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PDF AOZ2003 Data sheet ( Hoja de datos )
| Número de pieza | AOZ2003 | |
| Descripción | 3A Ultra Low Dropout Linear Regulator | |
| Fabricantes | Alpha & Omega Semiconductors | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AOZ2003 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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AOZ2003
3A Ultra Low Dropout Linear Regulator
General Description
The AOZ2003 is a 3A ultra low dropout linear regulator
designed for desktop motherboard, graphic card and
notebook applications. This device needs dual supplies,
a control voltage for the control circuitry and an input
voltage for power conversion. The AOZ2003 delivers
high-current and ultra low-drop output voltage for
applications where VOUT is very close to VIN.
The AOZ2003 features comprehensive control and
protection functions: a power on reset (POR) circuit for
monitoring both control and power inputs for proper
operation; an EN input for enabling or disabling the
device, a power OK with time delay for indicating the
output voltage status, a current limit function, and a
thermal shutdown function.
The AOZ2003 is available in exposed pad SO-8
package.
Features
Ultra low dropout linear regulator
1.35V~5.5V VIN supply voltage with external control
voltage
Dropout voltage (typical):
180mV @ 2A
270mV @ 3A
High accuracy output voltage +1.5%
Enable and Power Good
VOUT pull low resistance when disabled
Current limiting protection
Thermal shutdown protection
Output voltage adjustable
Small footprint exposed pad SO-8 Package
Green product and RoHS compliant
Applications
Desktop, notebook PCs
Workstations
Graphic cards
Low voltage logic supplies
Gaming
SMPS post regulators
Typical Application
R3
5.1kΩ
POK
EN
C2
1μF
4
CNTL
1
POK
VIN 3
VOUT 6
AOZ2003
C3
10μF
C1
optional
2 EN
GND
8
FB 7
R2
12kΩ
R1
4kΩ
5V
VCNTL
1.8V
VIN
1.072V
VOUT
CO
22μF
Rev. 1.1 August 2012
www.aosmd.com
Page 1 of 12
1 page  
AOZ2003
Electrical Characteristics (continued)
TA = 25 °C, VIN = 1.7V, VCNTL = VEN = 5V, CIN = COUT = 10F, unless otherwise specified. Specifications in BOLD indicate a
temperature of -40°C to +85°C.
Symbol
Parameter
Conditions
Min. Typ. Max. Units
ENABLE / POK
VEN_HI
VEN_LOW
IEN
VPOK_TH
Enable High Level
Disable Low Level
Enable Bias Current
POK Threshold
VPOK_HYS POK Hysteresis
TPOK_ON POK Time Delay (ON)
TPOK_OFF POK Time Delay (OFF)
VPOK_LOW POK Pull-low Voltage
PROTECTION
1.2
VEN = 5.5V
VIN = VEN =VCNTL = 5V, No load,
VOUT = 1.2 V
VIN = VEN =VCNTL = 5V, No load,
VOUT = 1.2 V
VIN = VEN =VCNTL = 5V, No load,
VFB > 90%*VREF
VIN = VEN =VCNTL = 5V, No load,
VFB < 10%*VREF
POK sink current = 5mA
0.2
12
90
10
2
50
0.45
V
V
A
%
%
ms
s
V
ILIM(2)
ISC
TSD
∆TSD
Current Limit
Short Circuit Current
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
Thermal Shutdown Temperature Reset
VOUT < 0.1V
VOUT < 0.1V
3.2 4
1.4
160
30
100
A
A
ºC
ºC
ºC
Note:
1. The dropout voltage is defined as VIN - VOUT, which is measured when VOUT is VOUT - 100mV.
2. The current limit was measured by the constant current limit value when VOUT is shorted directly. It is noted that the output capacitor current was
not included.
Rev. 1.1 August 2012
www.aosmd.com
Page 5 of 12
5 Page 
Tape and Reel Dimensions, SO-8 EP1
AOZ2003
Carrier Tape
T
D1
P1
P2
E1
E2 E
K0
UNIT: mm
Package
SO-8
(12mm)
A0
6.40
±0.10
B0
B0
5.20
±0.10
K0
2.10
±0.10
D0
1.60
±0.10
A0
D1
1.50
±0.10
D0
E
12.00
±0.10
P0
E1
1.75
±0.10
E2
5.50
±0.10
P0
8.00
±0.10
Feeding Direction
P1
4.00
±0.10
P2
2.00
±0.10
T
0.25
±0.10
Reel
W1
G
MN
V
S
K
R
H
UNIT: mm
W
Tape Size Reel Size M
N W W1
H
K S GRV
12mm
ø330 ø330.00 ø97.00 13.00 17.40 ø13.00 10.60 2.00 — — —
±0.50 ±0.10 ±0.30 ±1.00 +0.50/-0.20
±0.50
Leader/Trailer and Orientation
Rev. 1.1 August 2012
Trailer Tape
300mm min. or
75 empty pockets
Components Tape
Orientation in Pocket
www.aosmd.com
Leader Tape
500mm min. or
125 empty pockets
Page 11 of 12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet AOZ2003.PDF ] | |
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