600mA LOW DROPOUT LINEAR REGULATOR AP2317 AP1117M
Preliminary Datasheet
800mA LOW DROPOUT LINEAR REGULATOR AZ1117B
1
Mar. 2006 Rev. 1. 0 BCD Semiconductor Manufacturing Limited
Figure 1. Package Type of AZ1117B
SOT-223
General Description
The AZ1117B is a low dropout three-terminal regula-
tor with a dropout of 1.2V at 800mA output current.
The AZ1117B has been optimized for low voltage
where transient response and minimum input voltage
are critical. It provides current limit and thermal shut-
down. Its circuit includes a trimmed bandgap reference
to assure output voltage accuracy to be within ±1%.
On-chip thermal shutdown provides protection against
a combination of high current and ambient temperature
that would create excessive junction temperature.
The AZ1117B is available in 1.8V, 2.5V and 3.3V ver-
sions. The fixed versions integrate the adjust resistors.
It is also available in an adjustable version which can
set the output voltage with two external resistors.
The AZ1117B is available in the industry-standard
SOT-223 power package.
Features
·Low Dropout Voltage: 1.2V at 800mA Output
Current
·Output Noise from 10Hz to 10KHz: 0.003%
·PSRR at I
OUT
=300mA and f=120Hz: 70dB
·Output Voltage Accuracy: ±1%
·On-chip Thermal Shutdown
·Maximum Quiescent Current: I
QMAX
=6mA
·Operation Junction Temperature: -20 to 105
o
C
Applications
·USB Device
·Add-on Card
·DVD Player
·PC Motherboard