IR3629MTRPBF Infineon

Data Sheet No. PD94726 IR3629/IR3629A MPbF HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER WITH POWER GOOD OUTPUT Description Features Internal 600kHz Oscillator (300kHz A version) The IR3629/IR3629A is a PWM controller Operates with Single 5V or 12V Supply designed for high performance synchronous Buck Programmable Over Current Protection DC/DC applications. The IR3629/IR3629A drives Hiccup Current Limit Using MOSFET R DS(on) a pair of external N-MOSFETs using a fixed sensing 600kHz (300kHz A version) switching frequency Precision Reference Voltage (0.6V) allowing the use of small external components. Programmable Soft-Start Programmable PGood output The output voltage can be precisely regulated Pre-Bias Start-up using the internal 0.6V reference voltage for low Thermal Protection voltage applications. Protection such as Pre-Bias 12-Lead MLP Package startup, hiccup current limit and thermal shutdown Applications provide the required system level security in the Distributed Point-of-Loads event of fault conditions. Embedded Systems Storage Systems DDR Applications Graphics Cards Computing Peripheral Voltage Regulators General DC-DC Converters Fig. 1: Typical application Circuit ORDERING INFORMATION PKG PACKAGE PIN PARTS PARTS T&R DESIG DESCRIPTION COUNT PER TUBE PER REEL ORIENTATION M IR3629/IR3629AMPBF 12 122 ------- M IR3629/IR3629AMTRPBF 12 -------- 3000 Figure A 11/29/2007IR3629/IR3629A MPbF ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND) Vcc Supply Voltage ................................................ -0.5V to 16V Vc Supply Voltage .. -0.5V to 30V PGood -0.5V to 16V Fb, Comp, SS .... -0.3V to 3.5V OCset 10mA AGnd to PGnd ... -0.3V to +0.3V Storage Temperature Range ..................................... -65C To 150C Operating Junction Temperature Range ................... -40C To 150C ESD Classification .. JEDEC, JESD22-A114 o Moisture Sensitivity Level . JEDEC Level 2 260 C Caution: Stresses beyond those listed under Absolute Maximum Rating 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 is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Package Information 1 12 PGood OCSet 2 11 VCC SS/SD 10 LDrv 3 Gnd Exposed Pad 4 9 PGnd Comp 5 HDrv 8 Fb 6 VC 7 Vsns 12-Lead MLPD, 3x4mm o = 30 C/W * JA o = 2 C/W JC *Exposed pad on underside is connected to a copper pad through vias for 4-layer PCB board design 11/29/2007 2