FAN1086D-2.85 [ETC]
Positive Fixed Voltage Regulator ; 正固定电压稳压器\n
| 型号： | FAN1086D-2.85 |
| 厂家： | 
ETC |
| 描述： | Positive Fixed Voltage Regulator
|
| 文件： | 总9页 (文件大小：47K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
www.fairchildsemi.com
FAN1 0 8 6
1 .5 A Ad ju s t a b le /Fix e d Lo w Dro p o u t Lin e a r Re g u la t o r
Features
Description
• Low dropout voltage
• Load regulation: 0.05% typical
• Trimmed current limit
• On-chip thermal limiting
• Standard SOT-223, TO-263, and TO-252 packages
• Three-terminal adjustable or fixed 2.5V, 2.85V, 3.3V, 5V
The FAN1086 and FAN1086-2.5, -2.85, -3.3 and -5 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.
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.
Applications
• Active SCSI terminators
• High efficiency linear regulators
• Post regulators for switching supplies
• Battery chargers
• 5V to 3.3V linear regulators
• Motherboard clock supplies
Unlike PNP type regulators where up to 10% of the output
current is wasted as quiescent current, the quiescent current
of the FAN1086 flows into the load, increasing efficiency.
The FAN1086 series regulators are available in the industry-
standard SOT-223, TO-263, and TO-252 power packages.
Typical Applications
FAN1086
VIN = 3.3V
VIN
VOUT
1.5V at 1.5A
+
+
10µF
22µF
124Ω
ADJ
24.9Ω
FAN1086-2.85
VIN = 5V
VIN
VOUT
2.85V at 1.5A
+
+
10µF
22µF
GND
REV. 1.0.3 9/7/01
PRODUCT SPECIFICATION
FAN1086
Pin Assignments
Tab is
VOUT
Front View
Tab is
VOUT
3
2
IN
Tab is
VOUT
OUT
1
ADJ/GND
4-Lead Plastic SOT-223
1
2
3
1
2
3
ΘJC = 15°C/W*
ADJ/
GND
IN
ADJ/
GND
OUT
IN
3-Lead Plastic TO-252
ΘJC = 3°C/W*
3-Lead Plastic TO-263
ΘJC = 3°C/W*
*With package soldered to 0.5 square inch copper area over backside ground plane or internal power plane, ΘJA can vary from
30°C/W to more than 50°C/W. Other mounting techniques may provide better thermal resistance than 30°C/W.
Absolute Maximum Ratings
Parameter
Min.
Max.
7.5
Unit
V
VIN
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
0
125
150
300
°C
°C
°C
-65
2
REV. 1.0.3 9/7/01
FAN1086
PRODUCT SPECIFICATION
Electrical Characteristics
Operating Conditions: VIN ≤ 7V, TJ = 25°C unless otherwise specified.
The • denotes specifications which apply over the specified operating temperature range.
Parameter
Conditions
Min.
Typ.
Max. Units
Reference Voltage3
1.5V ≤ (VIN - VOUT) ≤ 5.75V,
10mA ≤ IOUT ≤ 1A
•
1.225
(-2%)
1.250
1.275
(+2%)
V
Output Voltage
10mA ≤ IOUT ≤ 1A
FAN1086-2.5, 4V ≤ VIN ≤ 7V
FAN1086-2.85, 4.35V ≤ VIN ≤ 7V
FAN1086-3.3, 4.8V ≤ VIN ≤ 7V
FAN1086-5, 6.5V ≤ VIN ≤ 7V
•
•
•
•
2.450
2.793
3.234
4.900
2.5
2.85
3.3
2.550
2.907
3.366
5.100
V
V
V
V
5.0
Line Regulation1,2
Load Regulation1,2
Dropout Voltage
(VOUT + 1.5V) ≤ VIN ≤ 7V, IOUT = 10mA
(VIN – VOUT) = 2V, 10mA ≤ IOUT ≤ 1A
∆VREF = 1%, IOUT = 1.5A
•
•
•
•
•
•
0.005
0.05
1.300
2.0
0.2
0.5
%
%
V
1.500
Current Limit
(VIN – VOUT) = 2V
1.6
A
Adjust Pin Current3
Adjust Pin Current Change3
35
120
5
µA
µA
1.5V ≤ (VIN – VOUT) ≤ 5.75,
10mA ≤ IOUT ≤ 1A
0.2
Minimum Load Current
Quiescent Current
Ripple Rejection
1.5V ≤ (VIN – VOUT) ≤ 5.75
•
•
10
60
mA
mA
dB
VIN = VOUT + 1.25V
4
13
f = 120Hz, COUT = 22µF Tantalum,
72
(VIN – VOUT) = 3V, IOUT = 1.5A
Thermal Regulation
Temperature Stability
Long-Term Stability
RMS Output Noise
TA = 25°C, 30ms pulse
0.004
0.5
0.02
1.0
%/W
%
•
TA = 125°C, 1000hrs.
0.03
0.003
%
TA = 25°C, 10Hz ≤ f ≤ 10kHz
%
(% of VOUT
)
Thermal Resistance,
Juncation to Case
SOT-223
15
3
°C/W
°C/W
°C
TO-263, TO-252
Junction Temperature
Thermal Shutdown
155
10
Thermal Shutdown
Hysteresis
°C
Notes:
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.
2. 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.
3. FAN1086 only.
REV. 1.0.3 9/7/01
3
PRODUCT SPECIFICATION
FAN1086
Typical Performance Characteristics
1.5
1.4
0.10
0.05
0
∆I = 1A
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0
-0.05
-0.10
-0.15
-0.20
0
0.3
0.6
0.9
1.2
1.5
-75 -50 -25
0
25 50 75 100 125150 175
OUTPUT CURRENT (A)
JUNCTION TEMPERATURE (°C)
Figure 1. Dropout Voltage vs. Output Current
Figure 2. Load Regulation vs. Temperature
1.250
1.245
1.240
1.235
1.230
1.225
1.220
1.215
1.210
1.205
1.200
3.70
VOUT SET WITH 1% RESISTORS
3.65
VOUT = 3.6V1
3.60
3.55
3.50
3.45
3.40
3.35
VOUT = 3.3V
3.30
3.25
3.20
Note:
1. FAN1086 Only
-75 -50 -25
0
25 50 75 100 125150 175
-75 -50 -25
0
25 50 75 100 125150 175
JUNCTION TEMPERATURE (°C)
JUNCTION TEMPERATURE (°C)
Figure 3. Reference Voltage vs. Temperature
Figure 4. Output Voltage vs. Temperature
5
4
3
2
1
0
100
Note:
90
1. FAN1086 Only
80
70
60
50
40
30
20
10
0
-75 -50 -25
0
25 50 75 100 125150 175
-75 -50 -25
0
25 50 75 100 125150 175
JUNCTION TEMPERATURE (°C)
JUNCTION TEMPERATURE (°C)
Figure 5. Minimum Load Current vs. Temperature
Figure 6. Adjust Pin Current vs. Temperature
4
REV. 1.0.3 9/7/01
FAN1086
PRODUCT SPECIFICATION
Typical Performance Characteristics (continued)
90
80
70
60
50
2.0
1.75
1.5
40
30
1.25
(VIN - VOUT) = 3V
0.5 < VRIPPLE < 2V
IOUT = 1A
20
10
0
1.0
-75 -50 -25
0
25 50 75 100 125150 175
10
100
1K
10K
100K
JUNCTION TEMPERATURE (°C)
FREQUENCY (Hz)
Figure 7. Short-Circuit Current vs. Temperature
Figure 8. Ripple Rejection vs. Frequency
10
7.5
5
TO-263
SOT-223
2.5
0
25
45
65
85
105
125
CASE TEMPERATURE (°C)
Figure 9. Maximum Power Dissipation
REV. 1.0.3 9/7/01
5
PRODUCT SPECIFICATION
FAN1086
Mechanical Dimensions
3-Lead TO-263 Package
Notes:
Inches
Millimeters
1. Dimensions are exclusive of mold flash and metal burrs.
Symbol
Notes
2. Standoff-height is measured from lead tip with ref. to Datum -B-.
3. Foot length is measured with ref. to Datum -A- with lead surface
(at inner R).
4. Dimensiuon exclusive of dambar protrusion or intrusion.
5. Formed leads to be planar with respect to one another at seating
place -C-.
Min.
Max.
Min.
Max.
A
.160
.020
.049
.045
.340
.380
.190
.036
.051
.055
.380
.405
4.06
0.51
1.25
1.14
8.64
9.65
4.83
0.91
1.30
1.40
9.65
10.29
b
b2
c2
D
E
e
.100 BSC
2.54 BSC
L
.575
.090
—
.017
0°
.625
14.61
2.29
—
0.43
0°
15.88
2.79
1.40
0.78
8°
L1
L2
R
.110
.055
.019
8°
α
E
@PKG/
@HEATSINK
L2
c2
D
E-PIN
L
R (2 PLCS)
b2
L1
b
e
-B- -A-
A
-C-
6
REV. 1.0.3 9/7/01
FAN1086
PRODUCT SPECIFICATION
Mechanical Dimensions
4-Lead SOT-223 Package
Inches
Millimeters
Symbol
Notes
Min.
Max.
Min.
Max.
A
A1
B
c
—
—
.071
.181
.033
.090
.264
.148
.124
.041
.287
—
—
—
1.80
4.80
.840
2.29
6.71
3.71
3.15
1.04
7.29
—
.025
—
.640
—
D
E
e
.248
.130
.115
.033
.264
.012
—
6.30
3.30
2.95
.840
6.71
.310
—
F
H
I
10°
10°
J
10°
16°
10°
16°
K
L
.0008
10°
.0040
16°
.0203
10°
.1018
16°
M
N
.010
.014
.250
.360
D
e
K
A
E
H
N
J
I
M
L
B
A1
c
F
REV. 1.0.3 9/7/01
7
PRODUCT SPECIFICATION
FAN1086
Mechanical Dimensions
3-Lead TO-252 Package
Notes:
Inches
Millimeters
Symbol
Notes
1. Dimensions are exclusive of mold flash and metal burrs.
Min.
Max.
Min.
Max.
2. Stand off-height is measured from lead tip with ref. to Datum -B-.
3. Foot length is measured with ref. to Datum -A- with lead surface.
4. Thermal pad contour optional within dimensions b3 and L3
A
.086
.025
.030
.205
.018
.018
.210
.250
.094
.035
.045
.215
.024
.023
.245
.265
2.19
0.64
0.76
5.21
0.46
0.46
5.33
6.35
2.39
0.89
1.14
5.46
0.61
0.58
6.22
6.73
b
b2
b3
c
5. Formed leads to be planar with respect to one another at seating
plane -C-.
4
6. Dimensions and tolerances per ASME Y14.5M-1994.
c2
D
1
1
E
e
.090 BSC
2.29 BSC
H
.370
.055
.410
.070
9.40
1.40
10.41
1.78
L
3
4
L1
L3
L4
.108 REF
2.74 REF
.035
.025
.080
.040
0.89
0.64
2.03
1.02
E
@PKG/
@HEATSINK
L3
b3
c2
D
E-PIN
L4
H
b2
L1
L
c
b
e
α = 0°–10°
-B- -A-
A
-C-
8
REV. 1.0.3 9/7/01
PRODUCT SPECIFICATION
FAN1086
Ordering Information
Product Number
FAN1086D
Package
TO-252
TO-263
SOT-223
TO-252
TO-263
SOT-223
TO-252
TO-263
SOT-223
TO-252
TO-263
SOT-223
TO-252
TO-263
SOT-223
FAN1086M
FAN1086S
FAN1086D-2.5
FAN1086M-2.5
FAN1086S-2.5
FAN1086D-2.85
FAN1086M-2.85
FAN1086S-2.85
FAN1086D-3.3
FAN1086M-3.3
FAN1086S-3.3
FAN1086D-5
FAN1086M-5
FAN1086S-5
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
9/7/01 0.0m 004
Stock#DS30001117
2001 Fairchild Semiconductor Corporation
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