AV1086 [AVICTEK]
LINEAR INTEGRATED CIRCUIT; 线性集成电路
| 型号： | AV1086 |
| 厂家： | 
Avic Technology |
| 描述： | LINEAR INTEGRATED CIRCUIT |
| 文件： | 总5页 (文件大小：183K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
@vic AV1086
LINEAR INTEGRATED CIRCUIT
1.5A ADJUSTABLE/FIXED LOW
DROPOUT LINEAR REGULATOR
1
1
DESCRIPTION
TO-263
1
TO-263-3
The @vic AV1086 and AV1086-1.8V,2.5V, 2.85V, 3.3V
and 5V are low dropout three-terminal regulators with 1.5A
output current capability. These devices have been
optimized for low voltage where transient response and
minimum input voltage are critical. The 2.85V version is
designed specifically to be used in Active Terminators for
SCSI bus.
TO-220
Current limit is trimmed to ensure specified output
current and controlled short-circuit current. On-chip thermal
limiting provides protection against any combination of
overload and ambient temperatures that would create
excessive junction temperatures.
Unlike PNP type regulators where up to 10% of the
output current is wasted as quiescent current, the
quiescent current of the UZ1086 flows into the load,
increasing efficiency.
1
1
TO-252
SOT-223
3: VIN
1: ADJ/GND
2: VOUT
FEATURES
*Low dropout voltage
*Load regulation: 0.05% typical
*Trimmed current limit
*On-chip thermal limiting
*Three-terminal adjustable or fixed 1.8V, 2.5V, 2.85V,
3.3V, 5V
APPLICATIONS
*Active SCSI terminators
*High efficiency linear regulators
*Post regulators for switching supplies
*Battery charges
*5V to 3.3V linear regulators
*Motherboard clock supplies
QW-R102-008,D
@vic AV1086
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATIONS
AV1086
VIN
VOUT
1.5V at 1.5A
VIN=3.3V
+
+
R1
10µF
22µF
ADJ
124Ω
R2
VOUT=VREF(1+R2/R1)+IAdj*R2
24.9Ω
AV1086-2.85
VIN
VOUT
2.85V at 1.5A
VIN=5V
+
+
10µF
22µF
GND
ABSOLUTE MAXIMUM RATINGS (Ta=25°C, unless otherwise specified)
PARAMETER
MIN
MAX
7.5
UNIT
V
VIN
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering,10 sec)
0
-65
125
150
300
°C
°C
°C
ELECTRICAL CHARACTERISTICS (VIN≤7V, TJ=25°C, unless otherwise specified.
The*denotes specifications which apply over the specified operating temperature range.)
PARAMETER
Reference Voltage
(note 3)
SYMBOL
VREF
TEST CONDITIONS
1.5V≤(VIN – VOUT ) ≤5.75V
10mA≤IOUT≤1A
MIN TYP MAX UNIT
*
1.225 1.25 1.275
V
Output Voltage
10mA≤IOUT≤1A
*
*
*
*
UZ1086-1.8V 3.3V≤VIN≤7V
UZ1086-2.5 4V≤VIN ≤7V
UZ1086-2.85 4.35V≤VIN ≤7V
UZ1086-3.3 4.8V≤VIN ≤7V
UZ1086-5.0 6.5V≤VIN ≤7V
(VOUT+1.5V)≤VIN ≤7V, IOUT=10mA
VIN – VOUT =2V, 10mA≤IOUT≤1A
1.764 1.80 1.836
2.450 2.50 2.550
2.793 2.85 2.907
3.234 3.30 3.366
4.900 5.00 5.100
0.005 0.2
V
V
V
V
Line Regulation (note1,2)
Load Regulation
(note1,2)
*
*
%
%
0.05
0.5
1.5
120
5
Dropout Voltage
Current Limit
Adjust Pin Current
(note 3)
*
*
*
∆VREF =1%,IOUT=1.5A
1.3
2
35
V
A
µA
VIN – VOUT =2V
1.6
10
IAdj
Adjust Pin Current
Change (note3)
Minimum Load Current
Quiescent Current
*
1.5V≤(VIN – VOUT ) ≤5.75V,
10mA≤IOUT≤1A
1.5V≤(VIN – VOUT ) ≤5.75V
VIN =VOUT+1.25V
0.2
4
µA
*
*
mA
mA
13
QW-R102-008,D
@vic AV1086
LINEAR INTEGRATED CIRCUIT
PARAMETER
SYMBOL
TEST CONDITIONS
f=120Hz,COUT=22µF, Tantalum
VIN – VOUT =3V, IOUT=1.5A
TA=25°C,30ms pulse
MIN TYP MAX UNIT
Ripple Rejection
60
72
dB
Thermal Regulation
Temperature Stability
Long-Term Stability
RMS Output Noise
Thermal Resistance
Junction to Case (note 4)
Thermal Shutdown
Thermal Shutdown
Hysteresis
0.004 0.02
0.5
%/W
%
%
*
TA=125°C, 1000hrs
TA=25°C, 10Hz≤f≤10kHz
SOT-223
TO-252,TO-263,TO-220
Junction Temperature
0.03
0.003
15
1
VOUT
%
°C/W
3
155
10
°C
°C
Note:
1.
See thermal regulation specifications for changes in output voltage due to heating effects. Load and line
regulation are measured at a constant junction temperature by low duty cycle pulse testing.
Line and load regulation are guaranteed up to the maximum power dissipation. Power dissipation is determined
by input/output differential and the output current. Guaranteed maximum output power will not be available over
the full input/output voltage range.
2.
3. AV1086 adjustable only.
4. With package soldered to 0.5 square inch copper area over backside ground plane or internal power plane,
Thermal Resistance Junction to Ambient can vary from 30°C/W to more than 50°C/W. Other mounting
techniques may provide better thermal resistance than 30°C/W.
QW-R102-008,D
@vic AV1086
LINEAR INTEGRATED CIRCUIT
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 1.Dropout Voltage vs.Output Current
1.5
Figure 2. Load Regulation vs.Temperature
0.1
1.4
∆I=1A
0.0
5
1.3
1.2
1.1
1.0
0.9
0
-0.05
-0.1
0.8
0.7
-
0.6
0.5
0
0.15
-0.2
0
0.3
-75 -50 -25
0
25 50 75 100 125150175
0.6
0.9
1.2
1.5
Output Current (A)
Junction Temperature(° C)
Figure 3.Reference Votage vs.Temperature
Figure 4.Output Voltage vs.Temperature
1.25
1.24
5
3.7
3.65
3.6
VOUT SET WITH 1% RESISTORS
VOUT =3.6V
1.24
1.23
3.55
3.5
5
1.23
1.225
1.2
3.45
3.4
2
1.215
3.35
VOUT =3.3V
1.21
1.205
1.2
3.3
3.25
3.2
UZ1086 adjustable Only
-75 -50 -25
0
25 50 75 100 125150175
-75 -50 -25
0
25 50 75 100 125150175
Junction Temperature(° C)
Junction Temperature(° C)
QW-R102-008,D
@vic AV1086
LINEAR INTEGRATED CIRCUIT
Figure 5.Minimum Load Current vs.Temperature
Figure 6.Adjust Pin Current vs.Temperature
100
5
4
3
2
Note1.UZ1086 Only
90
80
70
60
50
40
30
20
10
0
1
0
-75 -50 -25
0
25 50 75 100125150175
-75 -50 -25
0
25 50 75 100 125150175
Junction Temperature(° C)
Junction Temperature(° C)
Figure 7. Short-Circuit Current vs.Temperature
Figure 8. Ripple Rejection vs.Frequency
2.0
90
80
1.7
5
70
60
50
40
1.5
30
20
10
0
1.25
1.0
VIN-VOUT=3V
0.5<VRIPPLE<2V
IOUT=1A
-75 -50 -25
0
25 50 75 100125150175
100
1K
10K
100K
10
Junction Temperature(° C)
Frequency (Hz)
QW-R102-008,D
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