SE1122-LF-1.2V

Description Features SE1122 is a low dropout positive fixed-mode regulator  1.3V typical dropout with minimum of 1A output current capability. The  Fixed 1.2V± 2% output voltage product provide  Fast transient response well-regulated supply for low voltage IC applications  Output current limiting such as high-speed bus termination and low current  Built-in thermal shutdown 1.2V logic supply. SE1122 is also well suited for other  Good noise rejection applications is  Rugged 2KV ESD withstand capability. guaranteed to have a typical 1.3V dropout at full load  Available in SOT223 &TO252 Packages. current making it ideal to provide well-regulated  Works best with inexpensive electrolytic Capcitors. outputs of 1.2 output voltage with 2.7V input voltage  RoHS Compliant is specifically such as designed VGA to cards. SE1122 supply. Application Pin Configuration Tab is Vout  PC peripheral  Communication Ordering Information Device SE1122-HF GND OUT TO252 IN SE1122-LF Package VOUT SOT-223 (Halogen Free) Fixed output TO252 voltages 1.2V (Lead free) Typical Application Revision 1/21/2014 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2007 • www.seawardinc.com.cn • Page 1 Absolute Maximum Rating Symbol Parameter VIN θJA Input Supply Voltage Thermal Resistance Junction to Ambient (SOT-223) TJ Operating Junction Temperature Range TSTG Storage Temperature Range TLEAD Lead Temperature (Soldering 10 Sec) Maximum Units 12 140 V °C/W 0 to 125 °C -40 to 150 °C 260 °C Note 1: hermal Resistance Junction to Ambient (TO252) is 105 °C/W Electrical Characteristic VIN =2.8V, IOUT = 10mA, CIN = 0.1µF, COUT = 0.1µF, TA = 25°C, unless otherwise specified. Symbol Parameter Test Condition VO Output Voltage (1) Min Typ Max Units 1.176 1.2 1.224 V VSR Line Regulation (1) 2.8V < VIN < 12V -- 0.3 -- %/V VLR Load Regulation (1) 10mA ≤ IOUT ≤ 1A -- 0.0005 -- %/mA Iq Quiescent Current 3 5 mA VD Dropout Voltage (2) -- 1.3 -- V ICL Current Limit 1.1 -- -- A TC Temperature Coefficient -- 0.02 -- %/°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 = 10mA -- 57 -- dB IOUT = 1A Notes: 1. Low duty cycle pulse testing with which TJ remains unchanged. 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 2% from the nominal value obtained at VIN = VOUT +Vdropout. Revision 1/21/2014 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2007 • www.seawardinc.com.cn • Page 2 PSRR 1.30 70 1.25 60 PSRR (dB) Dropout Voltage (V) Dropout Voltage VS Output Current 1.20 1.15 1.10 1.05 50 40 30 20 10 1.00 0 0 200 400 600 800 1000 1200 10 Output Current (mA) 100 Frequency (Hz) Output Voltage Vs Junction Temperature 1.212 Output Voltage （V） 1.21 1.208 1.206 1.204 1.202 1.2 1.198 1.196 1.194 -50 -25 0 25 50 75 Junction Temperature（C） 1000 100 125 Revision 1/21/2014 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2007 • www.seawardinc.com.cn • Page 3 10000 Outline Drawing for SOT-223 Outline Drawing for TO252 Revision 1/21/2014 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2007 • www.seawardinc.com.cn • Page 4 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 - 1/21/2014 Revision 1/21/2014 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2007 • www.seawardinc.com.cn • Page 5