1.5V Voltage Reference Features Description SE5170 is a precision voltage reference that is designed to work at very low current and low voltage conditions. The SE5170 can work from a supply voltage as low as 1.6v, and consumes as low as 8uA current. Temperature stability is averaging 50ppm/oC. It is ideal for MP3/MPEG4 applications where a constant voltage reference is required, which is SE5170 independent of the environment temperature. In addition, SE5170 is designed to be stable under conditions where Cin and Cout are not present. However, it is recommended to include Cin and Cout in the system design as this will increase the PSRR rating, as shown in the PSRR graph. ¾ Minimum Vin at 1.6V. ¾ Low Ground current as low as 8uA. (Typ.) ¾ Guaranteed 5mA output current over the full operating temperature range. ¾ Extremely low temperature drift at 50ppm/oC. ¾ Stable operation without Cin and Cout. ¾ Rugged 5KV ESD withstand capability. ¾ Standard SOT-23-3L package. Applications ¾ 1.5V Reference for Action 2051, 2085, 2097 MP3 solutions. ¾ 1.5V Temperature Independent Voltage reference. ¾ Other independent voltage reference applications. Pin Configuration COUT = 1uF CIN = 1uF Typical Application Revision 12/4/2008 All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. • www.seawardinc.com.cn • Page 1 SE5170 1.5V Voltage Reference Absolute Maximum Ratings(1) Operating Ratings(2) Supply Input Voltage (VIN) ..………..……………….+6V Supply Input Voltage (VIN) ……..…… +1.6V to +5.5V (3) Junction Temperature (TJ) …….…….. 0°C to +125°C Power Dissipation (PD) ………….. Internally Limited Package Thermal Resistance ……………… 250°C/W Junction Temperature (TJ) ………................….. 150°C Lead Temperature (soldering, 5 sec.) ……....…. 260°C Storage Temperature (TS) ………….. -10°C to +150°C Electrical Characteristics VIN = 5V; IOUT = 1mA; TJ = 25°C, unless otherwise specified. Symbol Parameter Input Voltage VIN Output Voltage Accuracy Output Voltage Temperature Coefficient ΔVOUT / VOUT ΔVOUT / VOUT TPROTECTION Line Regulation Load Regulation Min Typ 1.6 Range VOUT ΔVOUT /ΔT Conditions (5) Thermal Protection Max Units 6 V SE5170-1.5V 1.470 1.5 1.530 V Note 4 -- -50 -- ppm/℃ VIN = 1.6V to 5.5V -- 0.3 -- %/V VIN =2V,IOUT =0mA to 5mA -- 1.0 -- % Thermal Protection Temperature -- 150 -- Protection Hysterisys -- 20 -- ℃ PSRR Ripple Rejection f =100Hz,Vin=2.2V,Vp-p=1V -- 70 -- dB IGROUND Ground Current IOUT =1mA -- 8 -- μA Revision 12/4/2008 All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. • www.seawardinc.com.cn • Page 2 1.5V Voltage Reference SE5170 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. 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 0A to 5mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification. Revision 12/4/2008 All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. • www.seawardinc.com.cn • Page 3 SE5170 Output Voltage vs. Temperature Line Regulation (Iout=1mA) 1.55 1.54 1.53 1.52 1.51 1.5 1.49 1.48 1.47 1.46 1.45 Output Voltage (V) Vout (V) 1.5V Voltage Reference 1.5 2.5 3.5 4.5 Vin (V) 1.55 1.54 1.53 1.52 1.51 1.5 1.49 1.48 1.47 1.46 1.45 0 5.5 40 60 80 Temperature (C) 1.55 1.54 1.53 1.52 1.51 1.5 1.49 1.48 1.47 1.46 1.45 120 80 70 60 50 40 30 1uF 20 0.1uF 10 No Cap 0 0 1 2 3 4 Vin (V) 5 0.1 6 1 10 Frequency (kHz) IQ vs. Vin 15 13 11 IQ (uA) 100 PSRR (Vin=2.2V,Vp-p=1V,Cin=Cout) PSRR (dB) Vout (V) Load Regulation (Vin=1.8V) 20 9 7 5 3 1 0 2 4 Vin (V) 6 8 Revision 12/4/2008 All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. • www.seawardinc.com.cn • Page 4 100 SE5170 1.5V Voltage Reference OUTLINE DRAWING SOT-23-3L (SC-59) C J H B D A E F G K L N DIM A B C D E F G H J 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 - 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 - 12/4/2008 Revision 12/4/2008 All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. • www.seawardinc.com.cn • Page 5 3.04 1.40 2.64 1.03 2.05 0.60 0.51 0.10 1.02 0.18 0.69