1.5A Low drop positive voltage regulator adjustable and fixed

www.DataSheet4U.com LD1086xx 1.5A Low drop positive voltage regulator adjustable and fixed Features ■ ■ Typical dropout 1.3V at 1.5A Three terminal adjustable or fixed output voltage 1.5V, 1.8V, 2.5V, 3.3V, 3.6V, 5V, 8V, 9V, 12V. Guaranteed output current up to 1.5A 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, D PAK, D PAK/A, DPAK Pinout compatibility with standard adjustable VREG 2 2 ■ ■ ■ ■ DPAK TO-220 ■ ■ D2PAK D2PAK/A Description The LD1086 is a LOW DROP voltage regulator able to provide up to 1.5A of output current. Dropout is guaranteed at a maximum of 1.2V at the maximum output current, decreasing at lower loads. The LD1086 is pin to pin compatible with the older 3-terminal adjustable regulators, but has 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 LD1086 quiescent current flows into Table 1. Device summary the load, so increase efficiency. Only a 10µF minimum capacitor is need for stability. The device is supplied in TO-220, D2PAK, D2PAK/A and DPAK. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within ±1% at 25°C. Part number LD1086XX LD1086XX12 LD1086XX15 LD1086XX18 LD1086XX25 July 2007 Rev. 18 LD1086XX33 LD1086XX36 LD1086XX50 LD1086XX80 LD1086XX90 1/37 www.st.com 37 www.DataSheet4U.com LD1086xx Contents 1 2 3 4 5 6 7 8 9 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Schematic application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 2/37 www.DataSheet4U.com LD1086xx Diagram 1 Figure 1. Diagram Schematic diagram 3/37 www.DataSheet4U.com Pin configuration LD1086xx 2 Figure 2. Pin configuration Pin connections (top view) TO-220 D2PAK DPAK D2PAK/A Note: The TAB is physically connected to the Output (this is valid for the TO-220 package too). 4/37 www.DataSheet4U.com LD1086xx Maximum ratings 3 Table 2. 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 D2PAK D2PAK/A 3 62.5 DPAK 8 Unit °C/W °C/W Table 3. Symbol RthJC RthJA 5/37 www.DataSheet4U.com Schematic application LD1086xx 4 Figure 3. Schematic application Application circuit R2 V O = V REF ⋅ ⎛ 1 + ------⎞ ⎝ R⎠ 1 6/37 www.DataSheet4U.com LD1086xx Electrical characteristics 5 Table 4. Symbol VO ΔVO ΔVO Vd Iq Isc Electrical characteristics Electrical characteristics of LD1086#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 1.5A, VI = 3.4 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 IO = 0 to 1.5A, TJ = 25°C IO = 0 to 1.5A IO = 1.5A VI ≤30V VI - VO = 5V VI - VO = 25V TA = 25°C, 30ms pulse f = 120 Hz, CO = 25 μF, IO = 1.5A VI = 6.5 ± 3V 60 1.5 0.05 Min. 1.485 1.47 Typ. 1.5 1.5 0.2 0.4 0.5 1 1.3 5 2 0.02 0.01 82 0.003 0.5 TA = 125°C, 1000Hrs 0.5 0.04 Max. 1.515 1.53 4 4 8 16 1.5 10 Unit V V mV mV mV mV V mA A A %/W dB % % % 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. 7/37 www.DataSheet4U.com Electrical characteristics Table 5. Symbol VO ΔVO ΔVO Vd Iq Isc LD1086xx Electrical characteristics of LD1086#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 1.5A, 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 1.5A, TJ = 25°C IO = 0 to 1.5A IO = 1.5A VI ≤30V VI - VO = 5V VI - VO = 25V TA = 25°C, 30ms pulse f = 120 Hz, CO = 25 μF, IO = 1.5A VI = 6.8 ± 3V 60 1.5 0.05 Min. 1.782 1.764 Typ. 1.8 1.8 0.2 0.4 0.5 1 1.3 5 2 0.02 0.01 82 0.003 0.5 TA = 125°C, 1000Hrs 0.5 0.04 Max. 1.818 1.836 4 4 8 16 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. 8/37 www.DataSheet4U.com LD1086xx Electrical characteristics Table 6. Symbol VO ΔVO ΔVO Vd Iq Isc Electrical characteristics of LD1086#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 1.5A, 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 1.5A, TJ = 25°C IO = 0 to 1.5A IO = 1.5A VI ≤30V VI - VO = 5V VI - VO = 25V TA = 25°C, 30ms pulse f = 120 Hz, CO = 25 μF, IO = 1.5A VI = 7.5 ± 3V 60 1.5 0.05 Min. 2.475 2.45 Typ. 2.5 2.5 0.2 0.4 0.5 1 1.3 5 2 0.2 0.008 81 0.003 0.5 TA = 125°C, 1000Hrs 0.5 0.04 Max. 2.525 2.55 4 4 8 16 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. 9/37 www.DataSheet4U.com Electrical characteristics LD1086xx Table 7. Symbol VO ΔVO ΔVO Vd Iq Isc Electrical characteristics of LD1086#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 1.5A, 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 1.5A, TJ = 25°C IO = 0 to 1.5A IO = 1.5A VI ≤30V VI - VO = 5V VI - VO = 25V TA = 25°C, 30ms pulse f = 120 Hz, CO = 25 μF, IO = 1.5A VI = 8.3 ± 3V 60 1.5 0.05 Min. 3.267 3.234 Typ. 3.3 3.3 0.5 1 1 7 1.3 5 2 0.2 0.008 79 0.003 0.5 TA = 125°C, 1000Hrs 0.5 0.04 Max. 3.333 3.366 6 6 10 25 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. 10/37 www.DataSheet4U.com LD1086xx Electrical characteristics Table 8. Symbol VO ΔVO ΔVO Vd Iq Isc Electrical characteristics of LD1086#36 (VI=6.6V, 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 1.5A, VI = 5.2 to 30V Line regulation IO = 0 mA, VI = 5.2 to 18V, TJ = 25°C IO = 0 mA, VI = 5.2 to 18V Load regulation Dropout voltage Quiescent current Short circuit current Thermal regulation IO = 0 to 1.5A, TJ = 25°C IO = 0 to 1.5A IO = 1.5A VI ≤30V VI - VO = 5V VI - VO = 25V TA = 25°C, 30ms pulse f = 120 Hz, CO = 25 μF, IO = 1.5A VI = 8.6 ± 3V 60 1.5 0.05 Min. 3.564 3.528 Typ. 3.6 3.6 0.5 1 3 7 1.3 5 2 0.2 0.01 78 0.003 0.5 TA = 125°C, 1000Hrs 0.5 0.04 Max. 3.636 3.672 10 10 15 25 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. 11/37 www.DataSheet4U.com Electrical characteristics LD1086xx Table 9. Symbol VO ΔVO ΔVO Vd Iq Isc Electrical characteristics of LD1086#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 1.5A, 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 1.5A, TJ = 25°C IO = 0 to 1.5A IO = 1.5A VI ≤30V VI - VO = 5V VI - VO = 25V TA = 25°C, 30ms pulse f = 120 Hz, CO = 25 μF, IO = 1.5A VI = 10 ± 3V 60 1.5 0.05 Min. 4.95 4.9 Typ. 5 5 0.5 1 5 10 1.3 5 2 0.2 0.01 75 0.003 0.5 TA = 125°C, 1000Hrs 0.5 0.04 Max. 5.05 5.1 10 10 20 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 =