TS2576 3A / 52KHz Buck Switching Regulator 1/8 Version: B07 TO-220-5L TO-263-5L (D2PAK) General Description TS2576 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 adjustable output version. TS2576 series operates at a switching frequency of 52kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. It substantially not only reduces the area of board size but also the size of heat sink, and in some cases no heat sink is required. The ±4% tolerance on output voltage within specified input voltages and output load conditions is guaranteed. Also, the oscillator frequency accuracy is within ±10%. External shutdown is included. Featuring 70ìA (typical) standby current. The output switch includes cycle-bycycle current limiting, as well as thermal shutdown for full protection under fault conditions. Ordering Information Part No. Package Packing TS2576CZ5xx C0 TO-220-5L 50pcs / Tube TS2576CM5xx RN TO-263-5L 800pcs / 13” Reel Note: Where xx denotes voltage option, available are 50= 5.0V 33= 3.3V Leave blank for adjustable version Features œ Output Voltage: 3.3V, 5V & Adjustable version œ Adjustable Output Voltage Range 1.23V~37V ±4% œ 52kHz fixed switching frequency œ Voltage Mode Non-synchronous PWM control œ Thermal Shutdown and Current Limit Protection œ ON/OFF Shutdown Control Input œ High Efficiency œ Short Circuit Protect (SCP) œ Operating Voltage Can be up to 40V œ Output Load Current 3A œ Low Power Standby Mode œ P+ Product Enhancement Tested Application œ Simple High-efficiency Step down Regulator œ On-Card Switching Regulators œ Positive to Negative Converter Absolute Maximum Rating Parameter Symbol Limit Unit Maximum Supply Voltage VCC +45 V Recommend Operating Supply Voltage VOP 4.5 to 40 V SW, EN Pin Input Voltage VSW, VEN -0.3 to +25 V Feedback Pin Voltage VFB -0.3 to +25 V Power Dissipation PD Internally Limited W Output Voltage to Ground VOUT -1 V Storage Temperature Range TST -65 to +150 oC Operating Temperature Range TOP -40 to +125 oC ESD Susceptibility (HBM) 2 kV Pin Definition: 1. Input 2. SW Output 3. Ground 4. Feedback 5. Enable

TS2576 3A / 52KHz Buck Switching Regulator 2/8 Version: B07 Thermal Information Parameter Symbol Maximum Unit TO-220-5L 2 Thermal Resistance (Junction to Case) TO-263-5L .JC 2 oC/W TO-220-5L 65 (note 1) Thermal Resistance (Junction to Ambient) TO-263-5L .JA 50 (note 2) oC/W Note1: .JA is measured on the PCB with minimum copper area. Note2: .JA is measured with the PCB copper area (need connect to GROUND pins) of approximately 0.5 in2 Electrical Specifications (All Output Voltage Version) (Ta = 25oC unless otherwise noted, VIN=12V for 3.3V, 5V, Adjustable version. ILOAD =0.5A) Parameter Symbol...

TS2576 3A / 52KHz Buck Switching Regulator 3/8 Version: B07 Block Diagram

TS2576 3A / 52KHz Buck Switching Regulator 4/8 Version: B07 Typical Application Circuit 1. Adjustable Output Voltage Version 2. Fixed Output Voltage Version 3. Adjustable Output Voltage Version with Delayed Startup

TS2576 3A / 52KHz Buck Switching Regulator 5/8 Version: B07 Pin Function Description Vcc This is the positive input supply for the IC switching regulator. A suitable input bypass capacitor must be presented at this pin to minimize voltage transients and to supply the switching currents needed by the regulator. Ground Circuit ground SW Output Internal switch. The voltage at this pin switches between (+Vcc – Vsat) and approximately – 0.5V, with a duty cycle of approximately Vout / Vcc. To minimize coupling to sensitive circuitry, the PC board copper area connected to this pin should be minimized....

TS2576 3A / 52KHz Buck Switching Regulator 6/8 Version: B07 TO-220-5L Mechanical Drawing Marking Diagram Y = Year Code M = Month Code (A=Jan, B=Feb, C=Mar, D=Apl, E=May, F=Jun, G=Jul, H=Aug, I=Sep, J=Oct, K=Nov, L=Dec) L = Lot Code XXX = Voltage Code (3.3=3.3V, 5.0=5V) = Package Code for Adjustable type (CZ5 = TO-220-5L) TO-220-5L DIMENSION DIM MILLIMETERS INCHES MIN MAX MIN MAX A 10.00 10.50 0.394 0.413 B 3.240 4.440 0.128 0.175 C 2.440 2.940 0.096 0.116 D 0.260 1.020 0.010 0.040 E 1.570 1.830 0.062 0.072 F 13.31 14.13 0.524 0.556 G 4.475 5.225 0.176 0.206 H 1.170 1.370 0.046 0.054 I 27.60 29.44...

TS2576 3A / 52KHz Buck Switching Regulator 7/8 Version: B07 TO-263-5L Mechanical Drawing Marking Diagram Y = Year Code M = Month Code (A=Jan, B=Feb, C=Mar, D=Apl, E=May, F=Jun, G=Jul, H=Aug, I=Sep, J=Oct, K=Nov, L=Dec) L = Lot Code XXX = Voltage Code (3.3=3.3V, 5.0=5V) = Package Code for Adjustable type (CM5 = TO-263-5L) TO-263-5L DIMENSION DIM MILLIMETERS INCHES MIN MAX MIN MAX A 9.70 10.54 0.382 0.415 B 14.60 15.87 0.575 0.625 C 0.69 0.94 0.027 0.037 D 1.524 2.032 0.060 0.080 E 4.30 4.70 0.169 0.185 F 1.22 1.40 0.048 0.055 G 2.24 2.82 0.088 0.111 H 0.36 0.56 0.014 0.022 I 8.50 9.20 0.330 0.362...

TS2576 3A / 52KHz Buck Switching Regulator 8/8 Version: B07 Notice Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, to any intellectual property rights is granted by this document. Except as provided in TSC’s terms and conditions of sale for such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty, relating...