AS1333
Data Sheet - P i n A s s i g n m e n t s
4 Pin Assignments
Figure 2. Pin Configuration
Top View
SW
PVIN
A1
A2
A3
PGND
PGND
A3
Bottom View
SW
A2
A1
PVIN
VDD
B1
B3
AGND
AGND
B3
B1
VDD
EN
C1
C2
NC
C3
FB
FB
C3
C2
NC
C1
EN
Pin Descriptions
Table 1. Pin Descriptions
Pin Name
PVIN
Pin Number
A1
Note:
for guaranteed V
OUT
= 3.09V set V
IN
= 3.25V to 5.5V;
+2.7V to +5.5V Power Supply Voltage.
Analog Supply Input.
VDD
EN
NC
FB
AGND
PGND
SW
B1
C1
C2
C3
B3
A3
A2
Note:
for guaranteed V
OUT
= 3.09V set V
IN
= 3.25V to 5.5V;
Enable Input.
Set this digital input high for normal operation. For shutdown,
set low.
May be connected to VDD, SGND or floating.
Feedback Pin.
Connect to the output at the output filter capacitor.
Analog and Control Ground.
Power Ground.
Switch Pin.
Switch node connection to the internal PFET switch and NFET
synchronous rectifier. Connect to an inductor with a saturation current rating
that exceeds the maximum switch peak current limit specification of the
AS1333.
Description
+2.7V to +5.5V Power Supply Voltage.
Input to the internal PFET switch.
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