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| AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Features * * * * * * * 3-Terminal Adjustable or Fixed 1.5V, 1.8V, 2.5V,3.3V, 5.0V 1.4V Maximum Dropout at Full Load Current Fast Transient Response Built-in Thermal Shutdown Output Current Limiting Packages: TO252-3L, TO263-3L, and TO220-3L Lead Free Finish/RoHS Compliant for Lead Free products (Note 1) General Description AP1086 is a low dropout positive adjustable or fixed-mode regulator with 1.5A output current capability. The product is specifically designed to provide well-regulated supply for low voltage IC applications such as high-speed bus termination and low current 3.3V logic supply. AP1086 is also well suited for other applications such as VGA cards. AP1086 is guaranteed to have lower than 1.4V dropout at full load current making it ideal to provide well-regulated outputs of 1.25V to 5.0V with 4.7 to 12V input supply by different output voltage. Ordering Information AP1086 X X X X Low Dropout Regulator Package D : TO252-3L K : TO263-3L T : TO220-3L Vout Blank : Adj 15 = 1.5V 18 = 1.8V 25 = 2.5V 33 = 3.3V 50 = 5.0V Lead Free Packing L : Lead Free Package -U : Tube -13 : Taping Note: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. Device AP1086D AP1086K AP1086T Tube/Bulk Package Packaging Part Number Code (Note 2) Quantity Suffix D K T TO252-3L TO263-3L TO220-3L 80 50 50 -U -U -U 13" Tape and Reel Quantity 2500/Tape & Reel 800/Tape & Reel NA Part Number Suffix -13 -13 NA Lead-free Lead-free Lead-free Note: 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. Block Diagram Vin 3 2 Vout + + CURRENT LIMIT + Thermal Shutdown 1 Adj 1.25V + AP1086 Rev. 2 1 of 8 www.diodes.com MARCH 2007 (c) Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Connection Diagram 3 PIN TO263 FRONT VIEW 3 PIN TO252 FRONT VIEW 3 2 1 Tab is Vout Vin Vout Adj (GND) Tab is Vout 3 PIN TO220 FRONT VIEW 3 2 1 Vin Vout Adj (GND) 3 2 1 Vin Vout Adj (GND) Tab is Vout Pin Descriptions NAME Adj (GND) Vout O I/O PIN # 1 2 FUNCTION Adjustable (Ground only for fixed mode) The output of the regulator. A minimum of 10uF capacitor must be connected from this pin to ground to insure stability. The input pin of regulator. Typically a large storage capacitor is connected from this pin to ground to insure that the input voltage does not sag below the minimum dropout voltage during the load transient response. This pin must always be 1.4V higher than Vout in order for the device to regulate properly. Vin I 3 Absolute Maximum Ratings Symbol Vin PD TST TOP Parameter DC Supply Voltage Power Dissipation Storage Temperature Operating Junction Temperature Range Rating Unit -0.3 to 12 V Internally Limited o -65 to +150 C o 0 to +150 C AP1086 Rev. 2 2 of 8 www.diodes.com MARCH 2007 (c) Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Electrical Characteristics PARAMETER Reference Voltage AP1086-Adj AP1086-1.5 AP1086-1.8 Output Voltage 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 Ripple Rejection 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 MIN 1.225 1.470 1.764 2.450 3.235 4.900 1. 6 TYP 1.250 1.500 1.800 2.500 3.300 5.000 12 15 20 26 40 1.3 5 0.008 60 0.003 0.5 101 83 86 15 0.65/2.7 0.65/2.7 MAX 1.275 1.530 1.836 2.550 3.365 5.100 0.2 1 15 18 25 33 50 1.4 10 0.04 70 O UNIT V V V V V V % % mV mV mV mV mV V A mA %/W dB % % C/W C/W TA = 25 C,(VIN-VOUT)= 1.5V,IO = 10mA IOUT = 10mA, TA = 25C, 3VVIN 12V IOUT = 10mA, TA = 25C, 3.3VVIN 12V IOUT = 10mA, TA = 25C, 4VVIN 12V IOUT = 10mA, TA = 25C, 4.8VVIN 12V IOUT = 10mA, TA = 25C, 6.5VVIN 12V IO = 10mA, VOUT+1.5V f = 120Hz,COUT = 25uF Tantalum, IOUT = 1.5A AP1086-XXX VIN = VOUT+3V RMS Noise (% of VOUT) 10Hz f 10KHz Temperature Stability IO = 10mA Thermal Resistance TO252-3L Junction-to-Ambient TO263-3L (No heat sink ;No air flow) TO220-3L TO252-3L: Control Circuitry/Power Transistor Thermal Resistance TO263-3L: Control Circuitry/Power Transistor Junction-to-Case TO220-3L: Control Circuitry/Power Transistor Notes: 3. O See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead = 1/18" from the package. 4. Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the difference in input and output and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range. 5. Quiescent current is defined as the minimum output current required in maintaining regulation. At 12V input/output differential the device is guaranteed to regulate if the output current is greater than 10mA. AP1086 Rev. 2 3 of 8 www.diodes.com MARCH 2007 (c) Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Typical Application 5V to 3.3V Fixed Mode Regulator 5V C1 100uF Vin Vout GND Tab is Vout 3.3V/1.5A C2 100uF 5V Adjustable Regulator C1 100uF Vin Vout Adj Tab is Vout VOUT=Vref x (1+R2/R1) 2.5V/1.5A R1 121 R2 121 C2 100uF Note: Vo = VREF (1+ R2 ) R1 Functional Description Introduction The AP1086 adjustable or fixed-mode Low Dropout (LDO) regulator is a 3 terminal device which can easily be programmed by internal mask change to any voltages within the range of 1.25V to Vin-1.4V. The AP1086 only needs 1.4V differential between Vin and Vout to maintain output regulation. In addition, the output voltage tolerances are also extremely tight and they include the transient response as part of the specification. For example, Intel VRE specification calls for a total of +/- 100mV including initial tolerance, load regulation and 0 to 1.5A load step. The AP1086 is specifically designed to meet the fast current transient needs as well as providing an accurate initial voltage, reducing the overall system cost with the need for fewer output capacitors. Load Regulation Since the AP1086 is only a 3 terminal device, it is not possible to provide true remote sensing of the output voltage at the load. But it can supply good load regulation by internal feedback bypass the external loss such as adjustable mode. Stability The AP1086 requires the use of an output capacitor as part of the frequency compensation in order to make the regulator stable. For most applications a minimum of 10uF aluminum electrolytic capacitor insures both stability and good transient response. Thermal Design The AP1086 incorporates an internal thermal shutdown that protects the device when the junction temperature exceeds the maximum o allowable junction temperature. Although this device can operate with junction temperatures in the range of 150 C, it is recommended that the selected heat sink be chosen such that during maximum continuous load operation the junction temperature is kept below the temperature. Layout Consideration The output capacitors must be located as close to the Vout terminal of the device as possible. It is recommended to use a section of a layer of the PC board as a plane to connect the Vout pin to the output capacitors to prevent any high frequency oscillation that may result due to excessive trace inductance. AP1086 Rev. 2 4 of 8 www.diodes.com MARCH 2007 (c) Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Typical Performance Characteristics 2. 0 1. 8 0.20 Output Voltage Deviation (%) 1. 6 0 I load=1.5A Dropout Voltage (V) 1. 4 1. 2 1. 0 0. 8 0. 6 0. 4 0. 2 0 0 0.25 Tj = 125 oC Tj = 25 oC -0.20 -0.40 -0.80 Dropout Voltage vs Output Current 2 1.5 1 Output Current (A) 0.5 0.75 1.0 1.25 1.5 -1 -25 0 Temperature ( oC) 25 50 75 100 125 Load Regulation vs Temperature Output Voltage Change (%) 1 0. 5 0 -0.5 -1 -1.5 -2 -50 -25 0 25 50 75 100 125 150 0.8 Output Voltage Deviation (%) 0.6 0.4 0.2 0 Percent Change in Output Voltage vs Temperature Output Voltage Deviation (mV) Input Voltage (V) Load Current (A) Output Voltage Deviation (mV) 7.5 6.5 5.5 40 20 0 -20 -40 Cin=1uF Cout=10uF Tantalum 30 20 10 0 -10 -20 2 1 0 -1 0 10 20 Temperature ( oC) 2 4 Line Regulation Cin=1uF Cout=10uF Tantalum Preload=100mA Input Voltage (V) 6 8 10 12 0 20 40 60 TIME (us) 80 100 120 140 160 180 200 30 TIME (us) 40 50 60 70 80 90 100 Line Transient Response Load Transient Response AP1086 Rev. 2 5 of 8 www.diodes.com MARCH 2007 (c) Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Marking Information (Top View ) Logo Part Number 1086 for ADJ 86- W : 15 for 1.5V 18 for 1.8V 25 for 2.5V 33 for 3.3V 50 for 5V 86-VV YYWWX X L: Lead Free Package X : Internal code(Optional) WW: Xth week: 01~52 YY : Year: "01"=2001 "02"=2002 (TO252-3L) ~ (Top View ) Logo Part Number VV : 15 for 1.5V 18 for 1.8V 25 for 2.5V 33 for 3.3V 50 for 5V Blank for ADJ 1086-VV YYWWX X L: Lead Free Package X : Internal code(Optional) WW: Xth week 01~52 : YY : Year: "01"=2001 "02"=2002 (TO220-3L / TO263-3L) AP1086 Rev. 2 6 of 8 www.diodes.com ~ MARCH 2007 (c) Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Package Dimension (1) TO263-3L 2.92 Typ 1.30 10.9 9.65/10.29 Typ 9 .9 7 14.61/15.88 Typ 15.24 8.65/9.65 Typ 9.15 9.1 1.27/ 1.78 Typ 1.52 2.5 4 BSC. 1.3 2.54 0 .51/0.99 Typ 0 .75 1.14/1.40 T yp1.27 Land P attern R ecom m endation (U nit: m m ) 0.38 Typ 4.06/4.83 Typ 4.45 (2) TO252-3L 0.88/1.27 5.6 6.354/6.80 Typ 6.58 5.20/5.50 Typ 5.35 5.40/6.20 Typ 5.57 11.0 5.6 2.25 2.0 7.2 1.2 9.00/10.40 Typ 9.70 2.18/2.40 Typ 2.29 SEE NOTE2 SEATING PLANE 0.45/0.58 Typ 0.52 0.61 Typ 2.28 BSC. 4.57 BSC. 0.64/1.02 Typ 0.83 Land Pattern Recommendation (Unit: mm) 0.89/ 1.14 0.45/0.58 Typ 0.52 0.51 AP1086 Rev. 2 7 of 8 www.diodes.com 1.14/1.40 Typ 1.27 2.28/2.80 Typ 2 .54 3 15.7 MARCH 2007 (c) Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Package Dimension ( Continued ) (3) TO220-3L 2.54/3.43 Typ 2.98 9.70/10.70 Typ 10.20 3.53/4.09 Typ 3.81 5.84/6.86 Typ 6.35 3.55/4.85 Typ 4.20 0.51/1.40 Typ 0.95 SEATING PLANE 2.03/2.92 Typ 2.48 14.20/16.50 Typ 15.35 3.66/6.35 Typ 5.00 1.14/1.78 Typ 1.46 4.83/5.33 Typ 5.08 0.31/1.14 0.51/1.14 Typ 0.72 Typ 0.83 2.99/2.79 Typ 2.54 IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated. AP1086 Rev. 2 8 of 8 www.diodes.com 12.72/14.72 Typ 13.72 MARCH 2007 (c) Diodes Incorporated |
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