TS4436ICT STMicroelectronics

TS4436 Adjustable 0.6V Open Collector Shunt Voltage Reference Internal 0.6V 0.5% precision Low output saturation voltage 75mV max. between SINK and GND Low current consumption: 150A SC70 (Plastic Micropackage) Low supply voltage 1.7V Industrial temperature range: -40 to +85C 150ppm/C temperature coefficient Pin connections (top view) Lead free available 11 55 PGPGNNDD REREFF Description The TS4436 is a four-terminal device dedicated to 22 GNGNDD low voltage Switch Mode Power Supplies (SMPS). 3434 SISINNKK VV CCCC It integrates a 0.6V voltage reference, an amplifier, and an open collector output transistor in a single package. The TS4436s operating mode is similar to the well-known standard voltage reference, the TL431. It maintains the Applications desired feedback voltage at the REF pin in a Low voltage switch mode power supplies closed loop configuration by sinking a current proportional to the error voltage at the REF pin. Isolated DC/DC converter Computers TS4436 features an open collector transistor with an ultra-low saturation voltage. This feature allows Low voltage discrete regulators it to be used in series with the optocoupler in an SMPS for regulation up to a 1.8V output voltage. Order Codes Part Number Accuracy Temperature Range Package Packing Marking TS4436AICT 0.5% L22 -40, +85C SC70 Tape & Reel TS4436ICT 1% L21 March 2006 Revision 1 1/8 www.st.com 8Absolute Maximum Ratings and Operating Conditions TS4436 1 Absolute Maximum Ratings and Operating Conditions Table 1. Key parameters and their absolute maximum ratings Symbol Parameter Value Unit I Output sink current 30 mA SINK V Supply voltage 12 V CC V Output voltage 12 V SINK (1) P Power Dissipation SOT23-5 mW diss (2) P Power Dissipation SC70 310 mW diss T Storage Temperature -65 to +150 C STD Human Body Model (HBM) 2 kV ESD Machine Model (MM) 200 V T Lead Temperature (soldering, 10 seconds) 250 C LEAD 1. P has been calculated with T = 25C, T =150C and diss AMB Junction R = 250C/W for the SOT23-5 package thJA R = 81C/W for the SOT23-5 package thJC 2. P has been calculated with T = 25C, T =150C and diss AMB Junction R = 250C/W for the SOT23-5 package thJA R = 81C/W for the SOT23-5 package thJC Table 2. Operating conditions Symbol Parameter Value Unit T Operating temperature range -40 to +85 C OPER V Supply voltage 1.7 to 10 V CC I Output sink current up to 20 mA SINK 2/8