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Datasheet> All Categories > Power/power management> The power supply circuit> FAN1117AM-2.85
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FAN1117AM-2.85

Description
Fixed Positive LDO Regulator, 2.85V, 1.2V Dropout, BIPolar, PSSO3, PLASTIC, TO-263, 3 PIN
CategoryPower/power management    The power supply circuit   
File Size46KB，9 Pages
ManufacturerFairchild
Websitehttp://www.fairchildsemi.com/
Download Datasheet Parametric Compare View All

FAN1117AM-2.85 Overview

Fixed Positive LDO Regulator, 2.85V, 1.2V Dropout, BIPolar, PSSO3, PLASTIC, TO-263, 3 PIN

FAN1117AM-2.85 Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerFairchild
Parts packaging codeD2PAK
package instructionTO-263, SMSIP3H,.55TB
Contacts4
Reach Compliance Codecompliant
ECCN codeEAR99
AdjustabilityFIXED
Maximum drop-back voltage 11.2 V
Nominal dropback voltage 11.1 V
Maximum absolute input voltage13.2 V
Maximum input voltage12 V
Minimum input voltage4.35 V
JESD-30 codeR-PSSO-G3
JESD-609 codee0
length9.97 mm
Maximum grid adjustment rate0.0057%
Maximum load regulation0.01425%
Number of functions1
Output times1
Number of terminals3
Working temperatureTJ-Max125 °C
Working temperature TJ-Min
Maximum output current 11 A
Maximum output voltage 12.907 V
Minimum output voltage 12.793 V
Nominal output voltage 12.85 V
Package body materialPLASTIC/EPOXY
encapsulated codeTO-263
Encapsulate equivalent codeSMSIP3H,.55TB
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Certification statusNot Qualified
Regulator typeFIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Maximum seat height4.6 mm
surface mountYES
technologyBIPOLAR
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch2.54 mm
Terminal locationSINGLE
Maximum voltage tolerance2%
width9.145 mm

FAN1117AM-2.85 Preview

www.fairchildsemi.com
FAN1117A
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-263, and TO-252 packages
Three-terminal adjustable or fixed 2.5V, 2.85V, 3.3V, 5V
Description
The FAN1117A and FAN1117A-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 indus-
try-standard SOT-223, TO-263 (D2PAK) and TO-252
(DPAK) power packages.
Applications
•
•
•
•
•
•
Active SCSI terminators
High efficiency linear regulators
Post regulators for switching supplies
Battery chargers
12V to 5V linear regulators
Motherboard clock supplies
Typical Applications
FAN1117A
V
IN
= 12V
10µF
ADJ
124Ω
+
V
IN
V
OUT
+
22µF
9V at 1A
768Ω
FAN1117A-2.85
V
IN
= 12V
10µF
GND
+
V
IN
V
OUT
+
22µF
5V at 1A
REV. 1.0.0 10/13/00
PRODUCT SPECIFICATION
FAN1117A
Pin Assignments
Front View
3
Tab is
V
OUT
2
1
IN
OUT
ADJ/GND
1
2
3
Tab is
V
OUT
Tab is
V
OUT
4-Lead Plastic SOT-223
Θ
JC
= 15°C/W*
1
2
3
ADJ/
GND
OUT
IN
ADJ/ OUT
GND
IN
3-Lead Plastic TO-263
Θ
JC
= 3°C/W*
3-Lead Plastic TO-252
Θ
JC
= 3°C/W*
*With package soldered to 0.5 square inch copper area over backside ground plane or internal power plane.,
Θ
JA
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
V
IN
(V
IN
– V
OUT
) * I
OUT
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
0
-65
Min.
Max.
13.2
See Figure 1
125
150
300
°
C
°
C
°
C
Unit
V
1.2
1.0
I
OUT
(A)
0.8
0.6
0.4
0.2
0
0
2
4
6
8
10
12
14
V
IN
– V
OUT
(V)
Figure 1. Absolute Maximum Safe Operating Area
2
REV. 1.0.0 10/13/00
FAN1117A
PRODUCT SPECIFICATION
Electrical Characteristics
Operating Conditions: V
IN
≤
7V, T
J
= 25°C unless otherwise specified.
The
•
denotes specifications which apply over the specified operating temperature range.
Parameter
Reference
Voltage
3
Conditions
1.5V
≤
(V
IN
- V
OUT
)
≤
5.75V,
10mA
≤
I
OUT
≤
1A
10mA
≤
I
OUT
≤
1A
FAN1117A-2.5, 4V
≤
V
IN
≤
12V
FAN1117A-2.85, 4.35V
≤
V
IN
≤
12V
FAN1117A-3.3, 4.8V
≤
V
IN
≤
12V
FAN1117A-5, 6.5V
≤
V
IN
≤
12V
(V
OUT
+ 1.5V)
≤
V
IN
≤
12V, I
OUT
= 10mA
(V
IN
– V
OUT
) = 2V, 10mA
≤
I
OUT
≤
1A
∆
V
REF
= 1%, I
OUT
= 1A
(V
IN
– V
OUT
) = 2V
•
Min.
1.225
(-2%)
2.450
2.793
3.234
4.900
Typ.
1.250
Max.
1.275
(+2%)
2.550
2.907
3.366
5.100
0.2
0.5
1.200
120
5
Units
V
Output Voltage
4
•
•
•
•
•
•
•
•
•
•
•
•
2.5
2.85
3.3
5.0
0.005
0.05
1.100
V
V
V
V
%
%
V
A
µ
A
µ
A
mA
Line Regulation
1,2
Load Regulation
1,2
Dropout Voltage
Current Limit
Adjust Pin Current
3
1.1
1.5
35
0.2
Adjust Pin Current Change
3,4
1.5V
≤
(V
IN
– V
OUT
)
≤
12V,
10mA
≤
I
OUT
≤
1A
Minimum Load Current
Quiescent Current
Ripple Rejection
Thermal Regulation
Temperature Stability
Long-Term Stability
RMS Output Noise
(% of V
OUT
)
T
A
= 125
°
C, 1000hrs.
T
A
= 25
°
C, 10Hz
≤
f
≤
10kHz
1.5V
≤
(V
IN
– V
OUT
)
≤
12V
V
IN
= V
OUT
+ 1.25V
f = 120Hz, C
OUT
= 22
µ
F Tantalum,
(V
IN
– V
OUT
) = 3V, I
OUT
= 1A
T
A
= 25
°
C, 30ms pulse
10
4
60
72
0.004
0.02
1.0
13
mA
dB
%/W
%
%
%
°
C/W
°
C/W
°
C
°
C
•
0.5
0.03
0.003
15
3
155
10
Thermal Resistance, Junction SOT-223
to Case
TO-263, TO-252
Thermal Shutdown
Thermal Shutdown
Hysteresis
Junction Temperature
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. 1.0.0 10/13/00
3
PRODUCT SPECIFICATION
FAN1117A
Typical Performance Characteristics
DROPOUT VOLTAGE DEVIATION (%)
1.5
1.4
DROPOUT VOLTAGE (V)
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0
0
0.2
0.4
0.6
0.8
1.0
T
J
= 25°C
T
J
= 125°C
T
J
= 0°C
0.10
0.05
0
-0.05
-0.10
-0.15
-0.20
-75 -50 -25 0
∆I
= 1A
25 50 75 100 125 150 175
OUTPUT CURRENT (A)
JUNCTION TEMPERATURE (°C)
Figure 2. Dropout Voltage vs. Output Current
1.260
1.255
REFERENCE VOLTAGE (V)
REFERENCE VOLTAGE (V)
1.250
1.245
1.240
1.235
1.230
1.225
1.220
1.215
1.210
-75 -50 -25 0
25 50 75 100 125 150 175
Figure 3. Load Regulation vs. Temperature
3.70
3.65
3.60
3.55
3.50
3.45
3.40
3.35
3.30
3.25
V
OUT
= 3.3V
V
OUT
SET WITH 1% RESISTORS
V
OUT
= 3.6V
1
Note:
1. FAN1117A Only
3.20
-75 -50 -25 0 25 50 75 100 125 150 175
JUNCTION TEMPERATURE (°C)
JUNCTION TEMPERATURE (°C)
Figure 4. Reference Voltage vs. Temperature
5
MINIMUM LOAD CURRENT (mA)
ADJUST PIN CURRENT (µA)
Figure 5. Output Voltage vs. Temperature
100
90
Note:
1. FAN1117A Only
4
80
70
60
50
40
30
20
10
3
2
1
0
-75 -50 -25 0
25 50 75 100 125 150 175
0
-75 -50 -25 0
25 50 75 100 125 150 175
JUNCTION TEMPERATURE (°C)
JUNCTION TEMPERATURE (°C)
Figure 6. Minimum Load Current vs. Temperature
Figure 7. Adjust Pin Current vs. Temperature
4
REV. 1.0.0 10/13/00
FAN1117A
PRODUCT SPECIFICATION
Typical Performance Characteristics
(continued)
2.0
SHORT-CIRCUIT CURRENT (A)
90
80
RIPPLE REJECTION (dB)
1.75
70
60
50
40
30
20
10
1.0
-75 -50 -25 0
25 50 75 100 125 150 175
0
10
(V
IN
- V
OUT
) = 3V
0.5 < V
RIPPLE
< 2V
I
OUT
= 1A
100
1K
10K
100K
1.5
1.25
JUNCTION TEMPERATURE (¡C)
FREQUENCY (Hz)
Figure 8. Short-Circuit Current vs. Temperature
Figure 9. Ripple Rejection vs. Frequency
10
7.5
POWER (W)
TO-263 & TO-252
5
2.5
SOT-223
0
25
45
65
85
105
125
CASE TEMPERATURE (¡C)
Figure 10. Maximum Power Dissipation
REV. 1.0.0 10/13/00
5
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FAN1117AM-2.85 Related Products

FAN1117AM-2.85 FAN1117AM FAN1117AM-3.3 FAN1117AM-2.5 FAN1117AM-5
Description Fixed Positive LDO Regulator, 2.85V, 1.2V Dropout, BIPolar, PSSO3, PLASTIC, TO-263, 3 PIN Adjustable Positive LDO Regulator, 2.5V Min, 5V Max, 1.2V Dropout, BIPolar, PSSO3, POWER, PLASTIC, TO-263, 3 PIN Fixed Positive LDO Regulator, 3.3V, 1.2V Dropout, BIPolar, PSSO3, PLASTIC, TO-263, 3 PIN Fixed Positive LDO Regulator, 2.5V, 1.2V Dropout, BIPolar, PSSO3, PLASTIC, TO-263, 3 PIN Fixed Positive LDO Regulator, 5V, 1.2V Dropout, BIPolar, PSSO3, PLASTIC, TO-263, 3 PIN
Is it Rohs certified? incompatible incompatible incompatible incompatible incompatible
Maker Fairchild Fairchild Fairchild Fairchild Fairchild
Parts packaging code D2PAK D2PAK D2PAK D2PAK D2PAK
package instruction TO-263, SMSIP3H,.55TB TO-263, SMSIP3H,.38,90TB PLASTIC, TO-263, 3 PIN TO-263, SMSIP3H,.55TB TO-263, SMSIP3H,.55TB
Contacts 4 4 4 4 4
Reach Compliance Code compliant compliant compliant compliant compliant
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99
Adjustability FIXED ADJUSTABLE FIXED FIXED FIXED
Maximum drop-back voltage 1 1.2 V 1.2 V 1.2 V 1.2 V 1.2 V
Nominal dropback voltage 1 1.1 V 1.2 V 1.1 V 1.1 V 1.1 V
JESD-30 code R-PSSO-G3 R-PSSO-G3 R-PSSO-G3 R-PSSO-G3 R-PSSO-G3
JESD-609 code e0 e0 e0 e0 e0
length 9.97 mm 9.97 mm 9.97 mm 9.97 mm 9.97 mm
Number of functions 1 1 1 1 1
Output times 1 1 1 1 1
Number of terminals 3 3 3 3 3
Working temperatureTJ-Max 125 °C 125 °C 125 °C 125 °C 125 °C
Maximum output current 1 1 A 1 A 1 A 1 A 1 A
Maximum output voltage 1 2.907 V 5 V 3.366 V 2.55 V 5.1 V
Minimum output voltage 1 2.793 V 2.5 V 3.234 V 2.45 V 4.9 V
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code TO-263 TO-263 TO-263 TO-263 TO-263
Encapsulate equivalent code SMSIP3H,.55TB SMSIP3H,.38,90TB SMSIP3H,.55TB SMSIP3H,.55TB SMSIP3H,.55TB
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Regulator type FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Maximum seat height 4.6 mm 4.826 mm 4.6 mm 4.6 mm 4.6 mm
surface mount YES YES YES YES YES
technology BIPOLAR BIPOLAR BIPOLAR BIPOLAR BIPOLAR
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal pitch 2.54 mm 2.54 mm 2.54 mm 2.54 mm 2.54 mm
Terminal location SINGLE SINGLE SINGLE SINGLE SINGLE
width 9.145 mm 9.145 mm 9.145 mm 9.145 mm 9.145 mm
Maximum absolute input voltage 13.2 V - 13.2 V 13.2 V 13.2 V
Maximum input voltage 12 V - 12 V 12 V 12 V
Minimum input voltage 4.35 V - 4.8 V 4 V 6.5 V
Maximum grid adjustment rate 0.0057% - 0.0066% 0.005% 0.01%
Maximum load regulation 0.01425% - 0.0165% 0.0125% 0.025%
Nominal output voltage 1 2.85 V - 3.3 V 2.5 V 5 V
Maximum voltage tolerance 2% - 2% 2% 2%

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