AME AME8841 600ma cmos ldo Datasheet

AME, Inc.
AME8841
n General Description
600mA CMOS LDO
n Functional Block Diagram
The AME8841 linear regulator features low quiescent
current (30µA typ.) with low dropout voltage, making it
ideal for battery applications. The space-saving SO-8
package is attractive for "Pocket? and "Hand Held" applications.
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
2.2µF or greater.
R1
AMP
n Features
R2
Vref =1.215V
l Very Low Dropout Voltage
GND
l Guaranteed 600mA Output
l Accurate to within 1.5%
l 30µA 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
IN
OUT
OUT
AME8841
l All AME's Lead Free Products Meet RoHS
Standards
GND
EN
C1
C2
1µF
2.2µF
5V
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
8
7
6
5
AME8841
1. OUT
2. IN
AME8841
3. GND
4. OUT
5. NC
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
Product Grade
or Option
A:
B:
C:
D:
E:
F:
G:
H:
I:
J:
K:
L:
M:
N:
O:
P:
Q:
R:
S:
U:
V:
W:
Y:
Z:
2
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
4.1V
4.75V
2.65V
5.0V
3.2V
3.15V
2.3V
1.9V
1.7V
1:
2:
3:
4:
1.3V
2.0V
4.2V
4.0V
Operating Ambient
Temperature Range
E: -40 O C to 85 O C
Package Type
H: SO-8
Number
of
Pins
A: 8
Special Feature
Z: Lead Free
AME, Inc.
AME8841
600mA CMOS LDO
n Ordering Information (contd.)
Part Number
Marking*
Output Voltage
Package
Operating Ambient
Temperature Range
AME8841AEHA
8841
AEHA
yyww
3.3V
SO-8
- 40oC to + 85oC
AME8841AEHAZ
8841
AEHA
yyww
3.3V
SO-8
- 40oC to + 85oC
AME8841BEHA
8841
BEHA
yyww
3.0V
SO-8
- 40oC to + 85oC
AME8841BEHAZ
8841
BEHA
yyww
3.0V
SO-8
- 40oC to + 85oC
AME8841CEHA
8841
CEHA
yyww
2.8V
SO-8
- 40oC to + 85oC
2.8V
SO-8
- 40oC to + 85oC
2.5V
SO-8
- 40oC to + 85oC
AME8841CEHAZ
AME8841DEHA
8841
CEHA
yyww
8841
DEHA
yyww
AME8841DEHAZ
8841
DEHA
yyww
2.5V
SO-8
- 40oC to + 85oC
AME8841EEHA
8841
EEHA
yyww
3.8V
SO-8
- 40oC to + 85oC
AME8841EEHAZ
8841
EEHA
yyww
3.8V
SO-8
- 40oC to + 85oC
AME8841FEHA
8841
FEHA
yyww
3.6V
SO-8
- 40oC to + 85oC
AME8841FEHAZ
8841
FEHA
yyww
3.6V
SO-8
- 40oC to + 85oC
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
600mA CMOS LDO
n Ordering Information (contd.)
4
Part Number
Marking*
Output Voltage
Package
Operating Ambient
Temperature Range
AME8841GEHA
8841
GEHA
yyww
3.5V
SO-8
- 40oC to + 85oC
AME8841GEHAZ
8841
GEHA
yyww
3.5V
SO-8
- 40oC to + 85oC
AME8841HEHA
8841
HEHA
yyww
2.7V
SO-8
- 40oC to + 85oC
AME8841HEHAZ
8841
HEHA
yyww
2.7V
SO-8
- 40oC to + 85oC
AME8841IEHA
8841
IEHA
yyww
3.4V
SO-8
- 40oC to + 85oC
AME8841IEHAZ
8841
IEHA
yyww
3.4V
SO-8
- 40oC to + 85oC
AME8841JEHA
8841
JEHA
yyww
2.85V
SO-8
- 40oC to + 85oC
AME8841JEHAZ
8841
JEHA
yyww
2.85V
SO-8
- 40oC to + 85oC
AME8841KEHA
8841
KEHA
yyww
3.7V
SO-8
- 40oC to + 85oC
AME8841KEHAZ
8841
KEHA
yyww
3.7V
SO-8
- 40oC to + 85oC
AME8841LEHA
8841
LEHA
yyww
1.5V
SO-8
- 40oC to + 85oC
AME8841LEHAZ
8841
LEHA
yyww
1.5V
SO-8
- 40oC to + 85oC
AME, Inc.
AME8841
600mA CMOS LDO
n Ordering Information
Part Number
Marking*
Output Voltage
Package
Operating Ambient
Temperature Range
AME8841MEHA
8841
MEHA
yyww
1.8V
SO-8
- 40oC to + 85oC
AME8841MEHAZ
8841
MEHA
yyww
1.8V
SO-8
- 40oC to + 85oC
AME8841NEHA
8841
NEHA
yyww
2.9V
SO-8
- 40oC to + 85oC
AME8841NEHAZ
8841
NEHA
yyww
2.9V
SO-8
- 40oC to + 85oC
AME8841OEHA
8841
OEHA
yyww
3.1V
SO-8
- 40oC to + 85oC
AME8841OEHAZ
8841
OEHA
yyww
3.1V
SO-8
- 40oC to + 85oC
AME8841REHA
8841
REHA
yyww
2.65V
SO-8
- 40oC to + 85oC
AME8841REHAZ
8841
REHA
yyww
2.65V
SO-8
- 40oC to + 85oC
5
AME, Inc.
AME8841
600mA CMOS LDO
n Absolute Maximum Ratings
Parameter
Maximum
Unit
8
V
PD / (VIN - VO)
A
GND - 0.3 to VIN + 0.3
V
Input Voltage
Output Current
Input, Output Voltage
B*
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
Unit
Ambient Temperature Range
TA
- 40 to +85
o
C
Junction Temperature Range
TJ
- 40 to +125
o
C
n Thermal Information
Parameter
Unit
Maximum Junction Temperature
150
o
C
Solder Iron(10 Sec)*
350
o
C
* MIL-STD-202G 210F
6
Maximum
AME, Inc.
AME8841
600mA CMOS LDO
n Electrical Specifications
TA = 25OC unless otherwise noted
Parameter
Symbol
Input Voltage
VIN
Output Voltage Accuracy
VO
Test Condition
IO=1mA
Min
Typ Max
Note 1
7
V
-1.5
1.5
%
1.3V<=VO(NOM) <=1.4V
Dropout Voltage
VDROPOUT
IO=600mA
1.4V<VO(NOM) <=2.0V
VO=VO(NOM) -2.0%
2.0V<VO(NOM) <=2.8V
1900
See 1400
chart 800
2.8V<VO(NOM)
Output Current
Units
mV
600
IO
VO>1.2V
600
Current Limit
ILIM
VO>1.2V
600
Short Circuit Current
ISC
VO<0.8V
300
600
mA
Quiescent Current
IQ
IO=0mA
30
50
µA
Ground Pin Current
IGND
IO=1mA to 600mA
30
50
µA
Line Regulation
Load Regulation
Over Temperature Shutdown
Over Temperature Hysterisis
VO Temperature Coefficient
Power Supply Rejection
Output Voltage Noise
EN Input Threshold
EN Input Bias Current
Shutdown Supply Current
REGLINE
REGLOAD
mA
800
mA
1.3V <= VO <= 1.4V
-0.2
0.2
IO=1mA
1.4V < VO <= 2.0V
-0.15
0.15
VIN =VO+1 to VO+2
2.0V < VO < 4.0V
-0.1
0.02
0.1
VO >= 4.0V
-0.4
0.2
0.4
-1
0.2
1
IO=1mA to 600mA
%
%
150
o
OTH
30
o
TC
30
OTS
PSRR
eN
IO=100mA
CO=2.2µF
f=10Hz to 100kHz
IO=10mA,CBYP=0µF
f =100Hz
60
f =1kHz
50
f =10kHz
20
Co=2.2µF
30
C
C
ppm/oC
dB
mVrms
VEH
VIN =2.7V to 7V
2.0
Vin
V
VEL
VIN =2.7V to 7V
0
0.4
V
IEH
VEN =VIN , VIN =2.7V to 7V
0.1
µA
IEL
VEN =0V, VIN =2.7V to 7V
0.5
µA
ISD
VIN =5V, VO=0V, VEN <VEL
1
µA
0.5
Note1: V IN(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 quiescent current is less than 1µA. This pin behaves much
like an electronic switch.
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 150oC, or
the current exceeds 600mA. During thermal shutdown,
the output voltage remains low. Normal operation is restored 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 incorporates current foldback to reduce power dissipation 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 AME8841 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.
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.
8
AME, Inc.
AME8841
600mA CMOS LDO
Ground Current vs. Input Voltage
Load Step (1mA-600mA)
45
Vo(10mV/DIV)
85 OC
35
30
25
O
Output
C L=2.2µF
CIN=2.2µF
25 C
20
IL (200mA/DIV)
Ground Current (µ A)
40
15
10
5
0
0
1
2
3
4
5
6
7
I Load
0
8
Input Voltage (V)
TIME (20mS/DIV)
Drop Out Voltage vs. Output Voltage
Power Supply Rejection Ratio
0
1200
ILOAD=600mA
800
600
400
100mA
CL=2.2µF Tantalum
Tantalum
C BYP=0
-20
PSRR (dB)
Drop Out Voltage (mV)
-10
1000
-30
-40
-50
10mA
100mA
-60
200
-70
100 µ A
100 µ A
1mA
-80
0
1
2
3
4
5
10
6
Output Voltage (V)
1K
100K
10M
Frequency (Hz)
Safe Operating Area
Noise Measurement
600
8841AEHA
Vo (1mV DIV)
Output Current (mA)
8807AEHA
100
10
0.1
1.0
Input-Output Voltage Differential (V)
C L=2.2µF
No Filter
8.0
TIME (20ms/DIV)
9
AME, Inc.
AME8841
600mA CMOS LDO
Current Limit Response
I OUT (200mA/DIV)
V OUT (1V/DIV)
Overtemperature Shutdown
0
0
C LOAD =2.2µF
C IN=1.0µF
RLOAD=3.3Ω
VOUTNOM =3.3V
IOUT (200mA/DIV)
VOUT (1V/DIV)
R LOAD=6.6 Ω
TIME (0.5Sec/DIV)
TIME (2mS/DIV)
Enable (2V/DIV)
Chip Enable Transient Response
C L=2µF
R L=10Ω
0
Output (1V/DIV)
C LOAD=2.2µF
C IN=1µF
R LOAD <100mΩ
VOUT (1V/DIV)
IOUT (200mV/DIV)
Short Circuit Response
0
TIME (1mS/DIV)
TIME (2mS/DIV)
Line Transient Response
Quiescent Current vs. Temp.
38
C LOAD=2.2µF
ILOAD =1mA
VOUTDC=3.3V
VINDC=4.5V
36
34
32
30
28
26
TIME (200mS/DIV)
10
Quiescent Current (uA)
VOUT (10mV/DIV)
V IN (1V/DIV)
40
-20
0
20
40
Temperature ( o C)
60
80
AME, Inc.
AME8841
600mA CMOS LDO
Shut Down Current vs. Temp.
0.65
-0.25
0.60
Shut Down Current (uA)
EN pin LO bias current (uA)
EN pin vs. Temp.
-0.20
-0.30
-0.35
-0.40
-0.45
-0.50
-20
0.55
0.50
0.45
0.40
0.35
0.30
0
20
40
60
80
-20
0
Temperature (oC)
Dropout Voltage vs. Temp.
60
80
(oC)
Vout vs. Temp.
2.660
480
2.655
Vout @ Vin=Vout+2V (V)
Dropout Voltage @ 600mA (mV)
40
Temperature
500
460
440
420
400
380
360
-20
20
2.650
2.645
2.640
2.635
2.630
2.625
0
20
40
60
80
2.620
-20
0
20
40
60
80
Temperature (oC)
Temperature (oC)
Load Regulation vs. Temp.
Load Regulation (%)
0.55
0.50
0.45
0.40
0.35
0.30
-20
0
20
40
60
80
Temperature (o C)
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
12
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
AME, Inc.
AME8841
600mA CMOS LDO
n Package Dimension
SO-8
Top View
SYMBOLS
Side View
C
D
L
θ
Front View
e
MAX
MIN
MAX
A
1.35
1.75
0.05315
0.0689
A1
0.10
0.25
0.00394 0.00984
A
1.473 REF
0.058 REF
B
0.33
0.51
0.01299 0.02008
C
0.19
0.25
0.00748 0.00984
D
4.80
5.00
0.18898 0.19685
E
3.80
4.00
0.14961 0.15748
1.27 BSC
e
0.050 BSC
L
0.40
1.27
0.01575
0.05
y
-
0.10
-
0.004
θ
0
o
8
o
0
o
8
o
A1
A2
7o(4X)
INCHES
MIN
A2
E
MILLIMETERS
B
13
www.ame.com.tw
E-Mail: [email protected]
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. , March 2006
Document: 2006/2095-DS8841-H.01
Corporate Headquarter
U.S.A. (Subsidiary)
AME, Inc.
Analog Microelectronics, Inc.
2F, NO. 302 Rui-Guang Road, Nei-Hu Dist.
Taipei 114 Taiwan.
Tel : 886 2 2627-8687
Fax: 886 2 2659-2989
3100 De La Cruz Blvd. Suite 201
Santa Clara, CA. 95054-2046
Tel : (408) 988-2388
Fax: (408) 988-2489