SLR1085

SLR1085 SMC | Alldatasheet

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Technical content

Technical Data 3A Low Dropout Positive Regulator Data Sheet N1585, Rev. -

• China - Germany - Korea - Singapore - United States •
• http://www.smc-diodes.com - sales@ smc-diodes.com • SLR1085 Description: The SLR1085 is a low dropout three terminal regulator with 3A output current capability. The output voltage is adjustable with the use of a resistor divider or fixed 1.8V, 2.5V and 3.3V. Dropout voltage is guaranteed to be at maximum of 1.4V with the maximum output current. Its low dropout voltage and fast transient response make it ideal for low voltage microprocessor applications. Current limit and thermal protection provide protection against any overload condition that would create excessive junction temperatures. Features:
• Dropout Voltage 1.3V at 3A Output Current.
• Fast Transient Response.
• Extremely Tight Line and Load Regulation.
• Current Limiting and Thermal Protection.
• Adjustable Output Voltage or Fixed 1.8V, 2.5Vand 3.3V.
• Standard 3-Pin Power Packages. Applications:
• Mother Board I/O Power Supplies.
• Microprocessor Power Supplies.
• High Current Regulator.
• Post Regulator for Switching Supply. Typical application circuit: Adjustable Voltage Regulator Fixed Voltage Regulator

Technical Data 3A Low Dropout Positive Regulator Data Sheet N1585, Rev. -

• China - Germany - Korea - Singapore - United States •
• http://www.smc-diodes.com - sales@ smc-diodes.com • SLR1085 Ordering Information: SLR1085-XXXXX Example: SLR1085-18TTR 1.8V version in TO-252 Package &Taping & Reel Packing Type Example: SLR1085-18RTR 1.8V version in TO-263 Lead Free Package & Taping & Reel Packing Type Absolute Maximum Ratings: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Test Circuit Refer to TYPICAL APPLICATION CIRCUIT. PIN CONFIGURATION TO-252 TOP VIEW 1: ADJ (GND) 2: VOUT (TAB) 3: VIN TO-263 TOP VIEW 1: ADJ (GND) 2: VOUT (TAB) 3: VIN TO-220 FRONT VIEW 1: ADJ (GND) 2: VOUT (TAB) 3: VIN PACKING TYPE TB: TUBE TR: TAPING & REEL PACKAGING TYPE T: TO-252 R: TO-263 V: TO-220 OUTPUT VOLTAGE DEFAULT: ADJUSTABLE 18: 1.8V 25: 2.5V 33: 3.3V

Technical Data 3A Low Dropout Positive Regulator Data Sheet N1585, Rev. -

• China - Germany - Korea - Singapore - United States •
• http://www.smc-diodes.com - sales@ smc-diodes.com • SLR1085

Electrical Characteristics

=5V, T J =25°C, I O =10mA, unless otherwise specified) (Note2) Note 1: To avoid output oscillation, aluminum electrolytic output capacitor is recommended and ceramic capacitor is not suggested. Note 2: Specifications are production tested at T A =25°C. Specifications over the -40°C to 85°C operating temperature range are assured by design, characterization and correlation with Statistical Quality Controls (SQC). Note 3: Guarantee by design.

Technical Data 3A Low Dropout Positive Regulator Data Sheet N1585, Rev. -

• China - Germany - Korea - Singapore - United States •
• http://www.smc-diodes.com - sales@ smc-diodes.com • SLR1085 Typical Performance Characteristics

Technical Data 3A Low Dropout Positive Regulator Data Sheet N1585, Rev. -

• China - Germany - Korea - Singapore - United States •
• http://www.smc-diodes.com - sales@ smc-diodes.com • SLR1085 Block Diagram Pin Descriptions ADJ PIN - Providing V REF =1.25V (typ.) for adjustable V OUT . V REF OUT ADJ and I ADJ =55μA (typ.) (GND PIN- Power ground.) VOUT PIN - Adjustable output voltage. VIN PIN - Power Input.

Technical Data 3A Low Dropout Positive Regulator Data Sheet N1585, Rev. -

• China - Germany - Korea - Singapore - United States •
• http://www.smc-diodes.com - sales@ smc-diodes.com • SLR1085

Application Information

Linear regulators require input and output capacitors to main tain stability. Input capacitor at 10 μF with a 10μF aluminum electrolytic output capacitor is recommended. POWER DISSIPATION The SLR1085 obta ins thermal-limiting circuitry, which is design ed to protect the device against overload condition. For continuous load condition, maximum rating of junction temperature must not be exceeded. It is important to pay more attention in thermal resistance. It includes junction to case, junction to ambient. The maximum power dissipation of SLR1085 depends on the thermal resistance of its case and circuit board, the temperature difference between the die junction and ambient air, and the rate of airflow. The rate of temperature rise is greatly affected by the mounting pad configuration on the PCB, the board material, and the ambient temperature. When the IC mounting with good thermal conductivity is used, the junction temperature will be low even when large power dissipation applies. The power dissipation across the device is P = I OUT IN OUT The maximum power dissipation is: (TJ-max - TA) PMAX = RΘJA Where T J-max is the maximum allowable junction temperature (125°C), and T A is the ambient temperature suitable in application. As a general rule, the lowe r temperature is, the better reliability of the device is. So the PCB m ounting pad should provide maximum thermal conductivity to maintain low device temperature. Application Examples

Technical Data 3A Low Dropout Positive Regulator Data Sheet N1585, Rev. -

• China - Germany - Korea - Singapore - United States •
• http://www.smc-diodes.com - sales@ smc-diodes.com • SLR1085 Physical Dimensions TO-220 (unit: mm) Note: 1. Refer to JEDEC TO-220AB. 2. Dimension "E" does not include mold flash, protrusions or gate burrs. Mold flash, protrusion or gate burrs shall not exceed 6 mil per side. 3. Dimension "D1" does not include inter-lead flash or protrusions. 4. Controlling dimension is millimeter, converted inch dimensions are not necessarily exact.

Technical Data 3A Low Dropout Positive Regulator Data Sheet N1585, Rev. -

• China - Germany - Korea - Singapore - United States •
• http://www.smc-diodes.com - sales@ smc-diodes.com • SLR1085 TO-252 (unit: mm) Note: 1. Refer to JEDEC TO-252AA and AB. 2. Dimension "E" does not include mold flash, protrusions or gate burrs. Mold flash, protrusion or gate burrs shall not exceed 6 mil per side . 3. Dimension "D" does not include inter-lead flash or protrusions. 4. Controlling dimension is millimeter, converted inch dimensions are not necessarily exact.

Technical Data 3A Low Dropout Positive Regulator Data Sheet N1585, Rev. -

• China - Germany - Korea - Singapore - United States •
• http://www.smc-diodes.com - sales@ smc-diodes.com • SLR1085 TO-263 (unit: mm) Note: 1. Refer to JEDEC TO-263AB. 2. Dimension "E" does not include mold flash, protrusions or gate burrs. Mold flash, protrusion or gate burrs shall not exceed 6 mil per side. 3. Dimension "D" does not include inter-lead flash or protrusions. 4. Controlling dimension is millimeter, converted inch dimensionsare not necessarily exact.

Technical Data 3A Low Dropout Positive Regulator Data Sheet N1585, Rev. -

• China - Germany - Korea - Singapore - United States •
• http://www.smc-diodes.com - sales@ smc-diodes.com • SLR1085 DISCLAIMER: 1- The information given herein, including the specifications and dimensions, is subject to change without prior notice to improve product characteristics. Before ordering, purchasers are advised to contact the SMC - Sangdest Microelectronics (Nanjing) Co., Ltd sales department for the latest version of the datasheet(s). 2- In cases where extremely high reliability is required (such as use in nuclear power control, aerospace and aviation, traffic equipment, medical equipment , and safety equipment) , safety should be ensured by using semiconductor devices that feature assured safety or by means of users’ fail-safe precautions or other arrangement . 3- In no event shall SMC - Sangdest Microelectronics (Nanjing) Co., Ltd be liable for any damages that may result from an accident or any other cause during operation of the user’s units according to the datasheet(s). SMC - Sangdest Microelectronics (Nanjing) Co., Ltd assumes no responsibility for any intellectual property claims or any other problems that may result from applications of information, products or circuits described in the datasheets. 4- In no event shall SMC - Sangdest Microelectronics (Nanjing) Co., Ltd be liable for any failure in a semiconductor device or any secondary damage resulting from use at a value exceeding the absolute maximum rating. 5- No license is granted by the datasheet(s) under any patents or other rights of any third party or SMC - Sangdest Microelectronics (Nanjing) Co., Ltd. 6- The datasheet(s) may not be reproduced or duplicated, in any form, in whole or part, without the expressed written permission of SMC - Sangdest Microelectronics (Nanjing) Co., Ltd. 7- The products (technologies) described in the datasheet(s) are not to be provided to any party whose purpose in their application will hinder maintenance of international peace and safety nor are they to be applied to that purpose by their direct purchasers or any third party. When exporting these products (technologies), the necessary procedures are to be taken in accordance with related laws and regulations..