SE5168 150mA CMOS LDO Regulator Description Features The SE5168 series of fixed output low dropout linear regulators are designed for portable battery powered applications, which require low dropout voltage and low ground current. Each device contains a voltage reference unit, an error amplifier, a PMOS power transistor, and resistors for setting output voltage, and current limit and temperature limit protection circuits. ¾ Typical Low Dropout Voltage of 200mV at 75mA. ¾ Guaranteed 150mA output over the full operating temperature range. ¾ Excellent Line and Load Regulation. ¾ High Accuracy Output Voltage of 2%. ¾ Typical Low Ground Current at 50μA ¾ Current Limiting and Thermal Protection. ¾ Standard SOT-23-3L, TO-92, and SC70 (SOT-323-3L) Package. The SE5168 has been designed to be used with low cost capacitors and requires a minimum Applications output capacitor of 1.0μF. Standard voltage versions ¾ Cellphones. are 1.5, 1.8, 2.5, 2.8, 3.0, and 3.3V. ¾ Wireless LAN’s. ¾ Hand-Held Instrumentation. ¾ Portable Video Game Devices. ¾ Digital Cameras. Ordering/Marking Information Package Revision Ordering Information 3.3V SE5168AHN 2.8V SE5168BHN 2.5V SE5168CHN 1.8V SE5168DHN 1.5V SE5168EHN 3.0V SE5168FHN 3.3V SE5168AHG 2.8V SE5168BHG 2.5V SE5168CHG 1.8V SE5168DHG 1.5V SE5168EHG 3.0V SE5168FHG Marking Information SE5168AHN YYWW SE5168BHN YYWW SE5168CHN YYWW SE5168DHN YYWW SE5168EHN YYWW SE5168FHN YYWW SE5168AHG YYWW SE5168BHG YYWW SE5168CHG YYWW SE5168DHG YYWW SE5168EHG YYWW SE5168FHG YYWW YY: year code WW: week code. 12/5/2008 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 1 SE5168 150mA CMOS LDO Regulator Ordering/Marking Information (Continued) Package Revision Ordering Information Marking Information 3.3V SE5168ALN 168AN_ 2.8V SE5168BLN 168BN_ 2.5V SE5168CLN 168CN_ 1.8V SE5168DLN 168DN_ 1.5V SE5168ELN 168EN_ 3.0V SE5168FLN 168FN_ 3.3V SE5168ALG 168AG_ 2.8V SE5168BLG 168BG_ 2.5V SE5168CLG 168CG_ 1.8V SE5168DLG 168DG_ for production year 2001, and 1.5V SE5168ELG 168EG_ underlined 1 is for year 2002. 3.0V SE5168FLG 168FG_ next character is marked on top for 3.3V SE5168APN 6AN 2003, and underlined for 2004. The 2.8V SE5168BPN 6BN 2.5V SE5168CPN 6CN 1.8V SE5168DPN 6DN 1.5V SE5168EPN 6EN 3.0V SE5168FPN 6FN 3.3V SE5168APG 6AG 2.8V SE5168BPG 6BG 2.5V SE5168CPG 6CG 1.8V SE5168DPG 6DG 1.5V SE5168EPG 6EG 3.0V SE5168FPG 6FG Starting with 1, a bar on top of 1 is The naming pattern continues with consecutive characters for later years. The last character is the week code. (A-Z: 1-26, a-z: 27-52) 12/5/2008 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 2 SE5168 150mA CMOS LDO Regulator Absolute Maximum Ratings(1) Operating Ratings(2) Supply Input Voltage (VIN) ..…….........................+6V Supply Input Voltage (VIN) ……...... +2.0V to +5.5V (3) Junction Temperature (TJ) …….….. 0°C to +125°C Power Dissipation (PD) ……….. Internally Limited Junction Temperature (TJ) ……...................…150°C Package Thermal Resistance Lead Temperature (soldering, 5 sec.) …....…. 260°C 160°C/W (TO-92) Storage Temperature (TS) ……….. -40°C to +150°C 230°C/W (SOT-23-3L) 250°C/W (SC70) Electrical Characteristics VIN =5V; CIN = 2.2μF; COUT = 2.2μF（Electrolytic Symbol capacitor）; IOUT = 10mA; TJ = 25°C; unless otherwise noted Parameter Conditions Min Typ Max Unit VOUT Output Voltage Accuracy SE5168 – 1.5V(VIN=1.8V,IOUT=1mA) SE5168 – 1.8V(VIN=3.3V,IOUT=10mA) SE5168 – 2.5V SE5168 – 2.8V SE5168 – 3.0V SE5168 – 3.3V 1.470 1.764 2.450 2.744 2.940 3.234 1.5 1.8 2.5 2.8 3.0 3.3 1.530 1.836 2.550 2.856 3.060 3.366 V V V V V V ΔVOUT Line Regulation VIN = (VOUT + 1)V to 5.5V -- 1 -- %/V ΔVOUT Load Regulation (5) -- 1 -- % Note 4 -- 0.033 -- mV/°C IOUT = 10mA -- 20 -- IOUT = 75mA -- 200 -- IOUT = 150mA -- 500 -- Thermal Thermal Protection Temperature -- 150 -- Protection Protection Hysterisys -- 20 -- PSRR Ripple Rejection f = 120 Hz -- 57 -- dB IQ Quiescent Current IOUT = 10mA -- 50 -- μA ILIMIT Current Limit -- 200 -- mA VIN =(VOUT + 1)V or 2.7V IOUT = 10mA to 150mA Output Voltage ΔVOUT/ΔT Temperature Coefficient VIN – VOUT Dropout Voltage (6) (VOUT>2V) TPROTECTION Revision 12/5/2008 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 3 mV °C SE5168 150mA CMOS LDO Regulator 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 TA (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 150mA. Changes in output voltage due to heating effects 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. Note 7: The Cin or Cout should be chosen carefully. Please refer to the Application Hints Typical Application Revision 12/5/2008 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 4 SE5168 150mA CMOS LDO Regulator Load Regulation (VOUT = 3.3V) (VIN = 5V, IOUT = 1mA to 150mA) 3.6000 3.6000 3.5000 3.5000 3.4000 3.4000 VOUT (V) VOUT (V) Line Regulation (VOUT = 3.3V) (VIN = 4.3V to 5V, IOUT = 1mA) 3.3000 3.2000 3.1000 3.3000 3.2000 3.1000 3.0000 3.0000 4.2 4.7 5.2 5.7 0 50 100 150 IOUT (mA) VIN (V) Output Voltage vs Temperature IQ vs IOUT (VOUT = 1.5V) (VIN = 3.3V, IOUT = 10mA) (VIN = 3.3V, IOUT = 1mA to 150mA) 100 1.600 90 70 IQ (uA) Output Voltage(V) 80 1.550 1.500 60 50 40 30 1.450 20 10 1.400 0 20 30 40 50 60 70 80 90 100 110 120 0 20 40 60 80 100 120 140 IOUT (mA) Temperature(C) Transient Response (VOUT = 1.5V) Power Supply Rejection Ratio (PSRR) (IOUT = 1mA to 50mA) (VIN = 5V, VPP = 1V) 70.0 PSRR(dB) 65.0 60.0 55.0 50.0 45.0 40.0 10 100 1000 10000 100000 Frequency(Hz) Revision 12/5/2008 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 5 160 SE5168 150mA CMOS LDO Regulator Application Hints Thermal Considerations Like any low dropout regulator, SE5168 requires It is important that the thermal limit of the package is external capacitors to ensure stability. not exceeded. The The SE5168 has built-in thermal external capacitors must be carefully selected to protection. ensure performance. the IC will enter protection, and VOUT will be pulled Input Capacitor An input capacitor of at least 2.2μF is required. The inexpensive Electrolytic capacitor is preferred. The value can be increased without upper limit. to ground. When the thermal limit is exceeded, The power dissipation for a given application can be calculated as following: The power dissipation (PD) is PD = IOUT * [VIN – VOUT] Output Capacitor An output capacitor is required for stability. It must The thermal limit of the package is then limited to be placed no more than 1 cm away from the VOUT PD(MAX) = [TJ – TA]/ΘJA where TJ is the junction pin, and connected directly between VOUT and GND temperature, TA is the ambient temperature, and pins. ΘJA is around 250°C/W for SE5168. The inexpensive Electrolytic capacitor is SE5168 is recommended. The minimum value is 2.2μF but designed to enter thermal protection at 150°C. For may be increased without limit. example, if TA is 25°C then the maximum PD is limited to about 0.5W. In other words, if IOUT(MAX) = 150mA, then [VIN – VOUT] cannot exceed 3.33V. Revision 12/5/2008 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 6 SE5168 150mA CMOS LDO Regulator OUTLINE DRAWING SOT-23-3L (SC-59) C J N H B DIM A B C D E F G H J K L D A E F G K L DIMENSIONS INCHES MM MIN MAX MIN MAX 0.110 0.047 0.083 0.035 0.070 0.018 0.015 0.0005 0.034 0.003 - 0.120 0.055 0.104 0.040 0.080 0.024 0.020 0.004 0.040 0.007 0.027 2.80 1.20 2.10 0.89 1.78 0.45 0.37 0.013 0.887 0.085 - 3.04 1.40 2.64 1.03 2.05 0.60 0.51 0.10 1.02 0.18 0.69 OUTLINE DRAWING TO-92 A N DIM B D E G F H K Revision J A B E F G H J K DIMENSIONS INCHES MM MIN MAX MIN MAX 0.175 0.170 0.500 0.016 0.045 0.095 0.080 0.125 0.205 0.210 0.610 0.021 0.055 0.105 0.105 0.165 4.445 4.318 12.70 0.407 1.143 2.413 2.032 3.175 12/5/2008 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 7 5.207 5.334 15.50 0.533 1.397 2.667 2.667 4.191 SE5168 150mA CMOS LDO Regulator OUTLINE DRAWING SC70 (SOT-323-3L) 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 - 12/5/2008 Revision 12/5/2008 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 8