TS3431CIZT

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. Available in SOT23-3 surface mount package, it can be designed in applications where space saving is a critical issue. Z TO-92 (Plastic Package) Pin Connections (top view) TO-92 (top view) Applications ■ ■ ■ ■ ■ Computers Instrumentation Battery chargers Switch mode power supply Battery operated equipments SOT23-3 (top view) Reference 1 TS3431 3 Anode Cathode 2 Order Codes Part Number TS3431ILT/AILT/BILT/CILT TS3431IZ/AIZ/BIZ/CIZ TS3431IZT/AIZT/BIZT/CIZT TS3431IZ-AP/AIZ-AP/BIZ-AP/CIZ-AP -40, +125°C TO-92 Temperature Range Package SOT23-3L Packaging Tape & Reel Bulk Tape & Reel Ammo pack Marking L280-L281 L282-L283 December 2004 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 PD Tstd ESD Tlead Cathode to Anode Voltage Reverse Breakdown Current Reference Current Power Dissipation 1 Parameter Value 25 -100 to +150 -0.05 to10 360 625 -65 to +150 2 200 250 Unit V mA mA mW °C kV V °C SOT23-3 TO92 Storage Temperature 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 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 IK VK Toper Cathode Operating Current Cathode Operating Voltage Operating Free Air Temperature Range Parameter Value 0.5 to 100 1.24 to 24 -40 to +125 Unit mA V °C 2/11 Electrical Characteristics TS3431 2 Electrical Characteristics Table 3. Tamb = 25°C (unless otherwise specified) Symbol Parameter Reference input voltage IK = 10mA VK Test Condition TS3431 (2%) TS3431A (1%) TS3431B (0.5%) TS3431C (0.25%) Variation of reference input voltage over 0°C < T < +70°C temperature -40°C < T < +105°C -40°C < T < +125°C TC IKMIN Temperature coefficient Minimum Operating Current -40°C < T < +125°C T = 25°C -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 Reference input current IK=10mA, R1=10KΩ, R2=+ ∞ Reference input current deviation IK=10mA, R1=10KΩ, R2=+ Off-state cathode current VK=24V IOFF RKA EN Reverse Static Impedance Wideband Noise T=25°C -40°C < T < +125°C 0°C < T < +70°C -40°C < T < +125°C T=25°C -40°C < T < +105°C -40°C < T < +125°C IK = 1 to 100mA IK = 10mA 1kHz < f < 100kHz 0.2 100 0.5 0.9 35 1.2 0.35 Min. 1.215 1.228 1.234 1.237 1.24 Typ. Max. 1.265 1.252 1.246 1.243 10 18 21 100 0.4 0.5 1.5 2 0.9 1.5 2 1 1.5 500 1000 2000 0.4 nA µA µA ppm/°C mA mV V Unit ∆VK ∆ Vref --------------∆ Vka IREF mV/V ∆IREF 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 Figure 1. Reference voltage vs. temperature Electrical Characteristics Figure 4. Test circuit for VK = Vref 1.250 Voltage Reference (V) Input 1.245 Output Ik 1.240 IK = 10mA VK = VREF Vka 1.235 Vref 1.230 -40 0 40 80 120 Temperature (°C) Figure 2. Cathode voltage vs cathode current Figure 5. Minimum operating current vs temperature IKMIN (mA) Minimum operating current 0.5 1.5 Cathode voltage VK (V) T=-40°C 1.0 0.4 0.3 VK = VREF 0.2 0.5 T=+25°C T=+125°C 0.1 0.0 0.0 0.1 0.2 0.3 0.4 0.0 -40 0 40 80 120 Cathode current IK (mA) Temperature (°C) Figure 3. Reference input current vs temperature 1.00 Figure 6. Dynamic impedance vs frequency 0.5 Reference current IREF (µA) Dynamic impedance ZKA (Ω ) 0.75 0.4 VK = VREF T=+25°C 0.3 0.50 0.2 0.25 0.1 0.00 -40 0 40 80 120 0.0 10 100 1000 10000 Temperature (°C) Frequency (Hz) 4/11 Electrical Characteristics Figure 7. Off-State current vs temperature TS3431 Figure 10. Test circuit for off-state current measurement 300 OFF State Current IOFF (nA) 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 2.0 Figure 11. Test circuit for VK > V REF Input (mV/V) 1.5 Vka Ik R1 Iref ∆VREF / ∆VK 1.0 0.5 ∆VK = 1.24 to 24V IK = 10 mA R2 Vref 0.0 -40 0 40 80 120 Temperature (°C) Vka = Vref . (1+R1/R2) + Iref . R1 Figure 9. Phase and gain vs frequency Figure 12. Test circuit for phase and gain measurement 80 10 µF Phase (°) 40 Gain (dB) T = +25°C Intput 0 1000 10000 100000 1000000 Frequency (Hz) 4.3 K Ω 20 Output 5/11 0 40 10 µF IK=10mA 6.8 K Ω TS3431 Figure 13. Pulse response at Ik=1mA Electrical Characteristics Figure 16. Test circuit for pulse response at Ik = 1mA 5.0 Input Voltage ... T=+25°C 2.7K Ω IK=1m A 4V Voltage (V) Output voltage ... 0 0.0 0 2 4 6 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 270 Ω IK=10mA 4V Voltage (V) 2.5 Output voltage ... 0 0.0 0 2 4 6 8 Time (µs) Figure 15. Block diagram Figure 18. Equivalent input noise vs frequency 300 VK = VREF IK = 10 mA T = +25°C 200 Cathode Reference + - Noise (nV / √ Hz) 100 VREF 0 0.1 1 10 100 1000 10000 Anode Frequency (kHz) 6/11 Output Intput Output Intput 2.5 Package Mechanical Data TS3431 3 Package Mechanical Data 3.1 3 Pins - Plastic Package TO-92 (tape & reel) A1 P P T H d A H1 H0 H I1 W0 D0 F1 F2 P2 P0 W2 W1 W L1 Millimeters 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. 5.0 5.0 4.0 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 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 Min. Inches Typ. Max. 0.197 0.197 0.157 0.018 0.500 0.500 0.250 0.098 0 0 0.709 0.236 0.354 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 15.5 3.8 16 4.0 0.610 0.150 0.630 0.157 7/11 TS3431 3.2 3 Pins - Plastic Package TO-92 (tape ammo pack) A1 P P Package Mechanical Data T H d A H1 H0 H I1 W0 D0 F1 F2 P2 P0 W2 W1 W L1 Millimeters 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. 5.0 5.0 4.0 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 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 Min. Inches Typ. Max. 0.197 0.197 0.157 0.018 0.500 0.500 0.250 0.098 0 0 0.709 0.236 0.354 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 15.5 3.8 16 4.0 0.610 0.150 0.630 0.157 8/11 Package Mechanical Data 3.3 3 Pins - Plastic Package TO-92 (bulk) TO-92 MECHANICA DATA mm. DIM. MIN. A b D E e e1 L R S1 W 4.32 0.36 4.45 3.30 2.41 1.14 12.7 2.16 0.92 0.41 TYP MAX. 4.95 0.51 4.95 3.94 2.67 1.40 15.49 2.41 1.52 0.56 MIN. 170.1 14.2 175.2 129.9 94.9 44.9 500.0 85.0 36.2 16.1 TYP. MAX. 194.9 20.1 194.9 155.1 105.1 55.1 609.8 94.9 59.8 22.0 mils TS3431 0102782/C 9/11 TS3431 3.4 SOT23-3L Package SOT23-3L MECHANICAL DATA mm. DIM. MIN. A A1 A2 b C D E E1 e e1 L L1 k 0.400 0.540 8° 0.890 0.010 0.880 0.300 0.080 2.800 2.100 1.200 1.300 0.950 1.900 0.600 15.75 2.900 0.950 TYP MAX. 1.120 0.100 1.020 0.500 0.200 3.040 2.64 1.400 MIN. 35.05 0.39 34.65 11.81 3.15 110.26 82.70 47.26 Package Mechanical Data mils TYP. MAX. 44.12 3.94 37.41 40.17 19.69 7.88 114.17 119.72 103.96 51.19 37.41 74.82 23.63 21.27 8° 55.13 D e GAUGE PLANE 0.25 L L1 E1 E b c e1 C C A2 A 0.10 SEATING PLANE 7110469/A A1 10/11 Revision History TS3431 4 Revision History Date 01 Jan. 2004 Revision 1 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 Description of Changes 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. The ST logo is a registered trademark of STMicroelectronics All other names are the property of their respective owners © 2004 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 11/11