概述
数据手册AME8845AECV180Z 概述
3A CMOS LDO 3A CMOS LDO
AME8845AECV180Z 数据手册
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PDF下载AME, Inc.
3A CMOS LDO
AME8845
n General Description
n Functional Block Diagram
The AME8845 family of linear regulators feature low
quiescent current (100mA 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.
OUT
IN
Overcurrent
Shutdown
Thermal
Shutdown
Output voltages are set at the factory and trimmed to
1.5% accuracy.
EN
R1
R2
-
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
2.2mF or greater.
V
ref
GND
n Features
l Very Low Dropout Voltage
l Guaranteed 3A Output
l Accurate to within 1.5%
l 100mA Quiescent Current Typically
l Over-Temperature Shutdown
l Current Limiting
n Typical Application
VIN
SENSE
IN
l Short Circuit Current Fold-back
l Space-Saving TO-252, SOT-223, TO-263
and TO-220 Package
AME8845 OUT
EN
GND
0.1mF
2.2mF
l Low Temperature Coefficient
n Applications
l Instrumentation
l Portable Electronics
l Wireless Devices
l PC Peripherals
l Battery Powered Widgets
1
AME, Inc.
3A CMOS LDO
AME8845
¢ Pin Configuration
TO-252-2
Top View
TO-252-2
Top View
AME 8845AECSxxx
1. VIN
AME 8845BECSxxx
1. GND
AME8845
AME8845
2. GND (heat sink)
3. VOUT
2. VOUT (heat sink)
3. VIN
2
2
3
3
1
1
SOT-223
Top View
SOT-223
Top View
AME8845AEGTxxx
1. VIN
AME8845BEGTxxx
1. GND
2. GND
2. VOUT
AME8845
AME8845
3. VOUT
3. VIN
1
2
3
1
2
3
TO-220
Top View
TO-220
Top View
AME 8845AEBTxxx
1. VIN
AME 8845BEBTxxx
1. GND
2. GND (heat sink)
3. VOUT
2. VOUT (heat sink)
3. VIN
AME8845
AME8845
1
2
3
1
2
3
2
AME, Inc.
3A CMOS LDO
AME8845
¢ Pin Configuration
TO-263-3L
Top View
TO-263-3L
Top View
AME 8845AEDTxxx
1. VIN
AME 8845BEDTxxx
1. GND (heat sink)
2. VOUT
2. GND (heat sink)
3. VOUT
AME8845
AME8845
3. VIN
2
3
2
3
1
1
TO-263-5L
Top View
AME 8845AEDVxxx
1. VIN
2. EN
AME8845
3. GND (heat sink)
4. SENSE
5. VOUT
1
2 3 4 5
3
AME, Inc.
3A CMOS LDO
AME8845
n Ordering Information
AME8845 x x x x xxx x
Special Feature
Voltage
Number of Pin
Package
Operating Temperature
Pin Configuration
Operating
Temperature
Range
Number
of
Pins
Pin
Package Type
Voltage
Special Feature
Configuration
-40OC to 85OC
A:
B:
C:
D:
1. VIN
2. GND
3. VOUT
E:
TO-220
TO-252
TO-263
S: 2
T: 3
V: 5
150: V=1.5V
180: V=1.8V
250: V=2.5V
Z: Lead Free
(TO-252)
G: SOT-223
330: V=3.3V
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
AME, Inc.
3A CMOS LDO
AME8845
n Ordering Information
Part Number
Marking*
Output Voltage Package Operating Temp. Range
AME8845
AEBT150
yyww
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
AME8845AEBT150
1.50
1.50
1.50
1.50
1.50
1.50
1.50
1.50
1.50
1.50
1.80
1.80
1.80
TO-220
TO-220
AME8845
AEBT150
yyww
AME8845AEBT150Z
AME8845BEBT150
AME8845BEBT150Z
AME8845AEDT150
AME8845AEDT150Z
AME8845BEDT150
AME8845BEDT150Z
AME8845AEDV150
AME8845AEDV150Z
AME8845AEBT180
AME8845AEBT180Z
AME8845BEBT180
AME8845
BEBT150
yyww
TO-220
AME8845
BEBT150
yyww
TO-220
AME8845
AEDT150
yyww
TO-263-3
TO-263-3
TO-263-3
TO-263-3
TO-263-5
TO-263-5
TO-220
AME8845
AEDT150
yyww
AME8845
BEDT150
yyww
AME8845
BEDT150
yyww
AME8845
AEDV150
yyww
AME8845
AEDV150
yyww
AME8845
AEBT180
yyww
AME8845
AEBT180
yyww
TO-220
AME8845
BEBT180
yyww
TO-220
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.
3A CMOS LDO
AME8845
n Ordering Information
Part Number
Marking*
Output Voltage Package Operating Temp. Range
AME8845
BEBT180
yyww
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
AME8845BEBT180Z
1.80
1.80
1.80
1.80
1.80
1.80
1.80
TO-220
TO-263-3
TO-263-3
TO-263-3
TO-263-3
TO-263-5
TO-263-5
AME8845
AEDT180
yyww
AME8845AEDT180
AME8845AEDT180Z
AME8845BEDT180
AME8845BEDT180Z
AME8845AEDV180
AME8845AEDV180Z
AME8845
AEDT180
yyww
AME8845
BEDT180
yyww
AME8845
BEDT180
yyww
AME8845
AEDV180
yyww
AME8845
AEDV180
yyww
- 40oC to + 85oC
- 40oC to + 85oC
AME8845AEGT180
AME8845AEGT180Z
BAZyww
BAZyww
1.80
1.80
SOT-223
SOT-223
AME8845
AEBT250
yyww
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
AME8845AEBT250
AME8845AEBT250Z
AME8845BEBT250
AME8845BEBT250Z
AME8845AEDT250
AME8845AEDT250Z
2.50
2.50
2.50
2.50
2.50
2.50
TO-220
TO-220
AME8845
AEBT250
yyww
AME8845
BEBT250
yyww
TO-220
AME8845
BEBT250
yyww
TO-220
AME8845
AEDT250
yyww
TO-263-3
TO-263-3
AME8845
AEDT250
yyww
6
AME, Inc.
3A CMOS LDO
AME8845
n Ordering Information
Part Number
Marking*
Output Voltage Package Operating Temp. Range
AME8845
BEDT250
yyww
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
AME8845BEDT250
2.50
2.50
2.50
2.50
TO-263-3
TO-263-3
TO-263-5
TO-263-5
AME8845
BEDT250
yyww
AME8845
AEDV250
yyww
AME8845BEDT250Z
AME8845AEDV250
AME8845AEDV250Z
AME8845
AEDV250
yyww
- 40oC to + 85oC
- 40oC to + 85oC
AME8845AEGT250
AME8845AEGT250Z
AZSyww
AZSyww
2.50
2.50
SOT-223
SOT-223
AME8845
AEBT330
yyww
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
AME8845AEBT330
AME8845AEBT330Z
AME8845BEBT330
AME8845BEBT330Z
AME8845AEDT330
AME8845AEDT330Z
AME8845BEDT330
AME8845BEDT330Z
AME8845AEDV330Z
AME8845AEDV330Z
3.30
3.30
3.30
3.30
3.30
3.30
3.30
3.30
3.30
3.30
TO-220
TO-220
AME8845
AEBT330
yyww
AME8845
BEBT330
yyww
TO-220
AME8845
BEBT330
yyww
AME8845
AEDT330
yyww
TO-220
TO-263-3
TO-263-3
TO-263-3
TO-263-3
TO-263-5
TO-263-5
AME8845
AEDT330
yyww
AME8845
BEDT330
yyww
AME8845
BEDT150
yyww
AME8845
AEDV330
yyww
AME8845
AEDV330
yyww
7
AME, Inc.
3A CMOS LDO
AME8845
n Absolute Maximum Ratings
Parameter
Input Voltage
Maximum
Unit
7
PD / (VIN - VO)
GND - 0.3 to VIN + 0.3
B
V
mA
V
Output Current
Output Voltage
ESD Classification
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
Rating
- 40 to + 85
- 40 to + 125
Unit
oC
oC
8
AME, Inc.
3A CMOS LDO
AME8845
n Thermal Information
Parameter
Maximum
Unit
TO-252
TO-263
TO-220
SOT-223
90
60
oC / W
Thermal Resistance (qja)
50
160
Conductive
7
30
7
TO-252
TO-263
TO-220
SOT-223
Non-Conductive
Conductive
Non-Conductive
Conductive
27
7
oC / W
Thermal Resistance (qjc)
Non-Conductive
Conductive
24
7
Non-Conductive
31
TO-252
TO-263
TO-220
SOT-223
1200
2800
3000
625
Internal Power Dissipation (PD)
(DT = 100oC)
mW
oC
oC
Maximum Junction Temperature
150
Maximum Lead Temperature (10 Sec)
300
9
AME, Inc.
3A CMOS LDO
AME8845
n Electrical Specifications
VIN = VO(Nom) +1V, C =0.1mF, COUT=2.2mF, TA = 25OC unless otherwise noted
IN
Test Condition
Parameter
Input Voltage
Symbol
VIN
Min
Note 1
-1.5
Typ Max Units
6
V
Output Voltage Accuracy
VO
IO=1mA
1.5
%
1.5V<=VO(NOM)<=1.8V
1200
IO=3A
Dropout Voltage
VDROPOUT
1.8V<VO(NOM)<2.5V
2.5V<=VO(NOM)
700
mV
VO=VO(NOM) -2.0%
300 450
Output Current
IO
ILIM
VO>1.2V
3000
mA
A
Current Limit
VO>1.2V
VIN= VO(NOM)+1V, VO<0.4V
IO=0mA
3
Short Circuit Current
Quiescent Current
ISC
1.7
A
IQ
200 350
mA
Ground Pin Current
Line Regulation
IGND
IO=1mA to 3A
300
mA
REGLINE
REGLOAD
OTS
OTH
TC
IO=1mA, VIN=VO+1 to VO+2
IO=1mA to 3A
-0.2
-1
0.1 0.2
%
Load Regulation
1
140
30
%
oC
Over Temperature Shutdown
Over Temperature Hysterisis
VO Temperature Coefficient
oC
ppm/oC
30
f=100Hz
f=1kHz
70
IO=100mA
Power Supply Rejection
Output Voltage Noise
PSRR
eN
dB
CO=10mF
50
f=10Hz to 100kHz
IO=10mA
Co=2.2mF
30
mVrms
VEH
VEL
IEH
VIN*0.8
0
VIN
0.4
2
EN Input Threshold
EN Input Leakage
VIN=VIN,MIN to VIN,
V
MAX
VEN=VIN=5V
mA
mA
IEL
VEN=0V, VIN=5V
VEN=0V, VIN=5V
2
Shutdown Current
ISD
10
Note1:VIN(min)=VOUT+VDROPOUT
10
AME, Inc.
3A CMOS LDO
AME8845
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 2.2mF or greater. Ceramic capacitors have the
lowest ESR, and will offer the best AC performance. Con-
versely, Aluminum Electrolytic capacitors exhibit the high-
est ESR, resulting in the poorest AC response. Unfortu-
nately, large value ceramic capacitors are comparatively
expensive. One option is to parallel a 0.1mF ceramic
capacitor with a 10mF 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 pro-
tection circuits. During normal operation, the error ampli-
fier compares the output voltage to a precision reference.
Over-current and Thermal shutdown circuits become ac-
tive 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.
A second capacitor is recommended between the in-
put and ground to stabilize Vin. The input capacitor should
be at least 0.1mF to have a beneficial effect.
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.
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.
3A CMOS LDO
AME8845
Dropout Voltage vs. Load Current
Temperature Stability
450
400
350
300
250
200
150
100
50
2.6
2.56
2.52
2.48
2.44
2.4
VOUT=2.5V
125oC
85oC
55oC
25oC
-5oC
-45oC
0
-45 -35 -25-15 -5
5
15 25 35 45 55 65 75 85 95 105115125
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Temperature (oC)
Load Current (A)
Quiescent Current vs.Temperature
Dropout Voltage vs. Temperature
370
350
330
310
290
270
250
450
400
350
300
VOUT=2.5V
250
200
150
-45 -35 -25 -15 -5
5
15 25 35 45 55 65 75 85 95 105115125
-45 -35 -25-15 -5
5
15 25 35 45 55 65 75 85 95 105 115125
Temperature (oC)
Temperature (oC)
Current Limit vs. Temperature
Quiescent Current vs. Supply Voltage
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
450
400
125oC
350
300
250
85oC
55oC
-45oC
-5oC
200
150
100
25oC
50
0
-40-30 -20 -10
0
10 20 25 30 40 50 60 70 80 90100 110125
0.0
1.0
2.0
3.0
4.0
5.0
6.0
Temperature(oC)
Supply Voltage (V)
12
AME, Inc.
3A CMOS LDO
AME8845
Output Voltage(2.5V) vs. Input Voltage
Output Noise vs. Frequency
3.0
2.5
2.0
25
20
15
10
5
VIN=5V
CL=10mF VOUT=3.3V
VIL=100mA
55oC
85 oC
125 oC
1.5
1.0
0.5
0.0
-45 oC
-5oC
25 oC
0
10
100
1000
10000
100000
0
1
2
3
4
5
6
Input Voltage (V)
Frequency (HZ)
PSRR vs. Frequency
Ground Current vs. Load Current
-20
350
300
IQ(uA)
-30
250
200
150
100
-40
-50
-60
-70
-80
Vout = 3.3V
Cin= 0.1 μF(ceramic)
Cout= 2.2 μF(ceramic)
Vin= Vo+1.0V
VIN=5V
CL=10mF VOUT=3.3V
ILOAD=100mA
50
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
1.0E+01
1.0E+02
1.0E+03
1.0E+04
1.0E+05
1.0E+06
Frequency (Hz)
Load Current (A)
Load Regulation Deviation
0.16
0.14
VOUT=2.5V
CIN=3.3mF (Ceramic)
COUT=3.3mF (Ceramic)
DIL=3A
0.12
0.10
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 110125
Temperature(oC)
13
AME, Inc.
3A CMOS LDO
AME8845
Li
Line Transient Response
Cin= 0
Cout= 4.7 μF(ceramic)
100 Vout = 3.3V Vin= 5.3V~4.3V
o
TA =25 C
ILOAD =1mA
50
0
5.3
4.3
Time (20μS/DIV)
Load Transient Response
Cin= 0.1 μF(ceramic) Cout= 10uF(Tantalum)
100 Vout = 3.3V Vin= 5.3V~4.3V
o
TA =25 C
ILOAD:100mA--->3A
50
0
3
0.1
Time (500μS/DIV)
14
AME, Inc.
3A CMOS LDO
AME8845
n Package Dimension
TO-263-3
Side View
Top View
MILLIMETERS
INCHES
SYMBOLS
A
E
MIN
9.65
8.28
4.06
0.50
1.14
MAX
10.42
9.66
4.83
1.02
1.40
MIN
0.380
0.326
0.160
0.020
0.045
MAX
0.410
0.380
0.190
0.040
0.055
A
B
C
D
E
G
H
K
N
P
R
H
*2.54
*0.100
P
14.60
0.99
15.60
2.93
0.5748 0.61417
0.03898 0.11535
0.015REF
G
D
N
0.381REF
Front View
R
2.28
0o
2.80
8o
0.08976 0.11024
0o
8o
C
TO-263-5
Top View
Side View
MILLIMETERS
INCHES
SYMBOLS
A
MIN
10.050
8.280
4.310
0.660
1.140
MAX
10.668
9.169
4.597
0.910
1.400
MIN
0.396
0.326
0.170
0.026
0.045
MAX
0.420
0.361
0.181
0.036
0.055
E
A
B
C
D
E
H
1.70REF
0.067 REF
G
H
K
L
14.605
1.143
0.000
0.330
2.280
0o
15.875
1.680
0.305
0.580
2.800
8o
0.575
0.045
0.000
0.013
0.090
0o
0.625
0.066
0.012
0.023
0.110
8o
P
W
N
P
D
G
N
R
Front View
R
W
0.25REF
0.01REF
C
15
AME, Inc.
3A CMOS LDO
AME8845
n Package Dimension
TO-252(DPAK)-EIAJ
MILLIMETERS
INCHES
SYMBOLS
Side View
MIN
0.45
1.60
0.51
0.45
6.40
5.40
2.20
-
MAX
0.58
1.95
1.50
0.60
6.80
7.20
2.85
* 2.30
0.97
5.50
MIN
0.0177
0.0630
0.0201
0.0177
0.2520
0.2126
0.0866
-
MAX
0.0230
0.0768
0.0591
0.0236
0.2677
0.2835
0.1122
* 0.0906
0.0380
0.2165
Top View
E
K
A
B
C
D
E
F
B
A
L
F
G
H
J
-
-
K
5.20
0.2047
G
C
1.40REF
0.055REF
L
*: Typical Value
Notes:
1. Controlling dimension: Millimeters.
J
D
H
2. Maximum lead thickness includes lead finish thickness Mini-
mum lead thickness is the minimum thickness of base material.
SOT-223
Top View
Side View
MILLIMETERS
INCHES
MIN MAX
D
B1
SYMBOLS
MIN
0.02
0.60
2.90
0.24
6.30
3.30
MAX
0.10
0.84
3.15
0.38
6.71
3.71
θ
C
A1
B
B1
C
D
E
0.0008 0.0039
0.0236 0.0330
0.1140 0.1240
0.0094 0.0150
0.2480 0.2640
0.1299 0.1460
0.0906 BSC
13o(4X)
H
E
e
2.30 BSC
e
Front View
13o(4X)
H
6.70
0o
7.30
10o
0.2638 0.2874
F
0o
10o
?
A1
B
F
1.40
1.80
0.0560
0.0702
16
AME, Inc.
3A CMOS LDO
AME8845
n Package Dimension
TO-220
Top View
MILLIMETERS
INCHES
SYMBOLS
O
MIN
5.58
3.55
0.50
0.30
9.65
3.53
0.50
1.14
2.28
12.70
14.22
MAX
7.49
4.83
1.40
1.15
10.67
4.09
1.15
1.78
2.80
14.74
16.51
MIN
MAX
A
C
D
E
G
I
0.2197 0.2949
0.1398 0.1900
0.0197 0.0550
0.0118 0.0453
0.3799 0.4200
0.1390 0.1610
0.0197 0.0453
0.0449 0.0700
0.0898 0.1102
0.5000 0.5803
0.5600 0.6500
M
I
N
G
K
P
Side View
K
M
N
O
D
C
E
A
P
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:Longman@rccn.com.cn
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
AME8845AECV180Z 相关器件
| 型号 | 制造商 | 描述 | 价格 | 文档 |
| AME8845AECV250Z | AME | 3A CMOS LDO | 获取价格 |
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| AME8845AECV330Z | AME | 3A CMOS LDO | 获取价格 |
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| AME8845AEDS150Z | AME | 3A CMOS LDO | 获取价格 |
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| AME8845AEDS180Z | AME | 3A CMOS LDO | 获取价格 |
|
| AME8845AEDS250Z | AME | 3A CMOS LDO | 获取价格 |
|
| AME8845AEDS330Z | AME | 3A CMOS LDO | 获取价格 |
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| AME8845AEDT150Z | AME | 3A CMOS LDO | 获取价格 |
|
| AME8845AEDT180Z | AME | 3A CMOS LDO | 获取价格 |
|
| AME8845AEDT250Z | AME | 3A CMOS LDO | 获取价格 |
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| AME8845AEDT330Z | AME | 3A CMOS LDO | 获取价格 |
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