SLA3002M

SI3018 ALLEGRO | Alldatasheet

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27468.18 LOW-VOLTAGE, HIGH-CURRENT

1.8 V LINEAR REGULATOR

The SI-3018LSA is designed to meet the requirement for increased integration and reliability in low-voltage, high-current, linear regulator applications such as personal computers (PCs) and set-top boxes. Each device incorporates a monolithic low-level reference and control circuit with a high-current pnp transistor in a power multi-chip module (PMCM™). Regulated output voltages of 2.5 V or 3.3 V are also available. The high-current pass element provides a low dropout voltage with output current to 1 A. Regulator accuracy of ±2 % and excellent temperature characteristics are provided. The logic-compatible ENABLE input gives the designer complete control over power up, power down, and standby or sleep. These devices are supplied in a fully molded 8-lead miniature surface-mount package (tape and reel) with enhanced power-dissipating qualities. They are rated for continuous operation between -30°C and +100°C.

FEATURES

I

1 A Output Current

I Low Dropout voltage I LSTTL/CMOS-Compatible On/Off Control Less Than 1 µA “Sleep” Current I Internal Foldback Overcurrent Limiting I Internal Thermal Protection I Surface-Mount Package Always order by complete part number: SI-3018LSA-TL , where “-TL” indicates tape and reel. ABSOLUTE MAXIMUM RATINGS Package Power Dissipation, Output Junction Temperature, Operating Temperature Range, Storage Temperature Range, * Output current rating may be limited by duty cycle, ambient temperature, and heat sinking. Under any set of conditions, do not exceed the specified current rating or a junction temperature of 150˚C. † Fault conditions that produce excessive junction temperature will activate the device’s thermal protection circuitry. These conditions can be tolerated but should be avoided. SI-3018LSA Dwg. PK-012 IN GND OUT INTERNAL CONNECTION ENABLE SUPPLY GND OUT IC VR SUB VS TM

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000 SI-3018LSA LOW-VOLTAGE, HIGH-CURRENT Copyright © 2001 Allegro MicroSystems, Inc. 1.5 1.0 0.5 100 AMBIENT TEMPERATURE in °°°°C ALLOWABLE PACKAGE POWER DISSIPATION in WATTS Dwg. GK-010-1 120 56.5 mm x 56.5 mm COPPER AREA ON GLASS-EPOXY BOARD 140 28 mm x 28 mm COPPER AREA ON GLASS-EPOXY BOARD 40 mm x 40 mm COPPER AREA ON GLASS-EPOXY BOARD 20 mm x 20 mm COPPER AREA ON GLASS-EPOXY BOARD Leads 7 and 8 are soldered to the copper area and provide heat sinking of the pass transis- tor. RECOMMENDED OPERATING CONDITIONS Output Junction Temperature Range, TJ -20 °C to +125°C INPUT SUPPLY OUTPUT OUTPUT Dwg. FK-019 GROUND GROUND ENABLE INTERNAL CONNECTION SUB THERMAL PROTECTION

LOW-VOLTAGE, HIGH-CURRENT www.allegromicro.com ELECTRICAL CHARACTERISTICS at TA = +25°C, VI = VS = 3.3 V, VE = 2.0 V (unless otherwise noted). Limits Characteristic Symbol Test Conditions Min. Typ. Max. Units Output Voltage VO IO = 500 mA 1.764 1.800 1.836 V VOQ VE = 0 V, Output Off 0.5 V Output Volt. Temp. Coeff. aVO IO = 5 mA, 0°C ≤ TJ ≤ 100°C ±0.3 mV/°C Overcurrent Limit IOM VO = 95% of VO at IO = 500 mA 1.2 1.5 A Line Regulation ∆VO(∆VI) 3.1 V ≤ VI = VS ≤ 3.5 V, IO = 300 mA 2.0 mV Load Regulation ∆VO(∆IO) 0 ≤ IO ≤ 1 A mV Dropout Voltage VImin - VO IO ≤ 1 A 0.55 1.2 V Ground Terminal Current IGND IO = 0 mA 1.7 2.5 mA IQ VE = 0 V, IO = 0 mA 1.0 µA Rejection Ratio PSRR

100 Hz ≤ f ≤ 120 Hz

2.0 V VEL Output Off 0.8 V ENABLE Input Current IEH VE = 2 V, Output On µA IEL VE = 0 V, Output Off -5.0 µA Thermal Protection Temp. TJ 135 150 Thermal Resistance RθJL To terminals 7 and 8 °C/W Typical values are at TA = +25°C and are given for circuit design information only.

Worcester, Massachusetts 01615-0036 (508) 853-5000 SI-3018LSA LOW-VOLTAGE, HIGH-CURRENT TYPICAL CHARACTERISTICS at TA = 25°C 0.2 0.1 0.3 0.4 0.5 0.4 0.8 OUTPUT CURRENT in AMPERES Dwg. GK-025 DROPOUT VOLTAGE 1.2 0.6 1.0 0.2 0.6 1.78 1.76 1.74 1.80 1.82 1.84 0.4 0.8 OUTPUT CURRENT in AMPERES Dwg. GK-026 OUTPUT VOLTAGE 1.2 0.6 1.0 0.2 1.86 VI = VS = 8 V VI = VS = 5 V VI = VS = 3.2 V 0.5 1.0 1.5 OUTPUT CURRENT in AMPERES Dwg. GK-027 OUTPUT VOLTAGE 2.0 1.0 1.5 0.5 2.0 VI = VS = 3.2 V VI = VS = 5 V VI = VS = 6 V 0.5 1.0 1.5 INPUT VOLTAGE Dwg. GK-028 OUTPUT VOLTAGE 5.0 3.0 4.0 1.0 2.0 2.0 IO = 0 A IO = 0.5 A IO = 1 A Dropout voltage Load regulation Overcurrent protection VOUT vs VIN

LOW-VOLTAGE, HIGH-CURRENT www.allegromicro.com TYPICAL CHARACTERISTICS at TA = 25°C (cont’d) 1.78 1.76 1.74 1.80 1.82 1.84 4.0 8.0 INPUT VOLTAGE Dwg. GK-029 OUTPUT VOLTAGE 6.0 2.0 1.86 IO = 1 A IO = 0.5 A IO = 0 A 5.0 4.0 8.0 INPUT VOLTAGE Dwg. GK-030 GROUND CURRENT in mA 6.0 2.0 IO = 1 A IO = 0.5 A IO = 0 A 1.0 2.0 ENABLE VOLTAGE in VOLTS Dwg. GK-023 ENABLE INPUT CURRENT in µµµµA 3.0 VI = VS = 3.3 V IO = 5 mA 1.5 2.5 0.5 Line regulation GND current ENABLE input current

Worcester, Massachusetts 01615-0036 (508) 853-5000 SI-3018LSA LOW-VOLTAGE, HIGH-CURRENT Thermal protection and heat sinking. Thermal protection circuitry turns off the device should the junction temperature rise above 135°C. This is intended only to protect the device from failures due to excessive junction temperatures and should not imply that high-temperature operation is permitted. Ambient temperature is affected by air circulation and proximity to other heat-producing components. Normal operation is resumed when the junction temperature is reduced. Output terminals 7 and 8 are the lead frame and substrate of the pass transistor and provide a low thermal-resistance path for heat sinking. In general, the maximum ambient temperature has the most effect on determining the heat sinking that is needed to maintain a safe normal operating junction temperature. The maximum heat sinking thermal resistance (RθJA) can be calculated as RθJA = (135 – TA) / IO (VI – 1.8) where TA is the maximum ambient temperature in °C, IO is the maximum output (load) current in amperes, and VI is the maximum input voltage in volts. The following graph gives the required copper foil area (soldered to leads 7 and 8) to provide the required thermal resistance. Note that more is always better and both sides of the printed wiring board can be used. ENABLE input. The ENABLE input includes an internal pull- 100 200 300 500 JUNCTION-TO-AMBIENT THERMAL RESISTANCE in °°°°C/W Dwg. GK-031 FOIL AREA in SQ. mm 130 110 120 100 1000 2000 GLASS-EPOXY PRINTED WIRING BOARD down resistor. If this terminal is not connected (open-circuit fault), the device output is turned off. Overcurrent protection. The SI-3018LSA includes an overcurrent protection circuit, which limits the output current at start up. It thus cannot be used with 1) a constant-current load, 2) a power supply with positive and negative to a common load (center-tap type power supply), 3) a series power supply, or 4) a diode or resistor in series with the device ground to raise the output voltage. Input voltage. Including ripple voltage and transients, the minimum input voltage should be greater than the sum of the output voltage and the maximum rated dropout voltage; the maximum input voltage must be less than the absolute maximum rated input voltage (16 V). In most applications, the input voltage (terminal 1, VI) and the supply voltage (terminal 3, VS) are connected together. Output capacitor. A 22 µF tantalum electrolytic capacitor is recommended between the output and ground. Very-low ESR capacitors should not be used. Input capacitor. A 0.1 µF to 10 µF tantalum capacitor is recommended between the input and ground to prevent oscilla- tion.

LOW-VOLTAGE, HIGH-CURRENT www.allegromicro.com NOTES: 1. Exact body and lead configuration at vendor’s option within limits shown. 2. Lead spacing tolerance is non-cumulative. 3. Leads 7 and 8 are internally connected together and provide heat sinking of the pass transistor. 0° TO 10° 5.1 ±0.4 6.2 ±0.3 0.5 ±0.1 Dwg. MK-006-8 mm 1.27 BSC 0.25 0.10 4.4 ±0.2 0.4 ±0.1 1.55 ±0.15 0.10 MAX. Dimensions in Millimeters (controlling dimensions)

Worcester, Massachusetts 01615-0036 (508) 853-5000 SI-3018LSA LOW-VOLTAGE, HIGH-CURRENT Tape and Reel Dimensions in Millimeters (controlling dimensions) 12.0 10.25 5.5 5.6 0.7 8.0 4.0 2.0 1.55 2.0 CENTER LINES OF CAVITY COVER TAPE Dwg. MA-015-1 2.5 0.3 USER DIRECTION OF UNREELING 2.0 180 13 ± 0.2 Dwg. MA-018-1 (MEASURED AT HUB TAPE SLOT IN CORE FOR TAPE START ACCESS HOLE 13.0 ± 0.3 (MEASURED AT HUB 15.4 ± 1.0

LOW-VOLTAGE, HIGH-CURRENT www.allegromicro.com The products described herein are manufactured in Japan by Sanken Electric Co., Ltd. for sale by Allegro MicroSystems, Inc. Sanken and Allegro reserve the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Therefore, the user is cautioned to verify that the information in this publication is current before placing any order. When using the products described herein, the applicability and suitability of such products for the intended purpose shall be reviewed at the users responsibility. Although Sanken undertakes to enhance the quality and reliability of its products, the occurrence of failure and defect of semiconductor products at a certain rate is inevitable. Users of Sanken products are requested to take, at their own risk, preventative measures including safety design of the equipment or systems against any possible injury, death, fires or damages to society due to device failure or malfunction. Sanken products listed in this publication are designed and intended for use as components in general-purpose electronic equipment or apparatus (home appli- ances, office equipment, telecommunication equipment, measuring equipment, etc.). Their use in any application requiring radiation hardness assurance (e.g., aero- space equipment) is not supported. When considering the use of Sanken products in applications where higher reliability is required (transportation equipment and its control systems or equip- ment, fire- or burglar-alarm systems, various safety devices, etc.), contact a Sanken sales representative to discuss and obtain written confirmation of your specifica- tions. The use of Sanken products without the written consent of Sanken in applications where extremely high reliability is required (aerospace equipment, nuclear power- control stations, life-support systems, etc.) is strictly prohibited. The information included herein is believed to be accurate and reliable. Appli- cation and operation examples described in this publication are given for reference only and Sanken and Allegro assume no responsibility for any infringement of industrial property rights, intellectual property rights, or any other rights of Sanken or Allegro or any third party that may result from its use.

Worcester, Massachusetts 01615-0036 (508) 853-5000 SI-3018LSA LOW-VOLTAGE, HIGH-CURRENT IN ORDER OF 1) OUTPUT VOLTAGE AND 2) OUTPUT CURRENT Part VO Max IO Max DC In Max. Dropout Voltage Number Package 1.8 V 1.0 A 16 V 1.2 V @ 1.0 A SI-3018LSA 8-Lead SOIC 2.5 V 1.0 A 16 V 800 mV @ 1.0 A SI-3025LSA 8-Lead SOIC 3.3 V 1.0 A 16 V 800 mV @ 1.0 A SI-3033LSA 8-Lead SOIC 3.3 V 1.5 A 20 V 500 mV @ 1.0 A SI-3033C 5-Lead TO-220 5.0 V 1.0 A 25 V 500 mV @ 0.5 A SI-3050N TO-220

5.0 V *

1.5 A 35 V 1.0 V @ 1.5 A SLA3001M Power-Tab SIP 5.0 V 1.5 A 35 V 500 mV @ 1.0 A SI-3050C 5-Lead TO-220 5.0 V 1.5 A 35 V 500 mV @ 1.0 A SI-3051N TO-220 5.0 V 2.0 A 25 V 500 mV @ 1.0 A SI-3052V TO-3P 7.7 V 15 mA 30 V A8178LLT SOT-89 9.0 V 1.0 A 30 V 500 mV @ 0.5 A SI-3090N TO-220

9.0 V *

1.5 A 35 V 1.0 V @ 1.5 A SLA3001M Power-Tab SIP 9.0 V 1.5 A 35 V 500 mV @ 1.0 A SI-3090C 5-Lead TO-220 9.0 V 1.5 A 35 V 500 mV @ 1.0 A SI-3091N TO-220 12 V 1.0 A 30 V 500 mV @ 0.5 A SI-3120N TO-220

12 V *

1.5 A 35 V 1.0 V @ 1.5 A SLA3001M Power-Tab SIP 12 V 1.5 A 35 V 500 mV @ 1.0 A SI-3120C 5-Lead TO-220 12 V 1.5 A 35 V 500 mV @ 1.0 A SI-3121N TO-220 12 V 2.0 A 30 V 500 mV @ 1.0 A SI-3122V TO-3P 15 V 1.0 A 35 V 500 mV @ 0.5 A SI-3150N TO-220 15 V 1.5 A 35 V 500 mV @ 1.0 A SI-3150C 5-Lead TO-220 15 V 1.5 A 35 V 500 mV @ 1.0 A SI-3151N TO-220 15 V 2.0 A 30 V 500 mV @ 1.0 A SI-3152V TO-3P

15.7 V †

1.0 A 35 V 1.0 V @ 1.0 A SLA3002M Power-Tab SIP 24 V 1.5 A 45 V 500 mV @ 1.0 A SI-3240C 5-Lead TO-220 24 V 1.5 A 45 V 500 mV @ 1.0 A SI-3241N TO-220 * Three outputs, one each at 5 V, 9 V, and 12 V. † Also includes two switching regulator outputs for 5 V at 500 mA and 9 V at 400 mA. Also, see 83145 and 84145 Latched, Universal Input-Voltage Switches.