E522.10 ELMOS | Alldatasheet

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Technical content

Features

Applications

Typical Application Circuit ÿ Wide input voltage range 3.8V to 40V ÿ Defined VIN Reset at typ. 2.85V ÿ Adjustable output voltage with either 800mV or 200mV internal reference voltage ÿ Application output currents up to 2A ÿ Up to >90% efficiency ÿ Overtemperature protection ÿ Integrated VIN undervoltage detection with hysteresis ÿ Precise ON threshold for programmable VIN voltage supervision ÿ Integrated IDLE detection ÿ Ultra low IDLE quiescent current of typ. 15μA ÿ Low sleep current of typ. 10μA ÿ High-voltage, power-good, open-drain output for over- and undervoltage detection ÿ Open-load stable regulation and 100% duty cycle capability without external compensation network ÿ Adaptive operation frequency up to 500kHz ÿ Battery driven applications ÿ Simple switched-mode LED controllers ÿ Always-On supply for μController ÿ Energy efficient design in automotive environment ÿ Cascaded power supplies with startup sequencing ÿ Junction temperature range -40°C to +160°C General Description E522.10 is a low-cost, easy-to-use step down converter suitable for automotive and industrial/consumer en- vironment (QFN20L4 and SO8EP) at elevated junction temperatures up to +160°C. Overtemperature protec- tion is available for a typical junction temperature of +185°C. It provides resistor programmable output volt- age based on internal 800mV reference, also support- ing current regulation topologies (e.g. LED drivers) by providing internal 200mV reference. Low current consumption of typ. only 10μA during sleep mode are provided. Integrated light-load detec- tion can automatically switch current consumption to only 15μA with active output regulation. The versa- tile high-voltage power-good signal provides under- or overvoltage information. Utilizing fast adaptive frequency operation (pulse frequency modulation scheme) from 0Hz up to typ. 500kHz allows best possible line- and load-transient response without the need of external compensation networks. Regulation is open-load stable and allows 100% duty cycle without bootstrap capacitance. Integrated foldback overcurrent protection limits input currents during startup and in case of output short circuit.

Ordering Information

Ordering No.: Wettable flanks PackageYes No E52210A52C  QFN20L4 E52210A52CXX2  QFN20L4 E52210A80D  SOIC8EP OCP E522.10 SENSE LLXT D ROCP CIN COUT1 PGOOD VOUT PGOOD LXT VIN GND ON SELREF COUT2 IN RSENSE1 RSENSE2 CSENSE RPGOOD OCP E522.10 SENSE LLXT DROCP CIN COUT PGOOD PGOOD LXT VIN ON SELREF GND IN RSENSE1 RPGOOD Voltage regulator topology Current regulator topology (e.g. LED driver)

Note: Elmos Semiconductor AG (below Elmos) reserves the right to make changes to the product contained in this publication without notice. Elmos assumes no responsibility for the use of any circuits described herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. While the information in this publication has been checked, no responsibility, however, is assumed for inaccuracies. Elmos does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of a life-support system or to signifi cantly affect its safety or effectiveness. Products are not authorized for use in such applications. Copyright © 2018 Elmos Reproduction, in part or whole, without the prior written consent of Elmos, is prohibited. Headquarters Elmos Semiconductor AG Heinrich-Hertz-Str. 1

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