www.ams.com/DC-DC_Step-Up/AS1324

Revision 1.06

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AS1324

Datasheet - P i n A s s i g n m e n t s

4 Pin Assignments

Figure 2. Pin Assignments (Top View)

4.1 Pin Descriptions

Table 2. Pin Descriptions

Pin Number

Pin Name

Description

1

EN

Enable Input. Driving this pin above 1.5V enables the device. Driving this pin below 0.3V puts the

device in shutdown mode. In shutdown mode all functions are disabled while SW goes high

impedance, drawing <1µA supply current.

Note:

This pin should not be left floating.

2

GND

Ground.

3

SW

Switch Node Connection to Inductor. This pin connects to the drains of the internal main and

synchronous power MOSFET switches.

4

Input Supply Voltage. This pin must be closely decoupled to GND with a

≥ 4.7µF ceramic capacitor.

Connect to any supply voltage between 2.7 to 5.5V.

5

Feedback Pin. This pin receives the feedback voltage from the external resistor divider across the

output. (Adjustable voltage variant only.)

Output Voltage Feedback Pin. An internal resistor divider steps the output voltage down for

comparison to the internal reference voltage. (Fixed voltage variants only.)

5

VFB

AS1324

4

VIN

2

GND

3

SW

1

EN

5

VOUT

AS1324-12/

AS1324-15/

AS1324-18

4

VIN

2

GND

3

SW

1

EN