1.5A Dropout Positive Adjustable Fixed-Mode Regulator General Des
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AP1086
1.5A Dropout Positive Adjustable Fixed-Mode Regulator
General Description
AP1086 dropout positive adjustable fixed-mode regulator with minimum 1.5A output current capability. product specifically designed provide well-regulated supply voltage applications such high-speed termination current 3.3V logic supply. AP1086 also well suited other applications such cards. AP1086 guaranteed have <1.4V dropout full load current making ideal provide well-regulated outputs 1.25V 5.0V with input supply different output voltage.
3-Terminal Adjustable Fixed 1.5V, 1.8V, 2.5V,3.3V, 5.0V. 1.4V Maximum Dropout Full Load Current. Fast Transient Response. Built-in Thermal Shutdown. Output Current Limiting.
Ordering Information
AP1086
Dropout Regulator
Package TO252-3L TO263-3L TO220-3L
Vout Blank 1.5V 1.8V 2.5V 3.3V 5.0V
Lead Free
Packing
Blank Normal Blank Tube Lead Free Package Taping
Typical Application
3.3V Fixed Mode Regulator
100uF 100uF
Adjustable Regulator
AP1086 AP1086
VOUT=Vref*(1+R1/R2). Vout 100uF 2.5V/1.5A
Vout
3.3V/1.5A 100uF
vout
vout
This datasheet contains product information. Anachip Corp. reserves rights modify product specification without notice. liability assumed result this product. rights under patent accompany sale product.
Rev.A5 Feb. 2004
AP1086
1.5A Dropout Positive Adjustable Fixed-Mode Regulator
Block Diagram
Vout
CURRENT LIMIT THERMAL SHUTDOWN (GND) 1.25V
Functional Description
Introduction AP1086 adjustable fixed-mode Dropout(LDO) regulator terminal device which easily programmed internal mask change voltages within range 1.25 AP1086 only needs 1.4V differential between Vout maintain output regulation. addition, output voltage tolerances also extremely tight they include transient response part specification. example, Intel specification calls total 100mV including initial tolerance, load regulation 1.5A load step. AP1086 specifically designed meet fast current transient needs well providing accurate initial voltage, reducing overall system cost with need fewer output capacitors. Load Regulation Since AP1086 only terminal device, possible provide true remote sensing output voltage load. supply good load regulation internal feedback bypass external loss such adjustable mode. Stability AP1086 requires output capacitor part frequency compensation order make regulator stable. most applications minimum 10uF aluminum electrolytic capacitor insures both stability good transient response. Thermal Design AP1086 incorporates internal thermal shutdown that protects device when junction temperature exceeds maximum allowable junction temperature. Although this device operate with junction temperatures range 150oC, recommended that selected heat sink chosen such that during maximum continuous load operation junction temperature kept below temperature. Layout Consideration output capacitors must located close Vout terminal device possible. recommended section layer board plane connect Vout output capacitors prevent high frequency oscillation that result excessive trace inductance.
Anachip Corp. www.anachip.com.tw
Rev.A5 Feb. 2004
AP1086
1.5A Dropout Positive Adjustable Fixed-Mode Regulator
Connection Diagram
TO263 FRONT VIEW TO252 FRONT VIEW Vout Vout (GND) Vout TO220 FRONT VIEW Vout (GND)
Vout (GND)
Vout
Descriptions
NAME (GND) Vout FUNCTION Adjustable (Ground only fixed mode) output regulator. minimum 10uF capacitor must connected from this ground insure stability. input regulator. Typically large storage capacitor connected from this ground insure that input voltage does below minimum dropout voltage during load transient response. This must always 1.4V higher than Vout order device regulate properly.
Absolute Maximum Ratings
Symbol Supply Voltage Power Dissipation Storage Temperature Operating Junction Temperature Range Parameter Rating -0.3 Internally Limited +150 +150 Unit
Anachip Corp. www.anachip.com.tw
Rev.A5 Feb. 2004
AP1086
1.5A Dropout Positive Adjustable Fixed-Mode Regulator
Electrical Characteristics
PARAMETER
Reference Voltage AP1086-Adj AP1086-1.5 Output Voltage AP1086-1.8 AP1086-2.5 AP1086-3.3 AP1086-5.0 Line Regulation AP1086-XXX AP1086-Adj AP1086-1.5 AP1086-1.8 Load Regulation AP1086-2.5 AP1086-3.3 AP1086-5.0 Dropout Voltage (VIN-VOUT) Current Limit Minimum Load Current Thermal Regulation AP1086-Adj/-2.5 /-3.3/-3.6/-5.0 AP1086-Adj/-2.5 /-3.3/-3.6/-5.0 AP1086-XXX
(Under Operating Conditions) CONDITIONS
TJ=25 C,(VIN-VOUT)=1.5V,IO=10mA IOUT 10mA, 3VVIN12V IOUT 10mA, 3.3VVIN IOUT 10mA, 4VVIN12V IOUT 10mA, 4.8VVIN IOUT 10mA, 6.5VVIN IO=10mA, VOUT+1.5V<VIN<12V VIN=3.3V, 0mA<Io<1.5A, TJ=25 (Note VIN=3V, 0mA<Io<1.5A, TJ=25 (Note VIN=3.3V, 0mA<Io<1.5A, TJ=25 (Note VIN=4V, 0mA<Io<1.5A, TJ=25 (Note 0IOUT1.5A, TJ=25 TJ=25 (Note 1.2) 0IOUT1.5A, TJ=25 TJ=25 (Note 1.2) IOUT 1.5A, VOUT=1%VOUT (VIN-VOUT) CTj125
1.225 1.470 1.764 2.450 3.235 4.900
1.250 1.500 1.800 2.500 3.300 5.000
UNIT
1.275 1.530 1.836 2.550 3.365 5.100
0.008
0.04
TA=25, 30ms pulse F=120Hz,COUT=25uF Tantalum, IOUT=1.5A
Ripple Rejection AP1086-XXX Temperature Stability Thermal Resistance Junction-to-Ambient Thermal Resistance Junction-to-Case IO=10mA TO-252 TO-263 TO-252: Control Circuitry/Power Transistor TO-263: Control Circuitry/Power Transistor VIN=VOUT+3V
Note thermal regulation specifications changes output voltage heating effects. Line load regulation measured constant junction temperature duty cycle pulse testing. Load regulation measured output lead 1/18" from package. Note 2:Line load regulation guaranteed maximum power dissipation 15W. Power dissipation determined difference input output output current. Guaranteed maximum power dissipation will available over full input/output range. Note 3:Quiescent current defined minimum output current required maintaining regulation. input/output differential device guaranteed regulate output current greater than 10mA.
Anachip Corp. www.anachip.com.tw
Rev.A5 Feb. 2004
AP1086
1.5A Dropout Positive Adjustable Fixed-Mode Regulator
Typical Performance Characteristics
0.20
Output Voltage Deviation
load=1.5A
Dropout Voltage
0.25
-0.20
-0.40
-0.80
Dropout Voltage Output Current
Output Current
0.75
1.25
Load Regulation Temperature
Temperature
Output Voltage Change
-0.5 -1.5
Output Voltage Deviation
Percent Change Output Voltage Temperature
Output Voltage Deviation (mV) Input Voltage Load Current Output Voltage Deviation (mV) Cin=1uF Cout=10uF Tantalum
Temperature (oC)
Line Regulation
Cin=1uF Cout=10uF Tantalum Preload=100mA
Input Voltage
TIME (us)
Line Transient Response
Load Transient Response
TIME (us)
Anachip Corp. www.anachip.com.tw
Rev.A5 Feb. 2004
AP1086
1.5A Dropout Positive Adjustable Fixed-Mode Regulator
Marking Information
View) Logo
Part Number 1086 86-VV 1.5V 1.8V 2.5V 3.3V
86-VV YYWWX
Blank: normal Lead Free Package
Year week Internal code Optional)
(TO252-3L)
View) Logo
Part Number 1.5V 1.8V 2.5V 3.3V Blank
1086-VV YYWWX
Blank: normal Lead Free Package
Year week Internal code Optional)
(TO220-3L TO263-3L)
Anachip Corp. www.anachip.com.tw
Rev.A5 Feb. 2004
AP1086
1.5A Dropout Positive Adjustable Fixed-Mode Regulator
Package Dimension
TO263-3L
Symbol
Dimensions Millimeters Min. Nom. Max. 4.06 4.45 4.83 0.51 0.75 0.99 1.14 1.27 1.40 0.38 TYP. 1.14 1.27 1.40 8.65 9.15 9.65 9.65 9.97 10.29 2.54 BSC. 14.61 15.24 15.88 2.28 2.54 2.80 1.30 2.92 1.27 1.52 1.78
Dimensions Inches Min. Nom. Max. 0.160 0.175 0.190 0.020 0.030 0.039 0.045 0.050 0.055 0.015 TYP. 0.045 0.050 0.055 0.341 0.380 0.575 0.090 0.050 0.360 0.393 0.100 BSC. 0.600 0.100 0.051 0.060 0.380 0.405 0.625 0.110 0.115 0.070
Anachip Corp. www.anachip.com.tw
Rev.A5 Feb. 2004
AP1086
1.5A Dropout Positive Adjustable Fixed-Mode Regulator
TO252-3L
SEATING PLANE
NOTE2
Notes:
JEDEC Outline: TO-252 Mils suggested positive contact mounting.
Symbol
Dimensions Millimeters Min. Nom. Max. 2.18 2.29 2.39 1.02 1.15 1.27 0.61 TYP. 5.20 5.35 5.50 0.46 0.52 0.58 0.46 0.52 0.58 5.33 5.57 5.80 6.35 6.58 6.80 2.25 BSC. 4.50 BSC. 9.00 9.70 10.40 0.51 0.64 0.83 1.02 1.52 1.78 2.03
Dimensions Inches Min. Nom. Max. 0.086 0.090 0.094 0.040 0.045 0.050 0.024 TYP. 0.205 0.211 0.217 0.018 0.020 0.023 0.018 0.020 0.023 0.210 0.219 0.228 0.250 0.259 0.268 0.089 BSC. 0.177 BSC. 0.354 0.382 0.409 0.020 0.025 0.033 0.040 0.060 0.070 0.080
Anachip Corp. www.anachip.com.tw
Rev.A5 Feb. 2004
AP1086
1.5A Dropout Positive Adjustable Fixed-Mode Regulator
TO220-3L
Symbol
Dimensions Millimeters Min. Nom. Max. 3.55 4.20 4.85 1.14 1.46 1.78 0.51 0.83 1.14 0.31 0.72 1.14 14.20 15.35 16.50 9.70 10.20 10.70 2.29 2.54 2.79 4.83 5.08 5.33 0.51 0.95 1.40 5.84 6.35 6.86 2.03 2.48 2.92 12.72 13.72 14.72 3.66 5.00 6.35 3.53 3.81 4.09 2.54 2.98 3.43
Dimensions Inches Min. Nom. Max. 0.140 0.165 0.191 0.045 0.057 0.070 0.020 0.033 0.045 0.012 0.028 0.045 0.559 0.604 0.650 0.382 0.402 0.421 0.090 0.100 0.110 0.190 0.200 0.210 0.020 0.037 0.055 0.230 0.250 0.270 0.080 0.098 0.115 0.501 0.540 0.580 0.144 0.197 0.250 0.139 0.150 0.161 0.100 0.117 0.135
Anachip Corp. www.anachip.com.tw
SEATING PLANE
Rev.A5 Feb. 2004
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