AS1369
2 0 0 m A U l t r a - C o m pa c t L o w D r o p o u t R e g u l a t o r
D a ta S he e t
1 General Description
The AS1369 is an ultra compact high-performance low-
dropout 200mA voltage regulator designed for use with
very-low ESR output capacitors. The device can deliver
superior performance in all specifications critical to
battery-powered designs, and is perfectly suited for
mobile phones, PDAs, MP3 players, and other battery
powered devices.
The AS1369 is working with small input and output
capacitor of only 0.47µF offering PSRR of 72dB typical
and a noise level of 30µV
RMS
.
Typical quiescent current is around 25µA while in
shutdown the AS1369 requires less than 0.1µA
quiescent current.
Regulation performance is excellent even under low
dropout conditions, when the power transistor has to
operate in linear mode.
The AS1369 offers excellent low-noise performance
requiring no external bypass capacitance.
Multiple output voltage options between 1.2 and 5.0V in
100mV steps are available and the the minimum input
voltage is as low as 2.0V (depending on the output
voltage version), so the component can be used with the
coming new battery technologies.
The AS1369 is available in a 4-bump WL-CSP package.
2 Key Features
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Low Dropout Voltage: typ. 40mV @ 100mA
200mA High Maximum Load Current
2.0 to 5.5V Input Voltage
1.2 to 5.0V Output Voltage (in 100mV steps)
High Accuracy: ±2% Over Temperature
Thermal and Over Current Protection
25µA Quiescent Current
<0.1µA Standby Current
High PSRR: 72dB @ 1kHz
No Noise Bypass Capacitor Required
Low Noise: 30µV
RMS
Enable Pin
Package: 4-bump WL-CSP 0.5mm pitch
3 Applications
The device is ideal for mobile communication, battery
powered systems and any electronic equipment.
Figure 1. Block Diagram
V
IN
AS1369
V
OUT
C
IN
V
REF
_
+
C
OUT
A2
EN
B2
V
IN
B1
V
OUT
On/Off
Control
Thermal &
Over Current
Protection
A1
GND
EN
GND
(WLP; Top Through View)
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Revision 1.03
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AMSCO [ AUSTRIAMICROSYSTEMS AG ]
