AME8833 [AME]
High PSRR, 150mA CMOS LDO; 高PSRR器，150mA的CMOS LDO
| 型号： | AME8833 |
| 厂家： | 
ANALOG MICROELECTRONICS |
| 描述： | High PSRR, 150mA CMOS LDO |
| 文件： | 总14页 (文件大小：285K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AME, Inc.
High PSRR, 150mA CMOS LDO
AME8833/8834
n General Description
n Functional Block Diagram
The AME8833 family of positive, linear regulators fea-
ture low quiescent current (50µA typ.) low dropout volt-
age and excellent PSRR, thus making them ideal for Tele-
communications and other battery applications. The ul-
tra-small SC-70 package is attractive for "Pocket" and
"Hand Held" applications.
OUT
IN
Overcurrent
Shutdown
Thermal
Shutdown
AME8834’s output voltage can be adjusted with an
external resister divider.
SHDN
R1
R2
These rugged devices have both Thermal Shutdown,
and Current Fold-back to prevent device failure under the
"Worst" of operating conditions.
-
AMP
+
As an additional feature, the AME8833/8834 is stable
with an output capacitance of just extended 0.22µF or
greater.
n Features
V
ref
GND
l Stable with only 0.22µF output Cap
l Very Low Dropout Voltage
l Guaranteed 150mA Output
l Accurate to within 1.0%
l 50µA Quiescent Current
n Typical Application
l Over-Temperature Shutdown
l Current Limiting
SHDN
IN
OUT
l Short Circuit Current Fold-back
l Excellent PSRR (Typ. 70dB)
l Power-Saving Shutdown Mode
l Ultra-small SC-70 and SOT-25-L Package
l Factory Pre-set Output Voltages
l Low Temperature Coefficient
l Input Voltage Range (2V - 5.5V)
IN
AME8833
GND
OUT
C2
C1
1µF
0.22µF
nApplications
l Cellular Phones
OUT
C2
l Instrumentation
l Portable Electronics
l Wireless Devices
l Cordless Phones
l PC Peripherals
SHDN
IN
OUT
IN
AME8834
GND
R1
C1
VREF
R2
l Battery Powered Widgets
l Electronic Scales
l Cameras
l Telecommunications
1
AME, Inc.
High PSRR, 150mA CMOS LDO
AME8833/8834
n Pin Configuration
SC-70
Top View
SOT-25-L
Top View
5
5
4
4
AME 8833AEIV
1. VIN
AME 8833AEEV
1. VIN
2. GND
3. SHDN
4. NC
2. GND
AME8833
AME8833
3. SHDN
4. NC
5. VOUT
5. VOUT
1
2
3
1
2
3
SC-70
Top View
SOT-25-L
Top View
5
5
4
4
AME 8833BEIV
1. VOUT
AME 8833BEEV
1. VOUT
2. GND
2. GND
AME8833
AME8833
3. VIN
3. VIN
4. SHDN
5. NC
4. SHDN
5. NC
1
2
3
1
2
3
SOT-25-L
Top View
SC-70
Top View
5
5
4
4
AME 8834AEEV
1. VIN
AME 8834AEIV
1. VIN
2. GND
2. GND
AME8834
AME8834
3. SHDN
4. ADJ
3. SHDN
4. ADJ
5. VOUT
5. VOUT
1
2
3
1
2
3
2
AME, Inc.
High PSRR, 150mA CMOS LDO
AME8833/8834
n Ordering Information
AME8833 x x x x x x
Special Feature
Voltage
Number of Pins
Package Type
Operating Temperature Range
Pin Configuration
Operating
Temperature
Range
Number
of
Pins
Pin
Package Type
Voltage
Special Feature
Configuration
-40OC to 85OC
A: 1. VIN
2. GND
3. SHDN
4. NC
E:
E: SOT-2X
I: SC-70
V: 5
180: V=1.8V
200: V=2.0V
250: V=2.5V
270: V=2.7V
280: V=2.8V
285: V=2.85V
300: V=3.0V
320: V=3.2V
330: V=3.3V
L: Low profile
Y: Lead free & Low profile
Z: Lead free
5. VOUT
B: 1. VOUT
2. GND
3. VIN
4. SHDN
5. NC
3
AME, Inc.
High PSRR, 150mA CMOS LDO
AME8833/8834
n Ordering Information
AME8834 x x x x x x
Special Feature
Voltage
Number of Pins
Package Type
Operating Temperature Range
Pin Configuration
Operating
Temperature
Range
Number
of
Pins
Pin
Package Type
Voltage
Special Feature
Configuration
-40OC to 85OC
A: 1. VIN
2. GND
E:
E: SOT-2X
I: SC-70
V: 5
ADJ: Adjustable
L: Low profile
Y: Lead free & Low profile
Z: Lead free
3. SHDN
4. ADJ
5. VOUT
4
AME, Inc.
High PSRR, 150mA CMOS LDO
AME8833/8834
n Ordering Information
Part Number
Marking
Output Voltage Package Operating Temp. 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
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
- 40oC to + 85oC
AME8833AEIV180
AWAw
1.8V
2.5V
2.7V
2.8V
2.85V
3.0V
3.2V
3.3V
1.8V
2.5V
2.7V
2.8V
2.85V
3.0V
3.3V
1.8V
2.5V
2.8V
2.85V
3.0V
SC-70
SC-70
SC-70
SC-70
SC-70
SC-70
SC-70
SC-70
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SOT-25
SC-70
SC-70
SC-70
SC-70
SC-70
AME8833AEIV250
AME8833AEIV270
AME8833AEIV280
AME8833AEIV285
AME8833AEIV300
AME8833AEIV320
AME8833AEIV330
AME8833AEEV180L
AME8833AEEV250L
AME8833AEEV270L
AME8833AEEV280L
AME8833AEEV285L
AME8833AEEV300L
AME8833AEEV330L
AME8833AEIV180Z
AME8833AEIV250Z
AME8833AEIV280Z
AME8833AEIV285Z
AME8833AEIV300Z
AWBw
AXFw
AWDw
AVZw
AWEw
AXGw
AWCw
AWMww
AWNww
AXEww
AWOww
AWPww
AWQww
AWRww
AWAw
AWBw
AWDw
AVZw
AWEw
- 40oC to + 85oC
- 40oC to + 85oC
AME8833AEIV330Z
AME8834AEIVADJ
AWCw
AWJw
3.3V
SC-70
SC-70
Adjustable
Note: w represents date code ( A thru Z ) : 2 work weeks per character.
Please consult AME sales office or authorized Rep./Distributor for other output voltage and package type availability.
5
AME, Inc.
High PSRR, 150mA CMOS LDO
AME8833/8834
n Absolute Maximum Ratings
Parameter
Input Voltage
Maximum
Unit
V
6
PD / (VIN - VO)
GND - 0.3 to VIN + 0.3
B
Output Current
mA
V
Output Voltage
ESD Classification
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device
n Recommended Operating Conditions
Parameter
Ambient Temperature Range
Junction Temperature
Rating
- 40 to + 85
- 40 to + 125
Unit
oC
oC
n Thermal Information
Parameter
Maximum
Unit
oC / W
oC / W
oC / W
oC / W
oC
Thermal Resistance (
Thermal Resistance (
Thermal Resistance (
Thermal Resistance (
)
SOT-25
260
81
θja
)
)
)
SOT-25
SC-70
SC-70
θjc
θja
θjc
331
224
150
300
Maximum Junction Temperature
oC
Maximum Lead Temperature (10 Sec)
6
AME, Inc.
High PSRR, 150mA CMOS LDO
AME8833/8834
n Electrical Specifications
VIN=VOUT+0.5V, VSHDN=VIN, TA = 25OC,CIN=COUT=1µF, AME8834 is tested with 2.45V output, unless otherwise noted
Test Condition
Parameter
Input Voltage
Symbol
Min
Note1
-1
Typ Max Units
5.5
1
V
VIN
25oC
-40oC~85oC
25oC
-40oC~85oC
25oC
-40oC~85oC
25oC
-40oC~85oC
AME8833
AME8834
AME8833
AME8834
-2
2
IO=0.1mA
IO=150mA
%
-1.5
-2.5
-2
1.5
2.5
2
Output Voltage Accuracy
VO
-2.5
-2
2.5
2
%
-2.5
2.5
500
1000
IO=150mA
VOUT >= 2.0V
VOUT < 2.0V
Dropout Voltage
VDROPOUT
mV
VOUT=VO(NOM) -2%
Current Limit
VO>800mV
150
200
80
mA
mA
ILIM
IFB
Foldback Current
Quiescent Current
Ground Pin Current
VO=0V
VIN=5V, IO=0mA
60
A
µ
IQ
VIN=5V, IO =1mA to 150mA
IO=0.1mA, VOUT>2.0V
VIN=VOUT+0.5V to 5.5V
IO=0.1mA, VOUT<=2.0V
VIN=VOUT+1V to 5.5V
50
A
µ
IGND
-0.2
-0.4
-1
0.2
0.4
1
Line Regulation
Load Regulation
REGLINE
%
V
OUT>2.0V
VIN=VOUT+0.5V
OUT<=2.0V
VIN=VOUT+1V
REGLOAD IO=0.1 to 150mA
%
V
-2
2
oC
oC
ppm/oC
Over Temperature Shutdown
Over Temperature Hysterisis
VO Temperature Coefficient
OTS
OTH
TC
137
23
30
R =100
Ω
O
Power Supply Rejection
Output Voltage Noise
SHDN Input Threshold
SHDN Input Bias Current
Shutdown Supply Current
PSRR
eN
f=1kHz
Co=0.22 F
70
30
dB
C =0.22 F
µ
O
f=10Hz to 100kHz
IO=10mA
Vrms
µ
µ
V
SHDN = 0.8 x VIN
SHDN = 0.6V
Vin
0.6
V
V
VSHDNH
VSHDNL
0.8xVIN
0
V
TA= 25oC
TA= 85oC
TA=25oC
TA=85oC
0.01
0.1
0.5
1
VIN = 5V
A
µ
µ
EN = 0V or 5V
VIN=5V
1
ISD
A
VO=0V
Shutdown Output Voltage
ADJ Refernece Voltage
(AME8834)
Output Loading<= 1200 ohm, V=0V
0
0.4
V
VO,SD
VREF
1.206 1.225 1.243
V
TA= 25oC
VIN=5.5V
0.05
0.1
0.1
ADJ Input Bias Current
(AME8834)
A
µ
TA= 85oC
VADJ=1.3V
Note1:VIN(min)=VOUT+VDROPOUT
AME, Inc.
High PSRR, 150mA CMOS LDO
AME8833/8834
n Detailed Description
n Shutdown
The AME8833/8834 family of CMOS regulators con-
tain a PMOS pass transistor, voltage reference, error am-
plifier, over-current protection, and thermal shutdown.
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 1µA. This
pin behaves much like an electronic switch.
The P-channel pass transistor receives data from the
error amplifier, over-current shutdown, and thermal pro-
tection circuits. During normal operation, the error ampli-
fier compares the output voltage to a precision reference.
Over-current and Thermal shutdown circuits become ac-
tive when the junction temperature exceeds 150oC, or
the current exceeds 150mA. During thermal shutdown,
the output voltage remains low. Normal operation is re-
stored when the junction temperature drops below 120oC.
n Adjustable Version
AME8834 features a user-adjustable output through an
external feedback resister divider. To set the output of
AME8834 use the following equation:
VOUT=VADJ(1+R1/R2)
VADJ=1.225V, use 1% or better resistors
The AME8833/8834 switches from voltage mode to cur-
rent mode when the load exceeds the rated output cur-
rent. This prevents over-stress. The AME8833/8834 also
incorporates current foldback to reduce power dissipa-
tion when the output is short circuited. This feature be-
comes 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 External Capacitors
The AME8833/8834 is stable with an output capacitor
to ground of 0.22µF 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.
A second capacitor is recommended between the in-
put and ground to stabilize Vin. The input capacitor should
be at least 1µF to have a beneficial effect.
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.
8
AME, Inc.
High PSRR, 150mA CMOS LDO
AME8833/8834
Input Current vs. Input Voltage
Input Current vs. Temperature
57.5
57.0
70
60
50
40
30
20
10
0
56.5
56.0
55.5
55.0
54.5
54.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
-45
-5
25
55
85
Temperature (oC)
Input Voltage (V)
Dropout Voltage vs. Load
Output Voltage vs. Temperature
300
250
200
150
100
50
2.852
2.850
2.848
2.846
2.844
2.842
2.840
2.838
85oC
55oC
25oC
- 5oC
- 45oC
0
0
30
60
90
120
150
-45
-5
25
55
85
Temperature (oC)
Load Current (mA)
Output Voltage vs. Load Current
Output Voltage vs. Input Voltage
2.855
2.850
2.845
2.840
2.835
2.830
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
30
60
90
120
150
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Input Voltage (V)
Load Current (mA)
9
AME, Inc.
High PSRR, 150mA CMOS LDO
AME8833/8834
Exiting Shutdown Waveform
Entering Shutdown Waveform
Shutdown Voltage
Shutdown Voltage
VOUT=2.85V
LOAD=50Ω
R
RLOAD=50Ω
Output Voltage
Output Voltage
10 µS / DIV
10 µS / DIV
Output Noise Spectral Density vs. Frequency
Line Transient Response
1.0E+04
, I OUT = 0 to 50mA
VIN =3.0V
1.0E+03
VOUT , 10mV/div
1.0E+02
1.0E+01
0.01
0.1
1
10
100
1000
200uS/div
FREQ (KHz)
Load Transient Response
PSRR vs. Frequency
75
70
65
60
VIN = 3.5 to 4.0V
55
50
45
40
35
30
VOUT , 1mV/div
0.01
0.1
1
10
100
1000
1mS/div
Frequency
(KHz)
10
AME, Inc.
High PSRR, 150mA CMOS LDO
AME8833/8834
Dropout Voltage vs. Output Voltage
Region of Stable Cout ESR vs. Load Current
290
1.E+03
270
250
1.E+02
1.E+01
230
210
Stable Region
1.E+00
190
170
1.E-01
1.E-02
150
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0
20
40
60
80
100
120
Load Current (mA)
Output Voltage (V)
11
AME, Inc.
High PSRR, 150mA CMOS LDO
AME8833/8834
n Package Dimension
SC-70
Top View
Side View
MILLIMETERS
INCHES
SYMBOLS
MIN
0.80
0.00
0.80
0.15
0.15
0.08
0.08
1.90
2.00
1.15
MAX
MIN
MAX
0.15(0.006)
D
C
A
A1
A2
b
1.10
0.031
0.000
0.031
0.006
0.006
0.003
0.003
0.074
0.078
0.045
0.043
A
A
e1
D
0.10
1.00
0.004
0.040
E/2
E1/2
E
0.30
0.25
0.012
0.010
E1
b1
c
0.15(0.006)
C
0.25
0.20
2.15
2.20
1.35
0.010
0.008
0.084
0.086
0.055
See Detail A
e
c1
D
B
b
.10(0.004) M
C A B
E
E1
e
Front View
0.65BSC
1.30BSC
0.0255BSC
0.0512BSC
0.010 0.018
0o 8o
4o 10o
e1
L
A2
A
0.26
0.46
8o
SEATING PLANE
0o
4o
è1
è2
A1
C
.10(0.004)
C
10o
NOTE:
1. Controlling Dimension : Millimeter, converted inch dimension
are not necessarily exact.
2. Dimensiioning and tolerancing per ansi Y14.5m-1994.
3. Dimension "d" does not include mold flash,protrusion or gate
burr, mold flash,protrusion or gate burr shall not exceed
0.15mm(0.006") per end. Dimension E1 do not include inter-lead
flash or protrusion, inter-lead flash or protrusion shall not ex-
ceed 0.15mm(0.006") per side.
Detail A
SECTION A-A
£ c1
(b)
b1
4. The package top be smaller than the package bottom. Dimen-
sion D and E1 are determined at outermost extremes of the
plastic body exclusive of mold flash, tie bar burrs, gate burrs
and interlead flash, but including any mismatch between the top
and bottom of the plastic body.
c1
c
GAGE
PLANE
H
.15(.0059)
BASE METAL
c£
L
12
AME, Inc.
High PSRR, 150mA CMOS LDO
AME8833/8834
n Package Dimension
SOT-25-L
Top View
Side View
MILLIMETERS
INCHES
MIN MAX
SYMBOLS
D
MIN
1.00
0.30
2.70
1.40
MAX
1.30
0.55
3.10
1.80
A+A1
0.0394 0.0512
0.0118 0.0217
0.1063 0.1220
0.0551 0.0709
0.07480 BSC
b
D
E
e
1.90 BSC
£ c1
2.60
3.00
0.10236 0.11811
0.0146BSC
H
L
S1
e
0.37BSC
0o
10o
0o
10o
è1
S1
Front View
0.95BSC
0.0374BSC
b
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.
AME, Inc. , February 2004
Document: 2029-DS8833/8834-C
Corporate Headquarter
AME, Inc.
2F, 189 Kang-Chien Road, Nei-Hu Distric
Taipei 114, Taiwan, R.O.C.
Tel: 886 2 2627-8687
U.S.A. (Subsidiary)
Analog Microelectronics, Inc.
3100 De La Cruz Blvd., Suite 201
Santa Clara, CA. 95054-2046
Tel : (408) 988-2388
Fax: 886 2 2659-2989
Fax: (408) 988-2489
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