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AX1112 PDF даташит

Спецификация AX1112 изготовлена ​​​​«AXElite» и имеет функцию, называемую «1.2V 350mA Low Dropout Linear Regulator».

Детали детали

Номер произв AX1112
Описание 1.2V 350mA Low Dropout Linear Regulator
Производители AXElite
логотип AXElite логотип 

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AX1112 Даташит, Описание, Даташиты
AX1112
1.2V 350mA Low Dropout Linear Regulator
GENERAL DESCRIPTION
AX1112 is a low dropout positive fixed-mode regulator with minimum of 350mA 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. AX1112 is also well suited for other applications such as VGA cards. AX1112 is
guaranteed to have lower than 1.2V dropout at full load current making it ideal to provide
well-regulated outputs.
FEATURES
- Fixed 1.2V + 2% output voltage
- Fast transient response
- Output current limiting
- Built-in thermal shutdown
- Good noise rejection
- Packages: SOT-23-3L
BLOCK DIAGRAM
Vin 3
Thermal
Shutdown
2 Vout
+
+-
CURRENT
LIMIT
1.2V +
+
- 1 GND
1/6
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.4 Aug.26, 2010









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AX1112 Даташит, Описание, Даташиты
AX1112
PIN ASSIGNMENT
The package of AX1112 is SOT-23-3L; the pin assignment is given by:
(Top View)
VOUT
3
AX1112
12
GND
VIN
SOT-23-3L
Name
Description
Adj
(GND)
A resistor divider from this pin to the VOUT pin
and ground sets the output voltage. (Ground
only for Fixed-Mode)
The output of the regulator. A minimum of 10uF
VOUT
capacitor (0.15Ω ≤ ESR 20Ω) must be
connected from this pin to ground to insure
stability.
The input pin of regulator. Typically a large
storage capacitor (0.15Ω ≤ ESR 20Ω) is
connected from this pin to ground to insure
VIN
that the input voltage does not sag below the
minimum dropout voltage during the load
transient response. This pin must always be
1.4V higher than VOUT in order for the device to
regulate properly.
ORDER/MARKING INFORMATION
Order Information
Top Marking
AX1112 X X
Package Packing
R: SOT-23-3L Blank : Bag
A : Taping
Output Type:
DB : 1.2V
L LYWX
ID Code: internal
WW : 01~26(A~Z)
27~ 52( a ~ z)
Year : A = 2010
1 = 2011
ABSOLUTE MAXIMUM RATINGS
Parameter
DC Supply Voltage
Operating Junction Temperature Range
Maximum junction Temperature
Power Dissipation
(multi-layer PCB cupper area 2mm*2mm)
TA=25°C, TJ=125°C, SOT-23
Storage Temperature
Symbol
Vin
TOP
TMJ
PD
Rating
-0.3 to 15
-40 to +125
150
Unit
V
°C
°C
450 mW
TST -65 to +150 °C
2/6
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.4 Aug.26, 2010









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AX1112 Даташит, Описание, Даташиты
AX1112
ELECTRICAL CHARACTERISTICS
(Under Operating Conditions)
Characteristics
Conditions
Operation Input
Voltage
IOUT = 350mA
Min Typ Max Units
2.5 - 12 V
Reference Voltage IOUT = 10mA, 2.5VIN12V, TJ = 25°C 1.176 1.200 1.224 V
Line Regulation
Load Regulation
Dropout Voltage
(VIN-VOUT)
Current Limit
IOUT = 10mA, 2.5VIN12V,
TJ = 25°C (Note 1,2)
VIN=2.5V, 10mA< IOUT<350mA,
TJ=25°C (Note 1,2)
IOUT = 350mA , VOUT=1%VOUT
(VIN-VOUT) = 2V
- 1.2 6 mV
- - 12 mV
- 1.1 1.2 V
0.5 - - A
Minimum Load
Current
Ripple Rejection
Temperature
Stability
JA Thermal
Resistance
Junction-to-Ambient
(Note4)
JC Thermal
Resistance
Junction-to-Case
0°CTj125°C
F=120Hz, COUT=25uF
Tantalum, IOUT=350mA
IOUT=10mA
SOT-23
SOT-23
- 5 10 mA
- 60 70 dB
- 0.5 - %
- 220 - °C/W
- 120 - °C/W
Note1: See thermal regulation specifications for changes in output voltage due to heating effects. Line and load
regulation are measured at a constant junction temperature by low duty cycle pulse testing. Load
regulation is measured at the output lead = 1/18” from the package.
Note2: Line and load regulation are guaranteed up to the maximum power dissipation of 5W. Power dissipation
is determined by the difference between input and output differential and the output current.
Guaranteed maximum power dissipation will not be available over the full input/output range.
Note3: Quiescent current is defined as the minimum output current required in maintaining regulation. At 12V
input/output differential the device is guaranteed to regulate if the output current is greater than 10mA.
Note4: VOUT Pin is connected to the multi-layer PCB cupper area 2mm*2mm
3/6
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.4 Aug.26, 2010










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