AS1363
500mA, Low-Dropout Linear Voltage Regulator
Datasheet
www.austriamicrosystems.com Revision 1.03 1 - 14
1 General Description
The AS1363 is a low-dropou t linear regulator that oper-
ates from a +2.0V to +5.5V supply and delivers a guar-
anteed 500mA load current with low 150mV dropout.
The device is available in two versions (see Table 1).
One version has a high-accuracy output with a preset
voltage (1.2, 1.5, 1.8, 3.0, 3.3, or 4.5V). Th is voltage is
internally trimmed and also offers a Bypass pin. With a
capacitor connected to this Bypass pin, the PSRR and
the Noise performance is improved.
At the other version the output voltage is user-adjustable
(1.2V to 5.3V) and offers an SET pin for setting the out-
put voltage.
Table 1. Standard Products
A low supply current (65µA typ.) at maximum load is
making the device ideal for portable battery-operated
equipment.
Other features are included such as an active-low open-
drain reset output that indicates when the output is out
of regulation, a low-current (30nA typ.) shutdown mode,
an integrated short-circuit and a thermal shutdown pro-
tection.
The AS1363 is available in a 6-pin SOT23 package.
Figure 1. Typical Application Circuit
2 Key Features
! Guaranteed Output Current: 500mA
! Low Dropout: 150mV @ 500mA
! 2.0V to 5.5V Input Voltage
! Fixed Output Voltage: 1.2V to 5.0V
! User-Adjustable Output Voltage: 1.2V to 5.3V
! Power OK Output
! Low Quiescent Current: 40µA
! Low Shutdown Current: 30nA
! Thermal Overload Protection
! Output Current Limit
! 6-pin SOT23 Package
3 Applications
The device is ideal for laptops, PDAs, portable audio
devices, mobile phones, cordless phones, and any other
battery-operated portable device.
Model Output Type BYP SET
AS1363-AD Adjustable No Yes
AS1363-_ _ Fixed Yes No
AS1363-AD
COUT
2.2µF
1
IN
6
OUT
3
EN
2
POK
5
SET
CIN
1µF
VIN
2.0V to 5.5V
V
OUT
1.2V to 5.3V
4
GND
On
Off
R1
R2
RPOK
100kΩ
VOUT Logic
Supply Voltage
To Controller
