AS1372 Datasheet, PDF (1/14 Pages) ams AG – 350mA Dual Rail Linear Regulator

Datasheet
AS1372
350mA Dual Rail Linear Regulator
1 General Description
The AS1372 is a Dual Supply Rail Linear Regulator
designed for providing ultra-low voltages.
In a typical application the battery is directly connected
to VBIAS and VIN is connected to the output of a DC-DC
Converter.
The very low quiescent currents together with the
excellent transient features and the superior dropout are
making the AS1372 an ideal device for applications
running on batteries.
The robust design ensures that no under-voltage failure
can occur and the device is also equipped with an
internal protection against over-temperature and over-
current.
The device is available in fixed output voltages from
0.5V up to 2.2V in 100mV steps (50mV from 0.5V to
1.1V).
The AS1372 is available in a 5-bumps CS-WLP package
and is qualified for -40°C to +85°C operation.
2 Key Features
! Input Voltage: 0.7V to 4.5V
! Bias Supply Voltage: 2.5V to 5.5V
! Output Voltage: 0.5V to 2.2V in 100mV steps
! Output Voltage Accuracy: ±1.5%
! Dropout Voltage 135mV @ 350mA load
! Max. Output Current: 350mA
! Load Transient Response: ±15mV (typ.)
! Superior Efficiency
! Low Shutdown Current: 10nA
! High PSRR: >80dB @ 10Hz-1kHz, 60db @100kHz
! Noise Voltage: 50µV_RMS from 10Hz to 1000kHz
! Integrated Overtemperature/Overcurrent Protection
! Chip Enable Input
! Operating Temperature Range: -40°C to +85°C
! 5-bumps CS-WLP Package
3 Applications
The devices are ideal for powering cordless and mobile
phones, MP3 players, PDAs, hand-held computers,
digital cameras, and any other hand-held and/or battery-
powered device.
Figure 1. AS1372 - Typical Application Diagram




$

! "#
www.austriamicrosystems.com/LDOs/AS1372
Revision 1.01
1 - 14