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| TS432 1.24V ADJUSTABLE SHUNT VOLTAGE REFERENCE s 1.24V TYP OUTPUT VOLTAGE s ULTRA LOW OPERATING CURRENT : 60A maximum at 25C s HIGH PRECISION @ 25C +/- 1% +/- 0.5% s HIGH STABILITY WHEN USED WITH CAPACITIVE LOADS s INDUSTRIAL TEMPERATURE RANGE: -40 to +85C s 100ppm/C TEMPERATURE COEFFICIENT DESCRIPTION The TS432 is an adjustable low power shunt voltage reference providing an output voltage from 1.24V to 10V over the industrial temperature range (-40 to +85C). Available in SOT23-3 surface mount package, it can be designed in applications where space saving is a critical issue. The low operating current is a key advantage for power restricted designs. In addition, the TS432 is very stable and can be used in a broad range of application conditions. APPLICATION L SOT23-3L (Plastic Micropackage) PIN CONNECTIONS (top view) s s s s s Computers Instrumentation Battery chargers Switch Mode Power Supply Battery operated equipments Ref Reference A Anode SOT23-3 ORDER CODE Precision SOT23-3 SOT23 Marking L235 L236 1% TS432ILT 0.5% TS432AILT Single temperature range: -40 to +85C K Cathode LT = Tiny Package (SOT23-3) - only available in Tape & Reel (LT) December 2002 1/7 TS432 ABSOLUTE MAXIMUM RATINGS Symbol VK IK IREF PD RTHJA TLEAD TSTG TJ ESD Cathode voltage Cathode current Reference input current Power dissipation 1) Parameter Value 12 -10 to +20 -0.05 to +3 340 SOT23-3 360 250 -65 to +150 150 1.5 150 Unit V mA mA mW C/W C C C kV V SOT23-3 Thermal resistance junction to ambient for Lead temperature (soldering 10 seconds) Storage temperature Junction temperature Human Body Model (HBM) Machine Model (MM) 1. Pd has been calculated with T amb = 25C, Tj = 150C and Rthja = 360C/W for the SOT23-3L package OPERATING CONDITIONS Symbol VK IK TAMB Cathode voltage Cathode current Ambient temperature Parameter Value 1.24 to 10 60 to 12m -40 to +85 Unit V A C ELECTRICAL CHARACTERISTICS Tamb = 25C (unless otherwise specified) Symbol VREF VREF IKMIN Parameter Reference voltage Reference voltage tolerance over temperature Minimum operating current Test Condition IK = 100A, VK=VREF TS432 (1%) TS432A (0.5%) IK = 100A, VK=VREF Tamb = 25C -40C < TAMB < +85C IKMIN < IK < 1mA VREF Reverse breakdown voltage change with operating current range -40C < TAMB < +85C 1mA < IK < 12mA -40C < TAMB < +85C VREF/ Reference voltage change with output voltage change VK IREF IOFF RKA KVH EN Reference input current Off-state cathode current Static impedance Long term stability Wide band noise IK = 10mA, VK=10V to VREF -40C < TAMB < +85C IK=10mA, R1=10K, R2=+ -40C < TAMB < +85C VREF=0, VK=10V -40C < TAMB < +85C IK = 100A to 12mA IK = 100A, t = 1000hrs IK = 100A 100Hz < F < 10kHz 0.25 120 200 1 50 1.8 2 0.7 1.228 1.234 7 40 Min. Typ. 1.24 1.252 1.246 16 60 65 1.5 2 4 6 2.5 3 100 200 100 150 0.5 mV/V nA nA ppm nV/Hz mV V Max. Unit mV A Note : Limits are 100% production tested at 25C. Limits over temperature are guaranteed through correlation and by design. 2/7 TS432 Reference voltage vs temperature 1.252 1.248 1.244 1.240 VK = VREF IK = 100A Test circuit for VK = VREF Reference Voltage (V) Input Ik Output VK 1.236 1.232 1.228 -40 VREF 0 40 80 120 Temperature (C) Cathode voltage vs cathode current Cathode voltage vs cathode current 1.5 10 IK Cathode current (mA) VK Cathode voltage (V) 5 VK = VREF TAMB = +25C TAMB=-40C 1.0 TAMB=+25C TAMB=+85C 0.5 TAMB=+125C 0 -5 -10 -1.0 -0.5 0.0 0.5 1.0 1.5 0.0 0 20 40 60 VK Cathode voltage (V) IK Cathode current (A) Reference input current vs temperature 100 IK = 10 mA R1 = 10 K R2 = + Static impedance vs temperature 0.4 80 RKA Static impedance (Ohms) IREF Reference current (nA) 0.3 VK = VREF IK = 100 A to 12 mA 60 0.2 40 20 0.1 0 -40 0 40 80 120 0.0 -40 0 40 80 120 Temperature (C) Temperature (C) 3/7 TS432 Off-State current vs temperature 150 Test circuit for Off-State current measurement IOFF Off-State current (nA) Input 100 VREF = 0 V VK = 10 V VK =10V IOFF 50 0 -40 0 40 80 120 Temperature (C) Ratio of change in reference input voltage to change in VK voltage vs temperature 3 Test circuit for VKA > VREF Ratio of change in Reference input voltage (mV/V) Input VK IK 2 IK = 10 mA VK = 10V to VREF R1 IREF 1 R2 VREF 0 -40 0 40 80 120 VK = VREF . (1+R1/R2) + IREF . R1 Temperature (C) Phase and Gain vs frequency 60 Gain TAMB = +25C 180 Test circuit for phase and gain measurement 5V 40 120 Phase (Degree) Gain (dB) 23.5 k 22 F Phase 20 60 1 F 33 k Output 0 2 10 10 3 10 4 10 5 0 6 10 Input 33 k Frequency (Hz) 4/7 TS432 Test circuit for pulse response at IK=100 A Test circuit for pulse response at IK = 1 mA 3V 0V 18K IK = 100A 0V 3V 1.8K IK=1mA Output Pulse response at IK = 100 A Pulse response at IK = 1mA Input and Output signals (Volt) Input and Ouput signals (Volt) 3 Input 3 Intput Input 2 IK = 1 mA TAMB = + 25C 2 Output 1 IK = 100 A TAMB = + 25C 0 0 5 10 15 1 Output 0 0 5 10 15 20 Time (s) Time (s) Pulse response at IK = 100 A Input and Output signals (Volt) Pulse response at IK = 1mA Input and Output signals (Volt) 3 Input 2 3 Input 2 IK = 1 mA TAMB = + 25C 1 Output IK = 100 A TAMB = + 25C 1 Output 0 -5 0 0 5 10 15 20 0 5 10 15 20 Time (s) Time (s) Output Pulse Generator f=10KHz Pulse Generator f=10KHz Intput 5/7 TS432 Equivalent input noise vs frequency 300 TAMB = + 25C Block diagram Cathode Noise (nV/Hz) 200 Vref + - 100 1.24V 0 2 10 10 3 10 4 10 5 10 6 10 7 Frequency (Hz) Anode 6/7 TS432 PACKAGE MECHANICAL DATA 3 PINS - TINY PACKAGE (SOT23) E A e B e1 D S A1 L H c Millimeters Dim. Min. A A1 A2 b c D E E1 e e1 L L1 k 0.890 0.010 0.880 0.300 0.080 2.800 2.100 1.200 Typ. Max. 1.120 0.100 1.020 0.500 0.200 3.040 2.640 1.400 Min. 0.035 0.0004 Inches Typ. Max. 0.044 0.004 0.040 0.020 0.008 0.120 0.104 0.055 0.950 0.037 0.012 0.003 0.110 0.083 0.047 2.900 1.300 0.950 1.900 0.500 0.540 0.114 0.051 0.037 0.075 0.020 0.021 0.400 0 0.600 8 0.016 0.024 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. (c) The ST logo is a registered trademark of STMicroelectronics 2002 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom http://www.st.com 7/7 |
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