Fairchild FAN1616AS25X 0.5a adjustable/fixed low dropout linear regulator Datasheet

www.fairchildsemi.com
FAN1616A
0.5A Adjustable/Fixed Low Dropout Linear Regulator
Features
Description
•
•
•
•
•
•
•
The FAN1616A, FAN1616A-1.8, -2.5, -3.3 and -5 are low
dropout three-terminal regulators with 0.5A output current
capability. These devices have been optimized for applications where transient response and minimum dropout voltage
are critical. The 5V version is designed also to be used in
USB Hub and Motherboard applications.
Low dropout voltage
Load regulation: 0.05% typical
Current limit
On-chip thermal limiting
Standard SOT-223 and TO-252 packages
Three-terminal adjustable or fixed 1.8V, 2.5V, 3.3V or 5V
Specified from -40°C to +125°C
On-chip thermal limiting provides protection against any
combination of overload and ambient temperature that
would create excessive junction temperatures.
Applications
• USB Controlled Power Supply
• High efficiency linear regulators for Mixed Voltage
Logic, ASIC, FPGA based systems
• Post regulators for switching supplies
• Battery chargers
• 12V to 5V, 3.3V, 2.5V, 1.8V, or adj linear regulators
• Motherboard clock supplies
• SDRAM Module supplies
Unlike PNP type regulators where up to 10% of the output
current is wasted as quiescent current, the bias current of the
FAN1616A flows into the load, increasing efficiency.
The FAN1616A series regulators are available in the
industry-standard SOT-223 and TO-252 power packages.
Typical Applications
FAN1616A
VIN = 12V
VIN
+
VOUT
10µF
R1
124Ω
ADJ
9V at 0.5A
+
22µF
R2
768Ω
VOUT = VREF(1 + R2/R1) + IAdj • R2
FAN1616A-3.3
VIN = 9V
+
VIN
VOUT
10µF
3.3V at 0.5A
+
22µF
GND
REV. 1.0.5 3/1/02
PRODUCT SPECIFICATION
FAN1616A
Pin Assignments
FAN1616AS (Variable)
FAN1616AS-X (Fixed)
FAN1616AD (Variable)
FAN1616AD-X (Fixed)
Front View
Front View
Tab is
OUT
3
IN
2
OUT
1
ADJ/GND
Tab is OUT
1
2
3
4-Lead Plastic SOT-223
ΘJC = 15°C/W*
ADJ/
GND
IN
3-Lead Plastic TO-252
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 >50°C/W. Other mounting techniques may provide better power dissipation than 30°C/W.
Absolute Maximum Ratings
Parameter
Min.
VIN
(VIN–VOUT) * IOUT
Max.
Unit
18
V
See Figure 1
Operating Junction Temperature Range
-40
125
°C
Storage Temperature Range
-65
150
°C
300
°C
Lead Temperature (Soldering, 10 sec.)
0.6
IOUT (A)
0.5
0.4
0.3
0.2
0.1
0
0
2
4
6
8
10
12
VIN – VOUT (V)
Figure 1. Absolute Maximum Safe Operating Area
2
REV. 1.0.5 3/1/02
FAN1616A
PRODUCT SPECIFICATION
Electrical Characteristics
Operating Conditions: VIN ≤ 12V, TJ = 25°C unless otherwise specified.
The • denotes specifications which apply over the specified operating temperature range.
Parameter
Conditions
Voltage3
1.5V ≤ (VIN - VOUT) ≤ 5.75V,
10mA ≤ IOUT ≤ 0.5A
Reference
Output Voltage4
Line Regulation1,2
Load
Regulation1,2,3
Dropout Voltage
Min.
Typ.
Max.
Units
•
1.225
(-2%)
1.250
1.275
(+2%)
V
10mA ≤ IOUT ≤ 0.5A
FAN1616A-1.8, 3.3V ≤ VIN ≤ 12V
FAN1616A-2.5, 4.0V ≤ VIN ≤ 12V
FAN1616A-3.3, 4.5V ≤ VIN ≤ 12V
FAN1616A-5, 6.2V ≤ VIN ≤ 12V
•
•
•
•
1.764
2.450
3.234
4.900
1.800
2.500
3.300
5.000
1.836
2.550
3.366
5.100
V
V
V
V
(VOUT + 1.5V) ≤ VIN ≤ 12V, IOUT = 10mA
•
0.005
0.2
%
(VIN – VOUT) = 2V, 10mA ≤ IOUT ≤ 0.5A
•
0.05
0.5
%
∆VREF = 1%, IOUT = 0.5A
•
1.000
1.200
V
Current3
•
35
120
µA
Adjust Pin Current Change3, 4 1.5V ≤ (VIN – VOUT) ≤ 12V,
10mA ≤ IOUT ≤ 0.5A
•
0.2
5
µA
Minimum Load Current
1.5V ≤ (VIN – VOUT) ≤ 12V
•
Quiescent Current
VIN = VOUT + 1.25V
•
Ripple Rejection
f = 120Hz, COUT = 22µF Tantalum,
(VIN – VOUT) = 3V, IOUT = 0.5A
Thermal Regulation
TA = 25°C, 30ms pulse
Adjust Pin
mA
4
60
13
72
0.004
•
Temperature Stability
10
mA
dB
0.02
0.5
%/W
%
Long-Term Stability
TA = 125°C, 1000hrs.
0.03
RMS Output Noise
(% of VOUT)
TA = 25°C, 10Hz ≤ f ≤ 10kHz
0.003
%
Thermal Resistance,
Juncation to Case
SOT-223
15
°C/W
TO-252
3
°C/W
150
°C
Thermal Shutdown
1.0
%
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. FAN1616A only.
4. Output current must be limited to meet the absolute maximum ratings of the part.
REV. 1.0.5 3/1/02
3
PRODUCT SPECIFICATION
FAN1616A
Typical Performance Characteristics
0.10
OUTPUT VOLTAGE DEVIATION (%)
DROPOUT VOLTAGE (V)
1.5
1.4
1.3
1.2
1.1
1.0
TJ = 0°C
TJ = 25°C
0.9
0.8
TJ = 125°C
0.7
0.6
0.5
0
0
0.2
0.4
0.6
0.8
0.05
0
-0.05
-0.10
-0.15
-0.20
-75 -50 -25 0
1.0
OUTPUT CURRENT (A)
3.70
1.255
3.65
1.250
3.60
1.235
Note:
1. FAN1616A Only
1.230
1.225
1.220
OUTPUT VOLTAGE (V)
REFERENCE VOLTAGE (V)
Figure 3. Load Regulation vs. Temperature
1.260
1.240
VOUT SET WITH 1% RESISTORS
VOUT = 3.6V1
3.55
3.50
3.45
3.40
3.35
VOUT = 3.3V
3.30
1.215
3.25
1.210
-75 -50 -25 0
3.20
-75 -50 -25 0
25 50 75 100 125 150 175
JUNCTION TEMPERATURE (°C)
Figure 5. Output Voltage vs. Temperature
5
100
Note:
1. FAN1616A Only
90
ADJUST PIN CURRENT (µA)
MINIMUM LOAD CURRENT (mA)
Note:
1. FAN1616A Only
25 50 75 100 125 150 175
JUNCTION TEMPERATURE (°C)
Figure 4. Reference Voltage vs. Temperature
4
3
2
1
80
70
60
50
40
30
20
10
0
-75 -50 -25 0
25 50 75 100 125 150 175
JUNCTION TEMPERATURE (°C)
Figure 6. Minimum Load Current vs. Temperature
4
25 50 75 100 125 150 175
JUNCTION TEMPERATURE (°C)
Figure 2. Dropout Voltage vs. Output Current
1.245
∆I = 0.5A
0
-75 -50 -25 0
25 50 75 100 125 150 175
JUNCTION TEMPERATURE (°C)
Figure 7. Adjust Pin Current vs. Temperature
REV. 1.0.5 3/1/02
FAN1616A
PRODUCT SPECIFICATION
Typical Performance Characteristics (continued)
90
4
TO-252
70
3
60
POWER (W)
RIPPLE REJECTION (dB)
80
50
40
2
SOT-223
30
20
10
1
(VIN - VOUT) ≤ 3V
0.5 ≤ VRIPPLE ≤ 2V
IOUT = 0.5A
0
10
100
1K
10K
100K
FREQUENCY (Hz)
Figure 8. Ripple Rejection vs. Frequency
REV. 1.0.5 3/1/02
0
50
60 70 80 90 100 110 120 130 140 150
CASE TEMPERATURE (°C)
Figure 9. Maximum Power Dissipation
5
PRODUCT SPECIFICATION
FAN1616A
Mechanical Dimensions
3-Lead TO-252 Package
Symbol
Inches
Millimeters
Notes:
Notes
Min.
Max.
Min.
Max.
A
b
b2
b3
c
c2
.086
.025
.030
.205
.018
.018
.094
.035
2.19
0.64
0.76
5.21
0.46
0.46
2.39
0.89
D
E
e
H
5.33
6.22
6.35
6.73
2.29 BSC
9.40
10.41
1.40
1.78
2.74 REF
1
L
L1
.210
.245
.250
.265
.090 BSC
.370
.410
.055
.070
.108 REF
L3
L4
.035
.025
0.89
0.64
4
.045
.215
.024
.023
.080
.040
1.14
5.46
0.61
0.58
2.03
1.02
E
@PKG/
@HEATSINK
b3
4
1
1.
Dimensions are exclusive of mold flash, metal burrs or interlead
protrusion.
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 dimension b3 and L3.
5.
Formed leads to be planar with respect to one another at seating
place -C-.
6.
Dimensions and tolerances per ASME Y14.5M-1994.
3
L3
c2
D
E-PIN
H
L4
b2
L1
L
b
e
-B-
α = 0° – 10°
-A-
A
-C-
6
REV. 1.0.5 3/1/02
FAN1616A
PRODUCT SPECIFICATION
Mechanical Dimensions
4-Lead SOT-223 Package
Inches
Symbol
A
A1
B
c
D
E
e
F
H
I
J
K
L
M
N
Millimeters
Min.
Max.
Min.
Max.
—
—
.025
—
.248
.130
.071
.181
1.80
4.80
.033
.090
.264
.148
—
—
.640
—
6.30
3.30
.840
2.29
6.71
3.71
.115
.033
.264
.012
—
10°
.0008
10°
.010
.124
.041
.287
—
10°
16°
.0040
16°
.014
2.95
.840
6.71
.310
—
10°
.0203
10°
.250
3.15
1.04
7.29
—
10°
16°
.1018
16°
.360
Notes
D
e
K
A
H
E
N
J
M
B
I
L
A1
c
REV. 1.0.5 3/1/02
F
7
PRODUCT SPECIFICATION
FAN1616A
Ordering Information
Product Number
Package
FAN1616ADX
TO-252 in tape and reel
FAN1616ASX
SOT-223 in tape and reel
FAN1616AD18X
TO-252 in tape and reel
FAN1616AS18X
SOT-223 in tape and reel
FAN1616AD25X
TO-252 in tape and reel
FAN1616AS25X
SOT-223 in tape and reel
FAN1616AD33X
TO-252 in tape and reel
FAN1616AS33X
SOT-223 in tape and reel
FAN1616AD5X
TO-252 in tape and reel
FAN1616AS5X
SOT-223 in tape and reel
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO
ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME
ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN;
NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
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.
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