AS1334
Datasheet - P i n A s s i g n m e n t s
4 Pin Assignments
Figure 2. Pin Configuration
FB 1
POK 2
8 PGND
7 SW
AS1334
EN 3
VDD 4
SGND 9
6 PVIN
5 SGND
Pin Descriptions
Table 1. Pin Descriptions
Pin Name
FB
POK
EN
VDD
SGND
PVIN
SW
PGND
Pin Number
Description
1
Feedback Pin.
Connect to the output at the output filter capacitor.
Power-OK.
0 = V
OUT
< 90% of V
OUTNOM
.
2
1 = V
OUT
> 90% of V
OUTNOM
.
Enable Input.
Set this digital input high for normal operation. For shutdown,
3
set low.
+2.7V to +5.5V Power Supply Voltage.
Analog Supply Input.
4
5, 9
6
7
8
Analog and Control Ground.
+2.7V to +5.5V Power Supply Voltage.
Input to the internal PFET switch.
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
AS1334.
Power Ground.
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