AME8842IEHA [AME]
600mA CMOS LDO; 600毫安CMOS LDO型号: | AME8842IEHA |
厂家: | ANALOG MICROELECTRONICS |
描述: | 600mA CMOS LDO |
文件: | 总12页 (文件大小:93K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
Analog Microelectronics, Inc.
AME8806 / 8809 / 8842
600mA CMOS LDO
n General Description
n Features
The AME8806/8809 family of positive, linear regula-
tors feature low quiescent current (30µA typ.) with low
dropout voltage, making them ideal for battery applica-
tions. The space-saving SO-8 package is attractive for
"Pocket" and "Hand Held" applications.
l Very Low Dropout Voltage
l Guaranteed 600mA 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 SO-8 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 AME8806/8809 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
IN
OUT
l Battery Powered Widgets
l Electronic Scales
Overcurrent
Shutdown
n Typical Application
Thermal
Shutdown
OUT
IN
OUT
IN
EN
BYP
AME8806
AME8809
BYP
EN
GND
R1
R2
C2
C3
C1
AMP
5V
1µF
1 F
µ
2.2
µ
F
V
ref=1.215V
GND
1
Analog Microelectronics, Inc.
600mA CMOS LDO
AME8806 / 8809 / 8842
n Pin Configuration
SO-8 Top View
SO-8 Top View
IN
OUT
GND
GND
BYP
EN
IN
GND
GND
GND
GND
GND
GND
EN
OUT
BP
AME8809
AME8806
PG
IN
GND
GND
GND
GND
OUT
EN
AME8842
2
Analog Microelectronics, Inc.
AME8806 / 8809 / 8842
600mA CMOS LDO
n Ordering Information
Part Number
Marking
Output Package Operating Temp.
8806
AEHA
yyww
8806
BEHA
yyww
8806
CEHA
yyww
8806
DEHA
yyww
8806
EEHA
yyww
8806
FEHA
yyww
8806
GEHA
yyww
8806
HEHA
yyww
8806
IEHA
yyww
8806
JEHA
yyww
8806
KEHA
yyww
8806
LEHA
yyww
8806
MEHA
yyww
8806
NEHA
yyww
8806
-40OC to +85OC
AME8806AEHA
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
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
-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
AME8806BEHA
AME8806CEHA
AME8806DEHA
AME8806EEHA
AME8806FEHA
AME8806GEHA
AME8806HEHA
AME8806IEHA
AME8806JEHA
AME8806KEHA
AME8806LEHA
AME8806MEHA
AME8806NEHA
AME8806OEHA
OEHA
yyww
3
Analog Microelectronics, Inc.
600mA CMOS LDO
AME8806 / 8809 / 8842
n Ordering Information
Part Number
Marking
Output Package
Operating Temp.
8809
AEHA
yyww
8809
BEHA
yyww
8809
CEHA
yyww
8809
DEHA
yyww
8809
EEHA
yyww
8809
FEHA
yyww
8809
GEHA
yyww
8809
HEHA
yyww
8809
IEHA
yyww
8809
JEHA
yyww
8809
KEHA
yyww
8809
LEHA
yyww
8809
MEHA
yyww
8809
NEHA
yyww
8809
-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
AME8809AEHA
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
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
AME8809BEHA
AME8809CEHA
AME8809DEHA
AME8809EEHA
AME8809FEHA
AME8809GEHA
AME8809HEHA
AME8809IEHA
AME8809JEHA
AME8809KEHA
AME8809LEHA
AME8809MEHA
AME8809NEHA
AME8809OEHA
OEHA
yyww
Please consult AME sales office or authorized Rep./Distributor
for other output voltage and package type availability.
4
Analog Microelectronics, Inc.
AME8806 / 8809 / 8842
600mA CMOS LDO
n Ordering Information
Part Number
Marking
Output
Package
Operating Temp.
8842
AEHA
yyww
8842
BEHA
yyww
8842
CEHA
yyww
8842
DEHA
yyww
8842
EEHA
yyww
8842
FEHA
yyww
8842
GEHA
yyww
8842
HEHA
yyww
8842
IEHA
yyww
8842
JEHA
yyww
8842
KEHA
yyww
8842
LEHA
yyww
8842
M EHA
yyww
8842
NEHA
yyww
8842
-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
AME8842AEHA
3.3V
SO-8
AME8842BEHA
AME8842CEHA
AME8842DEHA
AME8842EEHA
AME8842FEHA
AME8842GEHA
AME8842HEHA
AME8842IEHA
AME8842JEHA
AME8842KEHA
AME8842LEHA
AME8842M EHA
AME8842NEHA
AME8842OEHA
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
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
OEHA
yyww
Please consult AM E sales office or authorized Rep./Distributor
for other output voltage and package type availability.
5
Analog Microelectronics, Inc.
600mA CMOS LDO
AME8806 / 8809 / 8842
n Absolute Maximum Ratings
Parameter
Input Voltage
Maximum
Unit
V
8
Output Current
A
PD / (VIN - VO)
GND - 0.3 to VIN + 0.3
B
Input, Output Voltage
ESD Classification
V
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 (
θja
)
123.7
Internal Power Dissipation (PD)
810
150
300
mW
oC
( T = 100oC)
∆
Maximum Junction Temperature
oC
Maximum Lead Temperature ( 10 Sec)
Caution: Stress above the listed absolute rating may cause permanent damage to the device
6
Analog Microelectronics, Inc.
AME8806 / 8809 / 8842
600mA CMOS LDO
n Electrical Specifications
TA = 25oC unless otherwise noted
Test Condition
Parameter
Input Voltage
Symbol
VIN
Min
Typ Max Units
Note 1
-1.5
8
V
Output Voltage Accuracy
VO
IO=1mA
1.5
%
1.5V<VO(NOM)<=2.0V
1400
800
600
IO=600mA
See
chart
Dropout Voltage
VDROPOUT
2.0V<VO(NOM)<=2.8V
2.8V<VO(NOM)<3.8V
mV
VO=VONOM -2.0%
Output Current
IO
ILIM
ISC
IQ
VO>1.2V
600
600
mA
mA
mA
Current Limit
VO>1.2V
VO<0.8V
800
300
30
Short Circuit Current
Quiescent Current
Ground Pin Current
600
50
IO=0mA
A
µ
IGND
IO=1mA to 600mA
30
50
A
µ
VO < 2.0V
0.15
0.1
1
%
%
IO=5mA
VIN=VO+1 to VO+2
Line Regulation
REGLINE
VO >= 2.0V
0.02
0.2
150
30
Load Regulation
REGLOAD
OTS
IO=1mA to 600mA
%
oC
Over Temerature Shutdown
Over Temerature Hysterisis
VO Temperature Coefficient
oC
OTH
ppm/oC
TC
30
f=1kHz
f=10kHz
f=100kHz
75
IO=100mA
C =2.2 F ceramic
Power Supply Rejection
PSRR
55
dB
µ
O
CBYP=0.01 F
µ
30
Co=2.2 F
30
f=10Hz to 100kHz
µ
Output Voltage Noise
EN Input Threshold
eN
Vrms
µ
IO=10mA,CBYP=0.01 F
µ
Co=100 F
20
µ
VEH
VEL
IEH
VIN=2.7V to 8V
2.0
0
Vin
0.4
0.1
0.5
1
V
V
VIN=2.7V to 8V
V
EN=VIN, VIN=2.7V to 8V
A
µ
EN Input Bias Current
IEL
VEN=0V, VIN=2.7V to 8V
VIN=5V, VO=0V, VEN<VEL
A
µ
Shutdown Supply Current
ISD
0.5
A
µ
Note1:VIN(min)=VOUT+VDROPOUT
7
Analog Microelectronics, Inc.
600mA CMOS LDO
AME8806 / 8809 / 8842
n Detailed Description
The AME8806/8809 family of CMOS regulators con-
tain a PMOS pass transistor, voltage reference, error
amplifier, over-current protection, and thermal shut-
down.
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
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.
o
150 C, or the current exceeds 600mA. During thermal
shutdown, the output voltage remains low. Normal op-
eration is restored when the junction temperature drops
o
below 120 C.
n 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 1µA. This pin behaves
much like an electronic switch.
The AME8806/8809 switches from voltage mode to cur-
rent mode when the load exceeds the rated output cur-
rent. This prevents over-stress. The AME8806/8809
also incorporates current foldback to reduce power dis-
sipation when the output is short circuited. This feature
becomes active when the output drops below 0.8 volts,
and reduces the current flow by 65%. Full current is
restored when the voltage exceeds 0.8 volts.
n External Capacitors
The AME8806/8809 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.
8
Analog Microelectronics, Inc.
AME8806 / 8809 / 8842
600mA CMOS LDO
Load Step ( 1mA-600mA)
Ground Current vs. Input Voltage
45
40
35
30
25
20
15
10
5
85O
C
25O
C
0
0
0
1
2
3
4
5
6
7
8
TIME ( 20mS/DIV)
Input Voltage (V)
Drop Out Voltage vs. Output Voltage
Power Supply Rejection Ratio
0
-10
-20
-30
-40
-50
-60
-70
-80
0.3
0.25
0.2
0.15
0.1
0.05
0
100mA
C L=2.2
µ
F Tantalum
BYP=0
IL O A D=600mA
C
10mA
100mA
1mA
µ
100 A
µ
100 A
1.0E+01
1.0E+03
1.0E+05
1.0E+07
2
2.5
3
3.5
4
4.5
5
5.5
Output Voltage (V)
Frequency (Hz)
Power Supply Rejection Ratio
Safe Operating Area
-20
-30
-40
-50
-60
-70
-80
600
100mA
1mA
CL=2.2
µF Tantalum
C
BYP=1000pF
100mA
100
10mA
100µA
100µA
10
1.0
8.0
0.1
1.0E+01
1.0E+03
1.0E+05
1.0E+07
Input-Output Voltage Differential (V)
Frequency (Hz)
9
Analog Microelectronics, Inc.
600mA CMOS LDO
AME8806 / 8809 / 8842
Noise Measurement
Overtemperature Shutdown
CL = 2.2µF
NO FILTER
0
0
RL O A D =6.6
Ω
TIME (0.5Sec/DIV)
TIME (20mS/DIV)
Current Limit Response
Short Circuit Response
CLOAD=2.2
CIN=1
RLOAD<100m
µF
F
Ω
µ
CL O A D =2.2
IN=1.0
L O A D =3.3
VO U T N O M =3.3V
µF
C
µF
R
Ω
TIME (2mS/DIV)
TIME (2mS/DIV)
Line Transient Response
Chip Enable Transient Response
CL=2
µF
RL=10
Ω
CL O A D =2.2µF
0
0
I
V
V
L O A D =1mA
O U T D C =3.3V
INDC=4.5V
TIME (200mS/DIV)
TIME ( 1mS/DIV)
10
Analog Microelectronics, Inc.
AME8806 / 8809 / 8842
600mA CMOS LDO
n Package Dimension
SO-8
MILLIMETERS
INCHES
MIN
SYMBOLS
A
MIN
1.35
0.10
—
MAX
1.75
0.25
—
MAX
0.069
0.010
—
0.053
0.004
—
A
1
A2
B
C
D
E
e
0.33
0.19
4.80
3.80
—
0.51
0.25
5.00
4.00
—
0.013
0.007
0.189
0.150
—
0.020
0.010
0.1970
0.157
—
θ
H
L
y
5.80
0.40
—
0°
6.20
1.27
0.10
8°
0.228
0.016
0.244
0.050
0.004
8°
0°
θ
11
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-DS8806/8809-D
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
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