TS3431BIZ

TS3431 1.24V Programmable Shunt Voltage Reference ■ ■ ■ ■ ■ Adjustable output voltage: 1.24 to 24V Several precision @ 25°C ±2%, ±1%, ±0.5% and ±0.25% Sink current capability: 0.4 to 100mA Industrial temperature range: -40 to +125°C Performances compatible with industry standard TL431 L SOT23-3L (Plastic Micropackage) Description The TS3431 is a programmable shunt voltage reference with guaranteed temperature stability over the entire temperature range of operation (-40 to +125°C). The output voltage may be set to any value between 1.24V and 24V with an external resistor bridge. Z TO-92 (Plastic Package) Pin Connections (top view) Available in SOT23-3 surface mount package, it can be designed in applications where space saving is a critical issue. TO-92 (top view) Applications ■ ■ ■ ■ ■ Computers Instrumentation Battery chargers Switch mode power supply Battery operated equipments SOT23-3 (top view) 1 TS3431 Reference Cathode 3 Anode 2 Order Codes Part Number Temperature Range TS3431ILT/AILT/BILT/CILT TS3431IZ/AIZ/BIZ/CIZ TS3431IZT/AIZT/BIZT/CIZT TS3431IZ-AP/AIZ-AP/BIZ-AP/CIZ-AP December 2004 Package Packaging Marking SOT23-3L Tape & Reel L280-L281 L282-L283 TO-92 Bulk Tape & Reel Ammo pack -40, +125°C Revision 2 1/11 TS3431 Absolute Maximum Ratings 1 Absolute Maximum Ratings Table 1. Key parameters and their absolute maximum ratings Symbol VKA IK IREF Parameter Cathode to Anode Voltage Reverse Breakdown Current Reference Current 1 PD Power Dissipation Tstd Storage Temperature ESD Tlead SOT23-3 TO92 Human Body Model (HBM) Machine Model (MM) Lead Temperature (soldering, 10 seconds) 1) Pd has been calculated with Tamb = 25°C and Tj = 150°C and Value Unit 25 V -100 to +150 mA -0.05 to10 mA 360 625 mW -65 to +150 °C 2 200 250 kV V °C Rthjc = 66°C/W, Rthja = 200°C/W for the TO92 package Rthjc = 110°C/W, Rthja = 340°C/W for the SOT23-3L package Table 2. Operating Conditions Symbol Parameter IK Cathode Operating Current VK Cathode Operating Voltage Toper 2/11 Operating Free Air Temperature Range Value Unit 0.5 to 100 mA 1.24 to 24 V -40 to +125 °C Electrical Characteristics TS3431 2 Electrical Characteristics Table 3. Tamb = 25°C (unless otherwise specified) Symbol Parameter Reference input voltage IK = 10mA VK ∆VK TC IKMIN ∆Vref ---------------∆Vka IREF ∆IREF EN Min. TS3431 (2%) 1.215 TS3431A (1%) 1.228 TS3431B (0.5%) 1.234 TS3431C (0.25%) 1.237 Typ. Max. 1.24 1.252 1.246 V 1.243 18 -40°C < T < +125°C 21 Temperature coefficient -40°C < T < +125°C 100 Minimum Operating Current T = 25°C 10 0.35 -40°C < T < +125°C Ratio of change in reference input volt- IK=10mA age to change in cathode to anode volt- VK= 24 to 1.24V age -40°C < T < +125°C Unit 1.265 Variation of reference input voltage over 0°C < T < +70°C temperature -40°C < T < +105°C 0.4 0.5 1.2 1.5 mV ppm/°C mA mV/V 2 Reference input current IK=10mA, R1=10KΩ, R2=+ ∞ T=25°C Reference input current deviation IK=10mA, R1=10KΩ, R2=+ 0°C < T < +70°C 0.5 1 -40°C < T < +125°C 0.9 1.5 Off-state cathode current VK=24V T=25°C 35 500 IOFF RKA Test Condition 0.9 -40°C < T < +125°C 1.5 2 -40°C < T < +105°C 1000 -40°C < T < +125°C 2000 Reverse Static Impedance IK = 1 to 100mA 0.2 Wideband Noise IK = 10mA 1kHz < f < 100kHz 100 0.4 µA µA nA Ω nV/√Hz Note: Limits are 100% production tested at 25°C. Limits over temperature are guaranteed through correlation and by design. 3/11 TS3431 Electrical Characteristics Figure 1. Reference voltage vs. temperature Figure 4. Test circuit for VK = Vref Voltage Reference (V) 1.250 Input Output 1.245 Ik IK = 10mA VK = VREF 1.240 Vka 1.235 Vref 1.230 -40 0 40 80 120 Temperature (°C) Figure 2. Cathode voltage vs cathode current IKMIN (mA) T=-40°C Minimum operating current Cathode voltage VK (V) 1.5 1.0 0.5 0.0 0.0 T=+25°C 0.1 Figure 5. Minimum operating current vs temperature T=+125°C 0.2 0.3 0.5 0.4 0.3 VK = VREF 0.2 0.1 0.0 -40 0.4 0 40 Cathode current IK (mA) Figure 3. Reference input current vs temperature 120 Figure 6. Dynamic impedance vs frequency 1.00 0.5 Dynamic impedance ZKA (Ω ) Reference current IREF (µA) 80 Temperature (°C) 0.75 0.50 0.25 VK = VREF T=+25°C 0.4 0.3 0.2 0.1 0.00 -40 0 40 Temperature (°C) 4/11 80 120 0.0 10 100 1000 Frequency (Hz) 10000 Electrical Characteristics TS3431 Figure 7. Off-State current vs temperature Figure 10. Test circuit for off-state current measurement OFF State Current IOFF (nA) 300 Vka=24V 200 Ioff 100 0 -40 0 40 80 120 Temperature (°C) Figure 8. Ratio of change in reference input voltage to change in Vka voltage vs temperature Figure 11. Test circuit for VK > V REF 2.0 ∆VREF / ∆VK (mV/V) Input Vka Ik 1.5 R1 Iref 1.0 ∆VK = 1.24 to 24V 0.5 0.0 -40 R2 IK = 10 mA 0 40 80 120 Vka = Vref . (1+R1/R2) + Iref . R1 Temperature (°C) Figure 9. Phase and gain vs frequency Vref Figure 12. Test circuit for phase and gain measurement 80 20 0 1000 10000 100000 Output 10 µF T = +25°C Intput Gain (dB) 0 40 IK=10mA 6.8 K Ω 40 4.3 K Ω Phase (°) 10 µF 1000000 Frequency (Hz) 5/11 TS3431 Electrical Characteristics Figure 13. Pulse response at Ik=1mA Figure 16. Test circuit for pulse response at Ik = 1mA 5.0 T=+25°C Input Voltage 2.7KΩ IK=1mA Output voltage 0 ... 0.0 0 2 4 6 Output 4V 2.5 Intput Voltage (V) ... 8 Time (µs) Figure 14. Pulse response at Ik = 10mA Figure 17. Test circuit for pulse response at Ik = 10mA 5.0 Input Voltage T=+25°C 270Ω IK=10mA 2.5 Output voltage Output 4V Intput Voltage (V) ... 0 ... 0.0 0 2 4 6 8 Time (µs) Figure 15. Block diagram Figure 18. Equivalent input noise vs frequency 300 Reference + - Noise (nV / √ Hz) Cathode VK = VREF IK = 10 mA T = +25°C 200 100 VREF 0 0.1 Anode 6/11 1 10 100 Frequency (kHz) 1000 10000 Package Mechanical Data TS3431 3 Package Mechanical Data 3.1 3 Pins - Plastic Package TO-92 (tape & reel) A1 P T P A H W2 W0 W W1 H0 I1 H L1 H1 d D0 F1 F2 P2 P0 Millimeters Inches Dim. Min. AL A T d I1 P PO P2 F1/F2 ∆h ∆P W W0 W1 W2 H H0 H1 DO L1 Typ. Max. Min. Typ. 5.0 5.0 4.0 0.197 0.197 0.157 0.45 2.5 11.7 12.4 5.95 2.4 -1 -1 17.5 5.7 8.5 12.7 12.7 6.35 2.5 0 0 18.0 6 9 15.5 16 3.8 4.0 Max. 0.018 13.7 13 6.75 2.8 1 1 19.0 6.3 9.75 0.5 20 16.5 25 4.2 11 0.098 0.461 0.488 0.234 0.094 -0.039 -0.039 0.689 0.224 0.335 0.500 0.500 0.250 0.098 0 0 0.709 0.236 0.354 0.610 0.630 0.150 0.157 0.539 0.512 0.266 0.110 0.039 0.039 0.748 0.248 0.384 0.020 0.787 0.650 0.984 0.165 0.433 7/11 TS3431 Package Mechanical Data 3.2 3 Pins - Plastic Package TO-92 (tape ammo pack) A1 P T P A H W2 W0 W W1 H0 I1 H L1 H1 d D0 F1 F2 P2 P0 Millimeters Inches Dim. Min. AL A T d I1 P PO P2 F1/F2 ∆h ∆P W W0 W1 W2 H H0 H1 DO L1 8/11 Typ. Max. Min. Typ. 5.0 5.0 4.0 0.197 0.197 0.157 0.45 2.5 11.7 12.4 5.95 2.4 -1 -1 17.5 5.7 8.5 12.7 12.7 6.35 2.5 0 0 18.0 6 9 15.5 16 3.8 4.0 Max. 0.018 13.7 13 6.75 2.8 1 1 19.0 6.3 9.75 0.5 20 16.5 25 4.2 11 0.098 0.461 0.488 0.234 0.094 -0.039 -0.039 0.689 0.224 0.335 0.500 0.500 0.250 0.098 0 0 0.709 0.236 0.354 0.610 0.630 0.150 0.157 0.539 0.512 0.266 0.110 0.039 0.039 0.748 0.248 0.384 0.020 0.787 0.650 0.984 0.165 0.433 Package Mechanical Data TS3431 3.3 3 Pins - Plastic Package TO-92 (bulk) TO-92 MECHANICA DATA mm. mils DIM. MIN. TYP MAX. MIN. TYP. MAX. A 4.32 4.95 170.1 194.9 b 0.36 0.51 14.2 20.1 D 4.45 4.95 175.2 194.9 E 3.30 3.94 129.9 155.1 e 2.41 2.67 94.9 105.1 e1 1.14 1.40 44.9 55.1 L 12.7 15.49 500.0 609.8 R 2.16 2.41 85.0 94.9 S1 0.92 1.52 36.2 59.8 W 0.41 0.56 16.1 22.0 0102782/C 9/11 TS3431 Package Mechanical Data 3.4 SOT23-3L Package SOT23-3L MECHANICAL DATA mm. mils DIM. MIN. TYP MAX. MIN. TYP. MAX. A 0.890 1.120 35.05 44.12 A1 0.010 0.100 0.39 3.94 A2 0.880 1.020 34.65 b 0.300 0.500 11.81 19.69 C 0.080 0.200 3.15 7.88 D 2.800 3.040 110.26 E 2.100 2.64 82.70 E1 1.200 1.400 47.26 0.950 2.900 1.300 37.41 114.17 51.19 e 0.950 37.41 1.900 74.82 0.400 0.600 L1 119.72 103.96 e1 L 40.17 15.75 55.13 23.63 0.540 21.27 k 8° 8° D GAUGE PLANE e L E E1 L1 0.25 b c C e1 0.10 SEATING PLANE A A2 C A1 7110469/A 10/11 Revision History TS3431 4 Revision History Date Revision 01 Jan. 2004 1 Description of Changes First Release Specific content changes as follows: 01 Dec. 2004 2 • • • CI version added in Table: Order Codes on page 1 Rthjc information added in Table1: Key parameters and their absolute maximum ratings on page 2 Test condition added in Table3: Tamb = 25°C (unless otherwise specified) on page 3 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. 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