AME
AME8855
n
General Description
The AME8855 family of positive, CMOS linear regula-
tors provide low dropout voltage(420mV@600mA), low
quiescent current, and low noise CMOS LDO. These
rugged devices have both Thermal Shutdown, and Cur-
rent limit to prevent device failure under the "Worst" of
operating conditions.
High PSRR, Low Noise, 600mA
CMOS Regulator
n
Typical Application
IN
OUT
IN
OUT
AME8855
EN
C
IN
1µF
GND
C
OUT
1µF
n
Features
l
Low Dropout Voltage: 420mV@600mA
l
Guaranteed Current: 600mA
l
Quiescent Current: 60µA (typ.)
l
Over-Temperature Shutdown
l
Current Limiting protection
l
PSRR:60dB@10KHz
l
Ultra-Low-Noise: 100µV
RMS
at 1Hz to 100KHz
l
Low Temperature Coefficient
l
Input Voltage Range 2.8V~5.5V
l
Output Voltage Range: 0.8V ~ 4.3V
l
Green Products Meet RoHS Standards
EN
Thermal
Shutdown
R1
n
Functional Block Diagram
IN
OUT
Overcurrent
Shutdown
n
Applications
l
Instrumentation
l
Portable Electronics
l
Wireless Devices
l
Cordless Phones
l
PC Peripherals
l
Battery Powered Widgets
-
AMP
+
R2
Vref
GND
Rev. C.02
1
AME
AME8855
n
Pin Configuration
3 Pin
SOT-223
Top View
AME8855-AGTxxx
1. IN
AME8855
High PSRR, Low Noise, 600mA
CMOS Regulator
SOT-223
Top View
AME8855-BGTxxx
1. GND
AME8855
2. GND (TAB)
3. OUT
2. OUT (TAB)
3. IN
1
2
3
* Die Attach:
Conductive Epoxy
1
2
3
* Die Attach:
Non-Conductive Epoxy
SOT-89
Top View
AME8855-AFTxxx
SOT-89
Top View
AME8855-BFTxxx
AME8855
1. IN
2. GND (TAB)
3. OUT
AME8855
1. GND
2. OUT (TAB)
3. IN
1
2
3
* Die Attach:
Conductive Epoxy
1
2
3
* Die Attach:
Non-Conductive Epoxy
SOT-89
Top View
AME8855-CFTxxx
1. GND
2. IN (TAB)
3. OUT
AME8855
1
2
3
* Die Attach:
Non-Conductive Epoxy
2
Rev. C.02
AME
AME8855
n
Pin Configuration (Contd.)
3 Pin
SOT-23
Top View
3
High PSRR, Low Noise, 600mA
CMOS Regulator
SOT-23
Top View
AME8855-AETxxx
1. IN
2. GND
3
AME8855-BETxxx
1. GND
2. OUT
AME8855
3. OUT
* Die Attach:
Non-Conductive Epoxy
AME8855
3. IN
* Die Attach:
Non-Conductive Epoxy
1
2
1
2
5 Pin
8 Pin
SOT-25
Top View
5
4
8
SOP-8
Top View
7
6
5
AME8855-AEVxxx
1. IN
2. GND
3. EN
4. NC
5. OUT
* Die Attach:
Conductive Epoxy
AME8855-AHAxxx
1. IN
2. GND
AME8855
AME 8855
3. GND
4. OUT
5. NC
6. GND
7. GND
8. EN
* Die Attach:
Conductive Epoxy
1
2
3
1
2
3
4
Rev. C.02
3
AME
AME8855
n
Pin Description
SOT-223
High PSRR, Low Noise, 600mA
CMOS Regulator
Pin Number
A
1
2
3
B
3
1
2
Pin Name
IN
GND
OUT
Pin Description
Input voltage pin; should be decoupled with 1µF or greater
capacitor.
Ground connection pin.
LDO voltage regulator output pin; should be decoupled with a 1.0µF
or greater value low ESR ceramic capacitor.
SOT-89
Pin Number
A
1
2
3
B
3
1
2
C
2
1
3
Pin Name
IN
GND
OUT
Pin Description
Input voltage pin; should be decoupled with 1µF or greater
capacitor.
Ground connection pin.
LDO voltage regulator output pin; should be decoupled with a 1.0µF
or greater value low ESR ceramic capacitor.
4
Rev. C.02
AME
AME8855
n
Pin Configuration
SOP-8
High PSRR, Low Noise, 600mA
CMOS Regulator
Pin Number
1
2
3
4
5
6
7
Pin Name
IN
GND
GND
OUT
NC
GND
GND
Pin Description
Input voltage pin; should be decoupled with 1µF or greater capacitor.
Ground connection pin.
Ground connection pin.
LDO voltage regulator output pin; should be decoupled with a 1.0µF
or greater value low ESR ceramic capacitor.
No connection.
Ground connection pin.
Ground connection pin.
Enable pin, Active “high". When pulled “low”, the PMOS pass
transistor turns off, current consuming less than 1µA. When EN pin
floating outside, it’s weakly pulled high from internal MOS .
8
EN
Rev. C.02
5
PCB Design
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