AME8841BEHAZ [AME]
600mA CMOS LDO; 600毫安CMOS LDO
| 型号： | AME8841BEHAZ |
| 厂家： | 
ANALOG MICROELECTRONICS |
| 描述： | 600mA CMOS LDO |
| 文件： | 总14页 (文件大小：119K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AME, Inc.
AME8841
600mA CMOS LDO
n Functional Block Diagram
n General Description
The AME8841 linear regulator features low quiescent
current (30mA typ.) with low dropout voltage, making it
ideal for battery applications. The space-saving SO-8
package is attractive for "Pocket? and "Hand Held" appli-
cations.
IN
OUT
Overcurrent
Shutdown
These rugged devices have both Thermal Shutdown,
and Current Fold-back to prevent device failure under the
"Worst" of operating conditions.
Thermal
Shutdown
EN
The AME8841 is stable with an output capacitance of
2.2mF or greater.
R1
R2
AMP
n Features
Vref=1.215V
l Very Low Dropout Voltage
l Guaranteed 600mA Output
l Accurate to within 1.5%
GND
l 30mA Quiescent Current
l Over-Temperature Shutdown
l Current Limiting
n Typical Application
l Short Circuit Current Fold-back
l Power-Saving Shutdown Mode
l Space-Saving SO-8 Package
l Many fixed output voltages available
l Low Temperature Coefficient
IN
OUT
IN
OUT
AME8841
l All AME's Lead Free Products Meet RoHS
GND
EN
Standards
C1
C2
5V
1mF
2.2mF
n Applications
l Instrumentation
l Portable Electronics
l Wireless Devices
l Cordless Phones
l PC Peripherals
l Battery Powered Widgets
l Electronic Scales
1
AME, Inc.
AME8841
600mA CMOS LDO
n Pin Configuration
SO-8
Top View
AME8841
1. OUT
2. IN
8
7
6
5
3. GND
4. OUT
5. NC
AME8841
6. NC
1
2
3
4
7. EN
8. NC
* Die Attach:
Non-Conductive Epoxy
n Ordering Information
AME8841 x x x x x
Special Feature
Number of Pins
Package Type
Operating Ambient Temperature Range
Product Grade or Option
Number
of
Pins
Product Grade
or Option
Operating Ambient
Temperature Range
Package Type
Special Feature
-40OC to 85OC
E:
H:
A: 8
A: 3.3V
1: 1.3V
2: 2.0V
3: 4.2V
4: 4.0V
SO-8
Z: Lead Free
B: 3.0V
C: 2.8V
D: 2.5V
E: 3.8V
F: 3.6V
G: 3.5V
H: 2.7V
I: 3.4V
J: 2.85V
K: 3.7V
L: 1.5V
M: 1.8V
N: 2.9V
O: 3.1V
P: 4.1V
Q: 4.75V
R: 2.65V
S: 5.0V
U: 3.2V
V: 3.15V
W: 2.3V
Y: 1.9V
Z: 1.7V
2
AME, Inc.
AME8841
n Ordering Information (contd.)
600mA CMOS LDO
Operating Ambient
Temperature Range
Part Number
Marking*
Output Voltage Package
8841
AEHA
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
AME8841AEHA
3.3V
3.3V
3.0V
3.0V
2.8V
2.8V
2.5V
2.5V
3.8V
3.8V
3.6V
3.6V
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
8841
AEHA
yyww
AME8841AEHAZ
AME8841BEHA
AME8841BEHAZ
AME8841CEHA
AME8841CEHAZ
AME8841DEHA
AME8841DEHAZ
AME8841EEHA
AME8841EEHAZ
AME8841FEHA
AME8841FEHAZ
8841
BEHA
yyww
8841
BEHA
yyww
8841
CEHA
yyww
8841
CEHA
yyww
8841
DEHA
yyww
8841
DEHA
yyww
8841
EEHA
yyww
8841
EEHA
yyww
8841
FEHA
yyww
8841
FEHA
yyww
Note: yyww represents the date code
* A line on top of the first character represents lead free plating such as 8841
Please consult AME sales office or authorized Rep./Distributor for the availability of output voltage and package type.
3
AME, Inc.
AME8841
n Ordering Information (contd.)
600mA CMOS LDO
Operating Ambient
Temperature Range
Part Number
Marking*
Output Voltage Package
8841
GEHA
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
AME8841GEHA
3.5V
3.5V
2.7V
2.7V
3.4V
3.4V
2.85V
2.85V
3.7V
3.7V
1.5V
1.5V
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
8841
GEHA
yyww
AME8841GEHAZ
AME8841HEHA
AME8841HEHAZ
AME8841IEHA
8841
HEHA
yyww
8841
HEHA
yyww
8841
IEHA
yyww
8841
IEHA
yyww
AME8841IEHAZ
AME8841JEHA
AME8841JEHAZ
AME8841KEHA
AME8841KEHAZ
AME8841LEHA
AME8841LEHAZ
8841
JEHA
yyww
8841
JEHA
yyww
8841
KEHA
yyww
8841
KEHA
yyww
8841
LEHA
yyww
8841
LEHA
yyww
4
AME, Inc.
AME8841
n Ordering Information
600mA CMOS LDO
Operating Ambient
Temperature Range
Part Number
Marking*
Output Voltage Package
8841
MEHA
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
AME8841MEHA
1.8V
1.8V
2.9V
2.9V
3.1V
3.1V
2.65V
2.65V
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
8841
MEHA
yyww
AME8841MEHAZ
AME8841NEHA
AME8841NEHAZ
AME8841OEHA
AME8841OEHAZ
AME8841REHA
AME8841REHAZ
8841
NEHA
yyww
8841
NEHA
yyww
8841
OEHA
yyww
8841
OEHA
yyww
8841
REHA
yyww
8841
REHA
yyww
5
AME, Inc.
AME8841
600mA CMOS LDO
n Absolute Maximum Ratings
Parameter
Input Voltage
Maximum
Unit
8
PD / (VIN - VO)
GND - 0.3 to VIN + 0.3
B*
V
A
V
Output Current
Input, Output Voltage
ESD Classification
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device.
* HBM B:2000V~3999V
n Recommended Operating Conditions
Parameter
Symbol
Rating
- 40 to +85
- 40 to +125
Unit
oC
oC
Ambient Temperature Range
Junction Temperature Range
TA
TJ
n Thermal Information
Parameter
Maximum
Unit
oC
Maximum Junction Temperature
150
350
oC
Solder Iron(10 Sec)*
* MIL-STD-202G 210F
6
AME, Inc.
AME8841
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
7
V
Output Voltage Accuracy
VO
IO=1mA
1.5
%
1.3V<=VO(NOM)<=1.4V
1900
1400
800
1.4V<VO(NOM)<=2.0V
2.0V<VO(NOM)<=2.8V
2.8V<VO(NOM)
IO=600mA
See
chart
Dropout Voltage
VDROPOUT
mV
VO=VO(NOM) -2.0%
600
Output Current
IO
ILIM
ISC
VO>1.2V
600
600
mA
mA
mA
mA
Current Limit
VO>1.2V
VO<0.8V
800
Short Circuit Current
Quiescent Current
Ground Pin Current
300 600
IQ
IO=0mA
30
30
50
50
IGND
IO=1mA to 600mA
mA
1.3V <= VO <= 1.4V
-0.2
0.2
1.4V < VO <= 2.0V
2.0V < VO < 4.0V
VO >= 4.0V
-0.15
0.15
IO=1mA
Line Regulation
REGLINE
%
VIN=VO+1 to VO+2
-0.1 0.02 0.1
-0.4
-1
0.2 0.4
Load Regulation
REGLOAD
OTS
IO=1mA to 600mA
0.2
150
30
1
%
oC
oC
ppm/oC
Over Temperature Shutdown
Over Temperature Hysterisis
VO Temperature Coefficient
OTH
TC
30
f =100Hz
f =1kHz
60
IO=100mA
Power Supply Rejection
Output Voltage Noise
PSRR
eN
50
dB
CO=2.2mF
f =10kHz
20
f=10Hz to 100kHz
Co=2.2mF
30
mVrms
IO=10mA,CBYP=0mF
VEH
VEL
IEH
VIN=2.7V to 7V
2.0
0
Vin
0.4
0.1
0.5
1
V
V
EN Input Threshold
VIN=2.7V to 7V
VEN=VIN, VIN=2.7V to 7V
VEN=0V, VIN=2.7V to 7V
VIN=5V, VO=0V, VEN<VEL
mA
mA
mA
EN Input Bias Current
IEL
Shutdown Supply Current
ISD
0.5
Note1: VIN(MIN)=VOUT+VDROPOUT
Note2: To prevent the Short Circuit Current protection feature from being prematurely activated, the input voltage must be
applied before a current source load is applied.
7
AME, Inc.
AME8841
600mA CMOS LDO
n Detailed Description
n Enable
The AME8841 family of CMOS regulators contain a
PMOS pass transistor, voltage reference, error amplifier,
over-current protection, and thermal shutdown.
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 qui-
escent current is less than 1mA. This pin behaves much
like an electronic switch.
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 150oC, or
the current exceeds 600mA. During thermal shutdown,
the output voltage remains low. Normal operation is re-
stored when the junction temperature drops below 110oC.
The AME8841 switches from voltage mode to current
mode when the load exceeds the rated output current.
This prevents over-stress. The AME8841 also incorpo-
rates current foldback to reduce power dissipation when
the output is short circuited. This feature becomes ac-
tive 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 AME8841 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.
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.
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.
8
AME, Inc.
AME8841
600mA CMOS LDO
Ground Current vs. Input Voltage
Load Step (1mA-600mA)
45
40
35
30
25
20
15
10
5
85O
C
25O
C
0
0
0
1
2
3
4
5
6
7
8
Input Voltage (V)
TIME (20mS/DIV)
Drop Out Voltage vs. Output Voltage
Power Supply Rejection Ratio
0
1200
1000
800
600
400
200
0
-10
100mA
ILOAD=600mA
C =2.2mF
Tantalum
L
-20
-30
-40
-50
-60
-70
-80
C BYP=0
10mA
1mA
100mA
100 m A
100 m
A
10
1K
100K
10M
1
2
3
4
5
6
Output Voltage (V)
Frequency (Hz)
Safe Operating Area
Noise Measurement
600
8807AEHA
8841AEHA
CL=2.2mF
No Filter
100
10
1.0
8.0
0.1
TIME (20ms/DIV)
Input-Output Voltage Differential (V)
9
AME, Inc.
AME8841
600mA CMOS LDO
Overtemperature Shutdown
Current Limit Response
0
0
RLOAD=6.6
W
CLOAD=2.2mF
CIN=1.0mF
RLOAD=3.3W
VOUTNOM=3.3V
TIME (0.5Sec/DIV)
TIME (2mS/DIV)
Short Circuit Response
Chip Enable Transient Response
CLOAD=2.2mF
CIN=1mF
RLOAD<100mW
CL=2mF
RL=10W
0
0
TIME (1mS/DIV)
TIME (2mS/DIV)
Line Transient Response
Quiescent Current vs. Temp.
40
38
36
34
32
30
28
26
CLOAD=2.2mF
ILOAD =1mA
VOUTDC=3.3V
VINDC=4.5V
-20
0
20
40
60
80
TIME (200mS/DIV)
Temperature (oC)
10
AME, Inc.
AME8841
600mA CMOS LDO
EN pin vs. Temp.
Shut Down Current vs. Temp.
-0.20
-0.25
0.65
0.60
0.55
0.50
0.45
-0.30
-0.35
-0.40
0.40
-0.45
-0.50
0.35
0.30
-20
0
20
40
60
80
-20
0
20
40
60
80
Temperature (oC)
Temperature (oC)
Dropout Voltage vs. Temp.
Vout vs. Temp.
500
480
460
440
420
400
2.660
2.655
2.650
2.645
2.640
2.635
2.630
380
360
2.625
2.620
-20
0
20
40
60
80
-20
0
20
40
60
80
Temperature (oC)
Temperature (oC)
Load Regulation vs. Temp.
0.55
0.50
0.45
0.40
0.35
0.30
-20
0
20
40
60
80
Temperature (oC)
11
AME, Inc.
AME8841
600mA CMOS LDO
n Tape and Reel Dimension
SO-8
P
PIN 1
W
Carrier Tape, Number of Components Per Reel and Reel Size
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
SO-8
12.0±0.1 mm
4.0±0.1 mm
2500pcs
330±1 mm
12
AME, Inc.
AME8841
600mA CMOS LDO
n Package Dimension
SO-8
MILLIMETERS
INCHES
MIN MAX
SYMBOLS
Top View
Side View
MIN
1.35
0.10
MAX
1.75
0.25
A
A1
A2
B
C
D
E
0.05315 0.0689
0.00394 0.00984
0.058 REF
C
1.473 REF
E
0.33
0.19
4.80
3.80
0.51
0.25
5.00
4.00
0.01299 0.02008
0.00748 0.00984
0.18898 0.19685
0.14961 0.15748
0.050 BSC
D
L
θ
1.27 BSC
e
Front View
L
0.40
-
1.27
0.10
8o
0.01575
0.05
0.004
8o
7o(4X)
y
-
0o
0o
q
e
B
13
www.ame.com.tw
E-Mail: sales@ame.com.tw
Life Support Policy:
These products of AME, Inc. are not authorized for use as critical components in life-support devices or sys-
tems, 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.
ã AME, Inc. , March 2006
Document: 2006/2095-DS8841-H.01
Corporate Headquarter
U.S.A. (Subsidiary)
AME, Inc.
Analog Microelectronics, Inc.
3100 De La Cruz Blvd. Suite 201
Santa Clara, CA. 95054-2046
Tel : (408) 988-2388
2F, NO. 302 Rui-Guang Road, Nei-Hu Dist.
Taipei 114 Taiwan.
Tel : 886 2 2627-8687
Fax: 886 2 2659-2989
Fax: (408) 988-2489
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