CM2596SCN263

CM2596S 3A STEP DOWN VOLTAGE REGULATOR GENERAL DESCRIPTION The CM2596S series are step-down switching regulators with all required active functions. It is capable of driving 3A load with excellent line and load regulations. These devices are available in fixed output voltages of 3.3V, 5V, and an adjustable output version. The CM2596S series offers a high-efficiency replacement for popular three-terminal linear regulators. Also it requires a minimum number of external components. It substantially not only reduces the area of board size but also the size of the heat sink, and in some cases no heat sink is required. ±4% tolerance on output voltage within specified input voltages and output load conditions is guaranteed. Also, the oscillator frequency accuracy is within ±15%. External shutdown is included, featuring 150μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions. FEATURES Guaranteed 3A output current 3.3V, 5V, and adjustable versions Wide input voltage range, up to 40V Internal oscillator of 150KHz fixed frequency Wide adjustable version output voltage range, from 1.23V to 37V±4% max over line and load conditions Low standby current, typ. 150μA, at shutdown mode Requires only 4 external components Thermal shutdown and current limit protection Requires only 4 external components Excellent line and load regulation specifications TTL shutdown capability APPLICATIONS LCD Monitors ADD-ON Cards Switching Regulators High Efficiency Step-Down Regulators Efficient Pre-regulator for Linear Regulators ORDERING INFORMATION Package Type TO-220 CM2596SSCN220 CM2596SZJCN220 CM2596SCN220 CM2596SGSCN220 CM2596SGZJCN220 CM2596SGCN220 CM2596SGCN220B TO-263 CM2596SSCN263 CM2596SZJCN263 CM2596SCN263 CM2596SGSCN263 CM2596SGZJCN263 CM2596SGCN263 Output Voltage 3.3V 5.0V ADJ. 3.3V 5.0V ADJ. ADJ CM2596S X XXX Lead Free Blank: Normal G: Lead Free package Output Voltage C: Adjustable SC: 3.3V ZJC: 5V Package Type N: TO package Package 220:TO-220 263:TO-263 2006/11/27 Rev 1.0 Champion Microelectronic Corporation Page 1 CM2596S 3A STEP DOWN VOLTAGE REGULATOR PIN CONFIGURATION TO-220 Top View TO-220B Top View TO-263 Top View ENABLE FB GND V OUT GND ENABLE 5 4 3 2 1 V IN FB V OUT V IN 12 3 4 5 ABSOLUTE MAXIMUM RATINGS Input Voltage (VPOWER) …….………………………………………….……. +45V ENABLE Pin Input Voltage ….…………………………………. –0.3V ≦V≦25V Storage Temperature ………………………………….….…... -65℃ to +150℃ Lead Temperature (10 sec.) ……..……………………..….…………….... 260℃ Operating Temperature ……..……………………..….……………....... -40℃ to +125℃ POWER DISSIPATION TABLE Package ΘJA (℃/W) Derating factor (mW/℃) TA >= 25℃ TO-220(B) TO-263 28 23 22.2 22.2 TA