AME AME8845BEGS180Z 3a cmos ldo Datasheet

AME, Inc.
AME8845
n General Description
3A CMOS LDO
n Functional Block Diagram
The AME8845 family of linear regulators feature low
quiescent current (100µA typ.) with low dropout voltage,
making them ideal for battery applications. It is available
in TO-252, SOT-223, TO-263 and TO-220 packages. The
space-efficient TO-252, SOT-223 package is attractive for
"Pocket" and "Hand Held" applications.
Output voltages are set at the factory and trimmed to
1.5% accuracy.
OUT
IN
Overcurrent
Shutdown
Thermal
Shutdown
EN
R1
-
These rugged devices have both Thermal Shutdown,
and Current Fold-back to prevent device failure under the
"Worst" of operating conditions.
AMP
+
The AME8845 is stable with an output capacitance of
2.2µF or greater.
R2
Vref
n Features
GND
l Very Low Dropout Voltage
l Guaranteed 3A Output
l Accurate to within 1.5%
l 100µA Quiescent Current Typically
n Typical Application
l Over-Temperature Shutdown
l Current Limiting
l Short Circuit Current Fold-back
VIN
l Space-Saving TO-252, SOT-223, TO-263
and TO-220 Package
l Low Temperature Coefficient
IN
SENSE
EN
AME8845 OUT
GND
0.1µF
2.2µF
n Applications
l Instrumentation
l Portable Electronics
l Wireless Devices
l PC Peripherals
l Battery Powered Widgets
1
AME, Inc.
AME8845
3A CMOS LDO
n Pin Configuration
TO-252-2
Top View
TO-252-2
Top View
AME8845
1
2
AME 8845AECSxxx
1. VIN
2. GND (heat sink)
3. VOUT
AME8845
3
1
SOT-223
Top View
2
3
SOT-223
Top View
AME8845
1
2
AME8845AEGTxxx
1. VIN
2. GND
3. VOUT
3
AME8845
1
TO-220
Top View
2
AMExxxx
AME8845
2
2
3
AME8845BEGTxxx
1. GND
2. VOUT
3. VIN
3
TO-220
Top View
AME 8845AEBTxxx
1. VIN
1
AME 8845BECSxxx
1. GND
2. VOUT (heat sink)
3. VIN
2. GND (heat sink)
3. VOUT
AMExxxx
AME8845
1
2
3
AME 8845BEBTxxx
1. GND
2. VOUT (heat sink)
3. VIN
AME, Inc.
3A CMOS LDO
AME8845
n Pin Configuration
TO-263-3L
Top View
TO-263-3L
Top View
AME 8845AEDTxxx
1. VIN
AME8845
1
2
2. GND (heat sink)
3. VOUT
3
AME8845
1
2
AME 8845BEDTxxx
1. GND (heat sink)
2. VOUT
3. VIN
3
TO-263-5L
Top View
AME8845
1
AME 8845AEDVxxx
1. VIN
2. EN
3. GND (heat sink)
4. SENSE
5. VOUT
2 3 4 5
3
AME, Inc.
AME8845
3A CMOS LDO
n Ordering Information
AME8845 x x x x xxx x
Special Feature
Voltage
Number of Pin
Package
Operating Temperature
Pin Configuration
Pin Configuration
Pin
Configuration
A:
1. VIN
(TO-252) 2. GND
3. VOUT
B:
1. GND
2. VOUT
3. VIN
A:
1. VIN
(TO-263-3) 2. GND
3. VOUT
B:
1. GND
2. VOUT
3. VIN
A:
1. VIN
(TO-263-5) 2. EN
3. GND
4. SENSE
5. VOUT
A:
1. VIN
(TO-220) 2. GND
3. VOUT
B:
1. GND
2. VOUT
3. VIN
A:
1. VIN
(SOT-223) 2. GND
3. VOUT
B:
1. VIN
(SOT-223) 2. GND
3. VOUT
4
Operating
Temperature
Range
E: -40OC to 85OC
Package Type
B:
C:
D:
G:
TO-220
TO-252
TO-263
SOT-223
Number
of
Pins
S: 2
T: 3
V: 5
Voltage
150:
180:
250:
330:
V=1.5V
V=1.8V
V=2.5V
V=3.3V
Special Feature
Z: Lead Free
AME, Inc.
AME8845
3A CMOS LDO
n Ordering Information
Part Number
AME8845AEBT150
AME8845AEBT150Z
AME8845BEBT150
AME8845BEBT150Z
AME8845AEDT150
AME8845AEDT150Z
AME8845BEDT150
AME8845BEDT150Z
AME8845AEDV150
AME8845AEDV150Z
AME8845AEBT180
AME8845AEBT180Z
AME8845BEBT180
Marking*
AME8845
AEBT150
yyww
AME8845
AEBT150
yyww
AME8845
BEBT150
yyww
AME8845
BEBT150
yyww
AME8845
AEDT150
yyww
AME8845
AEDT150
yyww
AME8845
BEDT150
yyww
AME8845
BEDT150
yyww
AME8845
AEDV150
yyww
AME8845
AEDV150
yyww
AME8845
AEBT180
yyww
AME8845
AEBT180
yyww
AME8845
BEBT180
yyww
Output Voltage
Package
Operating Temp. Range
1.50
TO-220
- 40oC to + 85oC
1.50
TO-220
- 40oC to + 85oC
1.50
TO-220
- 40oC to + 85oC
1.50
TO-220
- 40oC to + 85oC
1.50
TO-263-3
- 40oC to + 85oC
1.50
TO-263-3
- 40oC to + 85oC
1.50
TO-263-3
- 40oC to + 85oC
1.50
TO-263-3
- 40oC to + 85oC
1.50
TO-263-5
- 40oC to + 85oC
1.50
TO-263-5
- 40oC to + 85oC
1.80
TO-220
- 40oC to + 85oC
1.80
TO-220
- 40oC to + 85oC
1.80
TO-220
- 40oC to + 85oC
Note: yyww/ yww represents the date code
* A line on top of the first letter represents lead free plating such as AME8845
Please consult AME sales office or authorized Rep./Distributor for output voltage and package type availability.
5
AME, Inc.
AME8845
3A CMOS LDO
n Ordering Information
Part Number
AME8845BEBT180Z
AME8845AEDT180
AME8845AEDT180Z
AME8845BEDT180
AME8845BEDT180Z
AME8845AEDV180
AME8845AEDV180Z
AME8845
BEBT180
yyww
AME8845
AEDT180
yyww
AME8845
AEDT180
yyww
AME8845
BEDT180
yyww
AME8845
BEDT180
yyww
AME8845
AEDV180
yyww
AME8845
AEDV180
yyww
Output Voltage
Package
Operating Temp. Range
1.80
TO-220
- 40oC to + 85oC
1.80
TO-263-3
- 40oC to + 85oC
1.80
TO-263-3
- 40oC to + 85oC
1.80
TO-263-3
- 40oC to + 85oC
1.80
TO-263-3
- 40oC to + 85oC
1.80
TO-263-5
- 40oC to + 85oC
1.80
TO-263-5
- 40oC to + 85oC
AME8845AEGT180
BAZyww
1.80
SOT-223
- 40oC to + 85oC
AME8845AEGT180Z
BAZyww
1.80
SOT-223
- 40oC to + 85oC
2.50
TO-220
- 40oC to + 85oC
2.50
TO-220
- 40oC to + 85oC
2.50
TO-220
- 40oC to + 85oC
2.50
TO-220
- 40oC to + 85oC
2.50
TO-263-3
- 40oC to + 85oC
2.50
TO-263-3
- 40oC to + 85oC
AME8845AEBT250
AME8845AEBT250Z
AME8845BEBT250
AME8845BEBT250Z
AME8845AEDT250
AME8845AEDT250Z
6
Marking*
AME8845
AEBT250
yyww
AME8845
AEBT250
yyww
AME8845
BEBT250
yyww
AME8845
BEBT250
yyww
AME8845
AEDT250
yyww
AME8845
AEDT250
yyww
AME, Inc.
AME8845
3A CMOS LDO
n Ordering Information
Part Number
AME8845BEDT250
AME8845BEDT250Z
AME8845AEDV250
AME8845AEDV250Z
Marking*
AME8845
BEDT250
yyww
AME8845
BEDT250
yyww
AME8845
AEDV250
yyww
AME8845
AEDV250
yyww
Output Voltage
Package
Operating Temp. Range
2.50
TO-263-3
- 40oC to + 85oC
2.50
TO-263-3
- 40oC to + 85oC
2.50
TO-263-5
- 40oC to + 85oC
2.50
TO-263-5
- 40oC to + 85oC
AME8845AEGT250
AZSyww
2.50
SOT-223
- 40oC to + 85oC
AME8845AEGT250Z
AZSyww
2.50
SOT-223
- 40oC to + 85oC
3.30
TO-220
- 40oC to + 85oC
3.30
TO-220
- 40oC to + 85oC
3.30
TO-220
- 40oC to + 85oC
3.30
TO-220
- 40oC to + 85oC
3.30
TO-263-3
- 40oC to + 85oC
3.30
TO-263-3
- 40oC to + 85oC
3.30
TO-263-3
- 40oC to + 85oC
3.30
TO-263-3
- 40oC to + 85oC
3.30
TO-263-5
- 40oC to + 85oC
3.30
TO-263-5
- 40oC to + 85oC
AME8845AEBT330
AME8845AEBT330Z
AME8845BEBT330
AME8845BEBT330Z
AME8845AEDT330
AME8845AEDT330Z
AME8845BEDT330
AME8845BEDT330Z
AME8845AEDV330Z
AME8845AEDV330Z
AME8845
AEBT330
yyww
AME8845
AEBT330
yyww
AME8845
BEBT330
yyww
AME8845
BEBT330
yyww
AME8845
AEDT330
yyww
AME8845
AEDT330
yyww
AME8845
BEDT330
yyww
AME8845
BEDT150
yyww
AME8845
AEDV330
yyww
AME8845
AEDV330
yyww
7
AME, Inc.
AME8845
3A CMOS LDO
n Absolute Maximum Ratings
Parameter
Maximum
Unit
7
V
Output Current
PD / (V IN - VO)
mA
Output Voltage
GND - 0.3 to VIN + 0.3
V
Input Voltage
ESD Classification
B
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device
n Recommended Operating Conditions
Parameter
Ambient Temperature Range
Junction Temperature
8
Rating
Unit
- 40 to + 85
o
C
- 40 to + 125
o
C
AME, Inc.
AME8845
3A CMOS LDO
n Thermal Information
Parameter
Maximum
TO-252
90
TO-263
60
Unit
o
Thermal Resistance (θja)
C/W
TO-220
50
SOT-223
160
Conductive
7
Non-Conductive
30
Conductive
7
Non-Conductive
27
TO-252
TO-263
o
Thermal Resistance (θjc)
C/W
Conductive
7
Non-Conductive
24
Conductive
7
Non-Conductive
31
TO-220
SOT-223
Internal Power Dissipation (P D )
(∆T = 100oC)
TO-252
1200
TO-263
2800
TO-220
3000
SOT-223
625
mW
Maximum Junction Temperature
150
o
Maximum Lead Temperature (10 Sec)
300
o
C
C
9
AME, Inc.
AME8845
3A CMOS LDO
n Electrical Specifications
VIN = VO(Nom) +1V, CIN=0.1µF, COUT=2.2µF, TA = 25OC unless otherwise noted
Parameter
Input Voltage
VIN
Output Voltage Accuracy
VO
Dropout Voltage
Test Condition
Symbol
VDROPOUT
Min
IO=1mA
IO=3A
VO=VO(NOM) -2.0%
Units
Note 1
6
V
-1.5
1.5
%
1.5V<=VO(NOM) <=1.8V
1200
1.8V<VO(NOM) <2.5V
700
2.5V<=VO(NOM)
Output Current
Typ Max
300
mV
450
IO
VO>1.2V
3000
mA
Current Limit
ILIM
VO>1.2V
3
A
Short Circuit Current
ISC
VIN = VO(NOM) +1V, VO<0.4V
1.7
A
Quiescent Current
IQ
IO=0mA
200
Ground Pin Current
IGND
IO=1mA to 3A
300
Line Regulation
REGLINE
IO=1mA, VIN =VO+1 to VO+2
-0.2
Load Regulation
REGLOAD
IO=1mA to 3A
-1
0.1
350
µA
µA
0.2
%
1
%
Over Temperature Shutdown
OTS
140
o
Over Temperature Hysterisis
OTH
30
o
TC
30
VO Temperature Coefficient
Power Supply Rejection
Output Voltage Noise
EN Input Threshold
EN Input Leakage
Shutdown Current
Note1:VIN(min) =VOUT+VDROPOUT
10
PSRR
eN
VEH
VEL
IO=100mA
f=100Hz
70
CO=10µF
f=1kHz
50
f=10Hz to 100kHz
IO=10mA
Co=2.2µF
30
C
C
ppm/oC
dB
VIN =VIN ,MIN to VIN ,
MAX
µVrms
VIN *0.8
VIN
0
0.4
IEH
VEN =VIN =5V
2
IEL
VEN =0V, VIN =5V
2
ISD
VEN =0V, VIN =5V
10
V
µA
µA
AME, Inc.
AME8845
3A CMOS LDO
n Detailed Description
n External Capacitors
The AME8845 family of CMOS regulators contain a
PMOS pass transistor, voltage reference, error amplifier,
over-current protection, and thermal shutdown.
The AME8845 is stable with an output capacitor to
ground of 2.2µF or greater. Ceramic capacitors have the
lowest ESR, and will offer the best AC performance. Conversely, Aluminum Electrolytic capacitors exhibit the highest ESR, resulting in the poorest AC response. Unfortunately, large value ceramic capacitors are comparatively
expensive. One option is to parallel a 0.1µF ceramic
capacitor with a 10µF Aluminum Electrolytic. The benefit
is low ESR, high capacitance, and low overall cost.
The P-channel pass transistor receives data from the
error amplifier, over-current shutdown, and thermal protection circuits. During normal operation, the error amplifier compares the output voltage to a precision reference.
Over-current and Thermal shutdown circuits become active when the junction temperature exceeds 140oC, or
the current exceeds 4.5A. During thermal shutdown, the
output voltage remains low. Normal operation is restored
when the junction temperature drops below 110oC.
The AME8845 behaves like a current source when the
load reaches 4.5A. However, if the load impedance drops
below 0.3 ohms, the current drops back to 600mA to
prevent excessive power dissipation. Normal operation
is restored when the load resistance exceeds 0.75 ohms.
A second capacitor is recommended between the input and ground to stabilize Vin. The input capacitor should
be at least 0.1µF to have a beneficial effect.
All capacitors should be placed in close proximity to
the pins. A "Quiet" ground termination is desirable. This
can be achieved with a "Star" connection.
11
AME, Inc.
AME8845
3A CMOS LDO
Dropout Voltage vs. Load Current
Temperature Stability
450
2.6
VOUT=2.5V
400
Dropout V oltage (m V)
Output V oiltage (V)
2.56
2.52
2.48
2.44
350
300
125oC
250
85oC
200
55oC
150
25oC
100
-5oC
-45oC
50
2.4
-45 -35 -25 -15 -5
0
5 15 25 35 45 55 65 75 85 95 105115125
0.0
Temperature (oC)
Quiescent Current vs.Temperature
2.0
2.5
3.0
Dropout Voltage vs. Temperature
Dropout Voltage @ 3A (m V)
Quiescent Current @ 5V (uA)
1.5
450
350
330
310
290
270
250
-45 -35 -25 -15 -5 5 15 25 35 45 55 65 75 85 95 105 115 125
400
300
250
200
150
-45 -35 -25 -15 -5 5 15 25 35 45 55 65 75 85 95 105115125
Temperature (o C)
Current Limit vs. Temperature
Quiescent Current vs. Supply Voltage
9.0
450
8.0
400
125oC
7.0
350
Curr ent Lim it (A)
85oC
300
55oC
-45oC
250
-5oC
200
25oC
150
6.0
5.0
4.0
3.0
2.0
100
1.0
50
0
0.0
VOUT =2.5V
350
Temperature (oC)
Quiescent Current (uA)
1.0
Load Current (A)
370
1.0
2.0
3.0
4.0
Supply Voltage (V)
12
0.5
5.0
6.0
0.0
-40-30 -20 -10 0 10 20 25 30 40 50 60 70 80 90100 110 125
Temperature(oC)
AME, Inc.
AME8845
3A CMOS LDO
Output Voltage(2.5V) vs. Input Voltage
Output Noise vs. Frequency
3.0
25
20
Output Noise (uV)
O utput V oltage (V)
2.5
2.0
55 oC
85 C
o
1.5
125 oC
1.0
-45C
0.0
0
1
VIL=100mA
VOUT=3.3V
15
10
5
-45 oC
-5 oC
25 oC
0.5
VIN=5V
CL=10µF
2
3
4
5
0
10
6
100
1000
Input Voltage (V)
PSRR vs. Frequency
-30
300
PSRR (dB)
-40
-50
-60
VIN=5V
ILOAD=100mA
C L=10µF VOUT=3.3V
1.0E+02
1.0E+03
1.0E+04
1.0E+05
1.0E+06
Frequency (Hz)
G round Current (mA)
350
-80
1.0E+01
100000
Ground Current vs. Load Current
-20
-70
10000
Frequency (HZ)
IQ(uA)
250
200
150
100
50
0
0.0
Vout = 3.3V
Cin= 0.1 μF(ceramic)
Cout= 2.2 μF(ceramic)
Vin= Vo+1.0V
0.5
1.0
1.5
2.0
2.5
3.0
Load Current (A)
Load Regulation Deviation
O utput Voltage Deviation (% )
0.16
0.14
0.12
0.10
V OUT =2.5V
CIN=3.3µF (Ceramic)
COUT=3.3µF (Ceramic)
∆IL=3A
0.08
0.06
0.04
0.02
0.00
-0.02
-0.04
-0.06
-40-30 -20 -10 0 10 20 25 30 40 50 60 70 80 90100 110 125
Temperature(oC)
13
AME, Inc.
AME8845
3A CMOS LDO
Input
Voltage(V)
Output Voltage
Deviation(mV)
Line Transient Response
Cin= 0
Cout= 4.7 μF(ceramic)
100 Vout = 3.3V Vin= 5.3V~4.3V
TA =25oC
ILOAD =1mA
50
0
5.3
4.3
Time (20μS/DIV)
Load
Current(A)
Output Voltage
Deviation(mV)
Load Transient Response
Cin= 0.1 μF(ceramic)
Cout= 10uF(Tantalum)
100 Vout = 3.3V Vin= 5.3V~4.3V
TA =25oC
ILOAD:100mA--->3A
50
0
3
0.1
Time (500μS/DIV)
14
Li
AME, Inc.
AME8845
3A CMOS LDO
n Package Dimension
TO-263-3
Side View
Top View
A
SYMBOLS
B
H
P
G
D
N
MIN
MAX
A
9.65
10.42
0.380
0.410
B
8.28
9.66
0.326
0.380
C
4.06
4.83
0.160
0.190
D
0.50
1.02
0.020
0.040
E
1.14
1.40
0.045
0.055
G
*
H
14.60
15.60
K
0.99
2.93
P
R
INCHES
MAX
N
Front View
MILLIMETERS
MIN
K
E
R
*
2.54
0.100
0.381REF
2.28
0
8
0.61417
0.03898 0.11535
0.015REF
2.80
o
0.5748
o
0.08976 0.11024
0o
8o
C
TO-263-5
Top View
Side View
SYMBOLS
A
B
K
E
H
P
W
D
G
Front View
N
R
A
B
C
D
E
G
H
K
L
N
P
R
W
MILLIMETERS
INCHES
MIN
MAX
MIN
MAX
10.050
10.668
0.396
0.420
8.280
9.169
0.326
0.361
4.310
4.597
0.170
0.181
0.660
0.910
0.026
0.036
1.140
1.400
0.045
0.055
1.70REF
0.067 REF
14.605
15.875
0.575
0.625
1.143
1.680
0.045
0.066
0.000
0.305
0.000
0.012
0.330
0.580
0.013
0.023
2.280
2.800
0.090
0.110
0o
8o
0.25REF
0o
8o
0.01REF
C
15
AME, Inc.
AME8845
3A CMOS LDO
n Package Dimension
TO-252(DPAK)-EIAJ
SYMBOLS
E
B
K
A
L
F
G
C
MIN
MAX
MIN
MAX
0.45
0.58
0.0177
0.0230
B
1.60
1.95
0.0630
0.0768
C
0.51
1.50
0.0201
0.0591
D
0.45
0.60
0.0177
0.0236
E
F
6.40
6.80
0.2520
0.2677
5.40
7.20
0.2126
0.2835
G
2.20
2.85
0.0866
0.1122
H
-
* 2.30
-
* 0.0906
J
-
0.97
-
0.0380
K
5.20
5.50
0.2047
0.2165
1.40REF
L
J
D
H
INCHES
A
Side View
Top View
MILLIMETERS
0.055REF
*: Typical Value
Notes:
1. Controlling dimension: Millimeters.
2. Maximum lead thickness includes lead finish thickness Minimum lead thickness is the minimum thickness of base material.
SOT-223
Top View
Side View
D
B1
SYMBOLS
θ
C
13o(4X)
H
E
e
Front View
13o(4X)
MILLIMETERS
MIN
MAX
MIN
MAX
A1
0.02
0.10
0.0008
0.0039
B
0.60
0.84
0.0236
0.0330
B1
2.90
3.15
0.1140
0.1240
C
0.24
0.38
0.0094
0.0150
D
6.30
6.71
0.2480
0.2640
E
3.30
3.71
0.1299
0.1460
2.30 BSC
e
H
6.70
F
A1
16
B
INCHES
o
?
0
F
1.40
0.0906 BSC
7.30
10
o
1.80
0.2638
0
o
0.0560
0.2874
10o
0.0702
AME, Inc.
AME8845
3A CMOS LDO
n Package Dimension
TO-220
Top View
SYMBOLS
O
M
I
N
G
K
P
Side View
C
D
E
A
MILLIMETERS
INCHES
MIN
MAX
MIN
MAX
A
5.58
7.49
0.2197
0.2949
C
3.55
4.83
0.1398
0.1900
D
0.50
1.40
0.0197
0.0550
E
0.30
1.15
0.0118
0.0453
G
9.65
10.67
0.3799
0.4200
I
3.53
4.09
0.1390
0.1610
K
0.50
1.15
0.0197
0.0453
M
1.14
1.78
0.0449
0.0700
N
2.28
2.80
0.0898
0.1102
O
12.70
14.74
0.5000
0.5803
P
14.22
16.51
0.5600
0.6500
17
Life Support Policy:
These products of AME, Inc. are not authorized for use as critical components in life-support
devices or systems, without the express written approval of the president
of AME, Inc.
AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and
advises its customers to obtain the latest version of relevant information.
 AME, Inc. , September 2003
Document: 2006-DS8803/8814-G
E-Mail:[email protected]
Address:Room 2101, No.2 Building Yulan garden, No.50 Puhuitang Rd,Shanghai,PRC
zip:200030
Tel : 86-21-64285731/32 ext:8033
Fax: 86-21-64393342
Sales Manager:Longman Xu
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