IR3831MTRPBF Infineon

PD60363 IR3831MPbF TM SupIRBuck HIGHLY EFFICIENT INTEGRATED SYNCHRONOUS BUCK REGULATOR FOR DDR APPLICATIONS Features Description Wide Input Voltage Range 1.0V to 16V TM The IR3831 SupIRBuck is an easy-to-use, fully Wide Output Voltage Range 0.6V to 0.9*Vin integrated and highly efficient DC/DC regulator. Continuous 8A Load Capability The MOSFETS co-packaged with the on-chip Integrated Bootstrap-diode PWM controller make IR3831 a space-efficient High Bandwidth E/A for excellent transient solution, providing accurate power delivery for performance DDR memory applications. Programmable Switching Frequency up to 1.5 MHz IR3831 is configured to generate termination Programmable Over Current Protection (Hiccup) voltage (VTT) for DDR memory applications. PGood output Programmable Soft-Start IR3831 offers programmability of start up time, Enable Input with Voltage Monitoring Capability switching frequency and current limit while Enhanced Pre-Bias Start-up operating in wide input and output voltage range. Vp input for DDR Tracking applications The switching frequency is programmable from o o -40 C to 125 C operating junction temperature 250kHz to 1.5MHz for an optimum solution. Thermal Protection 5mm x 6mm Power QFN Package, 0.9 mm height It also features important protection functions, Lead-free, halogen-free and RoHS compliant such as Pre-Bias startup, hiccup current limit and thermal shutdown to give required system level Applications security in the event of fault conditions. Server Applications Storage Applications Embedded Telecom Systems Distributed Point of Load Power Architectures Netcom Applications 1.0V <Vin<16V 4.5V <Vcc<5.5V Enable Vin Boot Vo Vcc VDDQ SW PGood PGood OCSet Vp Fb Rt Comp PGnd SS/ SD Gnd Fig. 1. Typical application diagram 1 11/05/10 IR3831MPbF ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND unless otherwise specified) Vin . -0.3V to 25V Vcc ...... -0.3V to 8V (Note2) Boot .... -0.3V to 33V SW .. -0.3V to 25V(DC), -4V to 25V(AC, 100ns) Boot to SW ....... -0.3V to Vcc+0.3V (Note1) OCSet .. -0.3V to 30V, 30mA Input / output Pins ... -0.3V to Vcc+0.3V (Note1) PGND to GND ..... -0.3V to +0.3V Storage Temperature Range ................................... -55C To 150C Junction Temperature Range ................................... -40C To 150C (Note2) ESD Classification JEDEC Class 1C Moisture sensitivity level...JEDEC Level 3 260 C Note1: Must not exceed 8V o o Note2: Vcc must not exceed 7.5V for Junction Temperature between -10 C and -40 C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not implied. PACKAGE INFORMATION SW 5mm x 6mm POWER QFN V IN 11 PGnd 12 10 o = 35 C / W JA o = 2 C / W J-PCB 15 13 V Boot 9 CC Gnd 14 PGood Enable 8 1 4 7 23 5 6 Vp FB COMP Gnd Rt SS OCSet ORDERING INFORMATION PACKAGE PACKAGE PIN COUNT PARTS PER DESIGNATOR REEL DESCRIPTION M IR3831MTRPbF 15 4000 M IR3831MTR1PbF 15 750 2 11/05/10