AS1369
200mA Ultra-Compact Low Dropout Regulator
Data Sheet
www.austriamicrosystems.com Revision 1.03 1 - 16
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 inp ut 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 betwee n 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.
Figure 1. Block Diagram
2 Key Features
! Low Dropout V o ltage: typ. 40mV @ 100mA
! 200mA High Maximum Lo ad 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: 30µVRMS
! 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.
VREF
On/Off
Control
Thermal &
Over Current
Protection
VOUT
VIN
_
+
GND
C
OUT
EN
CIN
B1
V
OUT
A1
GND
B2
V
IN
A2
EN
(WLP; Top Through View)
AS1369
