AS1324
Data Sheet - P i n o u t a n d P a c k a g i n g
4 Pinout and Packaging
Pin Assignments
Figure 2. Pin Assignments (Top View)
EN 1
5 VFB
EN 1
5 VOUT
GND 2
AS1324
GND 2
AS1324-12/
AS1324-15/
AS1324-18
4 VIN
SW 3
4 VIN
SW 3
Pin Descriptions
Table 2. Pin Descriptions
Pin
Number
Pin Name
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.
Note:
This pin should not be left floating.
Ground.
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.
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.)
1
EN
2
3
4
GND
SW
VIN
VFB
5
VOUT
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