LD1585C SERIES 5A LOW DROPOUT FAST RESPONSE POSITIVE VOLTAGE REGULATOR ADJUSTABLE AND FIXED ■ ■ ■ ■ ■ ■ ■ ■ ■ TYPICAL DROPOUT 1.2V FAST TRANSIENT RESPONSE THREE TERMINAL ADJUSTABLE OR FIXED OUTPUT VOLTAGE 1.5V 1.8V, 2.5V, 2.85V, 3.3V, 5V, 8V, 9V, 12V. GUARANTEED OUTPUT CURRENT UP TO 5A OUPUT TOLERANCE ±1% AT 25°C AND ±2% IN FULL TEMPERATURE RANGE INTERNAL POWER AND THERMAL LIMIT WIDE OPERATING TEMPERATURE RANGE 0°C TO 125°C PACKAGE AVAILABLE : TO-220, D2PAK, D2PAK/A PINOUT COMPATIBILITY WITH STANDARD ADJUSTABLE VREG DESCRIPTION The LD1585C is a LOW DROP Voltage Regulator able to provide up to 5A of Output Current. Dropout is guaranteed at a maximum of 1.4V at the maximum output current, decreasing at lower loads. The device has been improved to be utilized in low voltage applications where transient response and minimum input voltage are critical. The most important feature of the device consist in lower dropout voltage and very fast transient TO-220 D2PAK D2PAK/A response. 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 LD1585C 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, D2PAK and D2PAK/A. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within ±1% at 25°C. SCHEMATIC DIAGRAM September 2003 1/17 LD1585C SERIES ABSOLUTE MAXIMUM RATINGS Symbol Parameter² Value Unit VI DC Input Voltage 30 V IO Output Current Internally Limited mA Internally Limited mW -55 to +150 °C 0 to +125 °C PD Power Dissipation Tstg Storage Temperature Range Top Operating Junction Temperature Range Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. THERMAL DATA Symbol Parameter TO-220 D2PAK Unit Rthj-case Thermal Resistance Junction-case 3 3 °C/W Rthj-amb Thermal Resistance Junction-ambient 50 62.5 °C/W APPLICATION CIRCUITS R2 VO = VREF (1 + ) R1 2/17 LD1585C SERIES CONNECTION DIAGRAM (top view) TO-220 D2PAK D2PAK/A ORDERING CODES TO-220 D2PAK (*) D2PAK/A (*) OUTPUT VOLTAGE LD1585CV15 LD1585CV18 LD1585CV25 LD1585CV28 LD1585CV33 LD1585CV50 LD1585CV80 LD1585CV90 LD1585CV12 LD1585CV LD1585CD2T15 LD1585CD2T18 LD1585CD2T25 LD1585CD2T28 LD1585CD2T33 LD1585CD2T50 LD1585CD2T80 LD1585CD2T90 LD1585CD2T120 LD1585CD2T LD1585CD2M15 LD1585CD2M18 LD1585CD2M25 LD1585CD2M28 LD1585CD2M33 LD1585CD2M50 LD1585CD2M80 LD1585CD2M90 LD1585CD2M120 LD1585CD2M 1.5 V 1.8 V 2.5 V 2.85 V 3.3 V 5.0 V 8.0 V 9.0 V 12.0 V ADJ (*) Available in Tape & Reel with the suffix "R" for fixed version and "-R" for adjustable version. 3/17 LD1585C SERIES ELECTRICAL CHARACTERISTICS OF LD1585#15 (VI=4.5V, CI = CO =10µF, TJ = 0 to 125°C, unless otherwise specified.) Symbol VO ∆VO Parameter Test Conditions Output Voltage IO = 0 mA Line Regulation IO = 0 to 5A VI = 3 to 25V (note 1) IO = 0 mA VI = 3 to 15V TJ = 25°C IO = 0 mA ∆VO Load Regulation 1.5 1.515 V 1.47 1.5 1.53 V 0.005 0.2 % 0.005 0.2 % 0.3 % 0.05 0.5 % IO =5 A 1.2 1.4 V 5 10 mA Iq Quiescent Current VI ≤ 25V Short Circuit Current VI - VO = 5V 5.5 Termal Regulation TJ = 25°C, 30ms pulse Supply Voltage Rejection f = 120 Hz, CO = 25 µF, IO = 5A VI - VO = 3 ± 1V RMS Output Noise Voltage (% of VO) TJ = 25°C TJ = 125°C Temperature Stability Long Term Stability 1.485 VI = 3 to 15V Unit 0.05 Isc S S Max. IO = 0 to 5A TJ = 25°C Dropout Voltage eN Typ. IO = 0 to 5A Vd SVR TJ = 25°C Min. 7 0.004 60 A 0.02 %/W 75 dB f =10Hz to 10KHz 0.003 % 1000Hrs 0.5 0.03 1 % % NOTE 1: See short-circuit current curve for available output current at fixed dropout. ELECTRICAL CHARACTERISTICS OF LD1585#18 (VI=4.8V, CI = CO =10µF, TJ = 0 to 125°C, unless otherwise specified.) Symbol VO ∆VO Parameter Test Conditions Output Voltage IO = 0 mA Line Regulation IO = 0 to 5A VI = 3.3 to 25V (note 1) IO = 0 mA VI = 3.3 to 15V TJ = 25°C IO = 0 mA ∆VO Load Regulation TJ = 25°C Min. Typ. Max. Unit 1.782 1.8 1.818 V 1.764 1.8 1.836 V mV VI = 3.3 to 15V 0.005 0.2 0.005 0.2 IO = 0 to 5A TJ = 25°C 0.05 0.3 IO = 0 to 5A 0.05 0.5 mV Vd Dropout Voltage IO =5 A 1.2 1.4 V Iq Quiescent Current VI ≤ 25V 5 10 mA 0.02 %/W Isc SVR eN S S Short Circuit Current VI - VO = 5.5V Termal Regulation TJ = 25°C, 30ms pulse Supply Voltage Rejection f = 120 Hz, CO = 25 µF, IO = 5A VI - VO = 3 ± 1V RMS Output Noise Voltage (% of VO) TJ = 25°C TJ = 125°C Temperature Stability Long Term Stability 7 0.004 60 A 75 dB f =10Hz to 10KHz 0.003 % 1000Hrs 0.5 0.03 NOTE 1: See short-circuit current curve for available output current at fixed dropout. 4/17 5.5 1 % % LD1585C SERIES ELECTRICAL CHARACTERISTICS OF LD1585#25 (VI=5.5V, CI = CO =10µF, TJ = 0 to 125°C, unless otherwise specified.) Symbol VO ∆VO Parameter Test Conditions Output Voltage IO = 0 mA Line Regulation IO = 0 to 5A VI = 4 to 25V (note 1) IO = 0 mA VI = 4 to 16V TJ = 25°C IO = 0 mA ∆VO Load Regulation TJ = 25°C 2.475 2.5 2.525 V 2.45 2.5 2.55 V 0.005 0.2 mV 0.005 0.2 0.05 0.3 0.05 0.5 IO =5 A 1.2 1.4 V 5 10 mA Iq Quiescent Current VI ≤ 25V Short Circuit Current VI - VO = 5.5V Termal Regulation TJ = 25°C, 30ms pulse Supply Voltage Rejection f = 120 Hz, CO = 25 µF, IO = 5A VI - VO = 3 ± 1V RMS Output Noise Voltage (% of VO) TJ = 25°C TJ = 125°C Temperature Stability Long Term Stability Unit IO = 0 to 5A TJ = 25°C Isc S S Max. IO = 0 to 5A Dropout Voltage eN Typ. VI = 4 to 16V Vd SVR Min. 5.5 7 0.004 60 mV A 0.02 %/W 75 dB f =10Hz to 10KHz 0.003 % 1000Hrs 0.5 0.03 1 % % NOTE 1: See short-circuit current curve for available output current at fixed dropout. ELECTRICAL CHARACTERISTICS OF LD1585#285 (VI=5.85V, CI = CO =10µF, TJ = 0 to 125°C, unless otherwise specified.) Symbol VO ∆VO Parameter Test Conditions Output Voltage IO = 0 mA Line Regulation IO = 0 to 5A VI = 4.5 to 30V (note 1) IO = 0 mA VI = 4.5 to 18V TJ = 25°C IO = 0 mA ∆VO Load Regulation TJ = 25°C Min. Typ. Max. Unit 2.821 2.85 2.879 V 2.793 2.85 2.907 V mV VI = 4.5 to 18V 0.005 0.2 0.005 0.2 IO = 0 to 5A TJ = 25°C 0.05 0.3 IO = 0 to 5A 0.05 0.5 mV Vd Dropout Voltage IO =5 A 1.2 1.4 V Iq Quiescent Current VI ≤ 25V 5 10 mA 0.02 %/W Isc SVR eN S S Short Circuit Current VI - VO = 5.5V Termal Regulation TJ = 25°C, 30ms pulse Supply Voltage Rejection f = 120 Hz, CO = 25 µF, IO = 5A VI - VO = 3 ± 1V RMS Output Noise Voltage (% of VO) TJ = 25°C TJ = 125°C Temperature Stability Long Term Stability 5.5 7 0.004 60 A 75 dB f =10Hz to 10KHz 0.003 % 1000Hrs 0.5 0.03 1 % % NOTE 1: See short-circuit current curve for available output current at fixed dropout. 5/17 LD1585C SERIES ELECTRICAL CHARACTERISTICS OF LD1585#33 (VI=6.3V, CI = CO =10µF, TJ = 0 to 125°C, unless otherwise specified.) Symbol VO ∆VO Parameter Test Conditions Output Voltage IO = 0 mA Line Regulation IO = 0 to 5A VI = 4.8 to 25V (note 1) IO = 0 mA VI = 4.8 to 18V TJ = 25°C IO = 0 mA ∆VO Load Regulation TJ = 25°C 3.267 3.3 3.333 V 3.35 3.366 V mV 0.005 0.2 0.005 0.2 0.05 0.3 0.05 0.5 IO =5 A 1.2 1.4 V 5 10 mA Iq Quiescent Current VI ≤ 25V Short Circuit Current VI - VO = 5.5V Termal Regulation TJ = 25°C, 30ms pulse Supply Voltage Rejection f = 120 Hz, CO = 25 µF, IO = 5A VI - VO = 3 ± 1V RMS Output Noise Voltage (% of VO) TJ = 25°C TJ = 125°C Temperature Stability Long Term Stability Unit IO = 0 to 5A TJ = 25°C Isc S S Max. IO = 0 to 5A Dropout Voltage eN Typ. 3.234 VI = 4.9 to 18V Vd SVR Min. 5.5 7 0.004 60 mV A 0.02 %/W 75 dB f =10Hz to 10KHz 0.003 % 1000Hrs 0.5 0.03 1 % % NOTE 1: See short-circuit current curve for available output current at fixed dropout. ELECTRICAL CHARACTERISTICS OF LD1585#50 (VI=8V, CI = CO =10µF, TJ = 0 to 125°C, unless otherwise specified.) Symbol VO ∆VO Parameter Test Conditions Output Voltage IO = 0 mA Line Regulation IO = 0 to 5A VI = 6.5 to 30V (note 1) IO = 0 mA VI = 6.5 to 20V TJ = 25°C IO = 0 mA ∆VO Load Regulation TJ = 25°C Min. Typ. Max. Unit 4.95 5 5.05 V 4.9 5 5.1 V mV VI = 6.5 to 20V 0.005 0.2 0.005 0.2 IO = 0 to 5A TJ = 25°C 0.05 0.3 IO = 0 to 5A 0.05 0.5 mV Vd Dropout Voltage IO =5 A 1.2 1.4 V Iq Quiescent Current VI ≤ 25V 5 10 mA 0.02 %/W Isc SVR eN S S Short Circuit Current VI - VO = 5.5V Termal Regulation TJ = 25°C, 30ms pulse Supply Voltage Rejection f = 120 Hz, CO = 25 µF, IO = 5A VI - VO = 3 ± 1V RMS Output Noise Voltage (% of VO) TJ = 25°C TJ = 125°C Temperature Stability Long Term Stability 7 0.004 60 A 75 dB f =10Hz to 10KHz 0.003 % 1000Hrs 0.5 0.03 NOTE 1: See short-circuit current curve for available output current at fixed dropout. 6/17 5.5 1 % % LD1585C SERIES ELECTRICAL CHARACTERISTICS OF LD1585#80 (VI=11V, C I = CO =10µF, TJ = 0 to 125°C, unless otherwise specified.) Symbol VO ∆VO Parameter Test Conditions Output Voltage IO = 0 mA Line Regulation IO = 0 to 5A VI = 9.5 to 30V (note 1) IO = 0 mA VI = 9.5 to 20V TJ = 25°C IO = 0 mA ∆VO Load Regulation TJ = 25°C 7.92 8 8.08 V 8 8.16 V mV 0.005 0.2 0.005 0.2 0.05 0.3 0.05 0.5 IO =5 A 1.2 1.4 V 5 10 mA Iq Quiescent Current VI ≤ 25V Short Circuit Current VI - VO = 5.5V 5.5 Termal Regulation TJ = 25°C, 30ms pulse Supply Voltage Rejection f = 120 Hz, CO = 25 µF, IO = 5A VI - VO = 3 ± 1V RMS Output Noise Voltage (% of VO) TJ = 25°C TJ = 125°C Temperature Stability Long Term Stability Unit IO = 0 to 5A TJ = 25°C Isc S S Max. IO = 0 to 5A Dropout Voltage eN Typ. 7.84 VI = 9.5 to 20V Vd SVR Min. 7 0.004 60 mV A 0.02 %/W 75 dB f =10Hz to 10KHz 0.003 % 1000Hrs 0.5 0.03 1 % % NOTE 1: See short-circuit current curve for available output current at fixed dropout. ELECTRICAL CHARACTERISTICS OF LD1585#90 (VI=12V, C I = CO =10µF, TJ = 0 to 125°C, unless otherwise specified.) Symbol Parameter Test Conditions VO Output Voltage IO = 0 mA TJ = 25°C ∆VO Line Regulation ∆VO Load Regulation IO = 0 to 5A TJ = 25°C IO = 0 to 5A Vd Dropout Voltage IO =5 A Iq Quiescent Current VI ≤ 25V Isc Short Circuit Current VI - VO = 5.5V IO = 0 to 5A VI = 10.5 to 30V (note 1) SVR eN S S IO = 0 mA VI = 10.5 to 20V IO = 0 mA VI = 10.5 to 20V Typ. Max. Unit 8.91 9 9.09 V 8.82 TJ = 25°C Termal Regulation TJ = 25°C, 30ms pulse Supply Voltage Rejection f = 120 Hz, CO = 25 µF, IO = 5A VI - VO = 3 ± 1V RMS Output Noise Voltage (% of VO) TJ = 25°C TJ = 125°C Temperature Stability Long Term Stability Min. 5.5 9 9.18 V 0.005 0.2 mV 0.005 0.2 0.05 0.3 0.05 0.5 1.2 1.4 V 5 10 mA 7 0.004 60 mV A 0.02 %/W 75 dB f =10Hz to 10KHz 0.003 % 1000Hrs 0.5 0.03 1 % % NOTE 1: See short-circuit current curve for available output current at fixed dropout. 7/17 LD1585C SERIES ELECTRICAL CHARACTERISTICS OF LD1585#120 (VI=15V, C I = CO =10µF, TJ = 0 to 125°C, unless otherwise specified.) Symbol VO ∆VO Parameter Test Conditions Output Voltage IO = 0 mA Line Regulation IO = 0 to 5A VI = 13.5 to 30V (note 1) IO = 0 mA VI = 13.5 to 25V TJ = 25°C IO = 0 mA ∆VO Load Regulation TJ = 25°C 11.88 12 12.12 V 12 12.24 V mV 0.005 0.2 0.005 0.2 0.05 0.3 0.05 0.5 IO =5 A 1.2 1.4 V 5 10 mA Iq Quiescent Current VI ≤ 25V Short Circuit Current VI - VO = 5.5V 5.5 Termal Regulation TJ = 25°C, 30ms pulse Supply Voltage Rejection f = 120 Hz, CO = 25 µF, IO = 5A VI - VO = 3 ± 1V RMS Output Noise Voltage (% of VO) TJ = 25°C TJ = 125°C Temperature Stability Long Term Stability Unit IO = 0 to 5A TJ = 25°C Isc S S Max. IO = 0 to 5A Dropout Voltage eN Typ. 11.76 VI = 13.5 to 25V Vd SVR Min. 7 0.004 60 mV A 0.02 %/W 75 dB f =10Hz to 10KHz 0.003 % 1000Hrs 0.5 0.03 1 % % NOTE 1: See short-circuit current curve for available output current at fixed dropout. ELECTRICAL CHARACTERISTICS OF LD1585# (VI=4.25V, CI = CO =10µF, TJ = 0 to 125°C, unless otherwise specified.) Symbol VO Parameter Test Conditions Output Voltage IO = 10mA ∆VO Line Regulation IO = 10mA to 5AVI - VO =1.5 to 25V (note 1) IO = 10mA VI = 2.75 to 15V TJ = 25°C ∆VO Load Regulation IO = 10mA to 5ATJ = 25°C IO = 0 to 5A Vd Dropout Voltage IO = 5A IO = 10mA IO(min) Isc VI - VO = 3V TJ = 25°C Minimum Load Current VI = 25V Short Circuit Current VI - VO = 5.5V Termal Regulation TJ = 25°C, 30ms pulse f = 120 Hz, IO = 5A IADJ CO = 25 µF, CADJ = 25 µF, VI - VO = 3 ± 1V Adjust Pin Current IO = 10 mA ∆IADJ Adjust Pin Current Change IO = 10mA to 5A eN RMS Output Noise Voltage (% of VO) TJ = 25°C f =10Hz to 10KHz TJ = 125°C 1000Hrs Temperature Stability Long Term Stability VI = 3 to 25V (note 1) NOTE 1: See short-circuit current curve for available output current at fixed dropout. 8/17 Max. Unit 1.237 1.25 1.263 V 1.25 1.275 V 0.015 0.2 % 0.1 0.2 % 0.1 0.3 % 0.25 0.5 % 1.2 1.4 V 3 10 mA 5.5 Supply Voltage Rejection Typ. 1.225 VI = 2.75 to 15V SVR S S Min. 7 0.004 60 A 0.02 75 %/W dB 50 100 µA 0.2 5 µA 0.003 % 0.5 0.5 % % LD1585C SERIES TYPICAL CHARACTERISTICS (unless otherwise specified Tj = 25°C, CI=CO=10µF tant) Figure 1 : Output Voltage vs Temperature Figure 4 : Line Regulation vs Temperature Figure 2 : Short Circuit Current vs Dropout Voltage Figure 5 : Load Regulation vs Temperature Figure 3 : Line Regulation vs Temperature Figure 6 : Load Regulation vs Temperature 9/17 LD1585C SERIES Figure 7 : Dropout Voltage vs Temperature Figure 10 : Adjust Pin Current vs Temperature Figure 8 : Dropout Voltage vs Output Current Figure 11 : Adjust Pin Current Change vs Temperature Figure 9 : Adjust Pin Current vs Input Voltage Figure 12 : Quiescent Current vs Temperature 10/17 LD1585C SERIES Figure 13 : Reference Voltage vs Temperature Figure 16 : Supply Voltage Rejection vs Output Current Figure 14 : Minimum Load Current vs Temperature Figure 17 : Supply Voltage Rejection vs Frequency Figure 15 : Supply Voltage Rejection vs Output Current Figure 18 : Supply Voltage Rejection vs Frequency 11/17 LD1585C SERIES Figure 19 : Supply Voltage Rejection vs Temperature Figure 22 : Load Transient VI=15 V, I O=0.1 to 5 A, CI = 10µF(tant), CO=10µF(tant) Figure 20 : Supply Voltage Rejection vs Temperature Figure 23 : Load Transient VI=7 V, IO=0.1 to 5 A, CI = 10µF(tant), CO=10µF(tant) Figure 21 : Line Transient VI=15 to 16V, IO=200mA, CI = 1µF(tant), CO=10µF(tant), 12/17 LD1585C SERIES TO-220 MECHANICAL DATA DIM. mm. MIN. TYP inch MAX. MIN. TYP. MAX. A 4.40 4.60 0.173 0.181 C 1.23 1.32 0.048 0.051 D 2.40 2.72 0.094 0.107 D1 1.27 0.050 E 0.49 0.70 0.019 0.027 F 0.61 0.88 0.024 0.034 F1 1.14 1.70 0.044 0.067 F2 1.14 1.70 0.044 0.067 G 4.95 5.15 0.194 0.203 G1 2.4 2.7 0.094 0.106 H2 10.0 10.40 0.393 0.409 L2 16.4 0.645 L4 13.0 14.0 0.511 0.551 L5 2.65 2.95 0.104 0.116 L6 15.25 15.75 0.600 0.620 L7 6.2 6.6 0.244 0.260 L9 3.5 3.93 0.137 0.154 DIA. 3.75 3.85 0.147 0.151 P011C 13/17 LD1585C SERIES D2PAK MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. MIN. TYP. MAX. A 4.4 4.6 0.173 0.181 A1 2.49 2.69 0.098 0.106 A2 0.03 0.23 0.001 0.009 B 0.7 0.93 0.027 0.036 B2 1.14 1.7 0.044 0.067 C 0.45 0.6 0.017 0.023 C2 1.23 1.36 0.048 0.053 D 8.95 9.35 0.352 0.368 10.4 0.393 D1 E 8 10 E1 0.315 8.5 0.409 0.335 G 4.88 5.28 0.192 0.208 L 15 15.85 0.590 0.624 L2 1.27 1.4 0.050 0.055 L3 1.4 1.75 0.055 0.068 M 2.4 3.2 0.094 R V2 0.4 0˚ 0.126 0.016 8˚ 0˚ 8˚ P011P6G 14/17 LD1585C SERIES D2PAK/A MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. MIN. TYP. MAX. A 4.40 4.60 0.173 0.181 A1 2.49 2.69 0.098 0.106 B 0.7 0.93 0.027 0.036 B2 1.14 1.7 0.044 0.067 C 0.45 0.60 0.017 0.023 C2 1.21 1.36 0.047 0.053 D 8.95 9.35 0.352 0.368 E 10 10.4 0.393 0.409 G 4.88 5.28 0.192 0.208 L 15 15.85 0.590 0.106 L2 1.27 1.4 0.050 0.055 15/17 LD1585C SERIES Tape & Reel D2PAK-P 2PAK-D 2PAK/A-P 2PAK/A MECHANICAL DATA mm. inch DIM. MIN. TYP A MIN. TYP. 180 13.0 13.2 MAX. 7.086 C 12.8 D 20.2 0.795 N 60 2.362 T 16/17 MAX. 0.504 0.512 14.4 0.519 0.567 Ao 10.50 10.6 10.70 0.413 0.417 0.421 Bo 15.70 15.80 15.90 0.618 0.622 0.626 Ko 4.80 4.90 5.00 0.189 0.193 0.197 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 11.9 12.0 12.1 0.468 0.472 0.476 LD1585C SERIES Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics All other names are the property of their respective owners © 2003 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com 17/17