Description Features ¾ Low Dropout Performance. ¾ Low Quiescent Current：3mA（Typ.） ¾ Guaranteed 1A Output Current. ¾ Wide Input Supply Voltage Range. ¾ Stable operation without Cin and Cout. In addition, SE8117B is designed to be stable under ¾ Over-temperature and Over-current Protection. conditions where Cin and Cout are not present. ¾ Fixed or Adjustable Output Voltage. However, it is recommended to include Cin and ¾ Rugged 2KV ESD withstand capability. Cout in the system design as this will increase the ¾ Available in SOT-223 and TO252 Packages. PSRR rating. SE8117B is characterized under ¾ RoHS Compliant and 100% Lead (Pb)-Free The SE8117B series of high performance low dropout voltage regulators are designed for applications that require efficient conversion and fast transient response. Junction Temperature from -40°C to +130°C. Application Pin Configuration ¾ Active SCSI Terminators. ¾ High Efficiency Linear Regulators. ¾ 5V to 3.3V Linear Regulators ¾ Motherboard Clock Supplies. Ordering Information Device SE8117BTXXLF SE8117BTALF Marking Information SE8117TXXLF SE8117TALF Package SOT-223 TO-252 VOUT Fixed output voltages; XX denotes voltage options (Lead-free) (1.5V,1.8V, 2.5V,3.3V and 5.0V). Adjustable output voltage. Absolute Maximum Rating Symbol Parameter VIN θJA TJ TSTG Input Supply Voltage Thermal Resistance Junction to Ambient (SOT-223) Operating Junction Temperature Range Storage Temperature Range TLEAD Lead Temperature (Soldering 10 Sec) Maximum Units 9 60 -40 to 130 -40 to 150 V °C/W °C °C 260 °C Revision 7/28/2008 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com • Page 1 Electrical Characteristic VIN,MAX ≤ 8V, VIN,MIN – VOUT = 1.5V, IOUT = 10mA, CIN = 10µF, COUT = 22µF, TA = 25°C, unless otherwise specified. Symbol VO Parameter Output Voltage (1) (1) Test Condition Min Typ Max SE8117BT15 1.470 1.5 1.530 SE8117BT18 1.764 1.8 1.836 SE8117BT25 2.450 2.5 2.550 SE8117BT33 3.234 3.3 3.366 SE8117BT50 4.900 5.0 5.100 Units V VREF Reference Voltage (Adj. Voltage Version) (VIN - VOUT) = 1.5V IOUT = 10mA (-2%) VSR Line Regulation (1) VOUT + 1.5V < VIN < 8V IOUT = 10mA -- 0.3 -- % VLR Load Regulation (1) (VIN - VOUT) = 1.5V 10mA ≤ IOUT ≤ 1A -- 0.5 -- % IQ Quiescent Current(2) Fixed Output Version -- 3 -- mA IADJ Adjust Pin Current -- 65 -- μA ∆IADJ Adjust Pin Current Change VOUT + 1.5V < VIN < 8V 10mA ≤ IOUT ≤ 1A -- 14 -- μA VD Dropout Voltage (3) IOUT = 1A -- 1.3 -- V IO Minimum Load Current -- 0.4 -- mA ICL Current Limit -- 1.8 -- A TC Temperature Coefficient -- 0.07 -- %/°C OTP Thermal Protection -- 175 -- °C VN RMS Output Noise TA = 25°C, 10Hz ≤ f ≤ 10kHz -- 0.003 -- %VO RA Ripple Rejection Ratio f = 120Hz, COUT = 22μF (Tantalum), (VIN - VOUT) = 3V, IOUT = 100mA -- 57 -- dB 1.250 (+2%) V Notes: 1. Low duty cycle pulse testing with which TJ remains unchanged. 2. The IQ of SE8117BT15 is 1.2mA(Typ.) 3. The dropout voltage is the input/output differential at which the circuit ceases to regulate against further reduction in input voltage. It is measured when the output voltage has dropped 98% from the nominal value obtained at VIN = VOUT +1.5V. Revision 7/28/2008 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com • Page 2 Typical Application Adjustable Voltage Regulator VIN >= 3.0V 3 SE8117BTA 2 VOUT = 1.5V VREF R1 124 Ohm 1 CIN 10uF COUT 22uF IADJ R2 24.9 Ohm VOUT = VREF (1 + R2 ) + IADJR 2 R1 Fixed Voltage Regulator VIN >= 4.8V CIN 10uF 3 SE8117BT33 2 VOUT = 3.3V COUT 22uF 1 IQ Revision 7/28/2008 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com • Page 3 Typical Performance Characteristics Reference Voltage (mV) Reference Voltage vs Junction Temperature 1250 1245 1240 1235 1230 1225 1220 -25 0 25 50 75 100 125 150 Junction Temperature (C) Dropout Voltage vs. Output Current 1.15 1.13 PSRR (dB) Dropout Voltage (V) 1.17 1.11 1.09 1.07 1.05 1.03 0 200 400 600 800 Output Current(mA) 1000 PSRR 70 60 50 40 30 20 10 0 0.001 IOUT = 100mA 0.01 0.1 1 Frequency (kHz) Line Transients 10 Load Transients VIN = 4.5V – 5.5 V Load Regulation 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1.9 1.8 1.7 V o u t (V ) V o u t (V ) CIN = 0.1μF, COUT = 1μF SE8117B_3.3V SE8117B_1.8V 0 200 400 600 Iload (mA) 800 1000 Line Regulation 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1.9 1.8 1.7 SE8117B_3.3 SE8117B_1.8 3 4 5 6 7 8 9 Vin (V) Revision 7/28/2008 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com • Page 4 10 11 12 Typical Performance Characteristics Short Transient Response Revision 7/28/2008 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com • Page 5 Outline Drawing for SOT-223 Outline Drawing for TO252 Revision 7/28/2008 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com • Page 6 Customer Support Seaward Electronics Incorporated – China Section B, 2nd Floor, ShangDi Scientific Office Complex, #22 XinXi Road Haidian District, Beijing 100085, China Tel: 86-10-8289-5700/01/05 Fax: 86-10-8289-5706 Seaward Electronics Corporation – Taiwan 2F, #181, Sec. 3, Minquan East Rd, Taipei, Taiwan R.O.C Tel: 886-2-2712-0307 Fax: 886-2-2712-0191 Seaward Electronics Incorporated – North America 1512 Centre Pointe Dr. Milpitas, CA95035, USA Tel: 1-408-821-6600 Last Updated - 7/28/2008 Revision 7/28/2008 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com • Page 7