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AME, Inc.
AME8838
n General Description
The AME8838 family of positive, linear regulators feature low quiescent current (30A typ.) low dropout voltage and excellent PSRR, thus making them ideal for Telecommunications and other battery applications. The ultra-small SC-70-5, SC-70-4 & SOT-23 packages are attractive for "Pocket" and "Hand Held" applications. These rugged devices have both Thermal Shutdown and Current limit to prevent device failure under the "Worst" operating conditions. The AME8838 is stable with an output capacitance of 1F or larger.
High PSRR, 150mA CMOS LDO
n Functional Block Diagram
IN
Overcurrent Shutdown
OUT
Thermal Shutdown
EN R1 AMP
+
n Features
R2
l Very Low Dropout Voltage l Guaranteed 150mA Output l 30A Quiescent Current l Over-Temperature Shutdown l Current Limiting l Excellent PSRR (Typ. 65dB) l Power-Saving Shutdown Mode l Ultra-small SC-70-5, SC-70-4 & SOT-23 Packages l Factory Pre-set Output Voltages l Low Temperature Coefficient l Input Voltage Range (2V - 6V) l All AME's lead free Products Meet RoHS Standard.
C1 1F
Vref GND
n Typical Application
IN IN
EN IN
OUT
AME8838 OUT
GND
C2 1F
n Applications
l Cellular Phones l Instrumentation l Portable Electronics l Wireless Devices l Cordless Phones l PC Peripherals l Battery Powered Widgets l Cameras l Telecommunications
Rev.E.04 1
AME, Inc.
AME8838
n Pin Configuration
SC-70-5 Top View
5 4
High PSRR, 150mA CMOS LDO
SC-70-5 Top View AME8838AEIV 1. IN 2. GND
5 4
AME8838BEIV 1. OUT 2. GND
AME8838
3. EN 4. NC 5. OUT
AME8838
3. IN 4. EN 5. NC
1
2
3
1
2
3
* Die Attach: Conductive Epoxy SOT-23 Top View
3
* Die Attach: Conductive Epoxy SC-70-4 Top View
AME8838AEET 1. GND 2. OUT
4
3
AME8838AEIU 1. EN 2. GND
AME8838
3. IN * Die Attach:
AME8838
1 2
3. OUT 4. IN
1
2
Non-Conductive Epoxy
* Die Attach: Conductive Epoxy
2
Rev.E.04
AME, Inc.
AME8838
n Pin Description
AME8838AEIV SC-70-5
High PSRR, 150mA CMOS LDO
Pin Number
1 2 3 4 5
Pin Name
IN GND EN NC OUT
Pin Description
Input voltage pin. It should be decoupled with 1F or greater capacitor. Ground connection pin. Enable pin. When pulled low, the PMOS pass transistor turns off, current consuming less than 1A. No Connection. LDO voltage regulator output pin. It should be decoupled with a 1F or greater value low ESR ceramic capacitor.
AME8838BEIV SC-70-5
Pin Number
1 2 3
Pin Name
OUT GND IN
Pin Description
LDO voltage regulator output pin. It should be decoupled with a 1F or greater value low ESR ceramic capacitor. Ground connection pin. Input voltage pin. It should be decoupled with 1F or greater capacitor. Enable pin. When pulled low, the PMOS pass transistor turns off, current consuming less than 1A. No Connection.
4 5
EN NC
AME8838AEET SOT-23
Pin Number
1 2
Pin Name
GND OUT Ground connection pin.
Pin Description
LDO voltage regulator output pin. It should be decoupled with a 1F or greater value low ESR ceramic capacitor. Input voltage pin. It should be decoupled with 1F or greater capacitor.
3
IN
Rev.E.04
3
AME, Inc.
AME8838
n Pin Description
AME8838AEIU SC-70-4
High PSRR, 150mA CMOS LDO
Pin Number
1 2 3
Pin Name
EN GND OUT
Pin Description
Enable pin. When pulled low, the PMOS pass transistor turns off, current consuming less than 1A. Ground connection pin. LDO voltage regulator output pin. It should be decoupled with a 1F or greater value low ESR ceramic capacitor. Input voltage pin. It should be decoupled with 1F or greater capacitor.
4
IN
4
Rev.E.04
AME, Inc.
AME8838
n Ordering Information AME8838 x x x x xxx x
Special Feature Output Voltage Number of Pins Package Type Operating Ambient Temperature Range Pin Configuration
Operating Ambient Temperature Range E: -40OC to 85OC Number of Pins T: 3 V: 5 U: 4
High PSRR, 150mA CMOS LDO
Pin Configuration A: 1. IN (SC-70-5) 2. GND 3. EN 4. NC 5. OUT B: 1. OUT 2. GND 3. IN 4. EN 5. NC A: 1. EN 2. GND 3. OUT 4. IN
Package Type E: SOT-2X I: SC-70
Output Voltage 120: 150: 180: 250: 270: 285: 300: 310: 330: V=1.2V V=1.5V V=1.8V V=2.5V V=2.7V V=2.85V V=3.0V V=3.1V V=3.3V
Special Feature
Y: Lead free & Low profile Z: Lead free
(SC-70-5)
(SC-70-4)
A: 1. GND (SOT-23) 2. OUT (TSOT-23) 3. IN
Rev.E.04
5
AME, Inc.
AME8838
n Ordering Information
Part Number
AME8838AEIU180Z AME8838AEIU270Z AME8838AEIU280Z AME8838AEIV150Z AME8838AEIV180Z AME8838AEIV250Z AME8838AEIV270Z AME8838AEIV280Z AME8838AEIV285Z AME8838AEIV300Z AME8838AEIV310Z AME8838AEIV330Z AME8838AEET180Z
High PSRR, 150mA CMOS LDO
Marking*
BLFw BLGw BLHw BFDw BELw BFEw BHSw BFFw BHVw BFGw BHTw BEKw BFPww
Output Voltage
1.8V 2.7V 2.8V 1.5V 1.8V 2.5V 2.7V 2.8V 2.85V 3.0V 3.1V 3.3V 1.8V
Package
SC-70-4 SC-70-4 SC-70-4 SC-70-5 SC-70-5 SC-70-5 SC-70-5 SC-70-5 SC-70-5 SC-70-5 SC-70-5 SC-70-5 SOT-23
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 - 40oC to 85oC - 40oC to 85oC
Note: w & ww represent the date code and pls refer to Date Code Rule page on Package Dimension. * A line on top of the first letter represents lead free plating such as BLFw. Please consult AME sales office or authorized Rep./Distributor for the availability of package type.
6
Rev.E.04
AME, Inc.
AME8838
n Absolute Maximum Ratings
Parameter
Input Voltage EN Voltage Output Voltage Output Current ESD Classification
High PSRR, 150mA CMOS LDO
Maximum
-0.3 to 7 -0.3 to 7 - 0.3 to VIN + 0.3 PD / (V IN - VOUT) B*
Unit
V V V mA
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 C C
o
o
n Thermal Information
Parameter
Thermal Resistance (Junction to Ambient) Thermal Resistance (Junction to Case)
Package
SOT-23 SC-70-4 SC-70-5 SOT-23* SOT-23
Die Attach
Non-Conductive Epoxy Conductive Epoxy Non-Conductive Epoxy Non-Conductive Epoxy Conductive Epoxy
Symbol
JA
Maximum
260 331
Unit
o
C/W
JC
81 400
Internal Power Dissipation
SC-70-4 SC-70-5
PD 300 150 350
mW
Maximum Junction Temperature Solder Iron (10 Sec)**
o
C C
o
* Measure JC on backside center of molding compund if IC has no tab. ** MIL-STD-202G 210F
Rev.E.04 7
AME, Inc.
AME8838
n Electrical Specifications (Contd.)
VOUT(nom) > 2.0V, VIN=VOUT(nom)+ 0.5V; VOUT unless otherwise noted.
Parameter Input Voltage Output Voltage Accuracy Symbol VIN VOUT(nom) IOUT = 1mA, TA = 25o C IOUT = 1mA, TJ = -40 to 125 C IOUT=80mA, VOUT>= 3.0V VOUT=VOUT(nom) -2%VOUT(nom) IOUT=150mA, VOUT>= 3.0V VOUT=VOUT(nom) -2%VOUT(nom) IOUT=80mA, 2.5V<=VOUT< 3.0V VOUT=VOUT(nom) -2%VOUT(nom) Dropout Voltage (See Note 1) VDROPOUT IOUT=150mA, 2.5V<=VOUT< 3.0V VOUT=VOUT(nom) -2%VOUT(nom) IOUT=80mA, 2.0Vo
High PSRR, 150mA CMOS LDO
2V, VIN = 2.5V, VEN = VIN, TJ = -40 to 125OC, CIN = COUT = 1F
Test Condition Min Note1 -1.5 -3 80 Typ Max 6 1.5 3 170 Units V %
120
240
90
200 mV
135
270
120
250
180
360
IOUT=150mA, VOUT<=2.0V, VDROPOUT=2.5V-VOUT Current Limit Short Circuit Limit Quiescent Current ILIM ISC IQ VOUT = 0.8xVOUT(nom) , TA = 25oC VOUT = 0V, TA = 25oC TA = 25oC, VIN = 6V, 1mA < IOUT < 150mA IOUT = 1mA, VOUT > 2.0V Line Regulation (See Note 2) REGLINE VIN = VOUT +0.5V to VIN = 6V IOUT = 1mA, VOUT <= 2.0V VIN = 2.5V to VIN = 6V TA = 25 C TJ = -40 to125oC TA = 25 C TJ =-40 to 125oC VOUT > 2.0V Load Regulation (See Note 3) REGLOAD IOUT = 1 to 150mA VIN = VOUT + 0.5V VOUT <= 2.0V VIN = 2.5V Over Temperature Shutdown Over Temperature Hysterisis VOUT Temperature Coefficient Power Supply Ripple Rejection
8
o o
200
350 200 30
500
mA A
45 0.25 0.4
-0.25 -0.4 -0.4 -0.6
0.1
0.2
0.4 0.6
%/V
-0.02 0.0025 0.02 %/mA -0.04 0.004 160 40 30 0.04
o
OTS OTH TC PSRR
IOUT = 0mA IOUT = 0mA VIN = 4.3V, VOUT = 3.3V, COUT = 10f IOUT = 100mA, f = 1kHz
C C
o
ppm/oC dB
Rev.E.04
65
AME, Inc.
AME8838
n Electrical Specifications
Parameter Output Voltage Noise Enable Input Threshold Enable Input Bias Current Shutdown Supply Current Shutdown Output Voltage Symbol Test Condition f = 10Hz to 100kHz, IOUT = 10mA VOUT >= VOUT(min) VOUT <= 0.2V VIN = 6V, VEN = 0V or 6V VIN = 6V, VEN = 0V IOUT = 1mA 1.4 0 0.01 0.5 Min Typ 40 VIN 0.3 1 1 0.2 Max Units Vrms V V A A V
High PSRR, 150mA CMOS LDO
eN
VENH VENL IEN ISD VO,SD
Note1: If VOUT(nom) > 2.0V, VIN(min)=VOUT(nom)+VDROPOUT. If VOUT(nom)<=2.0V, VIN(min)=2.5V.
Vout x100% Vin Note2: Line Regulation = Vout
Vout x100% Note3: Load Regulation = Vout I (mA)
Rev.E.04
9
AME, Inc.
AME8838
n Detailed Description
The AME8838 family of CMOS regulators contain a PMOS pass transistor, voltage reference, error amplifier, over-current protection, and thermal shutdown. 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 150mA. During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 130oC. The AME8838 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over-stress.
High PSRR, 150mA CMOS LDO
n Enable
The Enable Pin is normally pull-high. When activated pulled low, the PMOS pass transistor shuts off, and all internal circuits are powered down. In this state, the stand by current is less than 1A. This pin can't be floating.
n External Capacitors
The AME8838 is stable with an output capacitor to ground of 1F or larger. 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. A second capacitor is recommended between the input and ground to stabilize VIN. The input capacitor should be at least 1F to have a beneficial effect.
10
Rev.E.04
AME, Inc.
AME8838
Dropout Voltage vs Temperature
550 500
High PSRR, 150mA CMOS LDO
Output Impedance vs Frequency
2.0 1.8
Dropout Voltage (mV)
450 400 350 300 250 200 150 100 50 0 -40 -25 -10 5 20 35 50 65 o 80 95 110 125
Output Impedance ()
1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 10 100 1000 IO=100mA 10000 100000 1000000 IO=50mA
Temperature ( C)
Frequency (Hz)
Output Voltage vs Load Current
3.33 3.325
Output Voltage vs Temperature
3.320 3.315 IO=1mA
Output Voltage (V)
Output Voltage (V)
3.32 3.315 3.31 3.305 3.30 3.295 3.29 3.285 0 15 30 45 60 75 90 105 120 135 150
3.310 3.305 3.300 3.295 3.290 3.285 3.280 3.275 3.270 -40 -25 -10 5 20 35 50 65 80 95 110 125 IO=150mA
Load Current (mA)
Temperature (oC)
Load Transient Response
Output Voltage Output Current (mV) (mA)
200 100 0
Line Transient Response
Input Voltage (V)
i = 25mA/s t
5.3 4.3
50 0 -50
Output Voltage (mV)
20
-20
Time (s)
Time (s)
Rev.E.04
11
AME, Inc.
AME8838
Quiescent Current vs Temperature
40
High PSRR, 150mA CMOS LDO
Quiescent Current (A)
35 30 25 20 15 10 5 0 -40
-25
-10
5
20
35
50
65
80
95
110 125
Temperature (oC)
Rising Time
3.8V
3.3V
EN
VOUT 20s/div
12
Rev.E.04
AME, Inc.
AME8838
n Date Code Rule
For SC-70 Package Only
Marking A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A Date Code W W W W W W W W W W Year xxx0 xxx1 xxx2 xxx3 xxx4 xxx5 xxx6 xxx7 xxx8 xxx9
A: B: C: D: E: F: G: H: I: J: w: Work Week Code 01&02 03&04 05&06 07&08 09&10 11&12 13&14 15&16 17&18 19&20 K: L: M: N: O: P: Q: R: S: T: 21&22 23&24 U: V: 41&42 43&44 45&46 47&48 49&50 51&52
High PSRR, 150mA CMOS LDO
25&26 W: 27&28 29&30 31&32 33&34 35&36 37&38 39&40 X: Y: Z:
For SOT-23 Package
Marking A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A Date Code W W W W W W W W W W W W W W W W W W W W Year xxx0 xxx1 xxx2 xxx3 xxx4 xxx5 xxx6 xxx7 xxx8 xxx9
Rev.E.04
13
AME, Inc.
AME8838
n Tape and Reel Dimension
SOT-23
P
High PSRR, 150mA CMOS LDO
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
SC-70-5
P
W AME PIN 1 AME
Carrier Tape, Number of Components Per Reel and Reel Size
Package SC-70-5
Carrier Width (W) 8.00.1 mm
Pitch (P) 4.00.1 mm
Part Per Full Reel 3000pcs
Reel Size 1801 mm
14
Rev.E.04
AME, Inc.
AME8838
n Tape and Reel Dimension
SC-70-4
P
High PSRR, 150mA CMOS LDO
W AME PIN 1 AME
Carrier Tape, Number of Components Per Reel and Reel Size
Package SC-70-4 Carrier Width (W) 8.00.1 mm Pitch (P) 4.00.1 mm Part Per Full Reel 3000pcs Reel Size 1801 mm
Rev.E.04
15
AME, Inc.
AME8838
n Package Dimension
SC-70-5
High PSRR, 150mA CMOS LDO
Top View D e1
0.15(0.006)
Side View
SYMBOLS
C A A D
MILLIMETERS MIN MAX
1.10 0.10 1.00 0.30 0.25 0.25 0.20 2.15 2.20 1.35
INCHES MIN
0.031 0.000 0.031 0.006 0.006 0.003 0.003 0.074 0.078 0.045
MAX
0.043 0.004 0.040 0.012 0.010 0.010 0.008 0.084 0.086 0.055
A A1 A2
0.80 0.00 0.80 0.15 0.15 0.08 0.08 1.90 2.00 1.15
E1/2 E1
0.15(0.006)
E/2 E
b b1 c
See Detail A
C e
.10(0.004) M
B CAB b
c1 D E E1
Front View
e e1
A
SEATING PLANE
0.65BSC 1.30BSC 0.26 0
o
0.0255BSC 0.0512BSC 0.010 0
o
A2
L 1 2
0.46 8
o
0.018 8o 10o
.10(0.004)
C
A1
C
4o
10 o
4o
Detail A c1
SECTION A-A
(b) b1 c1 c
.15(.0059)
H
GAGE PLANE
BASE METAL
c L
16
Rev.E.04
AME, Inc.
AME8838
n Package Dimension
SC-70-4
High PSRR, 150mA CMOS LDO
D e1 e
L
SYMBOLS A A1 A2
E
MILLIMETERS MIN
0.900 0.000 0.900 0.250 0.350 0.080
INCHES MIN
0.035 0.000 0.035 0.010 0.014 0.003
MAX
1.100 0.100 1.000 0.400 0.500 0.150
MAX
0.043 0.004 0.039 0.016 0.020 0.006
b b1 c
E1
L1 0.20 c
d D E E1
0.050 TYP 2.000 1.150 2.150 2.200 1.350 2.450
0.002 TYP 0.079 0.045 0.085 0.087 0.053 0.096
d b TOP VIEW b1
e
0.650 TYP 1.200 1.400
0.026TYP 0.047 0.055
SIDE VIEW
e1 L L1
0.525 REF 0.260 0
o
0.021 REF 0.010 0
o
0.460 8
o
0.018 8o
A2
A
A1 FRONT VIEW
Rev.E.04
17
AME, Inc.
AME8838
n Package Dimension
SOT-23
Top View D Side View
High PSRR, 150mA CMOS LDO
SYMBOLS
C
MILLIMETERS MIN MAX
1.40 0.15 0.50 0.25 3.10 1.80
INCHES MIN
0.0394 0.0000 0.0138 0.0035 0.1063 0.0551
MAX
0.0551 0.0059 0.0197 0.0098 0.1220 0.0709
A
L
1.00 0.00 0.35 0.09 2.70 1.40
A1 b C D E
E
e
H
c1
e H L 1
0
1.90 BSC 2.40 3.00
0.0748 BSC 0.09449 0.11811 0.0138BSC
o
Front View
0.35BSC
o
10
0o
10 o
A1
b
A
18
Rev.E.04
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. , September 2007 Document: 1003-DS8838-E.04
Corporate Headquarter
AME, Inc.
2F, 302 Rui-Guang Road, Nei-Hu District Taipei 114, Taiwan. Tel: 886 2 2627-8687 Fax: 886 2 2659-2989
U.S.A.(Subsidiary)
Analog Microelectronics, Inc.
3100 De La Cruz Blvd., Suite 201 Santa Clara, CA. 95054-2438 Tel : (408) 988-2388 Fax: (408) 988-2489

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