Rev. 1.0.2

Typical Application

Pin Assignment

Figure 3. Pin Assignment

Pin Description

Pin No.

Pin Name

Pin Description

connected to either a logic high or logic low level.

and the output voltage accuracy is relaxed in order to meet optimum efficiency. However, if a

logic high is applied, the device will operate like a typical charge pump converter.

2EN

Enable Input Pin. If a logic high is applied to the EN pin, the device is enabled. However, if a

logic low is applied, the device is disabled and the supply current is reduced to less than 1µA.

The EN pin can not be left floating and must be connected to either a logic high or logic low level.

Bucket Capacitor Positive Pin.

4

GND

Ground Pin. This pin is connected to the internal MOSFET switches. This pin must be externally

connected to GND.

Bucket Capacitor Negative Pin.

Output Voltage Pin.

7NC

Not Connected. This pin is not internally connected.

8NC

Not Connected. This pin is not internally connected.

Supply Voltage Input.

10

NC

Not Connected. This pin is not internally connected.

40

50

60

70

80

90

FAN5631

FAN5632 with

optimization

1:1 Mode

2:1 Mode

Input Voltage (V)

EN

10

µF

10

µF

NC

NC

NC

GND

10

9

6

7

8

1

2

3

4

5

ON

OFF

NC

NC

NC

GND

EN

10

9

6

7

8

1

2

3

4

5

3x3mm 10-Lead MLP

Top View

Figure 2. Typical Efficiency Graph

Figure 1. Typical Application