SE5119 SEAWARD | Alldatasheet
Document overview
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Technical content
Features
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. ¾ Current and thermal limiting. ¾ No-load stability. ¾ Standard SOT-89-3L package. Pin Configuration 1 2 3 SOT-89 Top view
Applications
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 2.8V or 3.3V to 2.5V. Typical Application
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: V OUT = 3.3V 2. B: V OUT = 2.8V 3. C: V OUT = 2.5V 4. D: V OUT = 1.8V 5. E: V OUT = 1.5V 6. F: V OUT = 3.0V
All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. • www.seawardinc.com • Page 2 500mA CMOS LDO Linear Regulator SE5119 Absolute Maximum Ratings (1) Power Dissipation (PD) ………….. Internally Limited (3) Storage Temperature (TS) ………….. -10°C to +150°C Operating Ratings(2) Supply Input Voltage (VIN) ……..…… +2.8V to +5.5V Junction Temperature (TJ) …….…….. 0°C to +125°C Package Thermal
Electrical Characteristics
VIN = 5V; CIN = 2.2μF; COUT = 2.2μF, IOUT = 10mA; TJ = 25°C, unless otherwise specified. Symbol Parameter Conditions Min Typ Max Units VOUT Output Voltage Accuracy SE5119-1.5V(VIN=3.3V) SE5119-1.8V(VIN=3.3V) SE5119-2.5V SE5119-2.8V SE5119-3.0V SE5119-3.3V 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 ΔVOUT /ΔT Output Voltage Temperature Coefficient Note 4 -- 50 -- ppm/℃ ΔVOUT / VOUT Line Regulation V IN = (VOUT + 1)V to 5.5V -- 1 -- %/V IOUT =10mA to 250mA -- 1 -- ΔVOUT / VOUT Load Regulation (5) VIN = (VOUT +1)V IOUT =10mA to 500mA -- 1.5 -- IOUT =10mA -- 15 -- IOUT =150mA -- 175 -- IOUT =250mA -- 320 -- VIN - VOUT Dropout Voltage(6) (VOUT>2V) IOUT =500mA -- 800 -- mV Thermal Protection Temperature -- 150 -- ℃ TPROTECTION Thermal Protection Protection Hysterisys -- 20 -- ℃ PSRR Ripple Rejection f =120Hz -- 51 -- dB IGROUND Ground Current I OUT =10mA -- 65 -- uA ILIMIT Current Limit V OUT =0V -- 700 -- mA
All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. • www.seawardinc.com • Page 3 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 4 500mA CMOS LDO Linear Regulator SE5119 Application Hints Like any Low dropout regulator, SE5119 requires external capacitors to ensure stability. The external capacitors must be carefully selected to ensure the performances. Input Capacitor: An Input Capacitor of at least 2.2uF is required. Ceramic or Tantalum can be used. The value can be increased without upper limit. Output Capacitor: An Output Capacitor is required for look stability. It must be located no more than 1cm away from the V OUT pin, and connected directly between VOUT and GND pins. The minimum value is 2.2uF but once again its value can be increased without limit. Thermal Consideration It is important that the thermal limit of the package should not be exceeded. The SE5119 has built-in thermal protection. When the thermal limit is exceeded, the IC will enter protection, and the V OUT will be reset to zero. The power dissipation for a given application can be calculated as follows: The Power Dissipation (P D) is PD = IOUT * [VIN – VOUT] The thermal limit of the package is then limited to P D(MAX) = [TJ – TA]/θJA where TJ is the junction temperature, TA is ambient temperature, and θJA is around 180°C/W for SE5119. SE5119 is designed to enter thermal protection at 150°C. For example, if 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 5 500mA CMOS LDO Linear Regulator SE5119 Line Transient Load Transient (10mA – 500mA) Typical Performance Characteristics (VIN = 5V, CIN = 2.2μF, COUT = 2.2μF, TA=25°C, unless otherwise noted.) Load Regulation 1.5 2.5 3.5 0 100 200 300 400 500 600 Output Current (mA) Output Voltage 1.5V 1.8V 2.5V 3.3V Output Voltage vs Temperature 1.5 2.5 3.5 0 50 100 150 Temperature (C) Output Voltage (V) 1.5V 1.8V 2.5V 3.3V Quiescent Current vs Temperature (Output Voltage @ 2.5V) 1.06 1.07 1.08 1.09 1.1 1.11 1.12 1.13 1.14 1.15 1.16 1.17 0 20 40 60 80 100 120 140 Temperature (C) Quiescent Current (mA ) Dropout Voltage vs Output Current 0.1 0.2 0.3 0.4 0.5 0.6 0 100 200 300 400 500 600 Output Current (mA) Dropout Voltage (V) 1.5V 1.8V 2.5V 3.3V
All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. • www.seawardinc.com • Page 6 500mA CMOS LDO Linear Regulator SE5119 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: sales@seawardinc.com.cn 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: sales@seawardinc.com.tw Seaward Electronics Incorporated – North America 1512 Centre Pointe Dr. Milpitas, CA95035, USA Tel: 1-408-821-6600 Last Updated - 4/21/2006 Outline Drawing for SOT-89 A B C D EF G H I J K L M SOT-89 MIN MAX MIN MAX A 0.173 0.181 4.400 4.600 B 0.159 0.167 4.050 4.250 C 0.067 0.075 1.700 1.900 D 0.051 0.059 1.300 1.500 E 0.094 0.102 2.400 2.600 F 0.035 0.047 0.890 1.200 G H I 0.016 0.020 0.400 0.520 J 0.055 0.063 1.400 1.600 K 0.014 0.016 0.350 0.410 L M 3.00REF 1.50REF 0.118REF 0.059REF 0.70REF 10°TYP 0.028REF 10°TYP DIMN INCHES MM DIMENSIONS