AS1334 austriamicrosystems AG, AS1334 Datasheet - Page 2

• Manufacturer Part Number: AS1334
• Description: 650mA Ultra low Ripple Step Down DC/DC Converter
• Manufacturer: austriamicrosystems AG

AS1334
Datasheet - P i n A s s i g n m e n t s
4 Pin Assignments
Figure 2. Pin Configuration
Pin Descriptions
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Table 1. Pin Descriptions
Pin Name
SGND
PGND
PVIN
POK
VDD
SW
EN
FB
Pin Number
5, 9
1
2
3
4
6
7
8
Feedback Pin. Connect to the output at the output filter capacitor.
Power-OK.
0 = V
1 = V
Enable Input. Set this digital input high for normal operation. For shutdown,
set low.
+2.7V to +5.5V Power Supply Voltage. Analog Supply Input.
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.
POK
VDD
EN
FB
OUT
OUT
1
2
3
4
< 90% of V
> 90% of V
Revision 1.04
AS1334
SGND
OUTNOM
OUTNOM
9
8 PGND
7 SW
6 PVIN
5 SGND
.
.
Description
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