AS1324
Data Sheet - Pinout and Packaging
4 Pinout and Packaging
Pin Assignments
Figure 2. Pin Assignments (Top View)
EN
EN
1
2
3
5
VFB
1
2
3
5
VOUT
AS1324-12/
AS1324-15/
AS1324-18
AS1324
GND
SW
GND
SW
4
VIN
4 VIN
Pin Descriptions
Table 2. Pin Descriptions
Pin
Pin Name
Number
Description
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.
1
EN
Note: This pin should not be left floating.
Ground.
2
3
GND
SW
Switch Node Connection to Inductor. This pin connects to the drains of the internal main
and synchronous power MOSFET switches.
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.
4
5
VIN
VFB
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.)
VOUT
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