TLE6365

Step Down Voltage-Regulator with Reset TLE 6365 Datasheet 1 Overview 1.1 Features • • • • • • • • • • Step down converter Supply Over- and Under-Voltage-Lockout Low Output voltage tolerance Output Overvoltage Lockout Output Under-Voltage-Reset with delay Overtemperature Shutdown Wide Ambient operation range -40°C to 125°C Wide Supply voltage operation range Very low current consumption Very small P-DSO-8 SMD package P-DSO-8-3 Type Ordering Code Package TLE 6365 G Q67006-A9515 P-DSO-8-3 Functional description General The TLE 6365 G is a power supply circuit especially designed for automotive applications. The device is based on Infineon’s power technology SPT® which allows bipolar and CMOS control circuitry to be integrated with DMOS power devices on the same monolithic circuitry. The TLE 6365 G contains a buck converter and a power on reset feature to start up the system. The very small P-DSO-8-3 SMD package meets the application requierements. It delivers a precise 5V fully short circuit protected output voltage. Furthermore, the build-in features like under- and overvoltage lockout for supply- and output-voltage and the overtemperature shutdown feature increase the reliability of the TLE 6365 G supply system. Data Sheet Rev. 1.7 1 2003-06-02 TLE 6365 1.2 Pin Definitions and Functions Pin No Symbol Function 1 R Reference Input; an external resistor from this pin to GND determines the reference current and so the oscillator / switching frequency 2 RO Reset Output; open drain output from reset comparator with an internal pull up resistor 3 BUC Buck-Converter Compensation Input; output of internal error amplifier; for loop-compensation and therefore stability connect an external R-C-series combination to GND. 4 GND Ground; analog signal ground 5 VCC Output Voltage Input; feedback input (with integrated resistor devider) and logic supply input; external blocking capacitor necessary 7 BUO Buck Converter Output; source of the integrated power-DMOS 6 BDS Buck Driver Supply Input; voltage to drive the buck converter powerstage 8 VS Supply Voltage Input; buck converter input voltage; external blocking capacitor necessary. Pin Configuration R 1 8 VS RO 2 7 BUO BUC 3 6 BDS GND 4 5 VCC P-DSO-8-3 Figure 1 Pin Configuration (top view) Data Sheet Rev. 1.7 2 2003-06-02 TLE 6365 1.3 Block Diagram VS 8 Biasing and VREF BUC 6 Buck Converter 3 7 TLE 6365 G R 1 Reference Current Generator and Oscillator Undervoltage Reset Generator 4 Figure 2 Vinternal 5 2 BDS BUO VCC RO GND Block Diagram Data Sheet Rev. 1.7 3 2003-06-02 TLE 6365 1.4 Absolute Maximum Ratings Parameter Symbol Limit Values min. max. Unit Remarks Voltages Supply voltage VS – 0.3 46 V Buck output voltage VBUO –1 46 V Buck driver supply voltage VBDS – 0.3 55 V Buck compensation input voltage VBUC – 0.3 6.8 V Logic supply voltage VCC – 0.3 6.8 V Reset output voltage VRO – 0.3 6.8 V Current reference voltage VR – 0.3 6.8 V ESD-Protection (Human Body Model; R=1,5kΩ; C=100pF) all pins to GND VHBM –2 2 kV Tj Tstg – 40 150 °C – – 50 150 °C – Temperatures Junction temperature Storage temperature Note: Stresses above those listed here may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Data Sheet Rev. 1.7 4 2003-06-02 TLE 6365 1.5 Operating Range Parameter Symbol Limit Values min. max. Unit Remarks Supply voltage VS – 0.3 40 V Supply voltage VS 5 35 V VS increasing Supply voltage VS 4.5 36 V VS decreasing Supply voltage VS – 0.3 4.5 V Buck-Converter OFF Buck output voltage VBUO – 0.6 40 V Buck driver supply voltage VBDS – 0.3 50 V Buck compensation input voltage VBUC 0 3.0 V Logic supply voltage VCC 4.0 6.2 V Reset output voltage VRO – 0.3 VCC +0.3 V Current reference voltage VCREF 0 1.23 V Junction temperature Tj – 40 150 °C 180 K/W Thermal Resistance Junction ambient Data Sheet Rev. 1.7 Rthj-a 5 – 2003-06-02 TLE 6365 1.6 Electrical Characteristics 8V< VS < 35V; 4.75V< VCC