SED5120

SE5120 1.5A CMOS Ultra LDO Voltage Regulator General Description Features  dropout linear regulators are designed for portable  Typical 150mV Dropout Voltage at 500mA.  power consumption and low dropout voltage. Each  device contains a bandgap voltage reference, an error  amplifier, a PMOS power transistor, and current limit   and temperature limit protection circuits.  Excellent Line and Load Regulation. The SE5120 series of fixed output ultra low battery powered applications, which require low The SE5120 is designed to work with low cost Output Voltages：0.8V 0.8V to 3.9V（0.1V 3.9V Step） High Accuracy Output Voltage of 2%. Ultra-Low Low Ground Current at 150μA 150 (Typ.) Thermal and Over-Current Current Protection. Short Circuit Protection Standard SOT-223 223 and TO-252 TO Package. electrolytic and ceramic capacitors and requires a minimum output capacitor of 10μF. Applications  USB removable devices  MPEG4 devices  Wireless LAN’s  Hand-Held Held Instrumentation. Instrumentation.  Portable DVD players   Digital camera Typical Application Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., • www.seawardinc.com • Page 1 SE5120 1.5A CMOS Ultra LDO Voltage Regulator Pin Configuration Pin Description Pin Name Pin Function Description GND Groung OUT Output Voltage IN Input Voltage Functional Block Diagram Vin Voltage Reference OverTemperature Protection Short Circuit Protection Vout OverCurrent Protection GND Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., • www.seawardinc.com • Page 2 SE5120 1.5A CMOS Ultra LDO Voltage Regulator Ordering Information Device Marking Information SE5120STxx-HF SE5120TXX TXX-YYWW-HF SED5120SGxx-HF SE5120GXX GXX-YYWW-HF SE5120JTxx-HF SE5120TXX TXX-YYWW-HF SE5120JGxx-HF SE5120GXX GXX-YYWW-HF Package SOT-223 TO-252 Remarks YYWW means Production batch XX denotes voltage options Absolute Maximum Ratings Parameter Symbol Value Units Input Voltage VIN 6 V Output Voltage Range VOUT -0.3 to VIN V Power Dissipation PD Internally Limited (3) Output Short Circuit Duration Thermal Resistance, Junction Junction-to-Ambient Infinite ΘJA 155(SOT-223) 223) °C/W 90(TO-252) 252) Lead Temperature (Soldering, 5 sec.) 260 °C Junction Temperature Range TJ 0 to +150 °C Storage Temperature Range TS -40 40 to +150 °C Recommended Operating Conditions Parameter Symbol Value Units Supply Input Voltage Range VIN 5 V Junction Temperature Range TJ 0 to +125 °C Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., • www.seawardinc.com • Page 3 SE5120 1.5A CMOS Ultra LDO Voltage Regulator Electrical Characteristics （VIN = 5V; CIN = 10μF; COUT = 10μF; IOUT = 10mA; TJ = 25°C; unless otherwise noted） Symbol Parameter Output Voltage Accuracy VOUT ΔVOUT/VOUT Line Regulation ΔVOUT/VOUT Load Regulation (5) ΔVOUT/ΔT Output Voltage Temperature Coefficient VIN – VOUT Dropout Voltage (6) TPROTECTION Thermal Protection IQ Quiescent Current ILIMIT Current Limit Ishort Short Circuit Current Test Conditions Min Typ Max SE5120XX12 1.176 1.2 1.224 SE5120XX15 1.47 1.5 1.53 SE5120XX18 1.764 1.8 1.836 SE5120XX25 2.45 2.5 2.55 SE5120XX33 3.234 3.3 3.366 VIN = (VOUT + 0.7)V to 5.5V -- 0.1 -- %/V -- 2 -- % Note 4 -- 0.1 -- IOUT = 150mA -- 40 -- IOUT = 500mA -- 150 -- IOUT = 1000mA -- 300 -- Thermal Protection Temperature -- 150 -- Protection Hysterisys -- 30 -- IOUT = 0mA -- 150 -- μA -- 2.5 -- A -- 0.55 -- A VIN = (VOUT + 0.7)V IOUT = 10mA to 1500mA Vin=Vout+1V; Vout< 0.4V Unit V mV/° C mV °C Note 1: Exceeding the absolute maximum rating may damage the device. Note 2: The device is not guaranteed to function outside its operating rating. Note 3: The maximum allowable power dissipation at any T A (ambient temperature) is calculated using: PD(MAX) = (TJ(MAX) – TA)/ΘJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. See “Thermal Consideration” section for details Note 4: Output voltage temperature coefficient is the worst case voltage change divided by the total temperature range. Note 5: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load range from 0.1mA to 1200mA. Changes in output voltage due to heating effects ffects are covered by the thermal regulation specification. Note 6: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V differential. Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., • www.seawardinc.com • Page 4 SE5120 1.5A CMOS Ultra LDO Voltage Regulator Typical Performance Characteristics Output Voltage vs. Load Current 3.340 0.82 3.320 Output Voltage (V) 0.84 0.8 0.78 0.76 0.74 0.72 0.7 3.300 3.280 3.260 3.240 3.220 3.200 30 40 50 60 70 80 90 100 110 120 130 140 150 0 0. 0. 0. 0. 0. 0. 0. 0. 0. 1 1. 1. 1. 1. 1. 1. 123 456 789 123456 T (℃) Load Current (A) Output Voltage vs. Input Voltage 3.4 Output Voltage (V) Reference Voltage （ V） Reference Voltage vs. Temperature 3.35 3.3 3.25 3.2 3.15 3.1 3.3 3.8 4.3 4.8 5.3 Input Voltage (V) Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., • www.seawardinc.com • Page 5 5.8 6.3 SE5120 1.5A CMOS Ultra LDO Voltage Regulator Applications Information Application Hints Thermal Considerations Like any low dropout regulator, SE5120 requires It is important that the thermal limit of the package is external capacitors to ensure stability. The external not exceeded. The SE5120 has built-in built thermal capacitors must be carefully selected to ensure protection. When the thermal limit is exceeded, the performance. IC will enter protection, and VOUT will be pulled to Input Capacitor ground. The power dissipation for An input capacitor of at least 10 10μF is required. application can be calculated as following: a given Ceramic or Tantalum can be used. sed. The value can be increase without upper limit. The power dissipation (PD) is Output Capacitor PD = IOUT * [VIN – VOUT] An output capacitor is required for stability. It must be placed no more than 1 cm away from the VOUT pin, The thermal limit of the package is then limited to and connected directly between VOUT and GND pins. PD(MAX) = [TJ – TA]/ΘJA where TJ is the junction The minimum value is 10μF but may be increase temperature, TA is the ambient temperature, and ΘJA without limit. is around 155°C/W（SOT-223 223） for SE5120. SE5120 is designed to enter thermal protection at 170°C. For example, if TA is 25°C then the maximum PD is limited to about 0.94W. In other words, if IOUT(MAX) = 1200mA, then [VIN – VOUT] cannot exceed 780mV. Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., • www.seawardinc.com • Page 6 SE5120 1.5A CMOS Ultra LDO Voltage Regulator Outline Drawing For SOT SOT-223 Outline Drawing For TO--252 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., • www.seawardinc.com • Page 7 SE5120 1.5A CMOS Ultra LDO Voltage Regulator 联系方式： 北京思旺电子技术有限公司–中国总部 中国总部 地址：中国北京市海淀区信息路 22 号上地科技综合楼 B 座二层 邮编：100085 电话：010-82895700/1/5 传真：010-82895706 邮箱：sales@seawardinc.com.cn sales@seawardinc.com.cn Seaward Electronics Incorporated – 北美办事处 1512 Centre Pointe Dr. Milpitas, CA95035, USA 电话：1-650-444-0713 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., • www.seawardinc.com • Page 8