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PDF AME8882 Data sheet ( Hoja de datos )
| Número de pieza | AME8882 | |
| Descripción | Low Dropout 2A CMOS Regulator | |
| Fabricantes | Analog Microelectronics | |
| Logotipo |  |
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AME
AME8882
Low Dropout 2A CMOS
Regulator
n General Description
The AME8882A/B family of positive CMOS linear regu-
lators provides ultra low-dropout voltage (240mV @2A)
and low quiescent current (typically 600uA), thus making
them ideal for power-saving system. These rugged de-
vices have both Thermal Shutdown and Current limit to
prevent device failure under the "Worst" of operating con-
ditions. The AME8882A/B also provides SS time in or-
der to reduce inrush current in different applications.
n Features
n Typical Application
VIN
10µF
Chip Enable
VCNTL
IN OUT
AME8882
ADJ
EN
VCNTL
PG
GND
1µF
VOUT= 0.8 x
R1+R2
R2
VOUT
R1 10µF
R2
100K
VOUT
l Low Dropout Voltage: 240mV @2A, 25oC
l Adjustable Output Voltage (0.8V to 3.3V)
l High Output Accuracy +1.5%
l Support Low ESR Multi-layer ceramic capacitors
(MLCC) Application
l Power Good Output
l Fast Transient Response
l Soft-Start Function
l Over-Temperature Shutdown with Hysteresis
l Current Limiting and Short Current Limit
Protection
l Green Products Meet RoHS Standards
VIN
10µF
Chip Enable
VCNTL
IN OUT
AME8882
ADJ
EN
VCNTL
PG
GND
1µF
VOUT= 0.8 x
R1+R2
R2
VOUT
R1 10µF
R2
100K
VOUT
n Functional Block Diagram
n Applications
l Motherboard Application
l Notebook Application
l Front Side Bus VTT(1.2V/2A)
IN
OCP
OTP
EN
VCNTL
POR
Driver
Error
Amplifier
0.8V
0.72V
OUT
ADJ
PG
GND
Rev. A.03
1
1 page  
AME
AME8882
Low Dropout 2A CMOS
Regulator
n Thermal Information
Parameter
Package Die Attach Symbol Maximum
Thermal Resistance
(Junction to Case)
SOP-8/PP
DFN-10B
19
θJC
8.5
Thermal Resistance
(Junction to Ambient)
SOP-8/PP
DFN-10B
Conductive Epoxy
θJA
84
65
Power Dissipation
SOP-8/PP
DFN-10B
1450
PD
1540
Lead Temperature (Soldering 10 Sec)**
260
*
**
MMeILa-sSuTreD-θ2J0C 2oGn2b1a0cFkside
center
of
Exposed
Pad.
Unit
oC / W
mW
oC
Rev. A.03
5
5 Page 
AME
AME8882
n Characterization Curve (Contd.)
Start Up form Enable
IOUT=2A
EN
(5V/Div)
VOUT
(1V/Div)
PG
(1V/Div)
IIN
(2A/Div)
Time (1ms/Div)
Start Up form VIN
IOUT=2A
VIN
(1V/Div)
VOUT
(1V/Div)
PG
(1V/Div)
IIN
(2A/Div)
Time (2ms/Div)
Over Current Protection
3.0
VIN=3.3V,VCNTL=5V
2.5
2.0
1.5
1.0
0.5
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Load Current IOUT (A)
Rev. A.03
Low Dropout 2A CMOS
Regulator
Start Up form VCNTL
IOUT=2A
VCNTL
(5V/Div)
VOUT
(1V/Div)
PG
(1V/Div)
IIN
(2A/Div)
Time (1ms/Div)
Short Circuit Protection
VCNTL=5V , VIN=1.8V, VOUT=1.2V
IOUT
(1A/Div)
Time (100µs/Div)
Dropout Voltage vs. Load Current
& Temperature
200
150
125oC
25oC
100
50 -40oC
0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2.0
Load Current IOUT (A)
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet AME8882.PDF ] | |
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