AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR General Description Features • • • • • • • 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. 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) Ordering Information AP1086 X Low Dropout Regulator Note: X X X Package Vout D : TO252-3L K : TO263-3L T : TO220-3L 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 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. Device Lead-free Lead-free Tube/Bulk Package Packaging Part Number Code (Note 2) Quantity Suffix AP1086D AP1086K AP1086T D K T TO252-3L TO263-3L TO220-3L 80 50 50 -U -U -U 13” Tape and Reel Quantity Part Number Suffix 2500/Tape & Reel 800/Tape & Reel NA -13 -13 NA 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 1 Adj + + - 1.25V + CURRENT LIMIT + AP1086 Rev. 2 - Thermal Shutdown 1 of 8 www.diodes.com MARCH 2007 © Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Connection Diagram 3 PIN TO263 FRONT VIEW 2 FRONT VIEW FRONT VIEW 2 Vout Adj (GND) 1 3 PIN TO220 Vin 3 Vin 3 3 PIN TO252 Vout 1 Vin 2 Vout 1 Adj (GND) Adj (GND) Tab is Vout Tab is Vout Tab is Vout 3 Pin Descriptions NAME I/O Adj (GND) O Vout I Vin PIN # FUNCTION 1 Adjustable (Ground only for fixed mode) 2 The output of the regulator. A minimum of 10uF capacitor must be connected from this pin to ground to insure stability. 3 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. Absolute Maximum Ratings Symbol Vin PD TST TOP Parameter DC Supply Voltage Power Dissipation Storage Temperature Operating Junction Temperature Range AP1086 Rev. 2 2 of 8 www.diodes.com Rating Unit -0.3 to 12 V Internally Limited o -65 to +150 C o 0 to +150 C MARCH 2007 © Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Electrical Characteristics PARAMETER CONDITIONS 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 ( Under Operating Conditions ) AP1086-Adj/2.5 /-3.3/-3.6/-5.0 AP1086-Adj/2.5 /-3.3/-3.6/-5.0 AP1086-XXX MIN TYP MAX UNIT 1.225 1.250 1.275 V 1.470 1.500 1.530 V 1.764 1.800 1.836 V 2.450 2.500 2.550 V 3.235 3.300 3.365 V 4.900 5.000 5.100 V - - 0.2 % - - 1 % - 12 15 mV - 15 18 mV - 20 25 mV - 26 33 mV - 40 50 mV - 1.3 1.4 V (VIN-VOUT) = 5V 1. 6 - - A 0oC≦Tj≦125oC - 5 10 mA - 0.008 0.04 %/W - 60 0.003 0.5 101 83 86 15 0.65/2.7 0.65/2.7 70 - dB % % ο TA = 25 C,(VIN-VOUT)= 1.5V,IO = 10mA IOUT = 10mA, TA = 25οC, 3V≦VIN≦ 12V IOUT = 10mA, TA = 25οC, 3.3V≦VIN≦ 12V IOUT = 10mA, TA = 25οC, 4V≦VIN≦ 12V IOUT = 10mA, TA = 25οC, 4.8V≦VIN≦ 12V IOUT = 10mA, TA = 25οC, 6.5V≦VIN≦ 12V IO = 10mA, VOUT+1.5V<VIN<12V VIN = 3.3V, 0mA<Io<1.5A, TA = 25οC (Note 3, 4) VIN = 3V, 0mA<Io<1.5A, TA = 25οC (Note 3, 4) VIN = 3.3V, 0mA<Io<1.5A, TA = 25οC (Note 3, 4) VIN = 4V, 0mA<Io<1.5A, TA = 25οC (Note 3, 4) VIN = 5V, 0≦IOUT≦1.5A, TA = 25οC , TJ = 25oC (Note 3, 4) VIN = 8V, 0≦IOUT≦1.5A, TA = 25οC , TJ = 25oC (Note 3, 4) IOUT = 1.5A, ∆VOUT = 1%VOUT TA = 25οC, 30ms pulse 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 Ripple Rejection Notes: - - O - O C/W C/W 3. 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 © Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Typical Application Adjustable Regulator 5V to 3.3V Fixed Mode Regulator 5V 5V C1 100uF C1 100uF Vin Vout GND Tab is Vout Vin 3.3V/1.5A VOUT=Vref × (1+R2/R1) Vout C2 100uF Adj 2.5V/1.5A R1 121 Ω R2 121 Ω C2 100uF Tab is Vout 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 © Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Typical Performance Characteristics 0.20 2. 0 Output Voltage Deviation (%) 1. 8 1. 6 Dropout Voltage (V) 1. 4 1. 2 0 I load=1.5A -0.20 Tj = 25 oC 1. 0 -0.40 0. 8 Tj = 125 oC 0. 6 -0.80 0. 4 0. 2 0 0 0.25 0.5 0.75 Output Current (A) 1.0 1.25 -1 1.5 -25 Dropout Voltage vs Output Current 0 25 50 Temperature ( oC) 75 100 125 Load Regulation vs Temperature 2 1 0.8 1 0. 5 0 -0.5 -1 -1.5 -2 -50 -25 0 25 50 Temperature ( oC) 75 100 125 150 Output Voltage Deviation (%) Output Voltage Change (%) 1.5 0.6 0.4 0.2 0 2 4 7.5 Cin=1uF Cout=10uF Tantalum 6.5 5.5 40 20 0 -20 -40 0 20 40 60 80 100 120 140 160 180 200 TIME (us) Load Current (A) Output Voltage Deviation (mV) Output Voltage Deviation (mV) Input Voltage (V) Percent Change in Output Voltage vs Temperature 8 10 12 Line Regulation 30 Cin=1uF Cout=10uF Tantalum Preload=100mA 20 10 0 -10 -20 2 1 0 -1 Line Transient Response AP1086 Rev. 2 6 Input Voltage (V) 0 10 20 30 40 50 TIME (us) 60 70 80 90 100 Load Transient Response 5 of 8 www.diodes.com MARCH 2007 © 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 © Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Package Dimension 10.9 2.5 4 BSC. 1.27/ 1.78 Typ 1.52 3 15.7 9.1 8.65/9.65 Typ 9.15 9.65/10.29 Typ 9 .9 7 14.61/15.88 Typ 15.24 2.92 Typ 1.30 (1) TO263-3L 0 .51/0.99 Typ 0 .75 Land P attern R ecom m endation (U nit: m m ) 0.38 Typ 4.06/4.83 Typ 4.45 1.14/1.40 T yp1.27 2.54 1.3 1.14/1.40 Typ 1.27 2.28/2.80 Typ 2 .54 6.354/6.80 Typ 6.58 5.6 7.2 11.0 2.25 2.0 5.40/6.20 Typ 5.57 5.6 5.20/5.50 Typ 5.35 0.88/1.27 (2) TO252-3L 1.2 2.28 BSC. 4.57 BSC. 0.64/1.02 Typ 0.83 0.45/0.58 Typ 0.52 AP1086 Rev. 2 Land Pattern Recommendation (Unit: mm) 0.89/ 1.14 9.00/10.40 Typ 9.70 0.51 7 of 8 www.diodes.com SEE NOTE2 0.61 Typ SEATING PLANE 2.18/2.40 Typ 2.29 0.45/0.58 Typ 0.52 MARCH 2007 © Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Package Dimension ( Continued ) (3) TO220-3L 3.53/4.09 Typ 3.81 3.55/4.85 Typ 4.20 5.84/6.86 Typ 6.35 4.83/5.33 Typ 5.08 12.72/14.72 Typ 13.72 3.66/6.35 Typ 5.00 1.14/1.78 Typ 1.46 0.51/1.40 Typ 0.95 SEATING PLANE 9.70/10.70 Typ 10.20 14.20/16.50 Typ 15.35 2.54/3.43 Typ 2.98 0.31/1.14 0.51/1.14 Typ 0.72 Typ 0.83 2.99/2.79 Typ 2.54 2.03/2.92 Typ 2.48 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 MARCH 2007 © Diodes Incorporated