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Low Dropout Regulator General Description The EC1086 is a series of low dropout positive voltage regulators with a maximum dropout of 1.5V at 1.5A of load current. The EC1086 is available in 1.5V, 1.8V, 2.5V, 3V, 3.3V, and 5.0V versions. The fixed versions integrate the adjust resistors. It is also available in an adjustable version, which can set the output voltage with only two external resistors. The series features on-chip thermal shutdown. It also includes a bandgap reference and a current limiting circuit. The EC1086 series is available in standard packages of TO-263-3L, TO-220, SOT-223 and TO-252. EC1086 Features Available in 1.5V, 1.8V, 2.5V, 3V, 3.3V, 5.0V and adjustable versions Low dropout voltage: typical 1.3V at 1.5A Current limiting and thermal protection Low dropout voltage Output current: 1.5A Current limit: 2.3A Operating junction temperature range: 0 ~ 125oC Line regulation: 0.015% (typ.) Load regulation: 0.1% (typ.) Applications High efficiency linear regulators Battery charger Post regulation for switching supply Microprocessor supply Motherboard power supply Cable and ADSL modem DVD-Video player Telecom equipment Set top boxes and web boxes modules' supply TO-263-3L TO-220 SOT-223 TO-252 Figure 1. Package Types of EC1086 July 2003 Low Dropout Regulator Pin Configuration T Package (TO-220) EC1086 S Package (TO-263-3L) INPUT OUTPUT ADJ/GND 3 2 1 3 2 1 INPUT OUTPUT ADJ/GND D Package (TO-252) 3 INPUT H Package (SOT-223) 3 INPUT OUTPUT ADJ/GND 2 OUTPUT 2 1 1 ADJ/GND Top View Figure 2. Pin Configuration of EC1086 Functional Block Diagram INPUT Thermal Protection + OUTPUT GND (Fixed Output) ADJ (Adjustable Output) Figure 3. Functional Block Diagram of EC1086 July 2003 Low Dropout Regulator Ordering Information Package SOT-223 Temperature Range 0 C ~ 125 C o o EC1086 TO-220 0oC ~ 125oC TO-263-3L 0oC ~ 125oC TO-252 0oC ~ 125oC Part Number EC1086H-ADJ EC1086H-1.5 EC1086H-1.8 EC1086H-2.5 EC1086H-3.0 EC1086H-3.3 EC1086H-5.0 EC1086T-ADJ EC1086T-1.5 EC1086T-1.8 EC1086T-2.5 EC1086T-3.0 EC1086T-3.3 EC1086T-5.0 EC1086S-ADJ EC1086S-1.5 EC1086S-1.8 EC1086S-2.5 EC1086S-3.0 EC1086S-3.3 EC1086S-5.0 EC1086D-ADJ EC1086D-1.5 EC1086D-1.8 EC1086D-2.5 EC1086D-3.0 EC1086D-3.3 EC1086D-5.0 Marking ID H86A H86B H86E H86C H86G H86D H86F EC1086T-ADJ EC1086T-1.5 EC1086T-1.8 EC1086T-2.5 EC1086T-3.0 EC1086T-3.3 EC1086T-5.0 EC1086S-ADJ EC1086S-1.5 EC1086S-1.8 EC1086S-2.5 EC1086S-3.0 EC1086S-3.3 EC1086S-5.0 EC1086D-ADJ EC1086D-1.5 EC1086D-1.8 EC1086D-2.5 EC1086D-3.0 EC1086D-3.3 EC1086D-5.0 Packing Type Tape/Reel Tube Tube/ Tape/Reel Tube/ Tape/Reel July 2003 Low Dropout Regulator Absolute Maximum Ratings (Note 1) Parameter Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering, 10 sec.) ESD (Human Body Mode) Symbol TJ TS TLEAD ESD -65 Min Max 150 150 300 2000 EC1086 Unit o o o C C C V Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under"Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Recommended Operating Conditions Parameter Input Voltage Operating Junction Temperature Range Symbol VIN TJ 0 Min Max 15 125 Unit V o C July 2003 Low Dropout Regulator Electrical Characteristics EC1086 Typicals and limits appearing in normal type apply for TJ = 25oC. Limits appearing in Boldface type apply over the entire junction temperature range for operation, 0oC to 125oC. (PD maximum power dissipation , see Note 2.) Parameter Reference Voltage Symbol VREF Conditions EC1086-ADJ, IOUT = 10mA, VIN -VOUT = 2V, TJ = 25oC, 10mA IOUT 1.5A, 1.4V VIN - VOUT 6V EC1086-1.5, IOUT =10mA, VIN = 3.5V, TJ = 25oC, 10mA IOUT 1.5A, 3V VIN 10V EC1086-1.8, IOUT = 10mA, VIN = 3.8V, TJ = 25oC, 10mA IOUT 1. 5A, 3.2V VIN 10V EC1086-2.5, IOUT = 10mA, VIN = 4.5V, TJ = 25oC, 10mA IOUT 1.5A, 3.9V VIN 10V EC1086-3.0, IOUT = 10mA, VIN = 4.5V, TJ = 25oC, 10mA IOUT 1.5A, 4.9V VIN 10V EC1086-3.3, IOUT = 10mA, VIN = 5V, TJ = 25oC, 10mA IOUT 1.5A, 4.75V VIN 10V EC1086-5.0, IOUT = 10mA, VIN = 7V, TJ = 25oC, 10mA IOUT 1.5A, 6.5V VIN 10V Min 1.238 1.225 Typ 1.250 1.250 Max 1.262 1.270 Unit V Output Voltage VOUT 1.485 1.47 1.5 1.5 1.515 1.53 V 1.782 1.746 1.8 1.8 1.818 1.854 V 2.475 2.45 2.5 2.5 2.525 2.55 V 2.97 2.94 3.0 3.0 3.03 3.06 V 3.267 3.235 3.3 3.3 3.333 3.365 V 4.95 4.9 5 5 0.015 0.035 0.3 0.6 0.3 0.6 0.3 0.6 0.3 0.6 0.5 1 0.5 1 5.05 5.1 0.2 0.2 6 6 6 6 6 6 6 6 10 10 10 10 V Line Regulation VOUT EC1086-ADJ, IOUT = 10mA, 1.5V VIN 10V IOUT = 10mA, 1.5V VIN - VOUT 10V IOUT = 10mA, 1.5V VIN - VOUT 10V IOUT = 10mA, 1.5V VIN - VOUT 10V IOUT = 10mA, 1.5V VIN - VOUT 10V IOUT = 10mA, 1.5V VIN - VOUT 10V IOUT = 10mA, 1.5V VIN - VOUT 10V % mV mV mV mV mV mV EC1086-1.5, EC1086-1.8, EC1086-2.5, EC1086-3.0, EC1086-3.3, EC1086-5.0, July 2003 Low Dropout Regulator Electrical Characteristics (Continued) EC1086 Typicals and limits appearing in normal type apply for TJ = 25oC. Limits appearing in Boldface type apply over the entire junction temperature range for operation, 0oC to 125oC. (PD maximum power dissipation , see Note 2.) Parameter Load Regulation Symbol VOUT Conditions EC1086-ADJ, Min 10mA IOUT 1.5A, VIN - VOUT = 2V 10mA IOUT 1.5A, VIN - VOUT = 2V 10mA IOUT 1.5A, VIN - VOUT = 2V 10mA IOUT 1.5A, VIN - VOUT = 2V 10mA IOUT 1.5A, VIN - VOUT = 2V 10mA IOUT 1.5A, VIN - VOUT = 2V Typ 0.1 0.2 3 6 3 6 3 6 3 7 5 10 1.3 Max 0.3 0.4 12 20 12 20 12 20 15 20 20 35 1.5 Unit % mV mV mV mV mV V A EC1086-1.5, EC1086-1.8, EC1086-2.5, EC1086-3.3, EC1086-5.0, Dropout Voltage Current Limit Minimum Load Current Quiescent Current Ripple Rejection Adjust Pin Current Adjust Pin Current Change Temperature Stability RMS Noise (% of VOUT) Thermal Shutdown Thermal Shutdown Hysteresis Thermal Resistance Junction-to-Case QJC SOT - 223 TO - 263 TO - 220 ILIMIT IO = 1.5A, VREF = 1% VIN - VOUT = 2V, 1.4V VIN - VOUT 10V (For ADJ) VIN = VOUT + 1.3V fRIPPLE = 120Hz, COUT = 25F Tantalum, IOUT = 1.5A, VIN - VOUT = 3V 60 1.5 2.3 2 5 75 60 120 5 5 10 mA mA dB A A % % oC o 10mA IOUT 1.5A, 1.4V VIN -VOUT 10V 0.2 0.5 TA = 25oC, 10Hz f 10kHz Junction Temperature 0.003 165 30 20 4 4 C oC/W Note 2: Maximum power dissipation see Figure 5 July 2003 Low Dropout Regulator Typical Performance Characteristics EC1086 3.40 10.0 3.35 Output Voltage (V) 7.5 3.30 Power (W) 3.25 5.0 SOT223 3.20 2.5 3.15 3.10 0 25 50 75 o 100 125 0.0 25 50 75 100 o 125 Ambient Temperature ( C) Case Temperature ( C) Figure 4. Output Voltage vs. Temperature Figure 5. Maximum Power Dissipation 1.260 1.255 1.3 1.2 Reference Voltage (V) 1.250 1.245 1.240 1.235 1.230 1.225 1.220 Dropout Voltage (V) 1.1 1.0 0.9 0.8 0.7 0.6 TA=0 C o TA=25 C o 0 25 50 75 o 100 125 0.5 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 Ambient Temperature ( C) Output Current (A) Figure 6. Reference voltage vs. Temperature Figure 7. Dropout Voltage vs. Output Current July 2003 Low Dropout Regulator Typical Performance Characteristics (Continued) EC1086 2.25 100 90 Short Circuit Current (A) 2.00 Adjust Pin Current (uA) 80 70 60 50 40 30 20 10 1.75 1.50 1.25 1.00 0 0 25 50 75 o 100 125 0 25 50 75 o 100 125 Ambient Temperature ( C) Ambient Temperature ( C) Figure 8. Short Circuit Current vs. Temperature Figure 9. Adjust Pin Current vs. Temperature 5 80 Minimum Load Current (mA) Ripple Rejection (dB) 0 25 50 75 o 4 70 60 3 50 2 40 1 30 0 100 125 20 10 100 1k 10k 100k Ambient Temperature ( C) Frequency (Hz) Figure 10. Minimum Load Current vs. Temperature Figure 11. Ripple Rejection vs. Frequency July 2003 Low Dropout Regulator Typical Performance Characteristics (Continued) EC1086 Figure 12. Load Transient Response Figure 13. Line Transient Response July 2003 Low Dropout Regulator Typical Applications EC1086 EC1086-AD J VIN 10F Tantalum + VIN ADJ VOUT + R1 120 VOUT 22F Tantalum VOUT=VREF(1+R2/R1) + IADJ . R2 R2 VIN 10F Tantalum + VIN EC1086-5.0 VOUT GND + VOUT 22F Tantalum Figure 14. Typical Applications of EC1086 July 2003 Low Dropout Regulator Mechanical Dimensions TO-263-3L EC1086 Unit: mm 3 4.57+0.25 -0.50 10.16+0.13 -0.51 70 7.42 1.270.12 8.84 1.27+0.12 7 8.7+0.95 -0.06 0.060.04 15.250.49 2.670.03 0.380.02 2.540.15 5.6 7.98 1.270.12 0.81+0.18 -0.30 2.54 2.54 0.38 5 3 2.20 3 7 2.54 2.54 33 July 2003 Low Dropout Regulator Mechanical Dimensions (Continued) EC1086 TO-220 10.160.50 3.810.25 2.980.40 Unit: mm 0.950.40 0.20 15.371.14 1.85 CJ 9.020.50 1.50x0.20 29.081.20 4.190.63 2.480.40 3 1.460.30 0.381 60 60 0.381 2.54 2.54 8.763 0.813 0.3810.025 July 2003 7 7 Low Dropout RegulatorEC1086 Mechanical Dimensions (Continued) SOT-223 Unit: mm 3.500.20 7.000.30 0.25 2.300.10 0.900.15 4.001.00 0.300.05 R0.150.05 R0.150.05 2 12 2 12 0.710.10 6.500.20 3 6 0.40 2 11 July 2003 1.600.10 2 12 0.050.04 Low Dropout Regulator Mechanical Dimensions (Continued) TO-252 6.530.15 5.330.10 0.520.06 EC1086 Unit: mm 2.280.10 0.4x45 8 1.200.12 0.800.15 9.800.30 0.510.03 0.070.05 5 0.80.05 0.710.07 1.580.18 0.6 5 2.290.05 4 3 0.51 2.800.20 2.290.05 3 0. 10 30.10 July 2003 5.460.10 |
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