LMS1585AEP/LMS1587EP Enhanced Plastic 5A and 3A Low Dropout Fast Response Regulators General Description Features The LMS1585AEP and LMS1587EP are low dropout positive regulators with output load current of 5A and 3A respectively. Their low dropout voltage (1.2V) and fast transient response make them an excellent solution for low voltage microprocessor applications. The LMS1585AEP/87EP are available in adjustable versions, which can set the output voltage with only two external resistors. In addition, they are also available in 1.5V and 3.3V fixed voltage versions (Note 12). The LMS1585AEP/87EP circuits include a zener trimmed bandgap reference, current limiting and thermal shutdown. The LMS1585AEP/87EP series are available in TO-220 and TO-263 packages. ENHANCED PLASTIC • Extended Temperature Performance of −40˚C to 125˚C • Baseline Control - Single Fab & Assembly Site • Process Change Notification (PCN) • Qualification & Reliability Data • Solder (PbSn) Lead Finish is standard • Enhanced Diminishing Manufacturing Sources (DMS) Support n n n n n Fast transient response Available in Adjustable, 1.5V, and 3.3V versions Current limiting and thermal protection Line regulation 0.005% (typical) Load regulation 0.05% (typical) Applications n Low voltage logic supplies n Selected Military Applications n Selected Avionics Applications Ordering Information PART NUMBER VID PART NUMBER NS PACKAGE NUMBER (Note 3) LMS1585AIS33EP V62/04639-01 TS3B LMS1585AISADJEP V62/04639-02 TS3B LMS1587ISXADJEP V62/04639-03 TS3B (Notes 1, 2) TBD TBD Note 1: For the following (Enhanced Plastic) version, check for availability: LMS1585ACT3.3EP, LMS1585ACTADJEP, LMS1585AIT1.5EP, LMS1585AIT3.3EP, LMS1585AITADJEP, LMS1585ACS1.5EP, LMS1585ACS3.3EP, LMS1585ACSADJEP, LMS1585AIS1.5EP, LMS1585ACSX33EP, LMS1585CSXADJEP, LMS1585AISX15EP, LMS1585AISX33EP, LMS1585ASXADJEP, LMS1587CT1.5EP, LMS1587CT3.3EP, LMS1587CTADJEP, LMS1587IT1.5EP, LMS1587IT3.3EP, LMS1587ITADJEP, LMS1587CS1.5EP, LMS1587CS3.3EP, LMS1587CSADJEP, LMS1587IS1.5EP, LMS1587IS3.3EP, LMS1587ISADJEP, LMS1587CSX3.3EP, LMS1587CSXADJEP, LMS1587ISX1.5EP, LMS1587ISX3.3EP. Parts listed with an "X" are provided in Tape & Reel and parts without an "X" are in Rails. Note 2: FOR ADDITIONAL ORDERING AND PRODUCT INFORMATION, PLEASE VISIT THE ENHANCED PLASTIC WEB SITE AT: www.national.com/ mil Note 3: Refer to package details under Physical Dimensions © 2004 National Semiconductor Corporation DS200998 www.national.com LMS1585AEP/LMS1587EP Enhanced Plastic 5A and 3A Low Dropout Fast Response Regulators June 2004 LMS1585AEP/LMS1587EP Enhanced Plastic Typical Application 20099801 Connection Diagrams TO-220 TO-263 20099836 Top View 20099835 Top View Simplified Schematic 20099814 www.national.com 2 Power Dissipation (Note 5) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Range Maximum Input to Output Voltage (VIN to GND) Internally Limited Junction Temperature (TJ) (Note 5) 150˚C -65˚C to 150˚C Lead Temperature 260˚C, 10 sec ESD Tolerance (Note 6) 2000V 13V Electrical Characteristics Typicals and limits appearing in normal type apply for TJ = 25˚C. Limits appearing in Boldface type apply over the entire junction temperature range for operation, 0˚C to 125˚C for commercial grade and −40˚C to 125˚C for Enhanced Plastic. Symbol VREF VOUT ∆VOUT ∆VOUT Parameter Reference Voltage Output Voltage Line Regulation (Note 9) Load Regulation (Note 9) VIN−VOUT Dropout Voltage Min (Note 8) Typ (Note 7) Max (Note 8) Units LMS1585A-ADJEP VIN−VOUT = 3V, IOUT = 10mA 10mA ≤ IOUT ≤ 5A, 1.5V ≤ VIN−VOUT ≤ 5.75V 1.238 1.225 1.25 1.250 1.262 1.275 V V LMS1587-ADJEP 10mA ≤ IOUT ≤ 3A, 1.5V ≤ VIN−VOUT ≤ 5.75V 1.225 1.250 1.275 V LMS1585A-1.5EP IOUT = 0mA, VIN = 5V 0 ≤ IOUT ≤ 5A, 3V ≤ VIN ≤ 7V 1.485 1.470 1.500 1.515 1.530 V V LMS1585A-3.3EP IOUT = 0mA, VIN = 5V 0 ≤ IOUT ≤ 5A, 4.75V ≤ VIN ≤ 7V 3.267 3.235 3.300 3.300 3.333 3.365 V V LMS1587-1.5EP VIN = 5V, IOUT = 0mA, TJ = 25˚C 0≤ IOUT ≤ 3A, 3V ≤ VIN ≤ 7V 1.485 1.470 1.500 1.500 1.515 1.530 V V LMS1587-3.3EP 0 ≤ IOUT ≤ 3A, 4.75V ≤ VIN ≤ 7V 3.235 3.300 3.365 V LMS1585AEP/87-ADJEP IOUT = 10mA, 2.75V ≤ VIN ≤ 7V 0.005 0.2 % LMS1585AEP/87-3.3EP IOUT = 0mA, 4.75V ≤ VIN ≤ 7V 0.005 0.2 % LMS1585AEP/87-1.5EP IOUT = 0mA, 3V ≤ VIN ≤ 7V 0.005 0.2 % LMS1585A-ADJEP VIN−VOUT = 3V, 10mA ≤ IOUT ≤ 5A 0.3 0.5 % 0.05 LMS1585A-1.5EP/LMS1585A-3.3EP VIN = 5V, 0 ≤ IOUT ≤ 5A 0.05 0.05 0.3 0.5 % LMS1587-ADJEP VIN−VOUT = 3V, 10mA ≤ IOUT ≤ 3A 0.05 0.05 0.3 0.5 % LMS1587-1.5EP/LMS1587-3.3EP VIN = 5V, 0 ≤ IOUT ≤ 3A 0.05 0.05 0.3 0.5 % % LMS1585A-ADJEP/LMS1587-ADJEP ∆VREF = 1%, IOUT = 3A 1.15 1.3 V LMS1585A-3.3EP/LMS1587-3.3EP/ LMS1585A-1.5EP/LMS1587-1.5EP ∆VOUT = 1%, IOUT = 3A 1.15 1.3 V LMS1585A-ADJEP ∆VREF = 1%, IOUT = 5A 1.2 1.4 V LMS1585A-1.5EP/LMS1585A-3.3EP ∆VOUT = 1%, IOUT = 5A 1.2 1.4 V Conditions 3 www.national.com LMS1585AEP/LMS1587EP Enhanced Plastic Absolute Maximum Ratings (Note 4) LMS1585AEP/LMS1587EP Enhanced Plastic Electrical Characteristics (Continued) Typicals and limits appearing in normal type apply for TJ = 25˚C. Limits appearing in Boldface type apply over the entire junction temperature range for operation, 0˚C to 125˚C for commercial grade and −40˚C to 125˚C for Enhanced Plastic. Symbol ILIMIT Min (Note 8) Typ (Note 7) LMS1585A-ADJEP/LMS1585A-3.3EP/ LMS1585A-1.5EP VIN−VOUT = 5.5V 5.0 6.6 A LMS1587-ADJEP/LMS1587-3.3EP/ LMS1587-1.5EP VIN−VOUT = 5.5V 3.1 4.3 A Parameter Current Limit Conditions Max (Note 8) Units Minimum Load Current (Note 10) LMS1585AEP/87-ADJEP 1.5V ≤ VIN−VOUT ≤ 5.75V 2.0 10.0 mA Quiescent Current LMS1585A-3.3EP/LMS1587-3.3EP/ LMS1585A-1.5EP/LMS1587-1.5EP VIN = 5V 7.0 13.0 mA Thermal Regulation TA = 25˚C, 30ms Pulse Ripple Rejection LMS1585A-ADJEP fRIPPLE = 120Hz, VIN−VOUT = 3V, IOUT = 5A, COUT = 25µF Tantalum LMS1585A-1.5EP fRIPPLE = 120Hz, COUT = 25µF Tantalum, IOUT = 5A, VIN = 4.5V 72 dB 72 dB 72 dB LMS1587-ADJEP fRIPPLE = 120Hz, VIN−VOUT = 3V, IOUT = 3A COUT = 25µF Tantalum 72 dB 72 dB 72 dB LMS1587-3.3EP fRIPPLE = 120Hz, COUT = 25µF Tantalum, IOUT = 3A, VIN = 6.3V Adjust Pin Current Adjust Pin Current %/W LMS1585A-3.3EP fRIPPLE = 120Hz, COUT = 25µF Tantalum, IOUT = 5A, VIN = 6.3V LMS1587-1.5EP fRIPPLE = 120Hz, COUT = 25µF Tantalum, IOUT = 3A, VIN = 4.5V 60 0.003 60 55 10mA ≤ IOUT ≤ IFULLLOAD, 1.5V ≤ VIN−VOUT ≤ 5.75V (Note 11) Temperature Stability 120 0.2 µA µA 0.5 % Long Term Stability TA = 125˚C, 1000Hrs 0.03 % RMS Output Noise (% of VOUT) 10Hz ≤ f ≤ 10kHz 0.003 % Thermal Resistance Junction-to-Case 3-Lead TO-263: Control/Output Section 3-Lead TO-220: Control/Output Section 0.65/2.7 0.65/2.7 ˚C/W ˚C/W Note 4: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics. Note 5: The maximum power dissipation is a function of TJ(max) , θJA, and TA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(max)–T A)/θJA. All numbers apply for packages soldered directly into a PC board. Note 6: For testing purposes, ESD was applied using human body model, 1.5kΩ in series with 100pF. Note 7: Typical Values represent the most likely parametric norm. Note 8: All limits are guaranteed by testing or statistical analysis. Note 9: Load and line regulation are measured at constant junction temperature, and are guaranteed up to the maximum power dissipation of 30W. Power dissipation is determined by the input/output differential and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range. Note 10: The minimum output current required to maintain regulation. Note 11: IFULLLOAD is 5A for LMS1585AEP and 3A for LMS1587EP. Note 12: Consult factory for other fixed voltage options. www.national.com 4 LMS1585AEP/LMS1587EP Enhanced Plastic Application Note Output Voltage The adjustable version develops at 1.25V reference voltage, (VREF), between the output and the adjust terminal. As shown in Figure 1, this voltage is applied across resistor R1 to generate a constant current I1. This constant current then flows through R2. The resulting voltage drop across R2 adds to the reference voltage to sets the desired output voltage. The current IADJ from the adjustment terminal introduces an output error. But since it is small (120µA max), it becomes negligible when R1 is in the 100Ω range. For fixed voltage devices, R1 and R2 are integrated inside the devices. 20099872 FIGURE 1. Basic Adjustable Regulator 5 www.national.com LMS1585AEP/LMS1587EP Enhanced Plastic Physical Dimensions inches (millimeters) unless otherwise noted 3-Pin TO-263 NS Package Number TS3B www.national.com 6 inches (millimeters) unless otherwise noted (Continued) 3-Pin TO-220 NS Package Number T03B LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. 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