500mA CMOS LDO Linear Regulator SE5119 Features Description The SE5119 is an efficient linear voltage regulator. It has extra low dropout voltage. At light loads the typical dropout voltage is 15mV, at full load the typical dropout voltage is 800mV. The ¾ Typical 175mV dropout voltage at 150mA. ¾ Low Ground current at 65uA. (Typ.) ¾ Guaranteed 500mA output over the full operating temperature range. ¾ Extremely tight load and line regulation. ¾ Low temperature coefficient. The SE5119 has low ground current at 65uA, ¾ Current and thermal limiting. so it can help prolong battery life. The SE5119 is ¾ No-load stability. specially designed for hand-held, battery-powered ¾ Standard SOT-89-3L package. output voltage accuracy is better than 2%. devices. Pin Configuration Applications Top view 2 1 3 ¾ Active SCSI terminators. ¾ Post regulators for switching supplies. ¾ Battery chargers. ¾ High-efficiency linear power supplies. ¾ Computer motherboard, display, graphic card DC/DC converter, such as 5V to 3.3V, 3.3V to SOT-89 Typical Application 2.8V or 3.3V to 2.5V. Ordering Information SE5119 _ _ _ PIN (1=>3): 1. G: OUT/GND/IN 2. N: GND/IN/OUT Package Type: 1. K: SOT-89-3L Output Voltage: 1. A: VOUT = 3.3V 2. B: VOUT = 2.8V 3. C: VOUT = 2.5V 4. D: VOUT = 1.8V 5. E: VOUT = 1.5V 6. F: VOUT = 3.0V All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. • www.seawardinc.com • Page 1 SE5119 500mA CMOS LDO Linear Regulator Absolute Maximum Ratings(1) Operating Ratings(2) Supply Input Voltage (VIN) ..………..……………….+6V Supply Input Voltage (VIN) ……..…… +2.8V to +5.5V (3) Junction Temperature (TJ) …….…….. 0°C to +125°C Power Dissipation (PD) ………….. Internally Limited Junction Temperature (TJ) ………................….. 150°C Package Thermal Lead Temperature (soldering, 5 sec.) ……....…. 260°C Resistance …………………………………… 180°C/W Storage Temperature (TS) ………….. -10°C to +150°C Electrical Characteristics VIN = 5V; CIN = 2.2μF; COUT = 2.2μF, IOUT = 10mA; TJ = 25°C, unless otherwise specified. Symbol VOUT ΔVOUT /ΔT ΔVOUT / VOUT Parameter Conditions Min Typ Max SE5119-1.5V(VIN=3.3V) 1.470 1.5 1.530 SE5119-1.8V(VIN=3.3V) 1.764 1.8 1.836 Output Voltage SE5119-2.5V 2.450 2.5 2.550 Accuracy SE5119-2.8V 2.744 2.8 2.856 Output Voltage Temperature Coefficient Line Regulation Load Regulation (5) SE5119-3.0V 2.940 3.0 3.060 3.234 3.3 3.366 Note 4 -- 50 -- ppm/℃ VIN = (VOUT + 1)V to 5.5V -- 1 -- %/V -- 1 -- VIN = (VOUT +1)V 250mA IOUT =10mA to TPROTECTION % -- 1.5 -- IOUT =10mA -- 15 -- Dropout Voltage(6) IOUT =150mA -- 175 -- (VOUT>2V) IOUT =250mA -- 320 -- IOUT =500mA -- 800 -- Thermal Protection Temperature -- 150 -- ℃ Protection Hysterisys -- 20 -- ℃ 500mA VIN - VOUT V SE5119-3.3V IOUT =10mA to ΔVOUT / VOUT Units Thermal Protection mV PSRR Ripple Rejection f =120Hz -- 51 -- dB IGROUND Ground Current IOUT =10mA -- 65 -- uA ILIMIT Current Limit VOUT =0V -- 700 -- mA All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. • www.seawardinc.com • Page 2 500mA CMOS LDO Linear Regulator SE5119 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 Table 1 and the “Thermal Considerations” 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 100μA to 500mA. 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. All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. • www.seawardinc.com • Page 3 500mA CMOS LDO Linear Regulator SE5119 Application Hints Thermal Consideration Like any Low dropout regulator, SE5119 requires It is important that the thermal limit of the package external capacitors to ensure stability. The external should not be exceeded. The SE5119 has built-in capacitors must be carefully selected to ensure the thermal protection. When the thermal limit is performances. exceeded, the IC will enter protection, and the VOUT will be reset to zero. The power dissipation for a given application can be calculated as follows: Input Capacitor: An Input Capacitor of at least 2.2uF is required. Ceramic or Tantalum can be used. The value can The Power Dissipation (PD) is be increased without upper limit. PD = IOUT * [VIN – VOUT] Output Capacitor: The thermal limit of the package is then limited to An Output Capacitor is required for look stability. It PD(MAX) = [TJ – TA]/θJA where TJ is the junction must be located no more than 1cm away from the temperature, TA is ambient temperature, and θJA is VOUT pin, and connected directly between VOUT and around 180°C/W for SE5119. SE5119 is designed GND pins. The minimum value is 2.2uF but once to enter thermal protection at 150°C. For example, if again its value can be increased without limit. TA is 25°C then the max PD is limited to about 0.7W. In other words, if IOUT(MAX) = 500mA, then [VIN – VOUT] can not exceed 1.4V. All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. • www.seawardinc.com • Page 4 500mA CMOS LDO Linear Regulator SE5119 Typical Performance Characteristics (VIN = 5V, CIN = 2.2μF, COUT = 2.2μF, TA=25°C, unless otherwise noted.) Output Voltage vs Temperature 3.5 3.5 3 3 1.5V 1.8V 2.5V 3.3V 2.5 2 Output Voltage (V) Output Voltage Load Regulation 1.5V 1.8V 2.5V 3.3V 2.5 2 1.5 1.5 1 1 0 100 200 300 400 500 0 600 50 100 150 Temperature (C) Output Current (mA) Quiescent Current vs Temperature (Output Voltage @ 2.5V) Dropout Voltage vs Output Current 0.5 Dropout Voltage (V) Quiescent Current (mA) 0.6 1.17 1.16 1.15 1.14 1.13 1.12 1.11 1.1 1.09 1.08 1.07 1.06 0.4 1.5V 1.8V 2.5V 3.3V 0.3 0.2 0.1 0 0 20 40 60 80 Temperature (C) Line Transient 100 120 140 0 100 200 300 400 500 600 Output Current (mA) Load Transient (10mA – 500mA) All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. • www.seawardinc.com • Page 5 500mA CMOS LDO Linear Regulator SE5119 Outline Drawing for SOT-89 DIM SOT-89 A C D J M K E F B L H G I A B C D E F G H I J K L M N DIMENSIONS INCHES MM MIN MAX MIN MAX 0.173 0.181 0.159 0.167 0.067 0.075 0.051 0.059 0.094 0.102 0.035 0.047 0.118REF 0.059REF 4.400 4.600 4.050 4.250 1.700 1.900 1.300 1.500 2.400 2.600 0.890 1.200 3.00REF 1.50REF 0.016 0.020 0.055 0.063 0.014 0.016 10°TYP 0.028REF 0.400 0.520 1.400 1.600 0.350 0.410 10°TYP 0.70REF Contact Information Seaward Electronics Incorporated – China Rm 1605, Building 1, International Pioneering Park, #1 Shangdi Xinxi Rd Haidian District, Beijing 100085, China Tel: 86-10-8289-5700/01/05 Fax: 86-10-8289-5706 Email: [email protected] 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 Email: [email protected] Seaward Electronics Incorporated – North America 1512 Centre Pointe Dr. Milpitas, CA95035, USA Tel: 1-408-821-6600 Last Updated - 4/21/2006 All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. • www.seawardinc.com • Page 6