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Analog Microelectronics, Inc.
AME8803/8814
300mA CMOS LDO
n General Description
The AME8803 family of positive, linear regulators feature low quiescent current (30A typ.) with low dropout voltage, making them ideal for battery applications. The space-saving SOT-23-6 package is attractive for "Pocket" and "Hand Held" applications. These rugged devices have both Thermal Shutdown, and Current Fold-back to prevent device failure under the "Worst" of operating conditions. An additional feature is a "Power Good" detector, which pulls low when the output is out of regulation. In applications requiring a low noise, regulated supply, place a 1000pF capacitor between Bypass and ground. The AME8803 is stable with an output capacitance of 2.2F or greater.
n Features
l l l l l l l l l l l l l
Very Low Dropout Voltage Guaranteed 300mA Output Accurate to within 1.5% 30A Quiescent Current Over-Temperature Shutdown Current Limiting Short Circuit Current Fold-back Noise Reduction Bypass Capacitor Power Good Detector Power-Saving Shutdown Mode Space-Saving SOT-26 (SOT-23-6) Factory Pre-set Output Voltages Low Temperature Coefficient
n Applications
l l l
n Functional Block Diagram
IN
Overcurrent Shutdown
l l l
OUT
l
Instrumentation Portable Electronics Wireless Devices Cordless Phones PC Peripherals Battery Powered Widgets Electronic Scales
n Typical Application
IN
EN IN BYP GND PG OUT
Thermal Shutdown
EN BYP PG
V ref
AME8803
OUT
R1
x110%
AMP
C1 5V 1F
C2 1nF
C3 2.2F
V ref x90%
R2 V ref =1.215V GND
1
Analog Microelectronics, Inc.
AME8803/8814
300mA CMOS LDO
n Pin Configuration
AME8803 SOT-26 Top View
6 5 4
AME8814 SOT-26 W Top View
6 5 4
1
2
3
1. VIN 2. GND 3. EN
4. PG 5. BYP 6. VOUT
1
2
3
1. EN 2. GND 3. BYP
4. VOUT 5. GND 6. VIN
n Ordering Information
Part Number AME8803AEEY AME8803BEEY AME8803CEEY AME8803DEEY AME8803EEEY AME8803FEEY AME8803GEEY AME8803HEEY AME8803IEEY AME8803JEEY AME8803KEEY AME8803LEEY AME8803MEEY AME8803NEEY AME8803OEEY Marking AAPww AAQww AARww AASww AATww ABQww ACHww AGKww AEQww AGSww AHUww AJKww AJLww ALAww ALBww Output Package 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 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 Operating Temp. -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
2
Analog Microelectronics, Inc.
AME8803/8814
300mA CMOS LDO
n Ordering Information
Part Number AME8814AEEY AME8814BEEY AME8814CEEY AME8814DEEY AME8814EEEY AME8814FEEY AME8814GEEY AME8814HEEY AME8814IEEY AME8814JEEY AME8814KEEY AME8814LEEY AME8814MEEY AME8814NEEY AME8814OEEY Marking AIEww AIFww AIGww AIHww AIIww AIJww AIKww AILww AIMww AINww AIOww AJDww AJEww AKYww AKZww Output Package Operating Temp. 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 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 SOT-26 -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
Please consult AME sales office or authorized Rep./Distributor for other output voltage and package type availability.
3
Analog Microelectronics, Inc.
AME8803/8814
300mA CMOS LDO
n Absolute M aximum Ratings:
Parameter Input Voltage Output Current Output Voltage ESD Classification Maximum 8 P D / (V IN - V O ) GND - 0.3 to V IN + 0.3 B Unit V mA V
n Recommended operating Conditions:
Parameter Ambient Temperature Range Junction Temperature Rating -40 to +85 -40 to +125 Unit
o
C C
o
n T hermal Information
Parameter Thermal Resistance (ja) Thermal Resistance (ja) Internal Power Dissipation (P D ) ( T = 100oC) Internal Power Dissipation (P D ) ( T = 100oC) Maximum Junction Temperature Maximum Lead Temperature ( 10 Sec) Package SOT-26 Maximum 260
o
Unit
C/W
SOT-26W
260
SOT-26
380 mW
SOT-26W
380 150
o
C
300
4
Caution: Stress above the listed absolute rating may cause permanent damage to the device
Analog Microelectronics, Inc.
AME8803/8814
300mA CMOS LDO
n Electrical Specifications
TA = 25 o C unless otherwise noted
Parameter Input Voltage Output Voltage Accuracy Symbol V IN VO IO =300mA V O=V ONOM -2.0% IO=1mA 1.2V1.2V V O>1.2V V O<0.8V IO=0mA IO=1mA to 300mA IO=1mA V IN =V O+1 to V O+2 V O < 2.0V 2.0V<=V O < 4.0V 4.0V <= Vo Load Regulation Over Temerature Shutdown Over Temerature Hysterisis V O Temperature Coefficient REGLOAD OTS OTH TC f=1kHz Power Supply Rejection PSRR IO =100mA CO=2.2F f=10Hz to 100kHz IO=10mA f=10kHz f=100kHz Co=2.2F 2.0 0 IO=1mA to 300mA -0.15 -0.1 -0.4 -1 0.02 0.2 0.2 150 30 30 50 20 15 30 Vin 0.4 0.1 0.5 0.5 0 1 0.4 85 75 115 125 1 7 0.4 %V O(NOM) Vrms V V A A A V dB 300 300 450 150 30 35 0.15 0.1 0.4 1 300 50 See chart Test Condition Min Note 1 -1.5 Typ Max 7 1.5 1300 400 300 mA mA mA A A % % % %
o o
Units V %
Dropout Voltage
V DROPOUT
mV
Line Regulation
REGLINE
C C
ppm/ oC
Output Voltage Noise
eN V EH V EL IEH IEL
EN Input Threshold
V IN =2.7V to 7V V IN =2.7V to 7V V EN =V IN , V IN =2.7V to 7V V EN =0V, V IN =2.7V to 7V V IN =5V, V O=0V, V EN EN Input Bias Current Shutdown Supply Current Shutdown Output Voltage Output Under Voltage
ISD V O,SD V UV
1.2V <= Vo < 2.5V 2.5V <=Vo <= 5.0V 1.2V <= Vo < 2.5V V PG =7V V O in regulation ISINK=0.4mA
Output Over Voltage PG Leakage Current PG Voltage Rating PG Voltage Low Note1:V IN(min)=V OUT+V DROPOUT
V OV ILC V PG V OL
%V O(NOM) A V V
5
Analog Microelectronics, Inc.
AME8803/8814
300mA CMOS LDO
n Detailed Description
The AME8803 family of CMOS regulators contain a PMOS pass transistor, voltage reference, error amplifier, over-current protection, thermal shutdown, and Power Good detection circuitry. 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 300mA. During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 120oC. The AME8803 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over-stress. The AME8803 also incorporates current foldback to reduce power dissipation when the output is short circuited. This feature becomes active when the output drops below 0.8volts, and reduces the current flow by 65%. Full current is restored when the voltage exceeds 0.8 volts. A third capacitor can be connected between the BYPASS pin and GND. This capacitor can be a low cost Polyester Film variety between the value of 0.001 ~ 0.01F. A larger capacitor improves the AC ripple rejection, but also makes the output come up slowly. This "Soft" turn-on is desirable in some applications to limit turn-on surges. 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.
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 1A. This pin behaves much like an electronic switch.
n Power Good
The AME8803 includes the Power Good feature. Normally, Pin 4 is "Floating", however, when the output is not within 10% of the specified voltage, it pulls low. This can occur under the following conditions: 1) 2) 3) 4) Input Voltage too low. During Over-Temperature. During Over-Current. If output is pulled up.
n External Capacitors
The AME8803 is stable with an output capacitor to ground of 2.2F 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 0.1F ceramic capacitor with a 10F 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 0.1F to have a beneficial effect.
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Analog Microelectronics, Inc.
AME8803/8814
300mA CMOS LDO
Ground Current vs. Input Voltage
45
Load Step ( 1mA-300mA)
Vo(5mV/DIV) C L =2.2F C I N =2.2F
40
Output
Ground Current (A)
35 30 25
85 O C
15 10 5 0 0 1 2 3 4 5 6 7 8
IL(200mA/DIV)
20
25 O C
IL o a d
0 TIME( 20mS/DIV) Input Voltage (V)
Chip Enable Transient Response
Enable (2V/DIV) Enable (2V/DIV)
Chip Enable Transient Response
C L =2F R L =10 C B Y P =1000pF
0
C L =2F R L =10
0
Output (1V/DIV)
0 TIME ( 1mS/DIV)
Output (1V/DIV)
0 TIME ( 1mS/DIV)
Drop Out Voltage vs Output Voltage
300
Drop Out Voltage vs Load Current
250
Drop Out Voltage (mV)
250 200 150 100
IL O A D = 1 0 0 m A IL O A D= 3 0 0 m A IL O A D = 2 0 0 m A
Dropout Voltage (mV)
200
150
Top to bottom V O U T =2.5V V O U T =2.8V V O U T =3.0V V O U T =3.3V V O U T =3.5V V O U T =3.8V
100
50
50 0 2.5 2.75 3 3.25 3.5 3.75 4
0 0 50 100 150 200 250 300
Output Voltage (V)
Load Current (mA)
7
Analog Microelectronics, Inc.
AME8803/8814
300mA CMOS LDO
Power Supply Rejection Ratio
-20 -30 -40
C L =2.2F Tantalum C B Y P =1000pF 100mA 1mA 100mA
Power Supply Rejection Ratio
0 -10 -20
C L =2.2F Tantalum C B Y P =0 100mA
PSRR (dB)
PSRR (dB)
-30 -40 -50 -60
100mA 10mA
-50 -60 -70 -80 1.0E+01
10mA 100A 100A
-70 -80 1.0E+01
100 A
100 A
1mA
1.0E+03
1.0E+05
1.0E+07
1.0E+03
1.0E+05
1.0E+07
Frequency (Hz)
Frequency (Hz)
Power Supply Rejection Ratio
-10 -20 -30 -10
Power Supply Rejection Ratio
-20 -30
C B Y P = 100 pF C L = 10 F Tantalum I L = 100 mA
C BYP = 0
C BYP = 0 C L = 5.6 F Ceramic I L = 100 mA C B Y P = 100 pF
PSRR ( dB)
PSRR ( dB)
-40 -50 -60 -70
-40 -50 -60 -70
C B Y P = 1 nF
C B Y P = 1 nF C B Y P = 10 nF
C B Y P = 10 nF -80 1.0E+01 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.0E+06
-80 1.0E+01
1.0E+02
1.0E+03
1.0E+04
1.0E+05
Frequency (Hz)
Frequency (Hz)
Short Circuit Response
ILOAD (400mA/DIV) R L O A D =100 R S H O R T =0.1
Overtemperature Shutdown
I OUT (200mA/DIV)
0
R L O A D =6.6
0
VOUT (1V/DIV)
VOUT (1V/DIV)
0 TIME (2mS/DIV) TIME (0.5Sec/DIV)
0
8
Analog Microelectronics, Inc.
AME8803/8814
300mA CMOS LDO
Noise Measurement
Current Limit Response
IOUT (200mA/DIV) R L O A D =3.3
0
VOUT (1V/DIV)
0 TIME (2mS/DIV)
TIME (20mS/DIV)
Transient Line Response Safe Operating Area
VIN (1V/DIV)
Output Current (mA)
300 SOT-23-5 100
VIN DC = 5.0V CL = 2.2F
VO (1mV/DIV)
10 0.1 1.0 8.0
Vo (1mV/ DIV)
CL = 2.2F NO FILTER
TIME (2mS/DIV)
Input-Output Voltage Differential (V)
9
Analog Microelectronics, Inc.
AME8803/8814
300mA CMOS LDO
10000 1000 100
Stability vs. ESR vs I LOAD
10000
Stability vs. ESR vs I LOAD
Unstable Region
Unstable Region
1000
C L =1F
100
C L =2F Stable Region
ESR ()
ESR ()
10 1
Stable Region
10 1 0.1
0.1
Untested Region
0.01 0 50 100 150 200
0.01 0 50
Untested Region
100
150
200
ILOAD (mA)
ILOAD (mA)
Stability vs. ESR vs I LOAD
10000
Unstable Region
Stability vs. ESR vs I LOAD
10000
Unstable Region
1000 100
C L =3F
1000 100
C L =10F Stable Region
ESR ()
ESR ()
10 1 0.1 0.01
10 1 0.1
Stable Region
0.01 0 50
Untested Region
0.001 200 0 50
Untested Region
100
150
100
150
200
ILOAD (mA)
ILOAD (mA)
10
Analog Microelectronics, Inc.
AME8803/8814
300mA CMOS LDO
Quiescent Current vs. Temp.
35 0.58 0.56
Load Regulation vs. Temp.
Quiescent Current @ 5V (uA)
Load Regulation (%)
-45 -5 25 55 85
34 33 32 31 30 29 28 27
0.54 0.52 0.50 0.48 0.46 0.44 0.42 0.40 -45 -5 25 55 85
Temperature (0C)
Temperature (0C)
Shut Down Current vs. Temp.
Shut Down Current (uA)
0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 -45 -5 25 55 85
EN pin LO bias Current vs. Temp.
EN pin LO bias current (uA)
-0.20 -0.25 -0.30 -0.35 -0.40 -0.45 -0.50 -45 -5 25 55 85
1.0
Temperature ( C)
0
Temperature (0C)
Dropout Voltage vs. Temp.
220 0.45
PG VOL vs. Temp.
0.40 0.35 0.30 0.25 0.20 0.15
Dropout Voltage @ 300mA (mV)
200 190 180 170 160 150 -45 -5 25 55
0
PG VOL @ 0.4mA (V)
210
85
-45
-5
25
55
85
Temperature ( C)
Temperature (0C)
11
Analog Microelectronics, Inc.
AME8803/8814
300mA CMOS LDO
n Package Dimension
SOT-26
SYM BOLS A A1 A2 b C D E e H L 1 S1 M ILLIM ETERS M IN M AX 1.00 1.40 0.00 0.15 0.70 1.25 0.35 0.50 0.08 0.25 2.70 3.10 1.40 1.80 1.90 BSC 2.60 0.35 0 0.85
INCHES M IN M AX 0.0394 0.0551 0.0000 0.0591 0.0276 0.0492 0.0138 0.0197 0.0031 0.0098 0.1063 0.1220 0.0551 0.0709 0.0748 BSC 0.1024 0.0138 0 0.0335
3.00 9 1.05
0.1181 9 0.0413
SOT-26 (Wide)
SY MBOLS A A1 A2 b C D E e H L 1 S1
MILLIMETERS MIN MAX 1.00 1.30 0.00 0.10 1.00 1.40 0.35 0.50 0.10 0.25 2.70 3.10 1.60 2.00 2.60 3.00 0.37 1 9 0.85 1.05
INCHES MIN MAX 0.0937 0.0512 0.000 0.0039 0.0937 0.0551 0.0138 0.0197 0.0039 0.0098 0.1063 0.1220 0.0630 0.0787 0.1024 0.1181 0.0146 1 9 0.0335 0.0413
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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 lifesupport 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. (c) Analog Microelectronics, Inc., August 2001 Document: 2006-DS8803/8814-E
Corporate Headquarters
Analog Microelectronics, Inc.
3100 De La Cruz Blvd. Suite 201 Santa Clara, CA. 95054-2046 Tel : (408) 988-2388 Fax: (408) 988-2489
Asia Pacific Headquarters
AME, Inc.
2F, 187 Kang-Chien Road, Nei-Hu District Taipei 114, Taiwan, R.O.C. Tel : 886 2 2627-8687 Fax : 886 2 2659-2989

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