AS1367
Datasheet - P i n A s s i g n m e n t s
4 Pin Assignments
Figure 2. Pin Assignments (Top View)
OUT 1
BYP 2
SET 3
EN 4
Exposed
Pad
8 IN
AS1367
7 IN
6 POK
5 GND
Pin Descriptions
Table 1. Pin Descriptions
Pin Name
OUT
BYP
SET
EN
GND
POK
Description
Regulated Output Voltage.
The current flowing out of this pin is equivalent
to a DC load current. Fixed 1.2, 1.5, 1.8, 3.0, 3.3 and 4.5V output, as well as
1
versions from 1.2V up to 5.0V can be ordered.
Bypass this pin with 3.3µF to GND.
2
Bypass.
This pin should be connected via a 10nF capacitor to pin OUT.
Set Input.
Connect to GND for preset output. Connect to a resistive voltage-
3
divider between OUT and GND to set the output voltage between 1.2V and
5.0V.
Active-High Enable Input.
A logic low reduces the supply current to < 1µA.
4
Connect this pin to pin IN for normal operation.
Ground.
This pin also functions as a heat sink. Solder it to a large pad or to
5
the circuit-board ground plane to maximize power dissipation.
Power-OK Output.
Active-low, open-drain output indicates an out-of-
6
regulation condition. Connect a 100kΩ pull-up resistor to pin OUT for logic
levels. Leave this pin unconnected if the Power-OK feature is not used.
Input Voltage.
These pins should be connected to the positive terminal of
7, 8
the input capacitor. Bypass this pin with 1µF to GND. Input voltage can
range from 2.0V to 5.5V.
Exposed Pad.
This pin also functions as a heat sink. Solder it to a large pad
Exposed Pad or to the circuit-board ground plane to maximize power dissipation. Internally
it is connected GND.
Pin Number
IN
GND
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