SI-3010LLSL-TL

Re Lin gu ea lat r ors SI-3010LLSL 1.5 A, Ultra-Low-Dropout, 1~3.3 V Regulator Designed to meet the high-current requirements in industrial and consumer applications; embedded core, memory, or logic supplies; TVs, VCRs, and office equipment, the SI-3010LLSL voltage regulator offers the reduced dropout voltage and low quiescent current essential for improved efficiency. This device delivers a regulated output at up to 1.5 A. Integrated thermal and overcurrent protection enhance overall system reliability. An npn pass element provides a dropout voltage of less than 300 mV at 1 A of load current. Regulator accuracy and excellent temperature characteristics are provided by a bandgap reference. Low output voltages eliminate the need for expensive PWM buck converters. The low dropout voltage permits more efficient regulation before output regulation is lost. Quiescent current does not increase significantly as the dropout voltage is approached, an ideal feature in standby/resume power systems where data integrity is crucial. An LS-TTL/CMOScompatible input gives the designer complete control over power up, standby, or power down. This devices is supplied in a fully molded 8-lead miniature surfacemount package (tape and reel) with enhanced power-dissipating qualities. It is rated for continuous operation between -30°C and +100°C. FEATURES ■ 1.5 A Output Current ■ Adjustable 1 ~ 3.3 V Output Voltage ■ 0.3 V Maximum Dropout Voltage at IO = 1 A ■ Fast Transient Response ■ 1 μA Maximum Standby Current ■ Remote Voltage Sensing ■ Foldback Current Limiting ■ Superior Heat Dissipation ■ Thermal Protection APPLICATIONS ■ TVs, VCRs, Electronic Games ■ Embedded Core, Memory, or Logic Supplies ■ Printers and Other Office Equipment ■ Industrial Machinery ■ Secondary-Side Stabilization of Multi-Output SMPS Always order by complete part number, e.g., SI-3010LLSL-TL , where “-TL” indicates tape and reel.. Data Sheet 27468.44b OUT ADJ BIAS ENABLE 1 8 IN IN GND GND 2 7 VR 3 VS 6 4 5 Dwg. PK-012-1 ABSOLUTE MAXIMUM RATINGS Input Voltage, VI . . . . . . . . . . . . . . 10 V Output Current, IO . . . . . . . . . . . . 1.5 A* Bias Voltage, VS . . . . . . . . . . . . . . 10 V Enable Input Voltage, VE . . . . . . . . . . VI Junction Temperature, TJ . . . . . +125°C Storage Temperature Range, TS . . . . . . . . . . . . . -30°C to +125°C * Output current rating is limited by input voltage, duty cycle, and ambient temperature. Under any set of conditions, do not exceed a junction temperature of +125°C. Sanken Power Devices from Allegro MicroSystems SI-3010LLSL 1.5 A, Ultra-Low-Dropout, 1~3.3 V Regulator r ea tors n Li ula g Re FUNCTIONAL BLOCK DIAGRAM Allowable Package Power Dissipation Recommended Operating Conditions DC Input Voltage Adjustable Output Volt. Range DC Output Current DC Bias Voltage Operating Junction Temp. Min 1.4 1.1 0 3.3 -20 Max 3.6 3.3 1.5 5.5 +100 Units V V A V °C For the availability of parts meeting -40°C requirements, contact Allegro’s Sales Representative. Leads 7 and 8 are soldered to the PCB copper area and provide heat sinking of the pass transistor. This data sheet is based on Sanken data sheet SSJ-02412. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 Copyright © 2004, 2005 Allegro MicroSystems, Inc. 2 Re Lin gu ea lat r ors SI-3010LLSL 1.5 A, Ultra-Low-Dropout, 1~3.3 V Regulator otherwise noted). ELECTRICAL CHARACTERISTICS at TA = +25°C, VI = 1.8 V, VO = 1.5 V adjusted, VS = 3.3 V, VE = 2 V (unless Limits Characteristic Output Volt. Temp. Coeff. Internal Reference Voltage Output Short-Circuit Current Line Regulation Load Regulation Dropout Voltage Ground Terminal Current Enable Input Voltage Enable Input Current Ripple Rejection Ratio Thermal Shutdown Symbol Test Conditions 0°C ≤ TJ ≤ 100°C IO = 10 mA see note VI = 1.7 ~ 2.5 V, IO = 10 mA VI = 1.8 V, IO = 0 A ~ 1.0 A IO = 1.0 A IO = 0 mA, VE = 2.0 V VE = 0 V VEH VEL IEH IEL PSRR TJ Output ON Output OFF VE = 2.7 V VE = 0 V 100 Hz ≤ f ≤ 120 Hz Min. — 0.980 1.6 — — — — — 2.0 — — — — 135 Typ. ±0.2 — — — — 500 — — — — — 60 152 Max. — — 10 30 0.3 800 1.0 — 0.8 50 10 — — Units mV/°C V A mV mV V μA μA V V μA μA dB °C aVO Vref IOM ΔVO(ΔVI) ΔVO(ΔIO) VImin - VO IGND 1.000 1.020 Typical values are given for circuit design information only. Note: Output short-circuit current is at point where output voltage has decreased 5% below VO(nom). www.allegromicro.com 3 SI-3010LLSL 1.5 A, Ultra-Low-Dropout, 1~3.3 V Regulator r ea tors n Li ula g Re (VO = 1.5 V adjusted, VI = 1.8 V, VS = 3.3 V, TA = 25°C) Dropout Voltage Low-Voltage Behavior Overcurrent Protection TYPICAL CHARACTERISTICS Input Line Regulation Bias Line Regulation Load Regulation ENABLE Control Voltage 4 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 r ea tors n Li ula eg R Input Capacitor (CI, 0.1 µF to 10 µF). This is necessary either when the input line includes inductance or when the wiring is long. Output Capacitor (CO, ≥ 47 µF). This device is designed for use with a very low ESR output capacitor such as a ceramic capacitor. Output oscillation may occur with an ESR greater than 500 mΩ. Output Voltage Adjustable Resistors (R1 and R2). The output voltage can be adjusted by R1 and R2. 10 kΩ or 11 kΩ for R2 is recommended. R1 = (VO – Vref)/(Vref/R2) Soft-Start Capacitor (CSS). This capacitor between VO and ADJ will set up starting time. ENABLE Input. The ENABLE (control) input features an internal pull-down resistor. Leaving this input open causes the output to turn off. Determination of DC Input Voltage. The minimum input voltage VI(min) should be higher than the sum of the fixed output voltage and the maximum rated dropout voltage. Overcurrent Protection. The SI-3000LLSL series has a built-in fold-back type overcurrent protection circuit, which limits the output current at a start-up mode. It thus cannot be used in applications that require current at the start-up mode such as: (1) constant-current load, (2) power supply with positive and negative outputs to common load (a center-tap type power supply), or (3) raising the output voltage by putting a diode or a resistor between the device ground and system ground. Thermal Protection. Circuitry turns off the pass transistor when the junction temperature rises above 135°C. It is intended only to protect the device from failures due to excessive junction temperatures and should not imply that output short circuits or continuous overloads are permitted. SI-3010LLSL 1.5 A, Ultra-Low-Dropout, 1~3.3 V Regulator APPLICATIONS INFORMATION Heat Radiation and Reliability. The reliability of the device is directly related to the junction temperature (TJ) in its operation. Accordingly, careful consideration should be given to heat dissipation. The inner frame on which the pass transistor is mounted is connected to terminals 7 and 8. Therefore, it is very effective for heat radiation to enlarge the copper area that is connected to these terminals. The graph illustrates the effect of the copper area on the junction-to-ambient thermal resistance (RθJA). The junction temperature (TJ) can be determined from either of the following equations: TJ = (PD × RθJA) + TA or TJ = (PD × RθJL) + TL where PD = IO × (VI – VO), TL is the temperature of lead 8, and RθJL = 36°C/W. Parallel Operation. Parallel operation to increase load current is not permitted. www.allegromicro.com 5 SI-3010LLSL 1.5 A, Ultra-Low-Dropout, 1~3.3 V Regulator r ea tors n Li ula g Re Recommended Timing. APPLICATIONS INFORMATION (cont.) Typical Application. VI VS VE VO IO TJ 6 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 r ea tors n Li ula eg R Dimensions in Millimeters SI-3010LLSL 1.5 A, Ultra-Low-Dropout, 1~3.3 V Regulator 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. 4. Terminal finish: pure Sn, 2nd level interconnect category (e3) www.allegromicro.com 7 SI-3010LLSL 1.5 A, Ultra-Low-Dropout, 1~3.3 V Regulator r ea tors n Li ula g Re Tape and Reel Dimensions in Millimeters Tape Specifications 1. Material: conductive polystyrene. 2. Allowable camber: 1 mm/100 mm maximum. 3. Surface resistance: 100 kΩ, maximum (distance of ten pockets). 4. 1000 pieces per reel. 8 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 r ea tors n Li ula eg R SI-3010LLSL 1.5 A, Ultra-Low-Dropout, 1~3.3 V Regulator 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 appliances, office equipment, telecommunication equipment, measuring equipment, etc.). Their use in any application requiring radiation hardness assurance (e.g., aerospace 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 equipment, fire- or burglar-alarm systems, various safety devices, etc.), contact a company sales representative to discuss and obtain written confirmation of your specifications. 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. Application 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. www.allegromicro.com EI16EI 9