AME, Inc.
1
AME8830
Ultra Low Dropout, Fast Turn On
150mA CMOS Regulator
n
Typical Application
n
Functional Block Diagram
l
Guaranteed 150mA Output
l
Thermal Shutdown
l
Very Low Dropout Voltage
l
Current Limiting
l
Fast Turn-On Time: 150
µ
s
l
Miniature SOT-25 Package
l
Logic Controlled Enable
l
All AME'
s
Lead Free Product Meet RoHS
Standard
The AME8830 is designed for portable and wireless
application with low dropout voltage and optimized perfor-
mance for battery powered systems to deliver ultra low
noise. The space-saving SOT-25 package is attractive for
Pocket and Hand Held applications.
The AME8830 is stable with a small 1
µ
F output ca-
pacitor.
In applications requiring a low noise without slowing
down the load transient response, Place a 0.01
µ
F ca-
pacitor between Bypass and Ground.
l
Portable Electronics
l
Wireless Devices
l
Cordless Phones
l
PC Peripherals
l
Battery Powered Widgets
n
General Description
n
Features
n
Applications
1
µ
F
AME8830
V
OUT
V
IN
C3
C1
1
µ
F
GND
V
OUT
EN
BYP
V
IN
C2
0.01
µ
F
Bypass
Vref
1.2V
Fast
Turn On
EN
Over Current &
Thermal Protection
V
OUT
R1
GND
R2
V
IN
AME, Inc.
2
Ultra Low Dropout, Fast Turn On
150mA CMOS Regulator
AME8830
n
Pin Configuration
AME8830
1. V
IN
2. GND
3. EN
4. BYP
5. V
OUT
SOT-25
Top View
1
3
2
5
4
AME8830
* Die Attach:
Conductive Epoxy
n
Pin Description
Pin Number
Pin Name
Description
1
V
IN
Input Voltage of the LDO
2
GND
Common Ground
3
EN
Enable Input Logic, Active High
4
BYP
Output Bypass Capacitor for Noise Reduction
5
V
OUT
Output Voltage of the LDO
AME, Inc.
3
AME8830
Ultra Low Dropout, Fast Turn On
150mA CMOS Regulator
n
Ordering Information
Note: ww represents the date code and pls refer to Date Code Rule before Package Dimension.
* A line on top of the first letter represents lead free plating such as BCMww.
Please consult AME sales office or authorized Rep./Distributor for the availability of package type.
n
Ordering Information
Operating Ambient Temperature Range
Number of Pins
Package Type
Pin Configuration
Special Feature
AME8830 x x x
x xxx x
Voltage
Part Number
Marking*
Output Voltage Package
Operating Ambient
Tempature Range
AME8830AEEV285Y
BCMww
2.85V
TSOT-25
- 40
o
C to + 85
o
C
AME8830AEEV285Z
BCMww
2.85V
SOT-25
- 40
o
C to + 85
o
C
A: 1. V
IN
E: -40
O
C to +85
O
C
E: SOT-2X
V: 5
285: V=2.85V
Y: Lead free & Low profile
2. GND
Z: Lead free
3. EN
4. BYP
5. V
OUT
Special Feature
Pin
Configuration
Voltage
Operating Ambient
Temperature
Range
Package Type
Number
of
Pins
AME, Inc.
4
Ultra Low Dropout, Fast Turn On
150mA CMOS Regulator
AME8830
Parameter
Symbol
Rating
Unit
Ambient Temperature Range
T
A
- 40 to + 85
o
C
Junction Temperature Range
T
J
- 40 to + 125
o
C
n
Absolute Maximum Ratings
n
Recommended Operating Conditions
n
Thermal Information
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device
* HBM B:2000~3999V
* Measure
JC
on center of molding compound if IC has no tab.
** MIL-STD-202G 210F
Parameter
Package
Die Attach
Symbol
Maximum
Unit
Thermal Resistance*
(Junction to Case)
JC
81
Thermal Resistance
(Junction to Ambient)
JA
260
Internal Power Dissipation
P
D
400
mW
150
o
C
350
o
C
Solder Iron (10 Sec)**
o
C / W
Maximum Junction Temperature
SOT-25
Conductive Epoxy
Parameter
Maximum
Unit
Input Voltage
5.5
V
Output Current
P
D
/ (V
IN
- V
O
)
mA
Output Voltage
GND - 0.3 to V
IN
+ 0.3
V
ESD Classification
B*
AME, Inc.
5
AME8830
Ultra Low Dropout, Fast Turn On
150mA CMOS Regulator
n
Electrical Specifications
Unless otherwise specilied: T
J
= 25
O
C, V
IN
=V
OUT(NOM)
+0.5V, C
IN
=1
µ
F, I
OUT
=1mA, C
OUT
=1
µ
F, C
BYPASS
=0.01
µ
F
Typical values are at T
J
= 25
O
C.
Parameter
Symbol
Min
Typ
Max
Units
Input Voltage
V
IN
2.5
5
V
-2
2
T
J
= -40
o
C~+125
o
C
-3
3
0.6
2
30
35
60
70
90
100
Current Limit
I
LIM
180
600
mA
Max Input Current at EN
I
EN
+/- 1
nA
T
J
= +25
o
C
135
150
T
J
= -40
o
C~+125
o
C
175
Shutdown Current
I
SD
T
J
= -40
o
C~+125
o
C
0.15
1.5
T
J
=+25
o
C
-0.15
0.15
%/V
T
J
= -40
o
C~+125
o
C -0.2
0.2
%/V
Load Regulation
REG
LOAD
T
J
= -40
o
C~+125
o
C
0.0025 0.005
%/mA
Over Temperature Shutdown
OTS
150
o
C
Over Temperature Hysterisis
OTH
20
o
C
V
EH
1.4
V
V
EL
0.4
V
Short Circuit Current Limit
Isc
300
mA
Turn_On Time
T
ON
150
µ
s
µ
V/
Hz
1
Output Voltage Noise
e
n
1KHz to 100 KHz
C
OUT
= 1
µ
F, C
BP
=0.01
µ
F
V
IN
= V
OUT
+ 0.2
PSRR
Power Supply Rejection
V
EN
= 0.4 and V
IN
= 5.0
V
EN
= 0.4
I
OUT
= 1mA to 150mA
Quiescent Current
Ground Pin Current
I
Q
I
GND
Test Condition
V
O
< 0.1V
V
O
I
OUT
= 1mA
0mA< I
OUT
<= 150mA
V
IN
= (V
OUT
+ 0.5V) to 5.0V
I
OUT
= 50mA
I
OUT
= 100mA
%
Dropout Voltage
V
DROPOUT
mV
Output Voltage Accuracy
I
OUT
= 1mA
I
OUT
= 150mA
T
J
= -40
o
C~+125
o
C
µ
A
Line Regulation
REG
LINE
V
IN
= (V
OUT
+ 0.5V) to 5.0V
V
EN
= 1.4
I
OUT
= 0mA
155
200
V
EN
= 1.4
I
OUT
= 0 to 150mA
T
J
= -40
o
C~+125
o
C
C
BYPASS
= 0.01
µ
F
f = 1 KHz, I
OUT
= 50mA
µ
Vrms
dB
1KHz to 100 KHz
100
C
OUT
= 1
µ
F
53
EN Input Threshold
Output Grounded
V
IN
=2.5V to 5.0V
V
IN
=2.5V to 5.0V
T
J
= -40
o
C~+125
o
C
AME, Inc.
6
Ultra Low Dropout, Fast Turn On
150mA CMOS Regulator
AME8830
n
Detailed Description
An input capacitance of
1
µ
F is required between the
AME8830 input pin and ground. This capacitor must be lo-
cated a distance of not more than 1cm from the input pin and
returned to a clean analog ground. A ceramic capacitor is
recommended.
Input Capacitor
The AME8830 is designed specifically to work with very
small ceramic output capacitors. A 1.0
µ
F ceramic capacitor
with ESR between 5m
to 500m
is suitable in the AME8830
application circuit.
It is also recommended that the output capacitor be placed
within 1cm from the output pin and returned to a clean ground
line.
Connecting a 0.01
µ
F capacitors between the C
BYPASS
pin
and ground significantly reduces noise on the regulator out-
put. This cap is connected directly to a high impedance node
in the band gap reference circuit. Any significant loading on
this node will cause a change on the regulated output voltage
. For this reason, DC leakage current through this pin must
be kept as low as possible for best output voltage accuracy.
The AME8830 output is turned on after VREF voltage
reaches its final value(1.205V nomial). The turn on time is de-
termined by the time constant of the bypass capacitor. The
smaller the capacitor value, the shorter the turn on time, but
less noise gets reduced.
Output Capacitor
Noise BYPASS Capacitor
ON/OFF Input Operation
Fast Turn On-Time
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 1.5
µ
A.
The AME8830 is turned off by pulling the EN pin low, and
turned on by pulling it high.
This pin behaves much like an electronic switch.
AME, Inc.
7
AME8830
Ultra Low Dropout, Fast Turn On
150mA CMOS Regulator
-0.80
-0.60
-0.40
-0.20
0.00
0.20
0.40
-50
-25
0
25
50
75
100
125
Temperature (
O
C)
V
O
U
T
C
h
a
n
g
e
(
%
)
V
IN
=V
OUT
+0.5V
Output Voltage Change vs Temp.
Dropout Voltage vs Load Current
0
20
40
60
80
100
120
140
160
180
200
0
1
2
3
4
5
V
IN
(V)
G
r
o
u
n
d
C
u
r
r
e
n
t
(
µ
A
)
I
L
=150mA
I
L
=100mA
I
L
=50mA
I
L
=0mA
Ground Current vs V
IN
@25
o
C
0
20
40
60
80
100
120
140
160
180
0
1
2
3
4
5
V
IN
(V)
G
r
o
u
n
d
C
u
r
r
e
n
t
(
µ
A
)
I
L
=150mA
I
L
=100mA
I
L
=50mA
I
L
=0mA
Ground Current vs V
IN
@-40
o
C
0
10
20
30
40
50
60
70
80
90
100
110
0
25
50
75
100
125
150
Load Current (mA)
D
r
o
p
o
u
t
V
o
l
t
a
g
e
(
m
V
)
Top to Bottom
T
J
= 125
o
C
T
J
= 85
o
C
T
J
= 55
o
C
T
J
= 25
o
C
T
J
= -5
o
C
T
J
= -25
o
C
T
J
=-40
o
C
* AME specifies full temperature range
as -40
o
C to +125
o
C of junction tempera-
ture. Due to the difficulty of measuring
junction temperature, AME decides to
measure +125
o
C of ambient tempera-
ture instead.
Heats DUT up to 125
o
C ambient will
result in junction temperature to be
higher than +125
o
C.
A marginal failure
of Dropout Voltage vs Load Current is
negligible.
AME, Inc.
8
Ultra Low Dropout, Fast Turn On
150mA CMOS Regulator
AME8830
I
s
c
(
1
0
0
m
A
/
D
i
v
)
200
µ
S/Div
0
100
200
300
V
IN
=3V
Output shorted
to GND
Short Circuit Current
Short Circuit Current
Short Circuit Current
Time (50
µ
S/Div)
0
0
V
IN
1V/Div
V
OUT
1V/Div
V
IN
=V
OUT
+0.2V
I=150mA
Start Up Time
Time (50
µ
S/Div)
0
0
V
IN
1V/Div
V
OUT
1V/Div
V
IN
=4.2V
I
L
=150mA
Start Up Time
Time (20
µ
S/Div)
0
0
V
IN
1V/Div
V
OUT
1V/Div
V
IN
=V
OUT
+0.2V
I
L
=150mA
C
BP
=0
Start Up Time
I
s
c
(
1
0
0
m
A
/
D
i
v
)
200
µ
S/Div
0
100
200
300
V
IN
=5V
Output shorted
to GND
I
s
c
(
1
0
0
m
A
/
D
i
v
)
200
µ
S/Div
300
200
100
0
V
IN
=3.3V
Output shorted
to GND
AME, Inc.
9
AME8830
Ultra Low Dropout, Fast Turn On
150mA CMOS Regulator
Time (20
µ
S/Div)
0
0
V
IN
1V/Div
V
OUT
1V/Div
V
IN
=4.2V
I
L
=150mA
C
BP
=0
Start Up Time
Start Up Time
Time (20
µ
S/Div)
0
0
V
IN
1V/Div
V
OUT
1V/Div
V
IN
=4.2V
I
L
=1mA
C
BP
=0
Start Up Time
Time (200
µ
S/Div)
3.2
V
I
N
(
V
)
V
O
U
T
1
m
V
/
D
i
v
C
OUT
=4.7
µ
F
I
L
=1mA
4.0
Line Transient Response
Time (200
µ
S/Div)
3.2
V
I
N
(
V
)
V
O
U
T
1
m
V
/
D
i
v
C
OUT
=1
µ
F
I
L
=1mA
4.0
Line Transient Response
Load Transient Response
Time (20
µ
S/Div)
0
0
V
IN
1V/Div
V
OUT
1V/Div
V
IN
=V
OUT
+0.2V
I
L
=1mA
C
BP
=0
Time (40
µ
S/Div)
150
1
L
o
a
d
C
u
r
r
e
n
t
(
m
A
)
V
O
U
T
5
0
m
V
/
D
i
v
V
IN
=3.2V
AME, Inc.
10
Ultra Low Dropout, Fast Turn On
150mA CMOS Regulator
AME8830
Load Transient Response
Load Transient Response
Time (40
µ
S/Div)
150
1
L
o
a
d
C
u
r
r
e
n
t
(
m
A
)
V
O
U
T
5
0
m
V
/
D
i
v
V
IN
=3.2V
C
IN
=C
OUT
=2.2
µ
F
Load Transient Response
Time (40
µ
S/Div)
150
1
L
o
a
d
C
u
r
r
e
n
t
(
m
A
)
V
O
U
T
5
0
m
V
/
D
i
v
V
IN
=4.2V
C
IN
=C
OUT
=2.2
µ
F
Time (20
µ
S/Div)
0
V
EN
2V/Div
V
OUT
1V/Div
V
IN
=V
OUT
+0.2V
I
L
=150mA
C
BP
=0
Enable Response
Time (20
µ
S/Div)
0
V
EN
2V/Div
V
OUT
1V/Div
V
IN
=4.2V
I
L
=150mA
C
BP
=0
Enable Response
Time (40
µ
S/Div)
150
1
L
o
a
d
C
u
r
r
e
n
t
(
m
A
)
V
O
U
T
5
0
m
V
/
D
i
v
V
IN
=4.2V
Enable Response
100
µ
S/Div
0
V
EN
2V/Div
V
OUT
1V/Div
V
IN
=V
OUT
+0.2V
I
L
=150mA
C
BP
=0.01
µ
F
AME, Inc.
11
AME8830
Ultra Low Dropout, Fast Turn On
150mA CMOS Regulator
100
µ
S/Div
0
V
EN
2V/Div
V
OUT
1V/Div
V
IN
=4.2V
I
L
=150mA
C
BP
=0.01
µ
F
Enable Response
0.1
1
10
1
10
100
Frequency(kHz)
C
BP
=0.01
µ
F,
I
OUT
=1,50,100,150mA
C
BP
=0.21
µ
F,
I
OUT
=1,50,100,150mA
C
BP
=0
µ
F,
I
OUT
=1,50,100,150mA
N
o
i
s
e
(
µ
V
/
H
z
)
Output Noise Spectral Density
Ripple Rejection
Ripple Rejection
Output Impedance
Output Impedance
0.05
0.25
0.45
0.65
0.85
1.05
1.25
1.45
1.65
1.85
100
1000
10000
100000
1000000
Frequency(Hz)
O
u
t
p
u
t
I
n
p
e
d
a
n
c
e
I
L
=50mA
I
L
=150mA
V
IN
=4.2V
0.05
0.25
0.45
0.65
0.85
1.05
1.25
1.45
1.65
1.85
100
1000
10000
100000
1000000
Frequency(Hz)
O
u
t
p
u
t
I
m
p
e
d
a
n
c
e
I
L
=50mA
I
L
=150mA
V
IN
=V
OUT
+0.2V
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
100
1K
10K
100K
1M
Frequency(Hz)
R
i
p
p
l
e
R
e
j
e
c
t
i
o
n
(
d
B
)
I
L
=100mA
I
L
=150mA
I
L
=50mA
I
L
=0mA
V
IN
=V
OUT
+1V
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
100
1K
10K
100K
1M
Frequency(Hz)
R
i
p
p
l
e
R
e
j
e
c
t
i
o
n
(
d
B
)
I
L
=100mA
I
L
=0mA
I
L
=150mA
V
IN
=V
OUT
+0.2V
I
L
=50mA
AME, Inc.
12
Ultra Low Dropout, Fast Turn On
150mA CMOS Regulator
AME8830
110
120
130
140
150
160
170
180
0
25
50
75
100
125
150
Load Current (mA)
G
r
o
u
n
d
C
u
r
r
e
n
t
(
u
A
)
T
J
=125
o
C
T
J
=85
o
C
T
J
=55
o
C
T
J
=25
o
C
T
J
=-5
o
C
T
J
=-25
o
C
T
J
=-40
o
C
Ground Current vs Load current
Ground Current vs V
IN
@125
o
C
0
20
40
60
80
100
120
140
160
180
200
220
0
1
2
3
4
5
G
r
o
u
n
d
C
u
r
r
e
n
t
(
µ
A
)
V
IN
(V)
I
L
=150mA
I
L
=100mA
I
L
=50mA
I
L
=0mA
AME, Inc.
13
AME8830
Ultra Low Dropout, Fast Turn On
150mA CMOS Regulator
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
TSOT-25
8.0±0.1 mm
4.0±0.1 mm
3000pcs
180±1 mm
n
Tape and Reel Dimension
TSOT-25
Carrier Tape, Number of Components Per Reel and Reel Size
W
P
AME
AME
PIN 1
n
Date Code Rule
Year
A
A
A
W
W
xxx0
A
A
A
W
W
xxx1
A
A
A
W
W
xxx2
A
A
A
W
W
xxx3
A
A
A
W
W
xxx4
A
A
A
W
W
xxx5
A
A
A
W
W
xxx6
A
A
A
W
W
xxx7
A
A
A
W
W
xxx8
A
A
A
W
W
xxx9
Marking
Date Code
AME, Inc.
14
Ultra Low Dropout, Fast Turn On
150mA CMOS Regulator
AME8830
n
Package Dimension
L
Top View
Side View
Front View
1
D
S1
e
E
H
A
1
b
A
TSOT-25
MIN
MAX
MIN
MAX
A+A
1
0.90
1.25
0.0354
0.0492
b
0.30
0.50
0.0118
0.0197
c
0.09
0.25
0.0035
0.0098
D
2.70
3.10
0.1063
0.1220
E
1.40
1.80
0.0551
0.0709
e
H
2.40
3.00
0.09449 0.11811
L
1
0
o
10
o
0
o
10
o
S
1
0.35BSC
0.0138BSC
0.95BSC
0.0374BSC
1.90 BSC
0.07480 BSC
SYMBOLS
MILLIMETERS
INCHES
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 2006
Document: 1109-DS8830-C.01
Corporate Headquarter
U.S.A.(Subsidiary)
AME, Inc.
Analog Microelectronics, Inc.
2F, 302 Rui-Guang Road, Nei-Hu District 3100 De La Cruz Blvd., Suite 201
Taipei 114, Taiwan, R.O.C. Santa Clara, CA. 95054-2046
Tel: 886 2 2627-8687 Tel : (408) 988-2388
Fax: 886 2 2659-2989
Fax: (408) 988-2489
www.ame.com.tw
E-Mail: sales@ame.com.tw
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