600mA LOW DROPOUT LINEAR REGULATOR
600mA LOW DROPOUT LINEAR REGULATOR
General Description
The AP2317 is a series of low dropout three-terminal
regulators with a dropout of 1.1V at 600mA output cur-
rent.
This product has been optimized for low voltage where
transient response and minimum input voltage are criti-
cal. The AP2317 provides current limit and thermal
shutdown. Its circuit includes a trimmed bandgap refer-
ence to assure output voltage accuracy to be within
±1%.
On-chip thermal shutdown provides protection
against any combination of overload and ambient tem-
peratures that would create excessive junction tem-
peratures.
The AP2317 is available in 2.5V and 3.3V versions.
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 AP2317 series regulators are available in the
industry standard SOT-89-3, SOT-223 and TO-263-3
(for 3.3V only) power packages.
Data Sheet
AP1117M
AP2317
Features
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Low Dropout Voltage: 1.1V at 600mA Output
Current
Output Noise from 10Hz to 10KHz: 0.003%
PSRR at I
OUT
=300mA and f=120Hz: 75dB
Output Voltage Accuracy:
±
1%
On-chip Thermal Shutdown
Maximum Quiescent Current
:
I
QMAX
=5mA
ESD (Human Body Model): 3.5KV
Operation Junction Temperature: -40 to 125
o
C
Applications
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DVD/CD-ROM
USB Device
Add-on Card
DVD Player
PC Motherboard
SOT-89-3
SOT-223
TO-263-3
Figure 1. Package Types of AP2317
Sep. 2005 Rev. 1. 4
1
BCD Semiconductor Manufacturing Limited