AME, Inc.
AME8890
150mA CMOS LDO
n
General Description
The AME8890 is a fixed 1.2V of positive, linear regula-
tor feature low quiescent current (30µA typ.) with low
dropout voltage, making them ideal for battery applica-
tions. The space-saving SOT-23-5 package is attractive
for "Pocket" and "Hand Held" applications.
This rugged device has 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.
The AME8890 is stable with an output capacitor of
2.2µF or greater.
n
Functional Block Diagram
IN
Overcurrent
Shutdown
Thermal
Shutdown
OUT
EN
AMP
R1
PG
Delay
R2
GND
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Features
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Very Low Dropout Voltage
Guaranteed 150mA Output
Accurate to within 3%
30µA Quiescent Current
Over-Temperature Shutdown
Current Limiting
Short Circuit Current Fold-back
Power Good Output Function
Power-Saving Shutdown Mode
Space-Saving SOT-25 (SOT-23-5)
Low Temperature Coefficient
n
Typical Application
IN
IN
PG
GND
OUT
EN
OUT
AME8890
C1
5V
1µF
C2
2.2µF
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Applications
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Instrumentation
Portable Electronics
Wireless Devices
Cordless Phones
PC Peripherals
Battery Powered Widgets
Electronic Scales
1
AME, Inc.
AME8890
150mA CMOS LDO
n
Pin Configuration
SOT-25 Top View
5
4
1. IN
2. GND
3. EN
4. PG
5. OUT
AME8890
1
2
3
n
Ordering Information
Part Number
AME8890TEEV
Marking
ATBww
Output Voltage
1.2V
Package
SOT-25
Operating Temp. Range
-40
O
C to +85
O
C
ww: represents the date code
Please consult AME sales office or authorized Rep./Distributor for other package type availability.
2
AME, Inc.
AME8890
150mA CMOS LDO
n
Absolute Maximum Ratings
Parameter
Input Voltage
Output Current
Output Voltage
ESD Classification
Maximum
7
P
D
/ (V
IN
- V
O
)
GND - 0.3 to V
IN
+ 0.3
B
Unit
V
mA
V
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
o
C
C
o
n
Thermal Information
Parameter
Thermal Resistance (
θ
ja
)
Internal Power Dissipation (P
D
)
(
∆
T = 100
o
C)
Maximum Junction Temperature
Maximum Lead Temperature ( 10 Sec)
SOT-25
SOT-25
Maximum
260
380
150
300
Unit
o
C/W
mW
o
C
C
o
3
AME, Inc.
AME8890
150mA CMOS LDO
n
Electrical Specifications
V
IN
= 2.7V, V
EN
= V
IN
, I
OUT
=100
µ
A,TA = 25
o
C unless otherwise noted
Parameter
Input Voltage
Output Voltage Accuracy
Symbol
V
IN
V
O
V
DROPOUT
I
LIM
I
Q
I
GND
REG
LINE
REG
LOAD
OTS
OTH
TC
Test Condition
I
O
=0.1mA
I
O
=150mA
V
OUT
=V
O
-2.0%
1.0V<V
O(NOM)
<=2.0V
2.0V<V
O(NOM)
<=2.8V
2.8V<V
O(NOM)
V
O
< 0.1V
V
IN
=6V, I
O
=0mA, V
O
=V
O
(nom)
V
IN
=6V, I
O
=1mA to 150mA
I
O
=100
µ
A
V
IN
=2.7V to 6V
1.0<= V
O
<= 2.0V
Min
2.7
-3
Typ
Max
6
3
1300
N/A
N/A
Units
V
%
Dropout Voltage
mV
Current Limit
Quiescent Current
Ground Pin Current
150
350
30
35
50
mA
µ
A
µ
A
0.3
%
Line Regulation
-0.3
Load Regulation
Over Temperature Shutdown
Over Temperature Hysterisis
V
O
Temperature Coefficient
Power Supply Rejection
I
O
=100
µ
A to 150mA
-4
1
150
30
30
4
%
o
o
C
C
ppm/
o
C
dB
f=1kHz
PSRR
I
O
=100mA
C
O
=2.2
µ
F
f=10Hz to 100kHz
I
O
=10mA
f=10kHz
f=100kHz
Co=2.2
µ
F
1.6
0
V
EN
=V
IN
V
EN
=0V
V
IN
=5V, V
O
=0V, V
EN
=0V
Output Loading<= 1200 ohm, V=0V
PG ON @ % of V
OUT
V
PG
=6V , PG is off
I
SINK
=0.1mA
See Timing Diagram on page 6
1.5
0
50
20
15
30
Vin
0.4
0.1
0.1
0.5
1
0.4
95
0.1
0.1
5
µ
Vrms
V
V
µ
A
µ
A
µ
A
V
%V
O(NOM)
µ
A
V
ms
Output Voltage Noise
eN
V
EH
V
EL
I
EH
I
EL
I
SD
V
O,SD
V
UV
I
LC
V
OL
T
PGD
EN Input Threshold
EN Input Bias Current
Shutdown Supply Current
Shutdown Output Voltage
Output Under Voltage
PG Leakage Current
PG Voltage Low
V
PG
Delay
Note1:V
IN(min)
=V
OUT
+V
DROPOUT
4
AME, Inc.
AME8890
Output Voltage vs Temperature
1.2025
1.2020
1.2015
44
150mA CMOS LDO
Quiescent Current vs Temperature
Quiescent Current (uA)
-5
25
o
Output Voltage (V)
42
40
38
36
34
32
30
-45
1.2010
1.2005
1.2000
-45
55
85
-5
25
o
55
85
Temperature ( C)
Temperature ( C)
Load Regulation vs Temperature
Load Regulation 1-150mA (%)
0.55
0.50
0.45
0.40
0.35
0.30
0.25
0.20
-45
2.3
2.2
PG Delay Time vs Temperature
PG Delay Time (mS)
2.1
2.0
1.9
1.8
1.7
-45
-5
25
55
85
-5
25
55
85
Temperature (
o
C)
Temperature (
o
C)
Short Circuit Current vs Temperature
122
120
118
116
114
112
110
-45
Dropout Voltage vs Temperature
Dropout Voltage @ 150mA (V)
1.10
124
Short Circuit Current (mA)
1.05
1.00
0.95
0.90
-5
Temperature (
o
C)
25
55
85
0.85
-45
-5
25
o
55
85
Temperature ( C)
5
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