TS2596SCS RLG

TS2596S Taiwan Semiconductor 2A, 24V, 150kHz Step-Down DC-DC Converter DESCRIPTION FEATURES TS2596S Series are step-down switching regulators ● Output Voltage: 5V & Adjustable version with all required active functions. It is capable of driving ● Adjustable Output Voltage 1.23V~19.5V ±4% 2A load with excellent line and load regulations. These ● 150kHz ±15% fixed switching frequency devices are available in fixed output voltages of 5V, ● Voltage Mode Non-synchronous PWM control and an adjustable output version. TS2596S series ● Thermal Shutdown and Current Limit Protection ● ON/OFF Shutdown Control Input ● Soft-Start (SS) Function ● Short Circuit Protect (SCP) ● Operating Voltage Can be up to 24V ● Output Load Current 2A ● Low Power Standby Mode operates at a switching frequency of 150kHz 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 APPLICATION oscillator frequency accuracy is within ±10%. External shutdown is included. Featuring 70μA (typical) standby current. The output switch includes cycle-by-cycle ● Simple High-efficiency Step down Regulator ● On-Card Switching Regulators current limiting, as well as thermal shutdown for full protection under fault conditions. SOP-8 Pin Definition: 1. Input 2. SW Output 3. Feedback 4. Enable 8. GND 7. GND 6. GND 5. GND Notes: MSL 3 (Moisture Sensitivity Level) per J-STD-020 ABSOLUTE MAXIMUM RATINGS (TA = 25°C unless otherwise specified) (Note 1) PARAMETER SYMBOL LIMIT UNIT Supply Voltage VCC +28 V Operating Voltage Range VOP +4.5 to +24 V SW, EN Pin Input Voltage VSW , VEN -0.3 to VCC V Feedback Pin Voltage VFB -0.3 to VCC V Power Dissipation PD Internally Limited W VOUT -1 Output Voltage to Ground Storage Temperature Range THERMAL PERFORMANCE -65 to +150 TOP -40 to +125 o SYMBOL RθJC RθJA LIMIT 15 70 TST Operating Temperature Range V o C C (Note 3) PARAMETER Thermal Resistance Junction to Case Thermal Resistance Junction to Ambient 1 UNIT °C/W °C/W Version: C1602 TS2596S Taiwan Semiconductor ELECTRICAL SPECIFICATIONS (TA = 25°C unless otherwise specified) PARAMETER SYMBOL Output Feedback ADJ Efficiency VFB η Output Feedback 5V VFB CONDITION MIN 4.5V≤ VIN ≤24V 1.193 0.2A≤ ILOAD ≤2A 1.180 VIN =12V, ILOAD =2A 76 7V≤ VIN ≤24V 4..80 0.2A≤ ILOAD ≤2A 4.75 TYP 1.23 -5 MAX 1.267 1.280 -5.20 5.25 UNIT V % V Efficiency η VIN =12V, ILOAD =2A 84 -- -- % Feedback Bias Current IFB VFB =1.3V (Adj version only) -- -10 -100 nA 127 150 173 kHz -- 3 -- ms 2.4 -- -- A -- 60 -- kHz -- 1.15 1.50 V Oscillator Frequency FOSC Soft-Start Time TSS Current Limit ICL Oscillator Frequency of Short Circuit Protect Saturation Voltage FSCP VSAT Rising edge of EN on to ICL Pear Current, no outside circuit VFB =0V force driver on When current limit occurred and o VFB