AME8801FEEV [AME]
300mA CMOS LDO; 300毫安CMOS LDO
| 型号： | AME8801FEEV |
| 厂家： | 
ANALOG MICROELECTRONICS |
| 描述： | 300mA CMOS LDO |
| 文件： | 总14页 (文件大小：117K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Analog Microelectronics, Inc.
AME8801/8812/8840
300mA CMOS LDO
n General Description
n Features
The AME8801/8840 family of positive, linear regulators
feature low quiescent current (30µA typ.) with low drop-
out voltage, making them ideal for battery applications.
The space-saving SOT-23-5 package is attractive for
"Pocket" and "Hand Held" applications.
l Very Low Dropout Voltage
l Guaranteed 300mA Output
l Accurate to within 1.5%
l 30µA Quiescent Current
l Over-Temperature Shutdown
l Current Limiting
These rugged devices have both Thermal Shutdown,
and Current Fold-back to prevent device failure under
the "Worst" of operating conditions.
l Short Circuit Current Fold-back
l Noise Reduction Bypass Capacitor
l Power-Saving Shutdown Mode
l Space-Saving SOT-25 (SOT-23-5) Package
l Factory Pre-set Output Voltages
l Low Temperature Coefficient
In applications requiring a low noise, regulated supply,
place a 1000 pF capacitor between Bypass and Ground.
The AME8801 is stable with an output capacitance of
2.2µF or greater.
n Applications
l Instrumentation
l Portable Electronics
l Wireless Devices
l Cordless Phones
l PC Peripherals
n Functional Block Diagram
l Battery Powered Widgets
l Electronic Scales
IN
O U T
Overcurrent
Shutdown
n Typical Application
Thermal
Shutdown
OUTPUT
INPUT
EN
BYP
IN
OUT
AME8801
BYP
EN
GND
R1
R2
AMP
C2
C3
C1
5V
1nF
2.2µF
µ
1 F
Vref=1.215V
G N D
1
Analog Microelectronics, Inc.
300mA CMOS LDO
AME8801/8812/8840
n Pin Configuration
AME8801
AME8812
AME8840
AME8801
SOT-26 Top View
SOT-25 Top View
SOT-25 Top View
SOT-25 Top View
5
4
6
5
5
4
4
5
4
1
2
3
1
2
3
1
2
3
1
2
3
1. V
2. GND
3. EN
4. BYP
5. OUT
1. OUT 1 4. EN
1. EN
2. GND
3. VIN
4. OUT
5. BYP
1. EN
2. GND
3. BYP
4. OUT
IN
_
2. GND
3. BYP
5. VIN
6. OUT_2
5. V
IN
n Ordering Information
Part Number
AME8801AEEV
AME8801BEEV
AME8801CEEV
AME8801DEEV
AME8801EEEV
AME8801FEEV
AME8801GEEV
AME8801HEEV
AME8801IEEV
AME8801JEEV
AME8801KEEV
AME8801LEEV
AME8801MEEV
AME8801NEEV
AME8801OEEV
AME8801SEEV
AME8801JEEY
Marking
Output Voltage
Package
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-26
Operating Temp. Range
-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
-40OC to +85OC
-40OC to +85OC
-40OC to +85OC
-40OC to +85OC
AAFww
AAGww
AAHww
AAIww
3.3V
3.0V
2.8V
2.5V
3.8V
3.6V
3.5V
2.7V
3.4V
2.85V
3.7V
1.5V
1.8V
2.9V
3.1V
5.0V
2.85V
AAJww
ABOww
ACFww
AEGww
AEOww
AGQww
AHSww
AJOww
AJPww
AKOww
AKPww
AQXww
ARUww
Please consult AME sales office or authorized Rep./Distributor for other output
voltage and package type availability.
2
Analog Microelectronics, Inc.
AME8801/8812/8840
n Ordering Information
300mA CMOS LDO
Part Number
AME8812AEEV
AME8812BEEV
AME8812CEEV
AME8812DEEV
AME8812EEEV
AME8812FEEV
AME8812GEEV
AME8812HEEV
AME8812IEEV
AME8812JEEV
AME8812KEEV
AME8812LEEV
AME8812MEEV
AME8812NEEV
AME8812OEEV
Output Voltage Package Operating Temp. Range
-40OC to +85OC
3.3V
3.0V
2.8V
2.5V
3.8V
3.6V
3.5V
2.7V
3.4V
2.85V
3.7V
1.5V
1.8V
2.9V
3.1V
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
-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
-40OC to +85OC
Please consult AME sales office or authorized Rep./Distributor for other output
voltage and package type availability.
3
Analog Microelectronics, Inc.
300mA CMOS LDO
AME8801/8812/8840
n Ordering Information
Part Number
AME8840AEEV
AME8840BEEV
AME8840CEEV
AME8840DEEV
AME8840EEEV
AME8840FEEV
AME8840GEEV
AME8840HEEV
AME8840IEEV
AME8840JEEV
AME8840KEEV
AME8840LEEV
AME8840MEEV
AME8840NEEV
AME8840OEEV
Marking
Output Voltage Package Operating Temp. Range
-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
-40OC to +85OC
-40OC to +85OC
ALCww
ALDww
ALEww
ALFww
ALGww
ALHww
ALIww
3.3V
3.0V
2.8V
2.5V
3.8V
3.6V
3.5V
2.7V
3.4V
2.85V
3.7V
1.5V
1.8V
2.9V
3.1V
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
ALJww
ALKww
ALLww
ALMww
ALNww
ALOww
ALPww
ALQww
Please consult AME sales office or authorized Rep./Distributor for other output
voltage and package type availability.
4
Analog Microelectronics, Inc.
AME8801/8812/8840
300mA CMOS LDO
n Absolute Maximum Ratings
Parameter
Maximum
Unit
V
Input Voltage
8
PD / (VIN - VO)
GND - 0.3 to VIN + 0.3
B
Output Current
mA
V
Output Voltage
ESD Classification
n Recommended Operating Conditions
Parameter
Ambient Temperature Range
Junction Temperature
Rating
Unit
oC
-40 to +85
-40 to +125
oC
n Thermal Information
Parameter
Maximum
Unit
oC / W
Thermal Resistance (qja)
SOT-25
SOT-25
SOT-26
SOT-26
260
Internal Power Dissipation (PD)
(DT = 100oC)
380
260
mW
oC / W
Thermal Resistance (qja)
Internal Power Dissipation (PD)
(DT = 100oC)
380
150
mW
oC
Maximum Junction Temperature
Caution: Stress above the listed absolute rating may cause permanent damage to the device
5
Analog Microelectronics, Inc.
300mA CMOS LDO
AME8801/8812/8840
n Electronic Specifications
TA = 25oC unless otherwise noted
Test Condition
Parameter
Input Voltage
Symbol
VIN
Min Typ Max Units
Note 1
-1.5
7
V
Output Voltage Accuracy
VO
IO=1mA
1.5
%
1.2V<VO(NOM)<=2.0V
1300
400
300
IO=300mA
See
chart
Dropout Voltage
VDROPOUT
2.0V<VO(NOM)<=2.8V
2.8V<VO(NOM)
mV
VO=VONOM -2.0%
Output Current
IO
ILIM
ISC
IQ
VO>1.2V
300
300
mA
mA
mA
Current Limit
VO>1.2V
VO<0.8V
450
150
30
Short Circuit Current
Quiescent Current
Ground Pin Current
300
50
IO=0mA
A
µ
IGND
IO=1mA to 300mA
35
A
µ
VO < 2.0V
-0.15
0.15
0.1
0.4
1
%
%
%
%
IO=1mA
Line Regulation
REGLINE
2.0V<=VO < 4.0V
-0.1 0.02
VIN=VO+1 to VO+2
-0.4
-1
0.2
0.2
150
30
4.0V <= Vo
Load Regulation
REGLOAD
OTS
IO=1mA to 300mA
oC
oC
Over Temerature Shutdown
Over Temerature Hysterisis
VO Temperature Coefficient
OTH
ppm/oC
TC
30
f=1kHz
f=10kHz
f=100kHz
50
IO=100mA
Power Supply Rejection
PSRR
20
dB
C =2.2 F
µ
O
15
f=10Hz to 100kHz
IO=10mA
Output Voltage Noise
EN Input Threshold
EN Input Bias Current
eN
Co=2.2 F
30
Vrms
µ
µ
VEH
VEL
IEH
VIN=2.7V to 7V
VIN=2.7V to 7V
2.0
0
Vin
0.4
0.1
0.5
1
V
V
VEN=VIN, VIN=2.7V to 7V
VEN=0V, VIN=2.7V to 7V
VIN=5V, VO=0V, VEN<VEL
IO=0.4mA, VEN<VEL
A
µ
IEL
A
µ
Shutdown Supply Current
Shutdown Output Voltage
Note1:VIN(min)=VOUT+VDROPOUT
ISD
0.5
A
µ
VO,SD
0
0.4
V
6
Analog Microelectronics, Inc.
AME8801/8812/8840
300mA CMOS LDO
n Detailed Description
The AME8801/8840 family of CMOS regulators contain
a PMOS pass transistor, voltage reference, error ampli-
fier, over-current protection, and thermal shutdown.
A third capacitor can be connected between the BY-
PASS pin and GND. This capacitor can be a low cost
Polyester Film variety between the value of 0.001 ~
0.01µF. A larger capacitor improves the AC ripple re-
jection, but also makes the output come up slowly. This
"Soft" turn-on is desirable in some applications to limit
turn-on surges.
The P-channel pass transistor receives data from the
error amplifier, over-current shutdown, and thermal pro-
tection circuits. During normal operation, the error am-
plifier compares the output voltage to a precision refer-
ence. Over-current and Thermal shutdown circuits be-
come active when the junction temperature exceeds
150oC, or the current exceeds 300mA. During thermal
shutdown, the output voltage remains low. Normal op-
eration is restored when the junction temperature drops
below 120oC.
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.
n Enable
The AME8801/8840 switches from voltage mode to cur-
rent mode when the load exceeds the rated output cur-
rent. This prevents over-stress. The AME8801/8840
also incorporates current foldback to reduce power dis-
sipation when the output is short circuited. This feature
becomes active when the output drops below 0.8volts,
and reduces the current flow by 65%. Full current is
restored when the voltage exceeds 0.8 volts.
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 1µA. This pin behaves
much like an electronic switch.
n External Capacitors
The AME8801/8840 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 com-
paratively 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 over-
all cost.
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.
7
Analog Microelectronics, Inc.
300mA CMOS LDO
AME8801/8812/8840
Load Step ( 1mA-300mA)
Ground Current vs. Input Voltage
45
40
35
30
25
20
15
10
5
CL=2.2
µF
Output
C
IN=2.2µF
85O
C
25O
C
ILoad
0
0
0
1
2
3
4
5
6
7
8
TIME( 20mS/DIV)
Input Voltage (V)
Chip Enable Transient Response
Chip Enable Transient Response
CL=2
RL=10
µ
Ω
F
CL=2
RL=10
CBYP=1000pF
µ
Ω
F
0
0
0
0
TIME ( 1mS/DIV)
TIME ( 1mS/DIV)
Drop Out Voltage vs Load Current
Drop Out Voltage vs Output Voltage
250
200
150
100
50
300
250
200
150
100
50
Top to bottom
V
O U T =2.5V
VO U T =2.8V
V
V
V
V
O U T =3.0V
O U T =3.3V
O U T =3.5V
O U T =3.8V
IL O A D=300mA
IL O A D=200mA
IL O A D=100mA
0
0
0
50
100
150
200
250
300
2.5
2.75
3
3.25
3.5
3.75
4
Load Current (mA)
Output Voltage (V)
8
Analog Microelectronics, Inc.
AME8801/8812/8840
300mA CMOS LDO
Power Supply Rejection Ratio
Power Supply Rejection Ratio
-20
-30
-40
-50
-60
-70
0
-10
-20
-30
-40
-50
-60
-70
-80
100mA
1mA
CL=2.2
µ
F Tantalum
BYP=1000pF
100mA
CL=2.2
µ
BYP=0
F Tantalum
C
C
100mA
10mA
100mA
10mA
1mA
100
µ
A
100µA
100µA
100 A
µ
-80
1.0E+01
1.0E+03
1.0E+05
1.0E+07
1.0E+01
1.0E+03
1.0E+05
1.0E+07
Frequency (Hz)
Frequency (Hz)
Power Supply Rejection Ratio
Power Supply Rejection Ratio
-10
-20
-30
-40
-10
-20
-30
-40
-50
-60
-70
CBYP = 0
CBYP = 100 pF
CBYP = 0
CBYP = 100 pF
CL = 5.6
Ceramic
IL = 100 mA
µ
F
CL = 10
Tantalum
IL = 100 mA
µ
F
-50
-60
-70
-80
CBYP = 1 nF
CBYP = 1 nF
CBYP = 10 nF
CBYP = 10 nF
-80
1.0E+01 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.0E+06
1.0E+01
1.0E+02
1.0E+03
1.0E+04
1.0E+05
Frequency (Hz)
Frequency (Hz)
Overtemperature Shutdown
Short Circuit Response
RL O A D =100
RS H O R T =0.1
Ω
Ω
0
RL O A D =6.6
Ω
0
0
0
TIME (2mS/DIV)
TIME (0.5Sec/DIV)
9
Analog Microelectronics, Inc.
300mA CMOS LDO
AME8801/8812/8840
Noise Measurement
Current Limit Response
RL O A D =3.3
Ω
CL = 2.2µF
NO FILTER
0
0
TIME (2mS/DIV)
TIME (20mS/DIV)
Transient Line Response
Safe Operating Area
300
100
VIN DC = 5.0V
SOT-23-5
CL = 2.2µF
10
1.0
8.0
0.1
Input-Output Voltage Differential (V)
TIME (2mS/DIV)
10
Analog Microelectronics, Inc.
AME8801/8812/8840
300mA CMOS LDO
Stability vs. ESR vs ILOAD
Stability vs. ESR vs ILOAD
10000
1000
100
10
10000
1000
100
10
Unstable Region
Unstable Region
CL=1 F
µ
CL=2 F
µ
Stable Region
Stable Region
1
1
0.1
0.1
Untested Region
Untested Region
0.01
0.01
0
50
100
150
200
0
50
100
150
200
ILOAD (mA)
ILOAD (mA)
Stability vs. ESR vs ILOAD
Stability vs. ESR vs ILOAD
10000
1000
100
10
10000
1000
100
10
Unstable Region
Unstable Region
CL=10
µ
F
CL=3 F
µ
Stable Region
Stable Region
1
1
0.1
0.1
0.01
0.001
Untested Region
Untested Region
0.01
0
50
100
150
200
0
50
100
150
200
ILOAD (mA)
ILOAD (mA)
11
Analog Microelectronics, Inc.
300mA CMOS LDO
AME8801/8812/8840
Quiescent Current vs.Temp.
Load Regulation vs. Temp.
35
34
33
32
31
30
29
28
27
0.58
0.56
0.54
0.52
0.50
0.48
0.46
0.44
0.42
0.40
-45
-5
25
55
85
-45
-5
25
55
85
Temperature (0C)
Temperature (0C)
Dropout Voltage vs. Temp.
Shut Down Current vs. Temp.
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
220
210
200
190
180
170
160
150
VOUT=3V
-45
-5
25
55
85
-45
-5
25
55
85
Temperature ( 0C)
Temperature ( 0C)
EN Pin LO Bias Current vs. Temp.
-0.20
-0.25
-0.30
-0.35
-0.40
-0.45
-0.50
-45
-5
25
55
85
Temperature (0C)
12
Analog Microelectronics, Inc.
AME8801/8812/8840
300mA CMOS LDO
n Package Dimension
SOT-25
MILLIMETERS
INCHES
MIN
SYMBOLS
A
MIN
1.00
0.00
0.70
0.35
0.08
2.70
1.40
MAX
1.45
0.15
1.25
0.55
0.25
3.10
1.80
MAX
0.0571
0.0591
0.0492
0.0217
0.0098
0.1220
0.0709
0.0394
0.0000
0.0276
0.0138
0.0031
0.1063
0.0551
A
1
A2
b
C
D
E
e
1.90 BSC
0.07480 BSC
H
L
2.60
0.30
0°
3.00
-
10°
0.1024
0.0118
0°
0.1181
-
10°
θ1
S1
0.85
1.05
0.0335
0.0413
SOT-26
MILLIMETERS
INCHES
SYMBOLS
MIN
1.00
0.00
0.70
0.35
0.08
2.70
1.40
MAX
1.40
0.15
1.25
0.50
0.25
3.10
1.80
MIN
MAX
0.0551
0.0591
0.0492
0.0197
0.0098
0.1220
0.0709
A
A1
A2
b
0.0394
0.0000
0.0276
0.0138
0.0031
0.1063
0.0551
C
D
E
e
1.90 BSC
0.0748 BSC
H
L
2.60
0.35
0°
3.00
0.1024
0.0138
0°
0.1181
-
9°
-
9°
1
θ
S1
0.85
1.05
0.0335
0.0413
13
www.analogmicro.com
E-Mail: info@analogmicro.com
Life Support Policy:
These products of Analog Microelectronics, Inc. are not authorized for use as critical components in life-
support devices or systems, without the express written approval of the president
of Analog Microelectronics, Inc.
Analog Microelectronics, 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.
Analog Microelectronics, Inc. , August 2001
Document: 2006-DS8801/8812/8840-E
Corporate Headquarters
Asia Pacific Headquarters
AME, Inc.
2F, 187 Kang-Chien Road, Nei-Hu District
Taipei 114, Taiwan, R.O.C.
Tel : 886 2 2627-8687
Analog Microelectronics, Inc.
3100 De La Cruz Blvd. Suite 201
Santa Clara, CA. 95054-2046
Tel : (408) 988-2388
Fax: (408) 988-2489
Fax: 886 2 2659-2989
相关型号：
©2020 ICPDF网 联系我们和版权申明