AME, Inc.
AME8838
n
General Description
The AME8838 family of positive, linear regulators fea-
ture low quiescent current (30µA typ.) low dropout volt-
age and excellent PSRR, thus making them ideal for Tele-
communications and other battery applications. The ul-
tra-small SC-70-5, SC-70-4 & SOT-23 packages are at-
tractive 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
1µF 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
30µA 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
1µF
Vref
GND
n
Typical Application
IN
IN
EN
IN
OUT
AME8838
OUT
GND
C2
1µF
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 1
µ
F or greater capacitor.
Ground connection pin.
Enable pin.
When pulled low, the PMOS pass transistor turns off, current consuming
less than 1µA.
No Connection.
LDO voltage regulator output pin.
It should be decoupled with a 1µF 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 1µF or greater value low ESR ceramic
capacitor.
Ground connection pin.
Input voltage pin.
It should be decoupled with 1
µ
F or greater capacitor.
Enable pin.
When pulled low, the PMOS pass transistor turns off, current consuming
less than 1µA.
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 1µF or greater value low ESR ceramic
capacitor.
Input voltage pin.
It should be decoupled with 1
µ
F 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 1µA.
Ground connection pin.
LDO voltage regulator output pin.
It should be decoupled with a 1µF or greater value low ESR ceramic
capacitor.
Input voltage pin.
It should be decoupled with 1
µ
F 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: -40
O
C to 85
O
C
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
(SC-70-5)
2. GND
3. IN
4. EN
5. NC
A: 1. EN
(SC-70-4)
2. GND
3. OUT
4. IN
A: 1. GND
(SOT-23)
2. OUT
(TSOT-23)
3. 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
Rev.E.04
5
PCB Design
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