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Solved by
SP1085
TM
3A Low Dropout Linear Regulator
features
Low Dropout Voltage: Typical 1.3V at 3A Current Limiting and Thermal Protection Output Current: 3A Current Limit: 4.5A Operating Junction Temperature: 0 to 125oC Line Regulation: 0.015% (Typical) Load Regulation: 0.1% (Typical) Available in RoHS Compliant, Lead Free Packaging TO-220
3 2 1 INPUT OUTPUT ADJ/GND
Applications
High Efficiency Linear Regulators Battery Charger Post Regulation for Switching Supplies Microprocessor Supply Mother Board Power Supplies DVD - Video Player Telecom Equipment Set Top Boxes and Web Box Modular Supplies
general Description
The SP1085 is a series of low dropout positive voltage regulators with a maximum dropout of 1.5V at 3A of load current. The series features on-chip thermal shutdown. It also includes a bandgap reference and a current limiting circuit. The SP1085 is available in 1.5V, 1.8V, 2.5V, 2.85V, 3.3V, 5.0V and adjustable versions. The fixed versions integrate the adjust resistors. The adjustable version can set the output voltage with two external resistors. The SP1085 series is available in standard packages of TO-263-3L, TO-220 and TO-252.
TO-263-3L
TO-252
Figure . Package Types of SP085
TO-220
Date: 7/24/06 Rev H
SP085 3A Low Dropout Linear Regulator
(c) 2006 Sipex Corporation
Pin configuration
V Package (TO-220)
3 2 1 INPUT OUTPUT ADJ/GND 1 ADJ/GND
V2 Package (TO-252)
3 INPUT
2
OUTPUT
V1 Package (TO-263-3L)
3 2 1 INPUT OUTPUT ADJ/GND
Figure 2. Pin Configuration of SP085 (Top View)
functional Block Diagram
INPUT
Thermal Protection
+
OUTPUT
A B
A2
For Adjustable Output, disconnect A and A2, connect B For Fixed Output, connect A and A2, disconnect B ADJ/ GND
Figure 3. Functional Block Diagram of SP085
Date: 7/24/06 Rev H SP085 3A Low Dropout Linear Regulator (c) 2006 Sipex Corporation
2
Absolute maximum Ratings (note 1)
Parameter Operating Junction Temperature Storage Temperature Lead Temperature (Soldering, 10 sec.) ESD (Human Body Model) Symbol TJ TS TLEAD ESD -65 Min Max 150 150 300 2000 Unit
oC o o
C C
V
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under"Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability.
Recommended operating conditions
Parameter Input Voltage Operating Junction Temperature Range Symbol VIN TJ 0 Min Max 12 125 Unit V
o
C
Date: 7/24/06 Rev H
SP085 3A Low Dropout Linear Regulator
(c) 2006 Sipex Corporation
3
electrical characteristics
Typicals and limits appearing in normal type apply for TJ = 25oC. Limits appearing in Boldface type apply over the entire operating junction temperature range 0 to 125oC.
Parameter Reference Voltage Symbol VREF Conditions SP1085-ADJ, IOUT=10mA,VIN -VOUT = 3V, TJ = 25oC, 10mA IOUT 3A, 1.5V VIN - VOUT 5V SP1085-1.5, IOUT =0mA, VIN = 4.5V, TJ = 25oC, 10mA IOUT 3A, 3.1V VIN 6V SP1085-1.8, IOUT = 0mA, VIN = 4.8V, TJ = 25oC, 10mA IOUT A, 3.4V VIN 7V Output Voltage VOUT SP1085-2.5, IOUT = 0mA, VIN = 5.5V, TJ = 25oC, 10mA IOUT 3A, 4.1V VIN 7V SP1085-2.85, IOUT = 0mA, VIN = 6V, TJ = 25oC, 10mA IOUT 3A, 4.5V VIN 8V SP1085-3.3, IOUT = 0mA, VIN = 6.3V, TJ = 25oC, 10mA IOUT 3A, 4.9V VIN 8V SP1085-5.0, IOUT = 0mA, VIN = 8V, TJ = 25oC, 10mA IOUT 3A, 6.6V VIN 10V SP1085-ADJ, SP1085-1.5, SP1085-1.8, SP1085-2.5, SP1085-2.85, SP1085-3.3, IOUT = 10mA, 2.85V VIN 10V IOUT = 10mA, 3.1V VIN 10V IOUT = 10mA, 3.4V VIN 10V IOUT = 10mA, 4.1V VIN 10V IOUT = 10mA, 4.5V VIN 10V IOUT = 10mA, 4.9V VIN 10V Min 1.238 1.225 Typ 1.250 1.250 Max 1.262 1.275 Unit V
1.485 1.47 1.782 1.764 2.475 2.45 2.821 2.793 3.267 3.234 4.95 4.9
1.5 1.5 1.8 1.8 2.5 2.5 2.85 2.85 3.3 3.3 5 5 0.015 0.035 0.5 1 0.5 1 0.5 1 0.5 1 0.5 1
1.515 1.53 1.818 1.836 2.525 2.55 2.879 2.907 3.333 3.366 5.05 5.1 0.2 0.2 6 6 6 6 6 6 6 6 6 6
V
V
V
V
V
V % mV mV mV mV mV
Line Regulation
VOUT
Date: 7/24/06 Rev H
SP085 3A Low Dropout Linear Regulator
(c) 2006 Sipex Corporation
4
electrical characteristics (continued)
Typicals and limits appearing in normal type apply for TJ = 25oC. Limits appearing in Boldface type apply over the entire operating junction temperature range 0 to 125oC.
Parameter Symbol Conditions SP1085-5.0, SP1085-ADJ, SP1085-1.5, SP1085-1.8, SP1085-2.5, SP1085-2.85, SP1085-3.3, SP1085-5.0, Dropout Voltage Current Limit Minimum Load Current Quiescent Current Ripple Rejection Adjust Pin Current Adjust Pin Current Change Long Term Stability Temperature Stability RMS Noise (% of VOUT) Thermal Resistance Junction-to-Case
JC
Min IOUT = 10mA, 6.6V VIN 10V 0mA IOUT 3A, VIN - VOUT = 3V 0mA IOUT 3A, VIN - VOUT = 3V 0mA IOUT 3A, VIN - VOUT = 3V 0mA IOUT 3A, VIN - VOUT = 3V 0mA IOUT 3A, VIN - VOUT = 3V 0mA IOUT 3A, VIN - VOUT = 3V 0mA IOUT 3A, VIN - VOUT = 3V
Typ 0.5 1 0.1 0.2 3 7 3 7 3 7 3 7 3 7 5 10 1.3
Max 10 10 0.3 0.4 15 20 15 20 15 20 15 20 15 20 20 35 1.5
Unit mV % mV mV mV mV mV mV V A
Load Regulation
VOUT
IO = 3A, VREF, VOUT = 1% ILIMIT VIN - VOUT = 3V, VIN = 10V (SP1085-ADJ) VIN = 10V (SP1085) fRIPPLE = 120Hz, COUT = 25 F Tantalum, IOUT = 3A, VIN - VOUT = 3V VIN = 4.25V, IOUT = 10mA 10mA IOUT A, 1.5V VIN -VOUT 6V TA = 125oC, 1000Hrs IOUT = 10mA, VIN - VOUT = 1.5V TA = 25 C, 10Hz TO-263 TO-220 TO-252
o
3.2
4.5 3 5 10 10
mA mA dB
60
72 55 0.2 0.5 0.5 0.003 3 3 4 120 5
A A % % %
oC
f
10kHz
/W
Date: 7/24/06 Rev H
SP085 3A Low Dropout Linear Regulator
(c) 2006 Sipex Corporation
5
typical Performance characteristics
5
5 4
4
Load Regulation (mV)
0 25 50 75 00 25
Line Regulation (mV)
3 2 0 - -2 -3 -4
3
2
0
-
-5
0
25
50
75
00
25
TA ( C)
o
TA ( C)
o
Figure 4. Line Regulation vs. Temperature
Figure 5. Load Regulation vs. Temperature
.20
2.53
2.52
Dropout Voltage (V)
Output Voltage (V)
0 25 50 75 00 25
.5
2.5
.0
2.50
2.4
.05
2.48
.00
2.47
0
25
50
75
00
25
TA( C)
o
TA ( C)
o
Figure 6. Dropout Voltage vs. Temperature
Figure 7. Output Voltage vs. Temperature
Date: 7/24/06 Rev H
SP085 3A Low Dropout Linear Regulator
(c) 2006 Sipex Corporation
6
typical Performance characteristics (continued)
7 6 5 4 3 2 0
.30 .25 .20
Short Circuit Current (A)
Dropout Voltage (V)
0 2 4 6 8 0 2
.5 .0 .05 .00 0.5 0.0 0.85 0.80 0.0 0.5 .0 .5 2.0 2.5 3.0
Dropout Voltage (V)
Output Current (A)
Figure 8. Short Circuit Current vs. Dropout Voltage
Figure . Dropout Voltage vs. Output Current
.28 .27
Reference Voltage (V)
.26 .25 .24 .23 .22 .2 .20
0
25
50
75
00
25
TA ( C)
o
Figure0. Reference Voltage vs. Temperature
Figure . Load Transient Response
Date: 7/24/06 Rev H
SP085 3A Low Dropout Linear Regulator
(c) 2006 Sipex Corporation
7
APPLicAtion infoRmAtion
typical Performance characteristics (continued)
Figure 2. Line Transient Response
typical Application
VIN 10 F Tantalum
SP1085-ADJ
VOUT VOUT
+
VIN ADJ
+
R1 120
22 F Tantalum
VOUT=VREF* (+R2/R) + IADJ * R2
R2
VIN 10 F Tantalum
SP1085-5.0
+
VIN
GND
VOUT
VOUT
+
22 F Tantalum
Figure 3. Typical Applications of SP085
Date: 7/24/06 Rev H SP085 3A Low Dropout Linear Regulator (c) 2006 Sipex Corporation
8
PAckAge: 3 Pin to-263
mechanical Dimensions (continued) to-263-3L Unit: mm(inch)
4.070(0.60) 4.820(0.0)
3
.650(0.380) 0.20(0.405) 8.840(0.348)
70
.270(0.050) .30(0.055)
.50(0.045) .30(0.055) 7
7.420(0.22)
8.640(0.340) .650(0.380)
0.020(0.00) 0.250(0.00)
4.760(0.58) 5.740(0.620)
.50(0.045) .30(0.055) 0.50(0.020) 0.0(0.03) 2.540(0.00) 2.540(0.00)
2.30(0.04) 2.60(0.06)
3
2.640(0.04) 2.700(0.06) 0.360(0.04) 0.400(0.06) 7 2.200(0.087)
2 8
5.600(0.220)
7.80(0.34)
0.380(0.05) 0 6
2.540(0.00) 2.540(0.00)
Date: 7/24/06 Rev H
SP085 3A Low Dropout Linear Regulator
(c) 2006 Sipex Corporation
PAckAge: 3 Pin to-252
mechanical Dimensions (continued) to-252 Unit: mm(inch)
5.230(0.206) 5.430(0.24)
6.380(0.25) 6.680(0.263) 0.460(0.08) 0.580(0.023)
2.80(0.086) 2.380(0.04) 0.400(0.06) 45
.500(0.374) 0.00(0.38) 0.650(0.026) 0.50(0.037)
0.480(0.0) 0.540(0.02) 0.020(0.00) 0.20(0.005) 5 0.750(0.030) 0.850(0.033)
5
0.600(0.024) .400(0.055) .760(0.06) 2.600(0.02) 3.000(0.8)
7 0.50(0.020)
2.240(0.088) 2.340(0.02)
0.640(0.025) 0.780(0.03) 2.240(0.088) 2.340(0.02)
2.0 3.0
2.0 3.0
Date: 7/24/06 Rev H
SP085 3A Low Dropout Linear Regulator
5.360(0.2) 5.560(0.2)
.080(0.043) .320(0.052)
8
(c) 2006 Sipex Corporation
0
PAckAge: 3 Pin to-220
mechanical Dimensions to-220 Unit: mm(inch)
.660(0.380) 0.660(0.420) 3.560(0.40) 4.060(0.60)
2.580(0.02) 3.380(0.33)
0.550(0.022) .350(0.053)
.850(0.073)
0.200(0.008)
4.230(0.560) 6.50(0.650)
7
.500(0.05)
8.520(0.335) .520(0.375)
27.880(.08) 30.280(.2)
3
3.560(0.40) 4.820(0.0) 2.080(0.082) 2.880(0.3)
7
.60(0.046) .760(0.06) 60 0.83(0.032)
0.38(0.05)
8.763(0.345)
60
0.38(0.05) 2.540(0.00) 2.540(0.00)
0.356(0.04) 0.406(0.06)
Date: 7/24/06 Rev H
SP085 3A Low Dropout Linear Regulator
(c) 2006 Sipex Corporation
oRDeRing infoRmAtion
SP1085 /TR: Tape and Reel Blank: Tube ADJ: Adjustable Output 1.5: Fixed Output 1.5V 1.8: Fixed Output 1.8V 2.5: Fixed Output 2.5V 2.85: Fixed Output 2.85V 3.3: Fixed Output 3.3V 5.0: Fixed Output 5.0V -L: Lead Free
Circuit Type
Package V2: TO-252 V: TO-220 V1: TO-263-3
Part Number
SP1085V2-L/TR SP1085V2-L-1-5/TR SP1085V2-L-1-8/TR SP1085V2-L-2-5/TR SP1085V2-L-2-85/TR SP1085V2-L-3-3/TR SP1085V2-L-5-0/TR SP1085V1-L/TR SP1085V1-L-1-5/TR SP1085V1-L-1-8/TR SP1085V1-L-2-5/TR SP1085V1-L-2-85/TR SP1085V1-L-3-3/TR SP1085V1-L-5-0/TR SP1085V-L SP1085V-L-1-5 SP1085V-L-1-8 SP1085V-L-2-5 SP1085V-L-2-85 SP1085V-L-3-3 SP1085V-L-5-0
Solved by
Voltage Voltage Temperature Pin Package Pack Qty Range Accuracy Range Count
Adj 1.5V 1.8V 2.5V 2.85V 3.3V 5V Adj 1.5V 1.8V 2.5V 2.85V 3.3V 5V Adj 1.5V 1.8V 2.5V 2.85V 3.3V 5V
Sipex corporation Headquarters and Sales Office 233 South Hillview Drive Milpitas, CA 5035 TEL: (408) 34-7500 FAX: (408) 35-7600
2% 2% 2% 2% 2% 2% 2% 2% 2% 2% 2% 2% 2% 2% 2% 2% 2% 2% 2% 2% 2%
0C to +125C 0C to +125C 0C to +125C 0C to +125C 0C to +125C 0C to +125C 0C to +125C 0C to +125C 0C to +125C 0C to +125C 0C to +125C 0C to +125C 0C to +125C 0C to +125C 0C to +125C 0C to +125C 0C to +125C 0C to +125C 0C to +125C 0C to +125C 0C to +125C
TO-252 TO-252 TO-252 TO-252 TO-252 TO-252 TO-252 TO-263 TO-263 TO-263 TO-263 TO-263 TO-263 TO-263 TO-220 TO-220 TO-220 TO-220 TO-220 TO-220 TO-220
3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
2,500/TR 2,500/TR 2,500/TR 2,500/TR 2,500/TR 2,500/TR 2,500/TR 800/TR 800/TR 800/TR 800/TR 800/TR 800/TR 800/TR 50/TUBE 50/TUBE 50/TUBE 50/TUBE 50/TUBE 50/TUBE 50/TUBE
TM
Sipex Corporation reserves the right to make changes to any products described herein. Sipex 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. Date: 7/24/06 Rev H SP085 3A Low Dropout Linear Regulator (c) 2006 Sipex Corporation
2

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