Diodes AP139 300ma low-noise cmos ldo Datasheet

AP139
300mA LOW-NOISE CMOS LDO
General Description
Features
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Very Low Dropout Voltage
Low Current Consumption: Typ. 45µA, max. 60mA
Output Voltage: 1.5V, 1.8V, 2.0V, 2.5V, 2.8V, 3.0V
3.3V, and 3.5V
Guaranteed 300mA Output
Input Range from 2.7 up to 5.5V
Thermal Shutdown
Current Limiting
Stability with Low ESR Capacitors
Low Temperature Coefficient
Lead-free Package: SOT25
SOT25: Available in “Green” Molding Compound (No
Br, Sb)
Lead Free Finish/RoHS Compliant (Note 1)
The AP139 is a positive voltage linear regulator utilizing CMOS
technology. The features that include low quiescent current
(45µA typ.), low dropout voltage, and high output voltage
accuracy, make it ideal for battery applications. EN input
connected to the device will produce a low bias current.
The space-saving SOT25 package is attractive for “pocket” and
“hand held” applications.
This rugged device has both thermal shutdown, and current limit
protections to prevent device failure under the “worst” operating
conditions.
In a low noise, regulated supply application, a 10nF capacitor is
necessary to be placed in between Bypass and Ground.
The AP139 is stable with a low ESR output capacitor of 1.0µF or
greater.
Applications
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Personal Communication Devices
Home Electric/Electronic Appliances
PC Peripherals
Battery-Powered Devices
Ordering Information
AP139
Note:
Note:
XX X X X
Output voltage
Package
Lead free
15: 1.5V
18: 1.8V
20: 2.0V
25: 2.5V
28: 2.8V
30: 3.0V
33: 3.3V
35: 3.5V
W : SOT25
L : Lead Free
G : Green
Packing
- 7 : Taping
1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Device
Package Code
Packaging
AP139-XXW
W
SOT25
7” Tape and Reel
Quantity
Part Number Suffix
3000/Tape & Reel
-7
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
AP139 Rev. 2
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AP139
300mA LOW-NOISE CMOS LDO
Pin Descriptions
Pin Assignments
( T o p V ie w )
V
BYP
OUT
5
Pin
Name
VIN
GND
EN
BYP
VOUT
4
AP139
1
V
2
IN
3
Pin
No.
1
2
3
4
5
Function
Power Supply
Ground
Enable Pin
Bypass Signal Pin
Output
GND
EN
SO T25
Block Diagram
VIN
VOUT
Current
Limit
1uA
Thermal
Shutdown
R1
EN
-
BYP
AMP
+
Vref
R2
GND
Absolute Maximum Ratings
Symbol
VIN
IOUT
VOUT
Top
TMJ
PD
AP139 Rev. 2
Parameter
Input Voltage
Output Current
Output Voltage
ESD Classification
Operating Junction Temperature Range
Maximum Junction Temperature
Internal Power Dissipation
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Rating
+6
PD/ (VIN-VO)
GND - 0.3 to VIN+ 0.3
B
-40 to +125
150
250
Unit
V
mA
V
ºC
ºC
mW
MARCH 2007
© Diodes Incorporated
AP139
300mA LOW-NOISE CMOS LDO
Electrical Characteristics
Symbol
Parameter
VIN
Input Voltage
IQ
Quiescent Current
ISTB
Standby Current
VOUT
(TA = +25ºC, unless otherwise noted)
Min.
Note 4
-
Typ.
45
2.0
Max.
5.5
60
3.0
Unit
V
µA
µA
Output Voltage Accuracy IO = 1mA, VIN = 5V
-2
-
2
%
VOUT Temperature
Coefficient
-
50
-
ppm/ oC
-
-
0.45
V
300
-
-
mA
300
450
-
mA
1.7
150
0.1
0.3
60
50
40
75
55
30
-
300
0.3
1
-
mA
%
%
-
-
0.8
V
-
-
<0.1
µA
-
130
-
o
-
20
-
o
VDROPOUT Dropout Voltage
IOUT
Output Current
ILIMIT
Current Limit
Test Conditions
IO = 0mA
VIN = 5.0V, VOUT = 0V, VEN < VEL
IO = 1mA to 300mA,
VOUT = VO(NOM) - 1.5%
VOUT > 1.05V
Ishort
Short Circuit Current
△VLINE Line Regulation
△VLOAD Load Regulation
PSRR
PSRR
VEH
VEL
IEN
OTS
OTH
θJA
θJC
Note:
VO ≥2.8V
Vcc = 5V, Vout < 1.05V
IOUT=1mA, VIN =( VOUT +1V ) to 5.5V
IO = 1mA to 300mA, VIN = 5V
f = 1KHz
I = 100mA,
Power Supply Rejection O
f = 10KHz
CO = 2.2µF ceramic
f = 100KHz
f = 1KHz
IO = 100mA,
Power Supply Rejection CO = 2.2µF ceramic,
f = 10KHz
CBYP = 20nF
f = 100KHz
Output ON
EN Input Threshold
Output OFF
Enable Pin Current
Over Temperature
Shutdown
Over Temperature
Hysteresis
Thermal Resistance
Thermal Resistance
SOT25 (Note 4)
SOT25 (Note 4)
226
34
dB
dB
V
C
C
ºC/W
ºC/W
3. VIN(MIN) = VOUT + VDROPOUT.
4. Test conditions for SOT25: Devices mounted on FR-4 PC board, MRP, 1 oz. copper, single sided, calibrate at TJ=85 ºC, measure at TA=25 ºC,
no heat Sink, no air flow.
AP139 Rev. 2
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AP139
300mA LOW-NOISE CMOS LDO
Typical Application
VIN
IN
VOUT
OUT
AP139
GND
BYP
C1
1uF
EN
C2
10nF
C3
1uF
Typical Performance Characteristics
V c c V s Q u ie s c e n t C u r r e n t
100
90
1.4
80
Dropout Voltage (V)
Quiescent Current (μ A)
V out vs. Dropout Voltage
1.6
70
60
50
40
30
1.2
1
0.8
0.6
Io = 300mA
0.4
Io = 200mA
20
T A = 2 5℃
10
0
3 .5
0.2
0
4
4 .5
5
5 .5
6
Io = 100mA
1.5
1.8
2
Power Supply Rejection Ratio
Iout = 100mA
-10
-20
-20
-30
-30
-40
-50
BP = 1nF
-60
BP = 5nF
3.5
BP = 10nF
100mA
-40
10mA
-50
-60
-70
BP = 10nF
-80
-80
BP = 20nF
1.0E+01
1.0E+02
1.0E+03
1.0E+04
1.0E+05 1.0E+06
-90
1.0E+00
Frequency (Hz)
AP139 Rev. 2
3.3
1mA
-70
-90
1.0E+00
3
Power Supply Rejection Ratio
0
PSRR (dB)
PSRR (dB)
-10
2.8
V out (V)
V c c (V )
0
2.5
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1.0E+01
1.0E+02
1.0E+03
1.0E+04
1.0E+05
1.0E+06
Frequency (Hz)
MARCH 2007
© Diodes Incorporated
AP139
300mA LOW-NOISE CMOS LDO
Typical Performance Characteristics
(Continued)
Power Supply Rejection Ratio
Vout Vs Current Limit
0
0.7
BP=0
-10
0.6
100mA
-20
0.5
-40
Current Limit (A)
PSRR (dB)
-30
10mA
-50
-60
1mA
0.4
0.3
0.2
-70
0.1
-80
-90
1.0E+00
Vcc=5V
0
1.0E+01
1.0E+02
1.0E+03
1.0E+04
1.0E+05
1.5
1.0E+06
1.8
2
2.5
2.8
3
3.3
3.5
Vout (V)
Frequency (Hz)
V c c V s S h o rt C u rre n t
400
350
Short Current (mA)
300
250
T o p to b o tto m
200
V o u t= 1 .5 V
150
V o u t= 1 .8 V
V o u t= 2 .5 V
100
V o u t= 3 .3 V
50
0
3 .5
4
4 .5
5
5 .5
6
V c c (V )
Function Description
The AP139 of CMOS regulators contain a PMOS pass transistor,
voltage reference, error amplifier, over-current protection,
thermal shutdown.
The P-channel pass transistor receives data from the error
amplifier, over-current protection, and thermal protection circuits.
During normal operation, the error amplifier compares the output
voltage to a precision reference. The over-current and thermal
shutdown circuits become active when the junction temperature
o
exceeds 130 C, or the current exceeds 300mA. During thermal
shutdown, the output voltage remains low. Normal operation is
o
restored when the junction temperature drops below 110 C.
The AP139 switches from voltage mode to current mode when
the load exceeds the rated output current. This prevents
over-stress.
AP139 Rev. 2
Enable
The enable pin normally floats high. When actively, pulled low,
the PMOS pass transistor shuts off, and all internal circuits are
powered down. In this state, the quiescent current is less than
2µA. This pin behaves much like an electronic switch.
External Capacitor
The AP139 is stable with a low ESR output capacitor to ground of
1.0µF or greater. It can keep stable even with higher ESR
capacitors. A second capacitor is recommended between the
input and ground to stabilize VIN. The input capacitor should be
larger than 0.1µF to have a beneficial effect. All capacitors should
be placed in close proximity to the pins. A “quiet” ground
termination is desirable.
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AP139
300mA LOW-NOISE CMOS LDO
Marking Information
(Top View)
4
7
5
XX Y M X
1
2
XX : Identification Code
Y : Year: 0-9
M : Month A~L
X : L : Lead Free
G : Green
3
SOT 25
Package Information
Identification
Code
N0
N1
N2
N3
N4
N5
N6
N7
Output Version
AP139-1.5V
AP139-1.8V
AP139-2.0V
AP139-2.5V
AP139-2.8V
AP139-3.0V
AP139-3.3V
AP139-3.5V
( unit: mm )
Package Type: SOT25
AP139 Rev. 2
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AP139
300mA LOW-NOISE CMOS LDO
IMPORTANT NOTICE
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further
notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither
does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will
agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages.
LIFE SUPPORT
Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the
President of Diodes Incorporated.
AP139 Rev. 2
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