AS1364
Datasheet - Pinout
4 Pinout
Pin Assignments
Figure 2. Pin Assignments (Top View)
POK
EN
IN
1
2
3
4
8
7
6
5
GND
SET/BYP
OUT
AS1364
IN
OUT
Pin Descriptions
Table 2. Pin Descriptions
Pin Number
Pin Name
Description
Note: Open-Drain POK Output. POK remains low while VOUT is below the POK
threshold. Connect a 100kΩ pull-up resistor from this pin to OUT to obtain an output
voltage (see Figure 1 on page 1).
1
POK
Active-Low Shutdown Input. A logic low disables the output and reduces the
supply current to 0.1µA. In shutdown, the POK output is low and OUT high
impedance.
2
EN
VDD: Normal operation.
GND: Shutdown.
2.0V to 5.5V Supply Voltage. Bypass with a 4.7µF input capacitor to GND (see
Capacitor Selection and Regulator Stability on page 12). These inputs are internally
connected, but they also must be externally connected for proper operation.
Regulator Output. Bypass with a 4.7µF low-ESR output capacitor to GND. Connect
the OUT pins together externally.
3, 4
5, 6
IN
OUT
Voltage-Setting Input. Connect to GND to select the factory-preset output voltage.
Connect this pin to an external resistor-divider for adjustable-output operation (see
Figure 1 on page 1). (AS1364-AD only)
Bypass Pin. Connect a 10nF capacitor from this pin to OUT to improve PSRR and
noise performance. (AS1364-AD does not offer this feature)
7
8
SET/BYP
GND
Ground
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