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AME
AME8818
n General Description
The AME8818 is a CMOS linear regulator. It operated from 2.5V to 5.5V input voltage and delivers up to 300mA output current. The AME8818 provide low quiescent current (70uA typ) low dropout voltage (230mV @ 300mA typ), and excellent PSRR, thus marking them ideal for Data-Communications and battery applications. The AME8818 provide over temperature and over current protected functions. It is stable with an output capacitance of 1uF or larger.
Low Dropout 300mA CMOS Regulator
n Functional Block Diagram
IN OUT Overcurrent Shutdown Thermal Shutdown EN R1
A
BYP/NC Bandgap Reference R2
GND
n Features
l Input voltage range is from 2.5V to 5.5V l Output voltage range is from 1.2V to 4.5V l Low Dropout: 230mV @ 300mA l Guaranteed 300mA Drive Current l Factory Pre-set output voltage l Only 1uF Output Capacitor Required for Stability l Provided OTP, current limit l All AME' s Green Products Meet RoHS Standards
CIN 1F EN AME8818 NC GND COUT 1F VIN VOUT IN OUT
n Typical Application
Figure 1
V IN
VOUT IN EN OUT
n Applications
EN
CIN 1F
AME8818
GND COUT 1F
l Data-Communication l Laptop, Palmtops, Notebook computers l Battery Power Equipment l Handheld Device l PCMCIA Cards
OFF
ON
BYP
C2 1nF
Figure 2
Rev.A.01
1
AME
AME8818
n Pin Configuration
SOT-23 Top View
3
Low Dropout 300mA CMOS Regulator
AME8818AEET 1. GND 2. OUT 3. IN
5
SOT-25 Top View
4
AME8818AEEV 1. IN 2. GND 3. EN
AME8818
AME8818
4. BYP 5. OUT
1
2
Die Attach: Non-Conductive Epoxy
1
2
3
Die Attach: Conductive Epoxy
SOT-25 Top View
5 4
AME8818BEEV 1. IN 2. GND 3. EN 4. NC 5. OUT
5
SOT-25 Top View
4
AME8818CEEV 1. EN 2. GND 3. IN
AME8818
AME8818
4. OUT 5. NC
1
2
3
Die Attach: Conductive Epoxy
1
2
3
Die Attach: Conductive Epoxy
n Pin Description
Pin Name
IN GND OUT
Pin Description
Input voltage pin. It should be decoupled with 1F or greater capacitor. Ground connection pin. LDO voltage regulator output pin. It should be decoupled with a 1F or greater value low ESR ceramic capacitor. The Enable pin normally floats high. When pulled low, the PMOS pass transistors shut off, and all internal circuit are powered down. No Internal Connection Bypass capacitor connection. In AME8818BEEV and AME8818CEEV, IC will select internal circuit to improve ESR. In AME8818AEEV, IC will select external circuit to improve ESR and AC ripple rejection.
EN NC BYP
2
Rev.A.01
AME
AME8818
n Ordering Information AME8818 x x x x xxx x
Special Feature1 Output Voltage Number of Pins Package Type Operating Ambient Temperature Range Pin Configuration
Low Dropout 300mA CMOS Regulator
Pin Configuration A: 1. GND 2. OUT 3. IN A: 1.IN 2.GND 3.EN 4.BYP 5.OUT B: 1.IN 2.GND 3.EN 4.NC 5.OUT C: 1.EN 2.GND 3.IN 4.OUT 5.NC
Operating Ambient Temperature Range E: -40OC to +85OC
Package Type E: SOT-2X
Number of Pins T: 3 V: 5
Output Voltage Special Feature 1
(SOT-23)
(SOT-25)
(SOT-25)
120: 150: 180: 250: 280: 285: 290: 300: 310: 320: 330: 360: 390:
V=1.2V V=1.5V V=1.8V V=2.5V V=2.8V V=2.85V V=2.9V V=3.0V V=3.1V V=3.2V V=3.3V V=3.6V V=3.9V
Z: Green
(SOT-25)
Rev.A.01
3
AME
AME8818
n Available Options
Part Number
AME8818AEET120Z AME8818AEET150Z AME8818AEET250Z AME8818AEET300Z AME8818AEET310Z AME8818AEEV120Z AME8818AEEV180Z AME8818AEEV320Z AME8818BEEV120Z AME8818BEEV330Z AME8818CEEV390Z
Low Dropout 300mA CMOS Regulator
Marking
BVPMXX BVQMXX BVSMXX BVWMXX BVXMXX BWAMXX BWCMXX BYEMXX BWOMXX BWXMXX BYLMXX
Output Voltage
1.2V 1.5V 2.5V 3.0V 3.1V 1.2V 1.8V 3.2V 1.2V 3.3V 3.9V
Package
SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25
Operating Ambient Temperature 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
Note: 1. The first 3 places represent product code. It is assigned by AME such as BVP. 2. A bar on top of first letter represents Green Part such as BVP. 3. 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. 4. Please consult AME sales office or authorized Rep./Distributor for the availability of output voltage and package type.
4
Rev.A.01
AME
AME8818
n Absolute Maximum Ratings
Parameter
Input Voltage EN Voltage Output Current Output Voltage ESD Classification
Low Dropout 300mA CMOS Regulator
Symbol
VIN VEN IOUT VOUT
Maximum
-0.3 to 6 -0.3 to 6 PD / (V IN -V OUT) GND-0.3 to VIN +0.3 B*
Unit
V V mA V
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device. * HBM B:2000V~3999V
n Recommended Operating Conditions
Parameter
Ambient Temperature Range Junction Temperature Range Storage Temperature Range
Symbol
TA TJ TSTG
Rating
-40 to +85 -40 to +125 -65 to +150
Unit
o
C
Rev.A.01
5
AME
AME8818
n Thermal Information
Parameter Package Die Attach
Conductive Epoxy Non-Conductive Epoxy Conductive Epoxy Non-Conductive Epoxy Conductive Epoxy Internal Power Dissipation Non-Conductive Epoxy Maximum Junction Temperature Solder Iron (10Sec)** PD 400
o
Low Dropout 300mA CMOS Regulator
Symbol
Maximum
81
Unit
Thermal Resistance* (Junction to Case)
JC 140
o
C/W
260 JA 280
Thermal Resistance (Junction to Ambient)
SOT-25 SOT-23
400 mW
150 350
C C
o
* Measure JC on center of molding compound if IC has no tab. ** MIL-STD-202G 210F
6
Rev.A.01
AME
AME8818
n Electrical Specifications
VIN = VOUT(NOM) + 1V or VIN = 2.5V, if VOUT(NOM) <= 2.0V, IOUT = 1mA, VEN = VIN and COUT = CIN = 1F, Typical values at TA = 25oC, unless otherwise noted.
Low Dropout 300mA CMOS Regulator
Parameter
Input Voltage Output Voltage Accuracy Output Voltage Range Output Current Quiescent Current
Symbol
VIN V OUT,ACC VOUT IOUT IQ
Test Conditions
Min
(Note1)
Typ Max Units
5.5 2 4.5 V % V mA 70 (Note2) 370 280 230 500 mV 400 330 0.4 0.2 0.1
0.002 0.004 %/mA 0.01
-2 1.2 300 VI N = 5.5V, IOUT = 1mA VOUT O 2.0V
100
A
Dropout Voltage
VDROP
IOUT = 300mA
2.0V < VOUT O 2.5V 2.6V O VOUT O 3.0V VOUT U 3.1V
Output Voltage Line Regulation [(VOUT / VI N)x100%] / V OUT Output Voltage Load Regulation [(VOUT / V OUT) x 100%] /IOUT Output Current Limit Shutdown Current Power Supply Ripple Rejection Enable High (enabled) Enable Low (shutdown) Enable Pin Current (enabled) Thermal Shutdown Temperature
VIN(min) O VI NO VIN(max) REGLINE VIN(min) O VI NO VIN(max) VOUT+0.3VOVI NO VIN(max)
1.2VOV OUT<2.5V 2.5O VOUT<3.3V 3.3VOVOUT <4.5V
VOUTU 3.3V
-0.4 -0.2 -0.1
-0.003 -0.005 -0.015
0.1 0.03 0.01
%/V
REGLOAD
1mAOIOUT O 300mA
2.5VOVOUT<3.3V 1.2VOVOUT<2.5V
ILIM ISHDN PSRR VEN(HI) VEN(LO) IEN TSHDN TR S
VOUT = 0.8 x VOUT(NOM) VEN = 0V, VIN(min) O VI N O 5.5V f = 1KHz, IOUT = 100mA, Cout=1F(Note3) VIN(min) O VI N O 5.5V VIN(min) O VI N O 5.5V VEN = VI N Shutdown, temperature increasing Restore, temperature decreasing
330
500 5 60 10
mA A
dB VI N 0.4 V V
A
O
1.4 0 0.1 150 130
1
C
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. Note 3: For VOUT below 1.5V, the minimun input. Voltage is 3.0V.
Rev.A.01
7
AME
AME8818
n Detailed Description
The AME8818 is low-dropout, low quiescent-current linear regulator designed primarily for battery-powered applications. It is available with present output voltage ranging from 1.2V to 4.5V, and can supply loads up to 300mA.
Low Dropout 300mA CMOS Regulator
n Capacitor Selection and Regulator Stability
Use a 1F capacitor on the AME8818 input and a 1F capacitor on the OUT. Larger input capacitor values and lower ESR provide better supply noise rejection and line transient response. To reduce output noise and improve load transient voltage dips, use larger output capacitors up to 4.7F. For stable operation over the full temperature range with load currents up to 300mA, input and output capacitors should be a minimum of 1F by X7R. Note that some ceramic dielectrics large capacitance and ESR variation with temperature. With dielectrics such as Z5U and Y5V, it may be necessary to use 2.2F or more for up to 300mA load current to ensure stability at temperatures below -10oC. With X7R or X5R dielectrics, 1F is sufficient at all operating temperatures. These regulators are optimized for ceramic capacitors. Tantalum capacitors are not recommended. Bypass capacitor can be in between 0.1F~0.001F. A larger capacitor improves AC ripple rejection, but also make the output come up slowly.
n Shutdown Mode
The AME8818 has enable-control-pin. Drive EN low to shutdown OUT. Drive EN to shutdown the entire chip, reducing supply current to 5A. Connected EN to logic-high or IN for normal operation.
n Circuit Limit
The AME8818 contains current limiters which monitor and control the pass transistor's Gate voltage, limiting the guaranteed maximum output current to 330mA minimum. The output can be shorted to ground for an indefinite time without damaging the part.
n Thermal-Overload Protection
Thermal-overload protection limits total power dissipation in the AME8818. When the junction temperature arrive TJ = 160oC approximately, the thermal sensor signals the shutdown logic, turning off the pass transistor and allowing the IC to cool.
n PSRR and Operation from sources Other than Batteries
The AME8818 is designed to deliver low-dropout voltage and low quiescent currents in battery-powered system. Power-supply rejection ratio is 60dB (Typ.) at 1KHz. When operating from sources other than betteries, PSRR and transient response can be improved by increasing input, output and bypass capacitors(see PSRR vs Frequency Curve).
8
Rev.A.01
AME
AME8818
VOUT vs. Temperature
3.05 3.04 3.03 3.02
Low Dropout 300mA CMOS Regulator
Quiesent Current vs Temprature
100
VOUT = 3.0V
VOUT = 3.0V Quiesent Current (V)
80
V OUT (V)
IOUT =1mA
3.01 3.00 2.99 2.98 2.97 -50
60
I OUT=300mA
40
IOUT=300mA
IOUT=1mA
20
-25
0
+25
+50
o
+75
+100
+125
0 -50
-25
0
+25
+50
+75
+100
+125
Temperature ( C)
Temperature ( oC)
EN Pin Shutdown Threshold Voltage vs Temperature
1.50
750
Current Limit vs Input Voltage
EN Pin Shutdown Threshold Voltage (V)
VOUT = 1.2V
700
V OUT = 3.0V
Current Limit (mA)
-25 0 +25 +50
o
1.25
650 600 550 500 450 400
1.00
0.75
0.50
0.25 -50 +75 +100 +125
350 4.0
4.5
5.0
5.5
Temperature ( C)
Dropout Voltage vs Load Current
400 350
100
Input Voltage (V)
AME8818AEEV Power Supply Rejection Ratio
90
Dropout Voltage (mV)
VOUT = 3.0V IOUT = 300mA
IOUT=10mA IOUT =1mA
300 250 200 150 100 50 0
TA=125 C
O
80 70
VOUT = 1.2V CBYP = 0.1F
PSRR (dB)
60 50 40 30 20 10
IOUT =100mA
TA=25 C TA=-40 C
0 50 100 150 200 250 300
O
O
0
1K
10 K
100K
1M
Load Current (mA)
Rev.A.01
Frequency (H z)
9
AME
AME8818
AME8818AEEV Power Supply Rejection Ratio
100 90 80 70
Low Dropout 300mA CMOS Regulator
Line Transient Response
VOUT (50mV/DIV)
I OUT =10mA
VOUT = 3.3V CBYP = 0.1F
PSRR (dB)
60 50 40 30 20 10 0 1K 10K 100 K 1M
IOUT =1mA I OUT =100mA
VIN = 4V~5.5V VOUT = 3.3V IOUT = 1mA
V IN(2V/DIV)
Frequency (Hz)
TIME (100
Sec/DIV)
AME8818BEEV
Load Transient Response
VOUT (50mV/DIV) VOUT = 3.3V IOUT = 1mA~250mA
Start Up delay time
EN (5V/DIV) VOUT (2V/DIV)
IOUT (100mA/DIV)
VIN = 5V VOUT = 3.3V IOUT = 1mA
TIME (40Sec/DIV)
TIME (10Sec/DIV)
AME8818BEEV
EN Pin shutdown Response
EN (5V/DIV) V IN = 5V V OUT = 3.3V IOUT = 1mA
V OUT (2V/DIV)
TIME (20Sec/DIV)
10
Rev.A.01
AME
AME8818
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 Marking A M A M A M A M A M A M A M A M A M A M Year xxx0 xxx1 xxx2 xxx3 xxx4 xxx5 xxx6 xxx7 xxx8 xxx9
Low Dropout 300mA CMOS Regulator
A A A A A A A A A A
A A A A A A A A A A
X X X X X X X X X X
X X X X X X X X X X
n Tape and Reel Dimension
SOT-23 P
W AME PIN 1 AME
Carrier Tape, Number of Components Per Reel and Reel Size
Package SOT-23
Carrier Width (W) 8.00.1 mm
Pitch (P) 4.00.1 mm
Part Per Full Reel 3000pcs
Reel Size 1801 mm
Rev.A.01
11
AME
AME8818
n Tape and Reel Dimension
SOT-25 P
Low Dropout 300mA CMOS Regulator
W AME PIN 1 AME
Carrier Tape, Number of Components Per Reel and Reel Size
Package SOT-25
Carrier Width (W) 8.00.1 mm
Pitch (P) 4.00.1 mm
Part Per Full Reel 3000pcs
Reel Size 1801 mm
12
Rev.A.01
AME
AME8818
n Package Dimension
SOT-23
Top View D c1 Side View
Low Dropout 300mA CMOS Regulator
SYMBOLS A
MILLIMETERS MIN
0.90 0.00 0.30 2.70 1.40
INCHES MIN
0.0354 0.0000 0.0118 0.1063 0.0551
MAX
1.40 0.15 0.50 3.10 1.80
MAX
0.0551 0.0059 0.0197 0.1220 0.0709
E
H
A1 b D
L
PIN 1 e
E e H L
1.90 BSC 2.40 3.00
0.0748 BSC 0.0945 0.1181
Front View
0.35BSC 0
o
0.0138BSC
o
SOT-25
Top View D c1 Side View
A1
b
A
1
10
0
o
10
o
SYMBOLS A A1 b D
MILLIMETERS MIN
0.90 0.00 0.30 2.70 1.40
INCHES MIN
0.0354 0.0000 0.0118 0.1063 0.0551
MAX
1.30 0.15 0.55 3.10 1.80
MAX
0.0512 0.0059 0.0217 0.1220 0.0709
H
E PIN 1 L S1 e
E e H L
1.90 BSC 2.60 3.00
0.07480 BSC 0.10236 0.11811 0.0146BSC
o
Front View A
0.37BSC 0
o
1 S1
10
0
o
10
o
0.95BSC
0.0374BSC
b
Rev.A.01
A1
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 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. (c) AME, Inc. , February 2009 Document: 1261-DS8818-A.01
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

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