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Datasheet> All Categories > Power/power management> The power supply circuit> L11815AG-28-TA3-D-R
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L11815AG-28-TA3-D-R

Description
Fixed Positive LDO Regulator, 2.8V, 0.8V Dropout, CMOS, HALOGEN FREE, TO-220, 3 PIN
CategoryPower/power management    The power supply circuit   
File Size180KB，4 Pages
ManufacturerUNISONIC TECHNOLOGIES CO.,LTD
Websitehttp://www.unisonic.com.tw/
Environmental Compliance
Download Datasheet Parametric View All

L11815AG-28-TA3-D-R Overview

Fixed Positive LDO Regulator, 2.8V, 0.8V Dropout, CMOS, HALOGEN FREE, TO-220, 3 PIN

L11815AG-28-TA3-D-R Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerUNISONIC TECHNOLOGIES CO.,LTD
Parts packaging codeSFM
package instructionHALOGEN FREE, TO-220, 3 PIN
Contacts3
Reach Compliance Codecompliant
ECCN codeEAR99
AdjustabilityFIXED
Maximum drop-back voltage 10.8 V
Maximum absolute input voltage8 V
Maximum input voltage7 V
Minimum input voltage3.6 V
JESD-30 codeR-XSFM-T3
Maximum grid adjustment rate0.0028%
Maximum load regulation0.028%
Number of functions1
Output times1
Number of terminals3
Working temperatureTJ-Max150 °C
Maximum output current 11.5 A
Maximum output voltage 12.842 V
Minimum output voltage 12.758 V
Nominal output voltage 12.8 V
Package body materialUNSPECIFIED
Encapsulate equivalent codeSIP3,.1TB
Package shapeRECTANGULAR
Package formFLANGE MOUNT
method of packingTAPE AND REEL
Peak Reflow Temperature (Celsius)NOT SPECIFIED
Certification statusNot Qualified
Regulator typeFIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
surface mountNO
technologyCMOS
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationSINGLE
Maximum time at peak reflow temperatureNOT SPECIFIED
Maximum voltage tolerance1.5%

L11815AG-28-TA3-D-R Preview

UNISONIC TECHNOLOGIES CO., LTD
L11815A
1.5A CMOS LDO
DESCRIPTION
The UTC
L11815A
is a COMS linear regulator. One of it’s
feature is very low quiescent current typical as low as 45μA and its
dropout voltage is extremely low with 1.5A output current.
The internal circuit includes thermal shutdown and current
fold-back mechanism to prevent device failure when the circuit is
operated in the bad conditions.
In application, the UTC
L11815A
needs a low noise, regulated
supply. For stable operation, the output capacitance value should
be 4.7μF or more.
The UTC
L11815A
is an ideal for battery applications, such as
instrumentations, portable electronics, wireless devices, PC
peripherals, and battery powered widgets. The output voltage
values are set during manufacturing and the accuracy is tighten
1.5%.
CMOS IC
FEATURES
* Quiescent Current (45μA typ.)
* Very Low Dropout Voltage
* Guaranteed 1.5A output
* Accuracy :
±1.5%
* Over-Temperature ShutDown
* With Current Limiting
* Short Circuit Current Fold-Back
* Low Temperature Coefficient
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
L11815AL-xx-AA3-x-R
L11815AG-xx-AA3-x-R
L11815AL-xx-TA3-x-R
L11815AG-xx-TA3-x-R
L11815AL-xx-TN3-x-R
L11815AG-xx-TN3-x-R
L11815AL-xx-TN3-x-T
L11815AG-xx-TN3-x-T
L11815AL-xx-TQ2-x-R
L11815AG-xx-TQ2-x-R
L11815AL-xx-TQ2-x-T
L11815AG-xx-TQ2-x-T
Note: Pin Assignment: G:GND O:V
OUT
I:V
IN
xx: Output Voltage, refer to Marking Information.
Package
SOT-223
TO-220
TO-252
TO-252
TO-263
TO-263
Pin Assignment
Packing
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tube
A: GOI
D: IGO
www.unisonic.com.tw
Copyright © 2012 Unisonic Technologies Co., Ltd
1 of 4
QW-R502-346.G
L11815A
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
MARKING
CMOS IC
Pin Code
SOT-223
TO-252
TO-263
TO-220
15: 1.5V
19: 1.9V
25: 2.5V
28: 2.8V
33: 3.3V
Voltage Code
L11815A
XX
1
2
3
G: Halogen Free
L: Lead Free
Date Code
Pin Code
Voltage Code
UTC
L11815A
XX
L: Lead Free
G: Halogen Free
Lot Code
Date Code
BLOCK DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 4
QW-R502-346.G
L11815A
ABSOLUTE MAXIMUM RATING
PARAMETER
CMOS IC
SYMBOL
RATINGS
UNIT
Input Voltage
V
IN
-0.3 ~ +8
V
Output Voltage
V
OUT
GND - 0.3 ~ V
IN
+ 0.3
V
Power Dissipation
P
D
Internally limited
Junction Temperature
T
J
150
°C
Operating Temperature
T
OPR
- 40 ~ +85
°C
Storage Temperature
T
STG
- 65 ~ +150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL DATA
PARAMETER
SOT-223
Junction to Ambient
TO-220/ TO-263
TO-252
SOT-223
Junction to Case
TO-220/ TO-263
TO-252
SYMBOL
θ
JA
RATINGS
140
62.5
103
15
4
12
UNIT
°C/W
θ
JC
°C/W
ELECTRICAL CHARACTERISTICS
(
V
IN
= V
O(Nom)
+2V, T
A
= 25°C,
unless otherwise specified.)
PARAMETER
Input Voltage
Output Voltage Accuracy
Line Regulation
Load Regulation
Output Current
Current Limit
Short Circuit Current
Quiescent Current
Ground Pin Current
Dropout Voltage
Over Temperature Shutdown
Over Temperature Hysteresis
Temperature Coefficient of
Output Voltage
Power Supply Rejection
Output Voltage Noise
Note: V
IN(MIN)
=V
OUT
+V
D
SYMBOL
V
IN
V
OUT
Δ
V
OUT
V
OUT
Δ
V
OUT
V
OUT
I
OUT
I
LIMIT
I
SC
I
Q
I
GND
V
D
OTS
OTH
T
C
V
O
PSRR
e
N
f=100Hz
I
OUT
=100mA, C
O
=4.7µF f=1kHz
f=10kHz
f=10Hz ~ 100kHz, I
OUT
=10mA, Co=4.7µF
TEST CONDITIONS
I
O
=1mA
I
OUT
=1mA
V
IN
=V
OUT
+1~ V
OUT
+2
I
OUT
=1mA ~ 1500mA
MIN
Note
-1.5
-0.15
-0.1
-1
1500
1500
V
IN
= V
O(NOM)
+1V, V
OUT
<0.4V
I
OUT
=0mA
I
OUT
=1mA ~ 1500mA
V
O(NOM)
≤2.0V
I
OUT
=1.5A
V
OUT
=V
O(NOM)
-2.0%
V
O(NOM)
>2.0V
TYP
MAX
7
1.5
0.15
0.1
1
UNIT
V
%
%
%
%
mA
mA
mA
µA
µA
mV
mV
°C
°C
ppm/°C
dB
dB
dB
µV
RMS
V
OUT
<2.0V
V
OUT
≥2.0V
0.02
0.2
2000
750
45
45
70
1300
800
150
30
30
70
50
20
30
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 4
QW-R502-346.G
L11815A
DETAILED DESCRIPATION
CMOS IC
The UTC
L11815A
of CMOS regulators insist of a PMOS pass transistor, voltage reference, error amplifier,
over-current protection, and thermal shutdown.
The error amplifier, over-current shutdown, and thermal protection circuits provides data for P-channel pass
transistor. The error amplifier takes output voltage for a precision reference in the normal operation and the normal
operation is restored when the junction temperature drops below 120°C.Over-current and Thermal shutdown circuits
start to work when the junction temperature is higher than 150 °C, or the current exceeds 2.2A. The output voltage
stays low when the thermal shutdown is in active.
The UTC
L11815A
behaves like a current source when the load reaches 2.2A. But the current would fall back to
600mA to prevent excessive power loss when the load impedance value is below 0.3Ω.Normal operation is restored
when the load resistance value is higher than 0.75
Ω.
EXTERNAL CAPACITORS
The UTC
L11815A
has an output capacitor to ground of 4.7μF or more in the stable operation. Ceramic
capacitors can provide the lowest ESR with the best AC performance. Aluminum Electrolytic capacitors, in contrast,
have the highest ESR with poorest AC response. Unfortunately, large value ceramic capacitors are comparatively
expensive. So we can parallel a 0.1μF ceramic capacitor with a 10μF Aluminum Electrolytic. The result is low ESR,
high capacitance, and low overall cost.
A second capacitor is recommended between the input and ground to stabilize input voltage. To get an ideal
effect the value of the input capacitor should be at least 0.1μF.
All capacitors should be placed in close proximity to the pins. This can be achieved with a star connection.
TYPICAL APPLICATION CIRCUIT
V
IN
V
OUT
V
IN
L11815A
GND
V
OUT
C1=1µF
C2=4.7µF
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 4
QW-R502-346.G
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