TS4040 2.5V micropower shunt voltage reference Features 2.5V output voltage Ultra low current consumption: 40A typ. High precision 25C: 2% and 1% High stability when used with capacitive loads Industrial temperature range:-40C to +85C L 150ppm/C maximum temperature coefficient SOT23-3L (Plastic micropackage) Applications Computers Instrumentation Battery chargers Pin connections Switch mode power supply (Top view) Battery operated equipments Description The TS4040 is a low power shunt voltage reference providing a stable 2.5V output voltage over the industrial temperature range (-40C to +85C). Available in SOT23-3 surface mount package, it can be designed in applications where space saving is critical. The low operating current is a key advantage for power restricted designs. In addition, the TS4040 is very stable and can be used in a broad range of application conditions. August 2007 Rev 2 1/9 www.st.com 9Absolute maximum ratings and operating conditions TS4040 1 Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratings (AMR) Symbol Parameter Value Unit I Reverse breakdown current 20 mA k I Forward current 10 mA f (1) P Power dissipation SOT23-3 360 mW d T Storage temperature -65 to +150 C stg (2) ESD Human body model (HBM) 2kV (3) Machine model (MM) 200 V T Lead temperature (soldering, 10 seconds) 260 C lead 1. Pd is calculated with T = 25C, T =150C and R = 340C/W for the SOT23-3 package. amb junction thja 2. Human body model: 100pF discharged through a 1.5k resistor between two pins of the device, done for all couples of pin combinations with other pins floating. 3. Machine model: a 200pF cap is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5), done for all couples of pin combinations with other pins floating. Table 2. Operating conditions Symbol Parameter Value Unit I Minimum operating current 65 A k-min I Maximum operating current 15 mA k-max T Operating free air temperature range -40 to +85 C oper 2/9