TS2596CM550 RNG

TS2596 Taiwan Semiconductor 3A / 150kHz Step-Down DC-DC Converter GENERAL DESCRIPTION FEATURES The TS2596 Series are step-down switching regulators ● Output voltage: 3.3V, 5V & adjustable version with all required active functions. It is capable of driving ● Adjustable output voltage range 1.23V~38.5V 3A load with excellent line and load regulations. These ● 150kHz fixed switching frequency devices are available in fixed output voltages of 3.3V, 5V, ● Voltage mode Non-synchronous PWM control and an adjustable output version. ● Thermal shutdown and current limit protection The TS2596 series operates at a switching frequency of ● ON/OFF shutdown control input 150kHz thus allowing smaller sized filter components than ● Short circuit protect (SCP) what would be needed with lower frequency switching ● Operating voltage can be up to 40V regulators. It substantially not only reduces the area of ● Output load current 3A board size but also the size of heat sink, and in some ● Low power standby mode cases no heat sink is required. The ±4% tolerance on frequency accuracy is within ±10%. External shutdown is ● Built-in switching transistor on chip ● Compliant to RoHS Directive 2011/65/EU and in accordance to WEEE 2002/96/EC. ● Halogen-free according to IEC 61249-2-21 included. Featuring 100μA (typical) standby current. The APPLICATION output switch includes cycle-by-cycle current limiting, as ● Simple High-efficiency Step down Regulator well as thermal shutdown for full protection under fault ● On-Card Switching Regulators conditions. ● Positive to Negative Converter output voltage within specified input voltages and output load conditions is guaranteed. Also, the oscillator 2 TO-263-5L (D PAK) Pin Definition: 1. Input 2. SW Output 3. Ground 4. Feedback 5. Enable Notes: Moisture sensitivity level: level 3. Per J-STD-020 TYPICAL APPLICATIN CIRCUIT Adjustable Output Voltage Version VOUT = VFB × (1 + R1 ), VFB = 1.23V, R2 = 0.7k ~ 3k R2 1 Version: G1608 TS2596 Taiwan Semiconductor ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL LIMIT UNIT Maximum Supply Voltage VCC +45 V Recommend Operating Supply Voltage VOP +4.5 to +40 V VSW , VEN -0.3 to +40 V Feedback Pin Voltage VFB -0.3 to +12 V Power Dissipation PD Internally Limited W VOUT -1 V Storage Temperature Range TST -65 ~ +150 °C Operating Temperature Range TOP -40 ~ +125 °C 2 kV SYMBOL LIMIT UNIT Junction to Case Thermal Resistance RӨJC 2 °C/W Junction to Ambient Thermal Resistance RӨJA 50 SW, EN Pin Input Voltage Output Voltage to Ground ESD Susceptibility (HBM) THERMAL INFORMATION PARAMETER °C/W 2 Note: RӨJA is measured with the PCB copper area (need connect to GROUND pins) of approximately 1.5 in (Multi-layer) ELECTRICAL CHARACTERISTICS (VIN = 12V for 3.3V, 5V, Adjustable Version, ILOAD = 0.3A, TA = 25°C unless otherwise noted) PARAMETER CONDITION Output Feedback ADJ Efficiency Output Feedback 3.3V 4.5V ≤ VIN ≤ 40V 0.2A ≤ ILOAD ≤ 3A VIN = 12V, ILOAD = 3A, VOUT = 5V 4.75V ≤ VIN ≤ 40V 0.2A ≤ ILOAD ≤ 3A Efficiency VIN = 12V, ILOAD = 3A Output Feedback 7V ≤ VIN ≤ 40V 0.2A ≤ ILOAD ≤ 3A 5V SYMBOL MIN TYP MAX UNIT VFB 1.180 1.23 1.280 V η -- 77 -- % VFB 3.135 3.3V 3.465 V η -- 75 -- % VFB 4.75 5 5.25 V Efficiency VIN = 12V, ILOAD = 3A η -- 80 -- % Feedback Bias Current VFB =1.3V (Adj version only) IFB -- 10 100 nA FOSC 127 150 173 kHz Oscillator Frequency Soft-Start Time Rising edge of EN on to ICL TSS -- 3 -- ms Current Limit Pear Current, no outside circuit VFB =0V force driver on ICL 3.3 -- -- A When current limit occurred o and VFB