View AME8804AEEV_480724.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Analog Microelectronics, Inc.
AME8804
300mA CMOS LDO
n General Description
The AME8804 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-26 and SOT-25 packages are 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. The SOT-26 version also features a "Power Good" detector, which pulls low when the output is out of regulation. The AME8804 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
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 Power Good Detector (6 pin version only) Power-Saving Shutdown Mode Space-Saving SOT-26 and SOT-25 Adjustable Output Voltages Low Temperature Coefficient
n Applications
l l l l l l l
n Functional Block Diagram
IN
Overcurrent Shutdown
OUT
Instrumentation Portable Electronics Wireless Devices Cordless Phones PC Peripherals Battery Powered Widgets Electronic Scales
n Typical Application
IN C1 5V
AMP ADJ
OUT EN IN AME8804 PG G N D ADJ
Thermal Shutdown
OUT C2 R1 100p C3 2.2F R2
EN
V ref x110%
1F
PG
V ref x90%
V ref =1.215V
GND
V OUT = 1.215 (R1 +R2)/R2 C2 is unnecessary when R1 or R2 < 20K PG pin is only available in the SOT-26 package option
1
Analog Microelectronics, Inc.
AME8804
300mA CMOS LDO
n Pin Configuration
SOT-26 Top View
6 5 4
SOT-25 Top View
5 4
1
2
3
1. VIN 2. GND 3. EN
4. PG 5. ADJ 6. VOUT
1
2
3
1. VIN 2. GND 3. EN
4. ADJ 5. VOUT
n Ordering Information
Part Number
AME8804AEEY AME8804AEEV
Marking Output Voltage Package
AAUww AJCww Adjustable Adjustable SOT-26 SOT-25
Operating Temp. Range
-40OC to +85OC -40OC to +85OC
Please consult AME sales office or authorized Rep./Distributor for other package type availability.
2
Analog Microelectronics, Inc.
AME8804
300mA CMOS LDO
n Absolute Maximum Ratings
Parameter Input Voltage Output Current Input, Output Voltage ESD Classification Maximum 8 Unit V mA V
P D / (V IN - V O)
GND - 0.3 to V IN + 0.3 B
n Recommended Operating Conditions
Parameter Ambient Temperature Range Junction Temperature Rating - 40 to +85 - 40 to +125 Unit
o
C C
o
n Thermal Information
Parameter Thermal Resistance (ja) Internal Power Dissipation (P D ) ( T = 100oC) Thermal Resistance (ja) Internal Power Dissipation (P D ) ( T = 100oC) Maximum Junction Temperature Maximum Lead Temperature ( 10 Sec) SOT-25 SOT-25 SOT-26 SOT-26 Maximum 260 380 260 380 150 300
o o
Unit C/W mW C/W mW
o
C C
o
Caution: Stress above the listed absolute rating may cause permanent damage to the device
3
Analog Microelectronics, Inc.
AME8804
300mA CMOS LDO
n Electrical Specifications
TA = 250C VIN=5V unless otherwise noted
Parameter Input Voltage Output Voltage Accuracy Symbol V IN VO IO=300mA V O=V ONOM -2.0% IO=1mA 1.5V1.2V V O>1.2V V O<0.8V IO=0mA IO=1mA to 300mA IO=5mA V IN =V O+1 to V O+2 V O < 2.0V V O >= 2.0V 0.02 0.2 150 30 30 50 20 15 30 1 1.203 1.215 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 o o
Units V %
Dropout Voltage
V DROPOUT
mV
IO=1mA to 300mA
C C
ppm/ oC
Output Voltage Noise ADJ Input Bias Current ADJ Reference Voltage EN Input Threshold
eN IADJ V REF V EH V EL
EN Input Bias Current Shutdown Supply Current Shutdown Output Voltage Output Under Voltage Output Over Voltage PG Leakage Current PG Voltage Rating PG Voltage Low Note1:V IN(min)=V OUT+V DROPOUT
IEH IEL ISD V O, SD V UV V OV ILC V PG V OL
4
Analog Microelectronics, Inc.
AME8804
300mA CMOS LDO
n Detailed Description
The AME8804 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 AME8804 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over-stress. The AME8804 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.
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 AME8804 (SOT-26 package only) 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 AME8804 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. 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.
5
Analog Microelectronics, Inc.
AME8804
300mA CMOS LDO
Ground Current vs. Input Voltage
45 40
Load Step ( 1mA-300mA)
Vo(5mV/DIV) C L =2.2F C I N =2.2F
Ground Current (A)
35 30 25 20 15 10 5 0 0 1 2 3 4
85 O C
Output
25 O C IL(200mA/DIV)
IL o a d
5
6
7
8
0 TIME( 20mS/DIV)
Input Voltage (V)
Power Supply Rejection Ratio
-10 -20 PSRR (dB) -30 -40 -50 -60 -70 -80 1.0E+01
100A 100A 1mA 100mA 10mA Output (1V/DIV) C L =2.2F Tantalum C B Y P =0 100mA Enable (2V/DIV)
0
Chip Enable Transient Response
C L =2F R L =10
0
0 TIME ( 1mS/DIV)
1.0E+03
1.0E+05
1.0E+07
Frequency (Hz)
Drop Out Voltage vs Output Voltage
300
250
Drop Out Voltage vs Load Current
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
Drop Out Voltage (mV)
Dropout 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
200
150
100
50 0 2.5 2.75 3 3.25 3.5 3.75 4
50
0 0 50 100 150 200 250 300
Output Voltage (V) 6
Load Current (mA)
Analog Microelectronics, Inc.
AME8804
Noise Measurement
300mA CMOS LDO
Safe Operating Area
Output Current (mA)
300 SOT-25
SOT-26
Vo (1mV/ DIV)
100
10 0.1 1.0 8.0
Input-Output Voltage Differential (V)
TIME (20mS/DIV)
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
VOUT (1V/DIV)
VOUT (1V/DIV)
0
0 TIME (2mS/DIV) TIME (0.5Sec/DIV)
0
Current Limit Response
IOUT (200mA/DIV) R L O A D =3.3
Line Transient Response
VIN(1V/DIV)
0 VOUT (10mV/DIV)
C L O A D =2.2F IL O A D = 1 m A V O U T D C =3.3V V I N D C =4.5V
VOUT (1V/DIV)
0 TIME (2mS/DIV)
TIME (200mS/DIV)
7
Analog Microelectronics, Inc.
AME8804
300mA CMOS LDO
10000 1000 100
Stability vs. ESR vs I LOAD
Unstable Region
10000 1000
Stability vs. ESR vs I LOAD
Unstable Region
C L =1F
100
C L =2F Stable Region
ESR ()
10 1
Stable Region
ESR ()
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
10 1 0.1
Stable Region
0.01
Untested Region
0.01 0 50
0.001 200 0 50
Untested Region
100
150
100
150
200
ILOAD (mA)
ILOAD (mA)
8
Analog Microelectronics, Inc.
AME8804
300mA CMOS LDO
n External Resistor Divider Table
R1(kohm) Vout 1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70 1.75 1.80 1.85 1.90 1.95 2.00 2.05 2.10 2.15 2.20 2.25 2.30 2.35 2.40 2.45 2.50 2.55 2.60 2.65 2.70 2.75 2.80 2.85 2.90 2.95 3.00 3.05 3.10 1.00 2.00 5.00 10.00 20.00 50.00 100.00 200.00 R2(kohm)=(1.215*R1(kohm))/(Vout-1.215) 71.47 45.00 32.84 25.85 21.32 18.13 15.78 13.97 12.53 11.36 10.38 9.57 8.87 8.27 7.74 7.28 6.86 6.50 6.17 5.87 5.60 5.35 5.13 4.92 4.73 4.55 4.39 4.23 4.09 3.96 3.83 3.72 3.61 3.50 3.40 3.31 3.22 142.94 90.00 65.68 51.70 42.63 36.27 31.56 27.93 25.05 22.71 20.77 19.13 17.74 16.53 15.48 14.55 13.73 12.99 12.34 11.74 11.20 10.70 10.25 9.84 9.46 9.10 8.77 8.47 8.18 7.92 7.67 7.43 7.21 7.00 6.81 6.62 6.45 285.88 180.00 131.35 103.40 85.26 72.54 63.12 55.86 50.10 45.42 41.54 38.27 35.47 33.06 30.96 29.10 27.46 25.99 24.67 23.48 22.40 21.41 20.51 19.68 18.91 18.20 17.55 16.93 16.36 15.83 15.33 14.86 14.42 14.01 13.61 13.24 12.89 714.71 450.00 328.38 258.51 213.16 181.34 157.79 139.66 125.26 113.55 103.85 95.67 88.69 82.65 77.39 72.75 68.64 64.97 61.68 58.70 55.99 53.52 51.27 49.19 47.28 45.51 43.86 42.33 40.91 39.58 38.33 37.16 36.05 35.01 34.03 33.11 32.23 500.00 1000.00
14.29 9.00 6.57 5.17 4.26 3.63 3.16 2.79 2.51 2.27 2.08 1.91 1.77 1.65 1.55 1.46 1.37 1.30 1.23 1.17 1.12 1.07 1.03 0.98 0.95 0.91 0.88 0.85 0.82 0.79 0.77 0.74 0.72 0.70 0.68 0.66 0.64
28.59 18.00 13.14 10.34 8.53 7.25 6.31 5.59 5.01 4.54 4.15 3.83 3.55 3.31 3.10 2.91 2.75 2.60 2.47 2.35 2.24 2.14 2.05 1.97 1.89 1.82 1.75 1.69 1.64 1.58 1.53 1.49 1.44 1.40 1.36 1.32 1.29
517.02 426.32 362.69 315.58 279.31 250.52 227.10 207.69 191.34 177.37 165.31 154.78 145.51 137.29 129.95 123.35 117.39 111.98 107.05 102.53 98.38 94.55 91.01 87.73 84.67 81.82 79.15 76.66 74.31 72.11 70.03 68.07 66.21 64.46
852.63 725.37 631.17 558.62 501.03 454.21 415.38 382.68 354.74 330.61 309.55 291.02 274.58 259.89 246.70 234.78 223.96 214.10 205.06 196.76 189.11 182.02 175.45 169.34 163.64 158.31 153.31 148.62 144.21 140.06 136.13 132.43 128.91
826.53 773.89 727.54 686.44 649.73 616.75 586.96 559.91 535.24 512.66 491.90 472.76 455.06 438.63 423.34 409.09 395.77 383.28 371.56 360.53 350.14 340.34 331.06 322.28
877.26 846.69 818.18 791.53 766.56 743.12 721.07 700.29 680.67 662.13 644.56
9
Analog Microelectronics, Inc.
AME8804
300mA CMOS LDO
n External Resistor Divider Table (contd.)
R1(kohm) Vout 3.15 3.20 3.25 3.30 3.35 3.40 3.45 3.50 3.55 3.60 3.65 3.70 3.75 3.80 3.85 3.90 3.95 4.00 4.05 4.10 4.15 4.20 4.25 4.30 4.35 4.40 4.45 4.50 4.55 4.60 4.65 4.70 4.75 4.80 4.85 4.90 4.95 5.00 1.00 0.63 0.61 0.60 0.58 0.57 0.56 0.54 0.53 0.52 0.51 0.50 0.49 0.48 0.47 0.46 0.45 0.44 0.44 0.43 0.42 0.41 0.41 0.40 0.39 0.39 0.38 0.38 0.37 0.36 0.36 0.35 0.35 0.34 0.34 0.33 0.33 0.33 0.32 2.00 1.26 1.22 1.19 1.17 1.14 1.11 1.09 1.06 1.04 1.02 1.00 0.98 0.96 0.94 0.92 0.91 0.89 0.87 0.86 0.84 0.83 0.81 0.80 0.79 0.78 0.76 0.75 0.74 0.73 0.72 0.71 0.70 0.69 0.68 0.67 0.66 0.65 0.64 5.00 10.00 20.00 50.00 100.00 200.00 R2(kohm)=(1.215*R1(kohm))/(Vout-1.215) 3.14 6.28 12.56 31.40 62.79 125.58 3.06 6.12 12.24 30.60 61.21 122.42 2.99 5.97 11.94 29.85 59.71 119.41 2.91 5.83 11.65 29.14 58.27 116.55 2.85 5.69 11.38 28.45 56.91 113.82 2.78 5.56 11.12 27.80 55.61 111.21 2.72 5.44 10.87 27.18 54.36 108.72 2.66 5.32 10.63 26.59 53.17 106.35 2.60 5.20 10.41 26.02 52.03 104.07 2.55 5.09 10.19 25.47 50.94 101.89 2.49 4.99 9.98 24.95 49.90 99.79 2.44 4.89 9.78 24.45 48.89 97.79 2.40 4.79 9.59 23.96 47.93 95.86 2.35 4.70 9.40 23.50 47.00 94.00 2.31 4.61 9.22 23.06 46.11 92.22 2.26 4.53 9.05 22.63 45.25 90.50 2.22 4.44 8.88 22.21 44.42 88.85 2.18 4.36 8.73 21.81 43.63 87.25 2.14 4.29 8.57 21.43 42.86 85.71 2.11 4.21 8.42 21.06 42.11 84.23 2.07 4.14 8.28 20.70 41.40 82.79 2.04 4.07 8.14 20.35 40.70 81.41 2.00 4.00 8.01 20.02 40.03 80.07 1.97 3.94 7.88 19.69 39.38 78.77 1.94 3.88 7.75 19.38 38.76 77.51 1.91 3.81 7.63 19.07 38.15 76.30 1.88 3.76 7.51 18.78 37.56 75.12 1.85 3.70 7.40 18.49 36.99 73.97 1.82 3.64 7.29 18.22 36.43 72.86 1.79 3.59 7.18 17.95 35.89 71.79 1.77 3.54 7.07 17.69 35.37 70.74 1.74 3.49 6.97 17.43 34.86 69.73 1.72 3.44 6.87 17.19 34.37 68.74 1.69 3.39 6.78 16.95 33.89 67.78 1.67 3.34 6.69 16.71 33.43 66.85 1.65 3.30 6.59 16.49 32.97 65.94 1.63 3.25 6.51 16.27 32.53 65.06 1.61 3.21 6.42 16.05 32.10 64.20 500.00 1000.00 313.95 306.05 298.53 291.37 284.54 278.03 271.81 265.86 260.17 254.72 249.49 244.47 239.64 235.01 230.55 226.26 222.12 218.13 214.29 210.57 206.98 203.52 200.16 196.92 193.78 190.74 187.79 184.93 182.16 179.47 176.86 174.32 171.85 169.46 167.13 164.86 162.65 160.50 627.91 612.09 597.05 582.73 569.09 556.06 543.62 531.73 520.34 509.43 498.97 488.93 479.29 470.02 461.10 452.51 444.24 436.27 428.57 421.14 413.97 407.04 400.33 393.84 387.56 381.48 375.58 369.86 364.32 358.94 353.71 348.64 343.71 338.91 334.25 329.72 325.30 321.00
Note: Small load (greater than 2 mA) is necessary as R1 or R2 is larger than 50 Kohm. Otherwise, output voltage probably cannot be pulled down to 0 V on disable mode.
10
Analog Microelectronics, Inc.
AME8804
300mA CMOS LDO
n Package Dimension
SOT-26
M ILLIM ETERS M IN M AX 1.00 1.40 0.00 0.70 0.35 0.08 2.70 1.40 2.60 0.35 0 0.85
SYM BOLS A A1 A2 b C D E e H L 1 S1
INCHES M IN M AX 0.0394 0.0551 0.0000 0.0276 0.0138 0.0031 0.1063 0.0551 0.1024 0.0138 0 0.0335
0.15 1.25 0.50 0.25 3.10 1.80 3.00 9 1.05
0.0591 0.0492 0.0197 0.0098 0.1220 0.0709 0.1181 9 0.0413
1.90 BSC
0.0748 BSC
SOT-25
SYMBOLS A A1 A2 b C D E e H L 1 S1 MILLIMETERS MIN MAX 1.00 1.45 0.00 0.70 0.35 0.08 2.70 1.40 2.60 0.30 0 0.85
INCHES MIN MAX 0.0394 0.0571 0.0000 0.0276 0.0138 0.0031 0.1063 0.0591 0.0492 0.0217 0.0098 0.1220
0.15 1.25 0.55 0.25 3.10 1.80 1.90 BSC 3.00 10 1.05
0.0551 0.0709 0.07480 BSC 0.1024 0.0118 0 0.0335
0.1181 10 0.0413
11
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-DS8804-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

▲Up To Search▲

Price & Availability of AME8804AEEV

	To Download AME8804AEEV Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .