FAN1117AT33. 1117AT33 Datasheet

1117AT33 FAN1117AT33. Datasheet pdf. Equivalent

1117AT33 Datasheet
Recommendation 1117AT33 Datasheet
Part 1117AT33
Description FAN1117AT33
Feature 1117AT33; www.fairchildsemi.com www.DataSheet4U.com FAN1117A 1A Adjustable/Fixed Low Dropout Linear Regulato.
Manufacture Fairchild Semiconductor
Datasheet
Download 1117AT33 Datasheet




Fairchild Semiconductor 1117AT33
www.fairchildsemi.com
FAN1117Awww.DataSheet4U.com
1A Adjustable/Fixed Low Dropout Linear Regulator
Features
• Low dropout voltage
• Load regulation: 0.05% typical
• Trimmed current limit
• On-chip thermal limiting
• Standard SOT-223, TO-220, and TO-252 packages
• 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 chargers
• 12V to 5V linear regulators
• Motherboard clock supplies
Description
The FAN1117A and FAN1117A-1.8, -2.5, -2.85, -3.3 and -5
are low dropout three-terminal regulators with 1A 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.
Unlike PNP type regulators where up to 10% of the output
current is wasted as quiescent current, the quiescent current
of the FAN1117A flows into the load, increasing efficiency.
The FAN1117A series regulators are available in the
industry-standard SOT-223, TO-220, and TO-252 (DPAK)
power packages.
Typical Applications
VIN = 12V
10µF
+
FAN1117A
VIN VOUT
ADJ
VOUT = VREF(1 + R2/R1) + IADJ • R2
R1
124
+ 9V at 1A
22µF
R2
768
VIN = 12V
10µF
+
FAN1117A-5
VIN VOUT
GND
+ 5V at 1A
22µF
REV. 1.1.0 11/7/03



Fairchild Semiconductor 1117AT33
PRODUCT SPECIFICATION
Pin Assignments
www.DataSheet4U.com
FAN1117A
Front View
Tab is VOUT
Tab is
VOUT
Front View
3
2
1
IN
OUT
ADJ/GND
4-Lead Plastic SOT-223
ΘJC = 15°C/W*
Front View
Tab is VOUT
123
ADJ/ OUT IN
GND
3-Lead Plastic TO-252
ΘJC = 3°C/W*
12 3
ADJ/ OUT IN
GND
3-Lead Plastic TO-220
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
VIN
(VIN – VOUT) * IOUT
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
Min.
0
-65
Max.
18
See Figure 1
125
150
300
Unit
V
°C
°C
°C
1.2
1.0
0.8
0.6
0.4
0.2
0
0
24
6 8 10 12 14 16
VIN VOUT (V)
Figure 1. Absolute Maximum Safe Operating Area
18 20
2 REV. 1.1.0 11/7/03



Fairchild Semiconductor 1117AT33
FAN1117A
PRODUCT SPECIFICATION
Electrical Characteristics
wwOwp.DeartaatSinhgeeCt4oUn.cdoitmions: VIN 7V, TJ = 25°C unless otherwise specied.
The denotes specications which apply over the specied operating temperature range.
Parameter
Reference Voltage3
Output Voltage4
Line Regulation1,2
Load Regulation1,2
Dropout Voltage
Current Limit
Adjust Pin Current3
Adjust Pin Current Change3,4
Minimum Load Current
Quiescent Current
Ripple Rejection
Thermal Regulation
Temperature Stability
Long-Term Stability
RMS Output Noise
(% of VOUT)
Thermal Resistance, Junction
to Case
Thermal Shutdown
Thermal Shutdown
Hysteresis
Conditions
1.5V (VIN VOUT) 7V,
10mA IOUT 1A
10mA IOUT 1A
FAN1117A-1.8, 3.3V VIN 8.8V
FAN1117A-2.5, 4V VIN 9.5V
FAN1117A-2.85, 4.35V VIN 9.85V
FAN1117A-3.3, 4.8V VIN 10.3V
FAN1117A-5, 6.5V VIN 12V
(VOUT + 1.5V) VIN 12V, IOUT = 10mA
(VIN VOUT) = 2V, 10mA IOUT 1A
VREF = 1%, IOUT = 1A
(VIN VOUT) = 2V
1.5V (VIN VOUT) 7V,
10mA IOUT 1A
1.5V (VIN VOUT) 15V
VIN = VOUT + 1.25V
f = 120Hz, COUT = 22µF Tantalum,
(VIN VOUT) = 3V, IOUT = 1A
TA = 25°C, 30ms pulse
TA = 125°C, 1000hrs.
TA = 25°C, 10Hz f 10kHz
SOT-223
TO-252, TO-220
Junction Temperature
Min.
1.225
(-2%)
1.764
2.450
2.793
3.234
4.900
1.1
10
60
Typ.
1.250
1.8
2.5
2.85
3.3
5.0
0.005
0.05
1.100
1.5
35
0.2
4
72
0.004
0.5
0.03
0.003
15
3
155
10
Max.
1.275
(+2%)
Units
V
1.836
2.550
2.907
3.366
5.100
0.2
0.5
1.200
120
5
V
V
V
V
V
%
%
V
A
µA
µA
mA
13 mA
dB
0.02 %/W
%
1.0 %
%
°C/W
°C/W
°C
°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 (18W). 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. FAN1117A only.
4. Output current must be limited to meet the absolute maximum ratings of the part.
REV. 1.1.0 11/7/03
3







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