Low Dropout Regulator EC1086 General Description Features 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. TO-263-3L TO-220 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 SOT-223 Figure 1. Package Types of EC1086 July 2003 TO-252 Low Dropout Regulator EC1086 Pin Configuration T Package S Package (TO-263-3L) (TO-220) 3 INPUT OUTPUT 2 OUTPUT ADJ/GND 1 ADJ/GND 3 INPUT 2 1 D Package (TO-252) 3 H Package (SOT-223) INPUT 2 OUTPUT 1 ADJ/GND 3 INPUT 2 OUTPUT 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 EC1086 Ordering Information Package SOT-223 Temperature Range TO-220 0oC ~ 125oC TO-263-3L 0oC ~ 125oC TO-252 0oC ~ 125oC July 2003 o o 0 C ~ 125 C 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 Low Dropout Regulator EC1086 Absolute Maximum Ratings (Note 1) Parameter Symbol Operating Junction Temperature Range TJ Storage Temperature Range TS Lead Temperature (Soldering, 10 sec.) ESD (Human Body Mode) Min Max Unit 150 o 150 o TLEAD 300 o ESD 2000 -65 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 Symbol Input Voltage VIN Operating Junction Temperature Range TJ July 2003 Min 0 Max Unit 15 V 125 o C Low Dropout Regulator EC1086 Electrical Characteristics 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 Output Voltage Symbol VREF VOUT Conditions Min Typ Max Unit 1.238 1.225 1.250 1.250 1.262 1.270 V 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 5.05 5.1 V 0.015 0.035 0.2 0.2 % 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 Line Regulation July 2003 ∆VOUT EC1086-ADJ, IOUT = 10mA, 1.5V ≤ VIN ≤ 10V EC1086-1.5, IOUT = 10mA, 1.5V ≤ VIN - VOUT ≤ 10V 0.3 0.6 6 6 mV EC1086-1.8, IOUT = 10mA, 1.5V ≤ VIN - VOUT ≤ 10V 0.3 0.6 6 6 mV EC1086-2.5, IOUT = 10mA, 1.5V ≤ VIN - VOUT ≤ 10V 0.3 0.6 6 6 mV EC1086-3.0, IOUT = 10mA, 1.5V ≤ VIN - VOUT ≤ 10V 0.3 0.6 6 6 mV EC1086-3.3, IOUT = 10mA, 1.5V ≤ VIN - VOUT ≤ 10V 0.5 1 10 10 mV EC1086-5.0, IOUT = 10mA, 1.5V ≤ VIN - VOUT ≤ 10V 0.5 1 10 10 mV Low Dropout Regulator EC1086 Electrical Characteristics (Continued) 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 Symbol Load Regulation ∆VOUT Min ILIMIT Typ Max Unit EC1086-ADJ, 10mA ≤ IOUT ≤ 1.5A, VIN - VOUT = 2V 0.1 0.2 0.3 0.4 % EC1086-1.5, 10mA ≤ IOUT ≤ 1.5A, VIN - VOUT = 2V 3 6 12 20 mV EC1086-1.8, 10mA ≤ IOUT ≤ 1.5A, VIN - VOUT = 2V 3 6 12 20 mV EC1086-2.5, 10mA ≤ IOUT ≤ 1.5A, VIN - VOUT = 2V 3 6 12 20 mV EC1086-3.3, 10mA ≤ IOUT ≤ 1.5A, VIN - VOUT = 2V 3 7 15 20 mV EC1086-5.0, 10mA ≤ IOUT ≤ 1.5A, VIN - VOUT = 2V 5 10 20 35 mV 1.3 1.5 V IO = 1.5A, ∆VREF = 1% Dropout Voltage Current Limit Conditions VIN - VOUT = 2V, 1.5 2.3 A Minimum Load Current 1.4V ≤ VIN - VOUT ≤ 10V (For ADJ) 2 5 mA Quiescent Current VIN = VOUT + 1.3V 5 10 mA Ripple Rejection fRIPPLE = 120Hz, COUT = 25µF Tantalum, IOUT = 1.5A, VIN - VOUT = 3V Adjust Pin Current 10mA ≤ IOUT ≤ 1.5A, 1.4V ≤ VIN -VOUT ≤ 10V Adjust Pin Current Change Temperature Stability 60 75 dB 60 120 µA 0.2 5 µA 0.5 % % RMS Noise (% of VOUT) TA = 25oC, 10Hz ≤ f ≤ 10kHz 0.003 Thermal Shutdown Junction Temperature 165 oC 30 o Thermal Shutdown Hysteresis Thermal Resistance Junction-to-Case QJC SOT - 223 TO - 263 TO - 220 Note 2: Maximum power dissipation see Figure 5 July 2003 20 4 4 C oC/W Low Dropout Regulator EC1086 Typical Performance Characteristics 3.40 10.0 7.5 3.30 Power (W) Output Voltage (V) 3.35 3.25 SOT223 5.0 3.20 2.5 3.15 3.10 0 25 50 75 100 0.0 25 125 o Ambient Temperature ( C) 75 100 125 o Case Temperature ( C) Figure 4. Output Voltage vs. Temperature Figure 5. Maximum Power Dissipation 1.260 1.3 1.255 1.2 1.250 1.1 o Dropout Voltage (V) Reference Voltage (V) 50 1.245 1.240 1.235 1.0 o 0.9 0.7 1.225 0.6 0 25 50 75 100 125 o Ambient Temperature ( C) Figure 6. Reference voltage vs. Temperature July 2003 TA=25 C 0.8 1.230 1.220 TA=0 C 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 Output Current (A) Figure 7. Dropout Voltage vs. Output Current Low Dropout Regulator EC1086 Typical Performance Characteristics (Continued) 100 2.25 80 Adjust Pin Current (uA) Short Circuit Current (A) 90 2.00 1.75 1.50 70 60 50 40 30 20 1.25 10 1.00 0 0 25 50 75 100 125 0 Figure 8. Short Circuit Current vs. Temperature 75 100 125 Figure 9. Adjust Pin Current vs. Temperature 5 80 70 4 Ripple Rejection (dB) Minimum Load Current (mA) 50 Ambient Temperature ( C) Ambient Temperature ( C) 3 2 1 0 25 o o 60 50 40 30 0 25 50 75 100 125 o Ambient Temperature ( C) Figure 10. Minimum Load Current vs. Temperature July 2003 20 10 100 1k 10k 100k Frequency (Hz) Figure 11. Ripple Rejection vs. Frequency Low Dropout Regulator EC1086 Typical Performance Characteristics (Continued) Figure 12. Load Transient Response July 2003 Figure 13. Line Transient Response Low Dropout Regulator EC1086 Typical Applications EC1086-AD J VIN + VIN ADJ 10µF Tantalum VOUT VOUT=VREF(1+R2/R1) + IADJ . R2 VIN 10µF Tantalum + VIN EC1086-5.0 VOUT GND VOUT 22µF Tantalum + R1 120Ω R2 + VOUT 22µF Tantalum Figure 14. Typical Applications of EC1086 July 2003 Low Dropout Regulator EC1086 Mechanical Dimensions Unit: mm TO-263-3L 4.57+0.25 -0.50 3° 10.16+0.13 -0.51 70 7.42 1.27±0.12 ° 8.84 5.6 8.7+0.95 -0.06 1.27+0.12 7° 15.25±0.49 0.06±0.04 2.20 3° 7° 5° ±3° 0.81+0.18 -0.30 7.98 0.38±0.02 2.54±0.15 1.27±0.12 2.67±0.03 2.54 2.54 0.38 3°±3° July 2003 2.54 2.54 Low Dropout Regulator EC1086 Mechanical Dimensions (Continued) TO-220 Unit: mm 10.16±0.50 φ3.81±0.25 2.98±0.40 0.95±0.40 1.46±0.30 4.19±0.63 7° 2.48±0.40 3° 9.02±0.50 φ1.50×0.20 29.08±1.20 CJ 7° 15.37±1.14 1.85 0.20 0.381 60° 8.763 0.813 60° 0.381 2.54 July 2003 2.54 0.381±0.025 Low Dropout RegulatorEC1086 Mechanical Dimensions (Continued) SOT-223 Unit: mm 0.90±0.15 3.50±0.20 7.00±0.30 4.00±1.00 2.30±0.10 0.25 ±2° 11° 0.05±0.04 1.60±0.10 0.40 6.50±0.20 July 2003 ±2° 12° ±2° 12° 0.71±0.10 ±2° 12° 0.30±0.05 R0.15±0.05 R0.15±0.05 ±3° 6° Low Dropout Regulator EC1086 Mechanical Dimensions (Continued) TO-252 Unit: mm 6.53±0.15 2.28±0.10 5.33±0.10 0.52±0.06 0.4×45° 8° 5.46±0.10 0.80±0.15 9.80±0.30 1.20±0.12 0.51±0.03 0.07±0.05 5° 5° 0.71±0.07 July 2003 10° 3°±0.10 ° 0.51 2.80±0.20 2.29±0.05 4° ±3° 1.58±0.18 2.29±0.05 3° ± 0. 0.6 0.8±0.05