SA1084 5A LDO VOLTAGE REGULATOR DESCRIPTION The SA1084 is a positive low voltage dropout regulator, and the voltage dropout is 1.5V at 5A. SA1084 provides two versions: fixed and adjustable versions. VOUT of fixed version has a tolerance of less than 1% for five kinds of output voltages 1.5V, 1.8V, 2.5V, 3.3V, and 5.0V. The SA1084 offers some key features include thermal shutdown and current limiting .The SA1084 is an excellent choice for use in various electronic equipments. FEATURES * 1% accuary in fixed version 1.5V, 1.8V, 2.5V, 3.3V, 5.0V and APPLICATIONS adjustable version * Low Dropout Voltage: 1.5V at 5A output current * High Efficiency Linear Regulators * Current Limiting: 6.5A * Post Regulators for Switching Supplies * Thermal Shutdown * Battery Charger * Line Regulation(Adj Version: Typical): 0.015% * Microprocessor Supply * Load Regulation ( Adj Version: Typical): 0.1% * Desktop PCs, RISC and Embedded * Temperature Range: 0 to 125°C Processors Supply ORDERING INFORMATION (Temperature range: 0~125°C) Material Package Type SA1084D-ADJ Part No. SA1084D-ADJ Pb free Tube SA1084D-ADJTR SA1084D-ADJ Pb free Tape & Reel SA1084D-1.5 Pb free Tube SA1084D-1.5 SA1084D-1.5TR Package TO-252-2L Marking SA1084D-1.5 Pb free Tape & Reel SA1084D-1.8 SA1084D-1.8 Pb free Tube SA1084D-1.8TR SA1084D-1.8 Pb free Tape & Reel HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2009.09.08 Page 1 of 10 SA1084 Part No. Package Marking Material Package Type SA1084D-2.5 SA1084D-2.5 Pb free Tube SA1084D-2.5TR SA1084D-2.5 Pb free Tape & Reel SA1084D-3.3 Pb free Tube SA1084D-3.3 Pb free Tape & Reel SA1084D-5.0 SA1084D-5.0 Pb free Tube SA1084D-5.0TR SA1084D-5.0 Pb free Tape & Reel SA1084S-ADJ SA1084S-ADJ Pb free Tube SA1084S-ADJTR SA1084S-ADJ Pb free Tape & Reel SA1084D-3.3 SA1084D-3.3TR TO-252-2L SA1084S-1.5 SA1084S-1.5 Pb free Tube SA1084S-1.5TR SA1084S-1.5 Pb free Tape & Reel SA1084S-1.8 SA1084S-1.8 Pb free Tube SA1084S-1.8 Pb free Tape & Reel SA1084S-1.8TR SA1084S-2.5 TO-263-3L SA1084S-2.5 Pb free Tube SA1084S-2.5TR SA1084S-2.5 Pb free Tape & Reel SA1084S-3.3 SA1084S-3.3 Pb free Tube SA1084S-3.3TR SA1084S-3.3 Pb free Tape & Reel SA1084S-5.0 SA1084S-5.0 Pb free Tube SA1084S-5.0TR SA1084S-5.0 Pb free SA1084T-ADJ SA1084T-ADJ Pb free Tape & Reel Tube SA1084T-1.5 SA1084T-1.5 Pb free Tube SA1084T-1.8 Pb free Tube SA1084T-2.5 Pb free Tube SA1084T-3.3 SA1084T-3.3 Pb free Tube SA1084T-5.0 SA1084T-5.0 Pb free Tube SA1084S2-ADJ SA1084S2-ADJ Pb free Tube SA1084S2-ADJTR SA1084S2-ADJ Pb free Tape & Reel SA1084S2-1.5 SA1084S2-1.5 Pb free Tube SA1084S2-1.5TR SA1084S2-1.5 Pb free Tape & Reel SA1084S2-1.8 SA1084S2-1.8 Pb free Tube SA1084S2-1.8 Pb free Tape & Reel SA1084S2-2.5 Pb free Tube SA1084S2-2.5TR SA1084S2-2.5 Pb free Tape & Reel SA1084S2-3.3 SA1084S2-3.3 Pb free Tube SA1084S2-3.3TR SA1084S2-3.3 Pb free Tape & Reel SA1084S2-5.0 SA1084S2-5.0 Pb free Tube SA1084S2-5.0TR SA1084S2-5.0 Pb free Tape & Reel SA1084T-1.8 SA1084T-2.5 SA1084S2-1.8TR SA1084S2-2.5 TO-220-3L TO-263-2L HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2009.09.08 Page 2 of 10 SA1084 BLOCK DIAGRAM ABOSOLUTE MAXIMUM RATINGS Characteristics Symbol Ratings Unit VIN 20 V TLEAD 260 °C Operating Junction Temperature Range TJ 150 °C Storage Temperature Range TS -65 ~ +150 V Power Disspation PD Internally Limited (note1) mW ESD 2000 V Input Supply Voltage Lead Temperature (Soldering, 5 seconds) ESD Tolerance (Minimum) Note1: The maximum allowable power dissipation is a function of maximum operating junction temperature, TJ (max), the junction to ambient thermal resistance, θJA, and the ambient temperature Tamb. The maximum allowable power dissipation at any ambient temperature is given: PD (max) = (TJ (max) – Tamb)/θJA, exceeding the maximum allowable power limit will result in excessive die temperature; thus, the regulator will go into thermal shutdown. The junction to ambient thermal resistance, θJA of some packages may be different; the value of θJA depends on mounting technique. RECOMMENDED OPERATING CONDITIONS Characteristics Symbol Ratings Unit Input voltage VIN 12 V Operating Junction Temperature Range TJ 0 ~ +125 °C HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2009.09.08 Page 3 of 10 SA1084 ELECTRICAL CHARACTERISTICS (Tamb=25°C, unless otherwise specified. Limits appearing in Boldface type apply over the entire junction temperature range for operation, 0°C to 125°C. ) Characteristics Symbol Reference Voltage VREF Conditions Min. Typ. Max. Unit IOUT=10mA, VIN-VOUT=3V, 1.238 1.250 1.262 V 10mA≤IOUT≤5A, 1.5V≤VIN-VOUT≤5V 1.225 1.250 1.270 IOUT=10mA, VIN=4.5V, 1.485 1.5 1.515 10mA≤IOUT≤5A, 3.0V≤VIN≤6V 1.47 1.5 1.53 IOUT=10mA, VIN=4.8V, 1.782 1.8 1.818 10mA≤IOUT≤ 5A, 3.3V≤VIN≤6V 1.764 1.8 1.836 IOUT=10mA, VIN=5.5V 2.475 2.5 2.525 10mA≤IOUT≤5A, 4.0V≤VIN ≤7V 2.45 2.5 2.55 IOUT=10mA, VIN=6.3V, 3.267 3.3 3.333 10mA≤IOUT≤5A, 4.8V≤VIN≤8V 3.234 3.3 3.366 IOUT=10mA, VIN=8V, 4.95 5 5.05 10mA≤ IOUT≤5A, 6.5V≤VIN≤10V 4.9 5 5.1 SA1084-ADJ, 0.015 0.2 IOUT=10mA, 2.85V≤VIN≤10V 0.035 0.2 0.5 6 1 6 0.5 6 1 6 0.5 6 1 6 0.5 6 1 6 0.5 10 1 10 SA1084-ADJ, 0mA≤IOUT≤5A, 0.1 0.3 VIN-VOUT=3V 0.2 0.4 SA1084-1.5, 0mA≤IOUT≤5A, 3 15 VIN-VOUT=3V 7 20 SA1084-1.8, 0mA≤ IOUT≤5A, 3 15 VIN-VOUT=3V 7 20 SA1084-2.5, 0mA≤IOUT≤5A, 3 15 VIN-VOUT=3V 7 20 SA1084-ADJ, SA1084-1.5, V SA1084-1.8, V SA1084-2.5, Output Voltage VOUT V SA1084-3.3, V SA1084-5.0, SA1084-1.5, IOUT=10mA, 3.0V≤VIN≤10V SA1084-1.8, Line Regulation ΔVOUT IOUT=10mA, 3.3V≤VIN≤10V SA1084-2.5, IOUT=10mA, 4.0V≤VIN≤10V SA1084-3.3, IOUT=10mA, 4.8V≤VIN≤10V SA1084-5.0, IOUT=10mA, 6.5V≤VIN≤10V Load Regulation ΔVOUT HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 V % mV mV mV mV mV % mV mV mV 2009.09.08 Page 4 of 10 SA1084 Characteristics Load Regulation Dropout Voltage Current Limit Minimum Symbol ΔVOUT VDROP ILIMIT Load ILOAD Current (MIN) Quiescent Current Ripple Rejection IQ PSRR Adjust Pin Current Adjust Pin Current Change IADJ ΔIADJ Temperature Stability Long Term Stability RMS Noise (% of Resistance Typ. Max. SA1084-3.3, 0mA≤IOUT≤5A, 3 15 VIN-VOUT=3V 7 20 SA1084-5.0, 0mA≤IOUT≤5A, 5 20 VIN-VOUT=3V 10 35 θJA Min. 1.45 1.5 IOUT=5A, ΔVREF, ΔVOUT=1% VIN-VOUT=3V 5.5 6.5 Unit mV mV V A VIN=10V (SA1084-ADJ) 3 10 mA VIN=10V (SA1084) 5 10 mA fRIPPLE=120Hz, COUT=25μF Tantalum, IOUT=5A, VIN-VOUT=3V 60 72 VIN=4.25V, IOUT=10mA 10mA≤IOUT≤5A, 1.5V≤(VIN-VOUT)≤4.5V dB 55 120 μA 0.2 5 μA IOUT=10mA, VIN-VOUT=1.5V 0.5 % Tamb=125°C, 1000Hrs 0.5 % 0.003 % 10Hz≤f≤10kHz VOUT) Thermal Conditions TO-263-3L 60 TO-263-2L 60 TO-220-3L 60 TO-252-2L 100 °C/W PIN CONFIGURATION HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2009.09.08 Page 5 of 10 SA1084 PIN DESCRIPTION Pin No. Pin name I/O Functions 1 GND/ADJ G/O 2 VOUT O Output voltage 3 VIN I Input supply voltage Ground/ADJ FUNCTION DESCRIPTION The SA1084 is a LDO regulator, it’s pass transistor is made up of a single NPN transistor being driven by a PNP. The dropout voltage is defined as: VDROP = VBE+ VSAT. The SA1084 series of fixed and adjustable regulators are easy to use. Output voltages are 1.5V, 1.8V, 2.5V, 3.3V, and 5.0V.On-chip thermal shut down provides protection against any combination of overload and ambient temperature that would create excessive junction temperature. The SA1084 requires an output capacitor for device stability. Its value of 22μF tantalum covers all cases of bypassing the adjustment terminal. Without bypassing the adjustment terminal smaller capacitors can be used with equally good results .depends upon the application circuit. In general, linear regulator stability decreases with higher output currents. TYPICAL APPLICATION CIRCUIT Figure 1. Typical Fixed Output Voltage Figure 2. Typical Adjustable Output Voltage Note: The circuit and parameters are reference only, please set the parameters of the real application circuit based on the real test. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2009.09.08 Page 6 of 10 SA1084 TYPICAL CHARACTERISTICS CURVES HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2009.09.08 Page 7 of 10 SA1084 PACKAGE OUTLINE UNIT: mm 3.80 REF 5.6±0.3 1.6±0.2 2.5～3.0 0.6～0.9 9.70±0.30 1.50±0.15 TO-252-2L UNIT: mm HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn 5.30REF 6.1±0.2 10.10±0.30 1.4～1.7 0.80±0.20 1.80 REF 0.9～1.25 TO-252-2L REV:1.0 2009.09.08 Page 8 of 10 SA1084 PACKAGE OUTLINE UNIT: mm TO-263-2L UNIT: mm HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn 2.54±0.20 1.5±0.20 5.28±0.20 15.25±0.25 8.70±0.20 TO-220-3L REV:1.0 2009.09.08 Page 9 of 10 SA1084 PACKAGE OUTLINE TO-263-3L UNIT: mm Disclaimer: • Silan reserves the right to make changes to the information herein for the improvement of the design and performance without further notice! • All semiconductor products malfunction or fail with some probability under special conditions. When using Silan products in system design or complete machine manufacturing, it is the responsibility of the buyer to comply with the safety standards strictly and take essential measures to avoid situations in which a malfunction or failure of such Silan products could cause loss of body injury or damage to property. • Silan will supply the best possible product for customers! HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2009.09.08 Page 10 of 10