LD1085V50

LD1085 series 3A Low drop positive voltage regulator adjustable and fixed Features ■ ■ ■ ■ ■ ■ ■ Typical dropout 1.3V (at 3A) Three terminal adjustable or fixed output voltage 1.5V, 1.8V, 2.5V, 3.3V, 5V, 12V. Guaranteed output current up to 3A Output tolerance ±1% at 25°C and ±2% in full temperature range Internal power and thermal limit Wide operating temperature range -40°C to 125°C Package available: TO-220, TO-220FP, DPAK, D2PAK, D2PAK/A Pinout compatibility with standard adjustable VREG DPAK D2PAK D2PAK/A TO-220 TO-220FP ■ better performances in term of drop and output tolerance. A 2.85V output version is suitable for SCSI-2 active termination. Unlike PNP regulators, where a part of the output current is wasted as quiescent current, the LD1085 quiescent current flows into the load, so increase efficiency. Only a 10µF minimum capacitor is need for stability. The device is supplied in TO-220, TO-220FP, DPAK, D2PAK and D2PAK/A. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within ±1% at 25°C. Description The LD1085 is a LOW DROP Voltage Regulator able to provide up to 3A of Output Current. Dropout is guaranteed at a maximum of 1.2V at the maximum output current, decreasing at lower loads. The LD1085 is pin to pin compatible with the older 3-terminal adjustable regulators, but has Schematic diagram June 2007 Rev. 18 1/27 www.st.com 27 LD1085 series Contents 1 2 3 4 5 6 7 8 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Schematic application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 2/27 LD1085 series Pin configuration 1 Figure 1. Pin configuration Pin connections (top view) TO-220 TO-220FP D2PAK D2PAK/A DPAK 3/27 Maximum ratings LD1085 series 2 Table 1. Maximum ratings Absolute maximum ratings Parameter DC Input voltage Output current Power dissipation Storage temperature range Operating junction temperature range Value 30 Internally Limited Internally Limited -55 to +150 -40 to +125 Unit V mA mW °C °C Symbol VI IO PD TSTG TOP Note: Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied Thermal Data Parameter Thermal resistance junction-case Thermal resistance junction-ambient TO-220 3 50 DPAK 8 100 D2PAK D2PAK/A 3 62.5 Unit °C/W °C/W Table 2. Symbol RthJC RthJA 4/27 LD1085 series Schematic application 3 Figure 2. Schematic application Application circuit R2 V O = V REF ⋅ ⎛ 1 + ------⎞ ⎝ R⎠ 1 5/27 Electrical characteristics LD1085 series 4 Table 3. Symbol VO ΔVO ΔVO Vd Iq Isc Electrical characteristics Electrical characteristics of LD1085#15 (VI=4.5V, CI = CO =10μF, TA = -40 to 125°C, unless otherwise specified). Parameter Output voltage (1) Test IO = 0 mA, TJ = 25°C IO = 0 to 3A, VI = 3.1 to 30V Line Regulation IO = 0 mA, VI = 3.1 to 18V, TJ = 25°C IO = 0 mA, VI = 3.1 to 15V Load Regulation Dropout Voltage Quiescent Current Short Circuit Current Thermal Regulation SVR eN S S Supply Voltage Rejection RMS Output Noise Voltage (% of VO) Temperature Stability Long Term Stability TA = 125°C, 1000Hrs IO = 0 to 3A, TJ = 25°C IO = 0 to 3A IO = 3 A VI ≤30V VI - VO = 5V VI - VO = 25V TA = 25°C, 30ms pulse f = 120 Hz, CO = 25µF, IO = 3A VI = 7.5 ± 3V TA = 25°C, f =10Hz to 10KHz 60 3.2 0.2 Min. 1.485 1.47 Typ. 1.5 1.5 0.2 0.4 2 4 1.3 5 4.5 0.5 0.008 72 0.003 0.5 0.5 0.04 Max. 1.515 1.53 4 4 10 20 1.5 10 Unit V V mV mV mV mV V mA A A %/W dB % % % 1. See short-circuit current curve for available output current at fixed dropout. 6/27 LD1085 series Table 4. Symbol VO ΔVO ΔVO Vd Iq Isc Electrical characteristics Electrical characteristics of LD1085#18 (VI=4.8V, CI = CO =10μF, TA = -40 to 125°C, unless otherwise specified). Parameter Output voltage (1) Test IO = 0 mA, TJ = 25°C IO = 0 to 3A, VI = 3.4 to 30V Line Regulation IO = 0 mA, VI = 3.4 to 18V TJ = 25°C IO = 0 mA, VI = 3.4 to 15V Load Regulation Dropout Voltage Quiescent Current Short Circuit Current Thermal Regulation IO = 0 to 3A, TJ = 25°C IO = 0 to 3A IO = 3 A VI ≤30V VI - VO = 5V VI - VO = 25V TA = 25°C, 30ms pulse f = 120 Hz, CO = 25µF, IO = 3A VI = 7.5 ± 3V TA = 25°C, f =10Hz to 10KHz 60 3.2 0.2 Min. 1.782 1.764 Typ. 1.8 1.8 0.2 0.4 2 4 1.3 5 4.5 0.5 0.008 72 0.003 0.5 TA = 125°C, 1000Hrs 0.5 0.04 Max. 1.818 1.836 4 4 10 20 1.5 10 Unit V V mV mV mV mV V mA A A %/W dB % % % SVR eN S S Supply Voltage Rejection RMS Output Noise Voltage (% of VO) Temperature Stability Long Term Stability 1. See short-circuit current curve for available output current at fixed dropout. 7/27 Electrical characteristics LD1085 series Table 5. Symbol VO ΔVO ΔVO Vd Iq Isc Electrical characteristics of LD1085#25 (VI=5.5V, CI = CO =10μF, TA = -40 to 125°C, unless otherwise specified). Parameter Output voltage (1) Test IO = 0 mA, TJ = 25°C IO = 0 to 3A, VI = 4.1 to 30V Line regulation IO = 0 mA, VI = 4.1 to 18V, TJ = 25°C IO = 0 mA, VI = 4.1 to 18V Load regulation Dropout voltage Quiescent current Short circuit current Thermal regulation IO = 0 to 3A, TJ = 25°C IO = 0 to 3A IO = 3 A VI ≤30V VI - VO = 5V VI - VO = 25V TA = 25°C, 30ms pulse f = 120 Hz, CO = 25µF, IO = 3A VI = 7.5 ± 3V 60 3.2 0.2 Min. 2.475 2.45 Typ. 2.5 2.5 0.2 0.4 2 4 1.3 5 4.5 0.5 0.008 72 0.003 0.5 TA = 125°C, 1000Hrs 0.5 0.04 Max. 2.525 2.55 4 4 10 20 1.5 10 Unit V V mV mV mV mV V mA A A %/W dB % % % SVR eN S S Supply voltage rejection RMS Output noise voltage (% of TA = 25°C, f =10Hz to 10KHz VO) Temperature stability Long term stability 1. See short-circuit current curve for available output current at fixed dropout. 8/27 LD1085 series Electrical characteristics Table 6. Symbol VO ΔVO ΔVO Vd Iq Isc Electrical characteristics of LD1085#33 (VI=6.3V, CI = CO =10μF, TA = -40 to 125°C, unless otherwise specified). Parameter Output voltage (1) Test IO = 0 mA, TJ = 25°C IO = 0 to 3A, VI = 4.9 to 30V Line regulation IO = 0 mA, VI = 4.9 to 18V, TJ = 25°C IO = 0 mA, VI = 4.9 to 18V Load regulation Dropout voltage Quiescent current Short circuit current Thermal regulation IO = 0 to 3A, TJ = 25°C IO = 0 to 3A IO = 3 A VI ≤30V VI - VO = 5V VI - VO = 25V TA = 25°C, 30ms pulse f = 120 Hz, CO = 25µF, IO = 3A VI = 8.3 ± 3V 60 3.2 0.2 Min. 3.267 3.234 Typ. 3.3 3.35 0.5 1 3 7 1.3 5 4.5 0.5 0.008 72 0.003 0.5 TA = 125°C, 1000Hrs 0.5 0.04 Max. 3.333 3.366 6 6 15 20 1.5 10 Unit V V mV mV mV mV V mA A A %/W dB % % % SVR eN S S Supply voltage rejection RMS Output noise voltage (% of TA = 25°C, f =10Hz to 10KHz VO) Temperature stability Long term stability 1. See short-circuit current curve for available output current at fixed dropout. 9/27 Electrical characteristics LD1085 series Table 7. Symbol VO ΔVO ΔVO Vd Iq Isc Electrical characteristics of LD1085#50 (VI=8V, CI = CO =10μF, TA = -40 to 125°C, unless otherwise specified). Parameter Output voltage (1) Test IO = 0 mA, TJ = 25°C IO = 0 to 3A, VI = 6.6 to 30V Line regulation IO = 0 mA, VI = 6.6 to 20V, TJ = 25°C IO = 0 mA, VI = 6.6 to 20V Load regulation Dropout voltage Quiescent current Short circuit current Thermal regulation IO = 0 to 3A, TJ = 25°C IO = 0 to 3A IO = 3 A VI ≤30V VI - VO = 5V VI - VO = 25V TA = 25°C, 30ms pulse f = 120 Hz, CO = 25µF, IO = 3A VI = 10 ± 3V 60 3.2 0.2 Min. 4.95 4.9 Typ. 5 5 0.5 1 5 10 1.3 5 4.5 0.5 0.008 72 0.003 0.5 TA = 125°C, 1000Hrs 0.5 0.04 Max. 5.05 5.1 10 10 10 35 1.5 10 Unit V V mV mV mV mV V mA A A %/W dB % % % SVR eN S S Supply voltage rejection RMS Output noise voltage (% of TA = 25°C, f =10Hz to 10KHz VO) Temperature stability Long term stability 1. See short-circuit current curve for available output current at fixed dropout. 10/27 LD1085 series Electrical characteristics Table 8. Symbol VO Electrical characteristics of LD1085#12 (VI=15V, CI = CO =10μF, TA = -40 to 125°C, unless otherwise specified). Parameter Output voltage (1) Test IO = 0 mA, TJ = 25°C IO = 0 to 3A, VI = 13.8 to 30V Line regulation IO = 0 mA, VI = 13.8 to 25V, TJ = 25°C IO = 0 mA, VI = 13.8 to 25V Min. 11.88 11.76 Typ. 12 12 1 2 12 24 1.3 5 3.2 0.2 4.5 0.5 0.008 54 66 0.003 0.5 TA = 125°C, 1000Hrs 0.5 0.04 Max. 12.12 12.24 25 25 36 72 1.5 10 Unit V V mV mV mV mV V mA A A %/W dB % % % ΔVO ΔVO Vd Iq Isc Load regulation Dropout voltage Quiescent current Short circuit current Thermal regulation IO = 0 to 3A, TJ = 25°C IO = 0 to 3A IO = 3 A VI ≤30V VI - VO = 5V VI - VO = 25V TA = 25°C, 30ms pulse f = 120 Hz, CO = 25µF, IO = 3A VI = 17 ± 3V SVR eN S S Supply voltage rejection RMS Output noise voltage (% of TA = 25°C, f =10Hz to 10KHz VO) Temperature stability Long term stability 1. See short-circuit current curve for available output current at fixed dropout. 11/27 Electrical characteristics LD1085 series Table 9. Symbol VO Electrical characteristics of LD1085# (VI=4.25V, CI = CO =10μF, TA = -40 to 125°C, unless otherwise specified). Parameter Output voltage (1) Test IO = 10mA TJ = 25°C IO = 10mA to 3A, VI = 2.85 to 30V Line Regulation IO = 10mA, VI = 2.85 to 16.5V, TJ = 25°C IO = 10mA, VI = 2.85 to 16.5V Min. 1.237 1.225 Typ. 1.25 1.25 0.015 0.035 0.1 0.2 1.3 3 5.5 0.5 6.5 0.7 0.003 0.015 60 72 55 0.2 0.003 0.5 TA = 125°C, 1000Hrs 0.5 120 5 Max. 1.263 1.275 0.2 0.2 0.3 0.4 1.5 10 Unit V V % % % % V mA A A %/W dB μA μA % % % ΔVO ΔVO Vd IO(min) Isc Load Regulation Dropout Voltage Minimum Load Current Short Circuit Current Thermal Regulation IO = 10mA to 3A, TJ = 25°C IO = 0 to 3A IO = 3 A VI = 30V VI - VO = 5V VI - VO = 25V TA = 25°C, 30ms pulse f = 120 Hz, CO = 25µF,CADJ = 25 µF, IO = 3A, VI = 6.25 ± 3V VI = 4.25V, IO = 10 mA (1) SVR IADJ ΔIADJ eN S S Supply Voltage Rejection Adjust Pin Current Adjust Pin Current Change IO = 10mA to 3A, VI = 2.85 to 16.5V TA = 25°C, f =10Hz to 10KHz RMS Output Noise Voltage (% of VO) Temperature Stability Long Term Stability 1. See short-circuit current curve for available output current at fixed dropout. 12/27 LD1085 series Typical application 5 Figure 3. Typical application (Unless otherwise specified TJ = 25°C, CI = CO = 10µF) Output voltage vs temperature Figure 4. Output voltage vs temperature Figure 5. Output voltage vs temperature Figure 6. Short circuit current vs dropout voltage Figure 7. Line regulation vs temperature Figure 8. Load regulation vs temperature 13/27 Typical application LD1085 series Figure 9. Dropout voltage vs temperature Figure 10. Dropout voltage vs output current Figure 11. Adjust pin current vs temperature Figure 12. Quiescent current vs temperature Figure 13. Line regulation vs temperature Figure 14. Supply voltage rejection vs output current 14/27 LD1085 series Typical application Figure 15. Supply voltage rejection vs frequency Figure 16. Supply voltage rejection vs temperature Figure 17. Minimum load current vs temperature Figure 18. Stability Figure 19. Stability Figure 20. Line transient VI=12 to 13V, IO=200mA, CI = 1µF(tant), CO=10µF(tant), CADJ=1µF 15/27 Typical application Figure 21. Line transient Figure 22. Load transient LD1085 series VI=12 to 13V, IO=200mA, CI = 1µF(tant), CO=10µF(tant), CADJ=1µF VI=12V, IO=0.12 to 3A, CI = 1µF(tant), CO=10µF(tant), CADJ=1µF Figure 23. Load transient VI=12V, IO=0.12 to 3A, CI = 1µF(tant), CO=10µF(tant), CADJ=1µF 16/27 LD1085 series Package mechanical data 6 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. 17/27 Package mechanical data LD1085 series TO-220 MECHANICAL DATA DIM. A C D D1 E F F1 F2 G G1 H2 L2 L4 L5 L6 L7 L9 DIA. 13.0 2.65 15.25 6.2 3.5 3.75 0.49 0.61 1.14 1.14 4.95 2.4 10.0 16.4 14.0 2.95 15.75 6.6 3.93 3.85 0.511 0.104 0.600 0.244 0.137 0.147 mm. MIN. 4.40 1.23 2.40 1.27 0.70 0.88 1.70 1.70 5.15 2.7 10.40 0.019 0.024 0.044 0.044 0.194 0.094 0.393 0.645 0.551 0.116 0.620 0.260 0.154 0.151 TYP MAX. 4.60 1.32 2.72 MIN. 0.173 0.048 0.094 0.050 0.027 0.034 0.067 0.067 0.203 0.106 0.409 inch TYP. MAX. 0.181 0.051 0.107 P011C 18/27 LD1085 series Package mechanical data TO-220FP MECHANICAL DATA mm. DIM. A B D E F F1 F2 G G1 H L2 L3 L4 L5 L6 L7 DIA. 28.6 9.8 2.9 15.9 9 3 MIN. 4.40 2.5 2.5 0.45 0.75 1.15 1.15 4.95 2.4 10.0 16 30.6 10.6 3.6 16.4 9.3 3.2 1.126 0.385 0.114 0.626 0.354 0.118 TYP MAX. 4.60 2.7 2.75 0.70 1 1.50 1.50 5.2 2.7 10.40 MIN. 0.173 0.098 0.098 0.017 0.030 0.045 0.045 0.194 0.094 0.393 0.630 1.204 0.417 0.142 0.645 0.366 0.126 inch TYP. MAX. 0.181 0.106 0.108 0.027 0.039 0.059 0.059 0.204 0.106 0.409 7012510A-H 19/27 Package mechanical data LD1085 series DPAK MECHANICAL DATA mm. DIM. MIN. A A1 A2 B b4 C C2 D D1 E E1 e e1 H L (L1) L2 L4 R V2 2.2 0.9 0.03 0.64 5.2 0.45 0.48 6 5.1 6.4 4.7 2.28 4.4 9.35 1 2.8 0.8 0.6 0.2 0° 8° 0° 1 0.023 0.008 8° 4.6 10.1 0.173 0.368 0.039 0.110 0.031 0.039 6.6 0.252 0.185 0.090 0.181 0.397 TYP MAX. 2.4 1.1 0.23 0.9 5.4 0.6 0.6 6.2 MIN. 0.086 0.035 0.001 0.025 0.204 0.017 0.019 0.236 0.200 0.260 TYP. MAX. 0.094 0.043 0.009 0.035 0.212 0.023 0.023 0.244 inch 0068772-F 20/27 LD1085 series Package mechanical data D2PAK MECHANICAL DATA mm. DIM. MIN. A A1 A2 B B2 C C2 D D1 E E1 G L L2 L3 M R V2 0˚ 4.88 15 1.27 1.4 2.4 0.4 8˚ 0˚ 10 8.5 5.28 15.85 1.4 1.75 3.2 0.192 0.590 0.050 0.055 0.094 0.016 8˚ 4.4 2.49 0.03 0.7 1.14 0.45 1.23 8.95 8 10.4 0.393 0.335 0.208 0.624 0.055 0.068 0.126 TYP MAX. 4.6 2.69 0.23 0.93 1.7 0.6 1.36 9.35 MIN. 0.173 0.098 0.001 0.027 0.044 0.017 0.048 0.352 0.315 0.409 TYP. MAX. 0.181 0.106 0.009 0.036 0.067 0.023 0.053 0.368 inch P011P6G 21/27 Package mechanical data LD1085 series D2PAK/A MECHANICAL DATA mm. DIM. MIN. A A1 A2 B B1 B2 C C2 D D1 E E1 G L L2 M R V2 0° 4.88 15 1.27 2.4 0.4 8° 0° 10 8.5 5.28 15.85 1.4 3.2 0.192 0.591 0.050 0.094 0.016 8° 4.40 2.49 0.03 0.7 0.8 1.14 0.45 1.23 8.95 8 10.4 0.394 0.335 0.208 0.624 0.055 0.126 TYP MAX. 4.60 2.69 0.23 0.93 1.3 1.7 0.60 1.36 9.35 MIN. 0.173 0.098 0.001 0.028 0.031 0.045 0.018 0.048 0.352 0.315 0.409 TYP. MAX. 0.181 0.106 0.009 0.037 0.051 0.067 0.024 0.054 0.368 inch 7106164/D 22/27 LD1085 series Package mechanical data Tape & Reel DPAK-PPAK MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.80 10.40 2.55 3.9 7.9 6.90 10.50 2.65 4.0 8.0 12.8 20.2 60 22.4 7.00 10.60 2.75 4.1 8.1 0.268 0.409 0.100 0.153 0.311 0.272 0.413 0.104 0.157 0.315 13.0 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.2.76 0.417 0.105 0.161 0.319 0.512 MIN. TYP. MAX. 12.992 0.519 inch 23/27 Package mechanical data LD1085 series Tape & Reel D2PAK-P 2PAK-D 2PAK/A-P 2PAK/A MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 10.50 15.70 4.80 3.9 11.9 10.6 15.80 4.90 4.0 12.0 12.8 20.2 60 14.4 10.70 15.90 5.00 4.1 12.1 0.413 0.618 0.189 0.153 0.468 0.417 0.622 0.193 0.157 0.472 13.0 TYP MAX. 180 13.2 0.504 0.795 2.362 0.567 0.421 0.626 0.197 0.161 0.476 0.512 MIN. TYP. MAX. 7.086 0.519 inch 24/27 LD1085 series Order codes 7 Table 10. Order codes Order codes Part numbers Packages TO-220 TO-220FP D2 PAK DPAK (T&R) LD1085DT15R LD1085V18 LD1085V25 LD1085V33 LD1085V50 LD1085V12 LD1085V LD1085P LD1085D2T LD1085DT-R LD1085CDT-R LD1085D2T33 LD1085DT18R LD1085DT25R LD1085DT33R LD1085D2M50 LD1085D2M12 LD1085D2M12R LD1085D2M LD1085D2M-R LD1085D2M18R LD1085D2M25R LD1085D2M33R D PAK/A 2 D PAK/A (T&R) 2 Output voltage 1.5 V 1.8 V 2.5 V 3.3 V 5.0 V 12.0 V ADJ ADJ 25/27 Revision history LD1085 series 8 Table 11. Date Revision history Revision history Revision 12 13 14 15 16 17 18 Mistake Order Codes - Table 1. Mistake U.M. Load Regulation - V ==> mV. Version 1.2V removed. Order Codes has been updated and new template. Add package DPAK, typo on VO test value in tables 3, 4 and 11. Order codes has been updated. Order codes has been updated. Changes 07-Oct-2004 08-Feb-2005 01-Mar-2005 22-May-2006 10-Nov-2006 04-Apr-2007 07-Jun-2007 26/27 LD1085 series Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. 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