AME AME8827

AME
AME8827
n General Description
Low Dropout 1A CMOS Regulator
n Applications
l Motherboard, Desktop, and Computer
The AME8827 family of positive, CMOS linear regulators and provide low dropout voltage (340mV @ 1A) and
excellent PSRR, thus making them ideal for power-saving systems. These rugged devices have both Thermal
Shutdown, and Current limit to prevent device failure under the "Worst" of operating conditions.
Peripherals
l LCD monitor
l Handheld Device
l Data-communication
The AME8827 is stable with an output capacitance of
4.7µF or larger.
n Typical Application
(Fixed Version)
n Features
l Low Dropout Voltage:340mV @ 1A
AME8827
VIN
l Guaranteed 1A Drive current
VOUT
OUT
IN
GND
l Over-Temperature Shutdown
C1
1µF
l Current Limiting protection
C2
4.7µF
l Excellent PSRR : 60dB(typ.)
l Factory Pre-set Output Voltages
l Low Temperature Coefficient
l Input Voltage Range (2.5V - 5.5V)
l Output Voltage Range (1.2V - 3.6V)
l All AME's Green Products Meet RoHS
n Function Block Diagram
(Fixed Version)
Standards
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
R1
Bandgap
Reference
R2
Rev.A.02
GND
1
AME
AME8827
Low Dropout 1A CMOS Regulator
n Pin Configuration
SOT-223
Top View
TO-252-2
Top View
AME8827-AGTxxx
AME8827-ACSxxx
1. IN
1. IN
2. GND (TAB)
AME8827
AME8827
3. OUT
1
2
2. GND (TAB)
3. OUT
3
Die Attach:
1
2
3
Conductive Epoxy
Die Attach:
Conductive Epoxy
n Pin Description
Pin Name
IN
2
Pin Description
Input voltage pin; should be decoupled with 1µF or greater capacitor.
GND
Ground connection pin.
OUT
LDO voltage regulator output pin; should be decoupled with a 4.7µF or greater value low ESR
ceramic capacitor.
Rev.A.02
AME
AME8827
Low Dropout 1A CMOS Regulator
n Ordering Information
AME8827 - x x x xxx
Output Voltage
Number of Pins
Package Type
Pin Configuration
Pin Configuration
A
(SOT-223)
A
(TO-252-2)
Rev.A.02
1. IN
2. GND
3. OUT
1. IN
2. GND
3. OUT
Package
Type
G: SOT-223
C: TO-252
Number of
Pins
T: 3
S: 2
Output Voltage
120:
150:
180:
250:
300:
330:
1.2V
1.5V
1.8V
2.5V
3.0V
3.3V
3
AME
AME8827
Low Dropout 1A CMOS Regulator
n Available Options
Part Number
Marking*
Output
Voltage
Package
Operating Ambient
Temperature Range
AME8827-AGT120
A8827
AKyMXX
1.2V
SOT-223
-40OC to +85OC
AME8827-AGT180
A8827
AIyMXX
1.8V
SOT-223
-40OC to +85OC
AME8827-AGT250
A8827
AGyMXX
2.5V
SOT-223
-40OC to +85OC
AME8827-AGT330
A8827
AByMXX
3.3V
SOT-223
-40OC to +85OC
AME8827-ACS120
A8827
BKyMXX
1.2V
TO-252-2
-40OC to +85OC
AME8827-ACS180
A8827
BIyMXX
1.8V
TO-252-2
-40OC to +85OC
AME8827-ACS250
A8827
BGyMXX
2.5V
TO-252-2
-40OC to +85OC
AME8827-ACS330
A8827
BByMXX
3.3V
TO-252-2
-40OC to +85OC
Note:
1. The first 2 places represent product code. It is assigned by AME such as AK.
2. y is year code and is the last number of a year. Such as the year code of 2008 is 8.
3. A bar on top of first letter represents Green Part such as A8827.
4. The last 3 places MXX represent Marking Code. It contains M as date code in "month", XX as LN code and
that is for AME internal use only. Please refer to date code rule section for detail information.
5. Please consult AME sales office or authorized Rep./Distributor for the availability of output voltage and package
type.
4
Rev.A.02
AME
AME8827
Low Dropout 1A CMOS Regulator
n Absolute Maximum Ratings
Parameter
Symbol
Maximum
Unit
Input Voltage
VIN
-0.3 to 6
V
Output Current
IOUT
PD /(V IN -V OUT)
mA
Output Voltage
VOUT
GND-0.3 to VIN +0.3
V
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
Ambient Temperature Range
TA
-40 to +85
Junction Temperature Range
TJ
-40 to +125
Storage Temperature Range
TSTG
-65 to +150
Rev.A.02
Unit
o
C
5
AME
AME8827
Low Dropout 1A CMOS Regulator
n Thermal Information
Parameter
Package
Die Attach
Thermal Resistance*
(Junction to Case)
Thermal Resistance
(Junction to Ambient)
Symbol
Maximum
θJC
25
o
θJA
120
Internal Power Dissipation
PD
900
Thermal Resistance*
(Junction to Case)
θJC
5
Thermal Resistance
(Junction to Ambient)
Unit
SOT-223
Conductive Epoxy
mW
o
TO-252-2
Internal Power Dissipation
Solder Iron (10 Sec)**
Conductive Epoxy
θJA
90
PD
1200
350
C/W
C/W
mW
o
C
* Measure θJC on backside center of tab.
** MIL-STD-202G 210F
6
Rev.A.02
AME
AME8827
Low Dropout 1A CMOS Regulator
n Electrical Specifications
VIN = VOUT(nom) + 0.5V, ( for VOUT < 2V, VIN=2.5V ), VEN =VIN, IOUT =1mA, and COUT = 4.7uF, CIN=1uF unless otherwise
noted. Typical values are at TA = 25oC.
Parameter
Symbol
Test Condition
Min
Input Voltage
VIN
ADJ Input Bias Current
IADJ
ADJ Reference Voltage
VREF
0.970
VOUT,ACC
-2
Output Accuracy
Dropout Voltage
Quiescent Current
VDROP
IQ
(Note 1)
VIN =5V, VADJ=0.980
∆ VOUT
×100%
∆V IN
VOUT
Units
5.5
V
µA
1
0.980
0.990
V
2
%
(Note2)
IO=1A, 2.0V<V OUT(nom)≦2.5V
430
500
IO=1A, 2.6V≦VOUT(nom)≦3.0V
380
450
IO=1A, VOUT(nom)>3.1V
340
400
VIN =5.5V, IOUT=1mA
70
110
-0.15
0.1
0.15
-0.1
0.02
0.1
-0.055
0.02
0.055
2.5V<VIN <3.5V
REGLINE
Max
IO=1A, VOUT(nom)≦2.0V
for VOUT≦2.0
Line Regulation
Typ
for 2.0V<VOUT≦2.8V
VOUT+1V<VIN <VOUT+2V
for VOUT>2.8V
VOUT+1V<VIN <VOUT+2V
mV
µA
%/V
Load Regulation
∆ VOUT
×100%
VOUT
∆IOUT
REGLOAD
VIN=VOUT+1V
10mA< ILOAD <1A
Output Current Limit
ILIM
VOUT=0.9 x VOUT(nom)
Short Circuit Current
Isc
VIN =VOUT(nom)+1V,
Vo<0.6V
-0.001 0.0005 0.001 %/mA
1.3
COUT=4.7uF, F=1KHz,
1.5
A
0.6
A
60
dB
Power Supply Rejection Ratio
PSRR
Enable High (enabled)
VEN(HI)
VIN(min) ≦ VIN ≦ 5.5V
1.4
VIN
V
Enable Low (shutdown)
VEN(LO)
VIN(min) ≦ VIN ≦ 5.5V
0
0.4
V
IEN
VEN = VIN
0.1
1
µA
ISHDN
VEN =0V, VIN(min)≦VIN ≦5.5V
5
10
µA
Enable Pin Current (enabled)
Shutdown Current
Rev.A.02
IOUT=100mA
7
AME
AME8827
Low Dropout 1A CMOS Regulator
n Electrical Specifications (Contd.)
VIN = VOUT(nom) + 0.5V, ( for VOUT < 2V, VIN=2.5V ), VEN =VIN, IOUT =1mA, and COUT = 4.7uF, CIN=1uF unless otherwise
noted. Typical values are at TA = 25oC.
Parameter
Thermal Shutdown Temperature
Symbol
TSHDN
Test Condition
Shutdown, temperature
increasing
Restore, temperature
decreasing
Min
Typ
Max
Units
150
o
C
130
Note 1: VIN(MIN)=VOUT+VDROP or VIN(min) =2.5V, whichever is greater.
Note 2: For VOUT below 2.0V, Dropout Voltage is the input to output differential.
8
Rev.A.02
AME
AME8827
Low Dropout 1A CMOS Regulator
n Detailed Description
The AME8827 is low-dropout; low quiescent current
linear regulator designed for motherboard, notebook and
LCD monitor applications. The output voltage range from
1.2V to 3.6V, and can drive 1A loading current.
Capacitor Selection and Regulator Stability
Use 1µF for input capacitor and 4.7µFor great for output capacitor on the AME8827. Larger input capacitor
value and low ESR provide better supply noise rejection
and improve line transient response. To reduce output
noise and load transient response, use output capacitor
greater than 4.7µF.
Calculating the Maximum Output Power
The maximum output power of the AME8827 is limited
by the maximum power dissipation of the package. By
calculation the power dissipation of the package as a
function of the input voltage, output voltage and output
current, the maximum input voltage can be obtained. The
maximum power dissipation should not exceed the
package's maximum power rating.
PMAX = ( VIN.MAX - VOUT ) x IOUT
Where:
VIN.MAX = maximum input voltage
PMAX = maximum power dissipation of the package
Rev.A.02
9
AME
AME8827
Low Dropout 1A CMOS Regulator
VOUT vs. Temperature
Quiesent Current vs Temprature
130
1.23
120
1.22
110
Quiesent Current (V)
1.24
V OUT (V)
1.22
1.21
1.20
1.19
1.18
1.18
V OUT = 1.2V
IOUT = 1mA
1.17
-25
0
+25
+50
+75
+100
100
90
IOUT=1A
80
IOUT=1mA
70
60
50
40
30
-50
1.16
-50
V OUT = 3.3V
+125
-25
0
Temperature ( C)
Current Limit vs Input Voltage
3300
+100
+125
VOUT = 3.3V
3100
Current Limit (mA)
3100
Current Limit (mA)
+75
3500
V OUT = 1.2V
3300
2900
2700
2500
2300
2100
2900
2700
2500
2300
2100
1900
1900
1700
1700
1500
2.5
4.5
3.5
5.5
1500
4.3
4.7
5.1
5.5
Input Voltage (V)
Input Voltage (V)
Power Supply Rejection Ratio
Dropout Voltage vs Load Current
500
100
VOUT = 3.3V
IOUT = 0mA~1000mA
90
VOUT = 3.3V
80
400
70
O
TA=125 C
PSRR (dB)
Dropout Voltage (mV)
+50
Current Limit vs Input Voltage
3500
300
200
IOUT=10mA
60
50
40
IOUT=100mA
30
TA=25OC
20
100
O
TA=-40 C
10
0
0
0
200
400
600
Load Current (mA)
10
+25
Temperature (oC)
o
800
1000
1K
10K
100K
1M
Frequency (Hz)
Rev.A.02
AME
AME8827
Low Dropout 1A CMOS Regulator
Load Transient Response
V OUT (50mV/DIV)
V IN = 2.5V~3.5V
VOUT = 1.2V
IOUT = 10mA
V OUT = 1.2V
IOUT = 10mA~1000mA
IOUT (1A/DIV)
VOUT (10mV/DIV)
V IN(1V/DIV)
Line Transient Response
TIME (100µSec/DIV)
TIME (100µSec/DIV)
IOUT (500mA/DIV)
V OUT (2V/DIV)
Short Circuit Current
VOUT = 3.3V
CIN = 10µF
COUT = 4.7µF
TIME (100µSec/DIV)
Rev.A.02
11
AME
AME8827
Low Dropout 1A CMOS Regulator
n Date Code Rule
Month Code
1: January 7: July
2: February 8: August
3: March
9: September
4: April
A: October
5: May
B: November
6: June
C: December
n Tape & Reel Dimensions
SOT-223
P
W
AME
AME
PIN 1
Carrier Tape, Number of Components Per Reel and Reel Size
12
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
SOT-223
12.0±0.1 mm
4.0±0.1 mm
2500pcs
330±1 mm
Rev.A.02
AME
AME8827
Low Dropout 1A CMOS Regulator
n Tape & Reel Dimensions
TO-252-2
P
PIN 1
W
AME
AME
Carrier Tape, Number of Components Per Reel and Reel Size
Rev.A.02
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
TO-252
16.0±0.1 mm
4.0±0.1 mm
2500pcs
330±1 mm
13
AME
AME8827
Low Dropout 1A CMOS Regulator
n Package Dimension
SOT-223
Top View
Side View
SYMBOLS
D
B1
θ
C
13 o (4X)
H
E
PIN 1
MILLIMETERS
MIN
MAX
MIN
MAX
A1
0.01
0.10
0.0004
0.0039
B
0.60
0.84
0.0236
0.0330
B1
2.90
3.15
0.1140
0.1240
C
0.24
0.38
0.0094
0.0150
D
6.20
6.71
0.2441
0.2640
E
3.30
3.71
0.1299
0.1460
2.30 BSC
e
e
Front View
13 o (4X)
A1
14
0.0906 BSC
F
1.40
1.80
0.0551
0.0709
H
6.70
7.30
0.2638
0.2874
θ
F
INCHES
0
o
10
o
0
o
10
o
B
Rev.A.02
AME
AME8827
Low Dropout 1A CMOS Regulator
n Package Dimension
TO-252-2
TOP VIEW
SIDE VIEW
E
K
B
A
L
D1
F
E1
G
PIN1
C
H
D
J
MILLIMETERS
INCHES
SYMBOLS
MIN
MAX
MIN
MAX
A
0.43
0.58
0.0169
0.0230
B
1.60
1.95
0.0630
0.0768
C
0.51
1.78
0.0200
0.0701
D
0.43
0.60
0.0169
0.0236
E
6.35
6.80
0.2500
0.2677
F
G
5.36
7.20
0.2110
0.2835
2.20
3.00
0.0866
0.1181
H
* 2.30
*0.0906
J
0.50
0.97
0.0197
0.0380
K
5.20
5.50
0.2047
0.2165
L
1.35
1.65
0.0531
0.0650
D1
E1
3.81
3.80 REF
5.10
0.1496 REF
0.1500
0.2008
*: Typical Value
Notes:
1. Controlling dimension: Millimeters.
2. Maximum lead thickness includes lead finish thickness Minimum lead thickness is the minimum thickness of base material.
Rev.A.02
15
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 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. , June 2009
Document: 1271-DS8827-A.02
Corporate Headquarter
AME, Inc.
2F, 302 Rui-Guang Road, Nei-Hu District
Taipei 114, Taiwan, R.O.C.
Tel: 886 2 2627-8687
Fax: 886 2 2659-2989