0.5A Positive Low Dropout Fixed-Mode Regulator With EN Function
Features
•
•
•
•
•
•
•
General Description
AP1119 is a low dropout positive adjustable or
fixed-mode regulator with minimum of 0.5A output
current capability. The product is specifically
designed to provide well-regulated supply for low
voltage IC applications such as high-speed bus
termination and low current 3.3V logic supply.
AP1119 is also well suited for other applications
such as VGA cards. AP1119 is guaranteed to have
<1.3V dropout at full load current making it ideal to
provide well regulated fixed outputs of 1.5 to 12V
with up to 18V input supply. The AP1119 offers a
TTL – Logic compatible enable pin.
1.3V maximum dropout at full load current
Fast transient response
Output current limiting
Built-in thermal shutdown
Packages: SOT89-5L
Good noise rejection
5-Terminal device with fixed 1.5V, 1.8V, 2.5V,
3.3V, 5.0V, 9.0V, 12V output.
Applications
•
•
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PC peripheral
Communication
CDROM..
Ordering Information
AP 1119 X XX X X
Low Dropout Regulator
Package
Y : SOT89-5L
Vout
15 : 1.5V
18 : 1.8V
25 : 2.5V
33 : 3.3V
50 : 5.0V
90 : 9.0V
12 : 12V
Lead Free
Blank : Normal
L : Lead Free Package
Packing
Blank : Tube
A : Taping
Typical Circuit
5V
C1
100uF
NC
Tab is Vout
ON OFF
EN
4
3
2
Vin
3.3V/0.5A
Vout
GND
5
1
C2
100uF
( 5V/3.3V fixed output )
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. 1.0 Aug 20, 2004
1/5
Not Recommended for New Design
AP1119
0.5A Positive Low Dropout Fixed-Mode Regulator With EN
Function
Connection Diagram
5 PIN SOT89
NC
Tab is Vout
EN
4
3
2
Vin
Vout
GND
5
1
Pin Descriptions
NAME
GND
Vout
Ground
The output of the regulator. A minimum of 10uF capacitor must be connected from this pin
to ground to insure stability.
The input pin of regulator. Typically a large storage capacitor is connected from this pin to
ground to insure that the input voltage does not sag below the minimum dropout voltage
during the load transient response. This pin must always be 1.3V higher than Vout in order
for the device to regulate properly.
The input pin of regulator. TTL/CMOS compatible input Logic high = disable output, Logic
Low or open =Enable output. (internal Pull-down resistor ~ l00K).
FUNCTION
Vin
EN
Absolute Maximum Ratings
Characteristics
DC Supply Voltage
Power Dissipation
Storage Temperature
Operating Junction Temperature Range
Symbol
Vin
P
D
T
ST
T
OP.
Values
-0.3 to 18
Internally Limited
-65 to +150
0 to +150
oC
oC
Unit
V
Anachip Corp.
www.anachip.com.tw
2/5
Rev. 1.0 Aug 20, 2004
Not Recommended for New Design
AP1119
0.5A Positive Low Dropout Fixed-Mode Regulator With EN Function
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