TS4431 STMicroelectronics, TS4431 Datasheet
TS4431
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TS4431 Summary of contents
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... Low current consumption: 250 A Industrial temperature range: -40 to +85°C 100ppm/°C temperature coefficient Description The TS4431 is a four-terminal device dedicated to low voltage Switch Mode Power Supplies (SMPS). It integrates a 1.224V voltage reference, an amplifier, and an open collector output transistor in a single package. The TS4431’s operating mode is similar to the well-known standard voltage reference, the TL431 ...
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... Table 2. Operating conditions Symbol T Operating temperature range OPER V Supply voltage CC I Output sink current SINK 2/8 Parameter (1) SOT23-5 = 25°C, T =150°C and AMB Junction Parameter TS4431 Value Unit 500 mW -65 to +150 ° 200 V 250 °C Value Unit -40 to +85 ° ...
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... Typical Application Schematic 2 Typical Application Schematic Figure 1. SMPS power supply: secondary side 3 Vcc U1 Sink 1 TS4431 Cd1 100nF Gnd 2 Vref 3 Nc Ref TS4431 Vout ...
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... Electrical Characteristics 3 Electrical Characteristics Table 3. Electrical characteristics for T otherwise specified Symbol V Reference voltage TS4431A 0.5% REF V Reference voltage TS4431 1% REF T Temperature coefficient C Change REF ---------------- - Change REF ---------------- - I I SINK SIN K I Supply current CC I OFF-State supply current OFF I Reference input current ...
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... Vcc=10V Vcc=1.5V Icc vs. temp. Isink=2mA 350 300 250 200 150 100 50 0 -40°C -20°C 0°C 25°C 50°C Tem perature (°C) Vcc=1.8V Vref vs. temp. Vcc=1.8V 1.235 1.23 1.225 1.22 1.215 -40°C -20°C 0°C 25°C Tem perature (°C) Isink=20mA Isink=0.5mA TS4431 85°C 50°C 85°C ...
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... Tem perature (°C) Isink 0.5 to 20mA Figure 10. Vsat vs. temp. Vcc=1.8V 100 -40°C -20°C 0°C 25°C Tem perature (°C) Isink=20mA 6/8 Figure 9. 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 50°C 85°C 50°C 85°C Isink=5mA Iref vs. temp. Vcc=1.8V -40°C -20°C 0°C 25°C 50°C 85°C Tem perature (°C) Isink 0.1 to 10mA TS4431 ...
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... TS4431 4 Package Mechanical Data In order to meet environmental requirements, ST offers these devices in ECOPACK These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label ...
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... Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 8/8 1 First release corresponding to Preliminary Data version of datasheet. 2 First release of fully mature product data sheet. All other names are the property of their respective owners © 2005 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com TS4431 Changes ...