TS2596S_09

TS2596S 2A / 150KHz Buck Dc-Dc Converter SOP-8 Pin Definition: 1. Input 2. SW Output 3. Feedback 4. Enable 5. 6. 7. 8. Ground General Description TS2596S Series are step-down switching regulators with all required active functions. It is capable of driving 2A load with excellent line and load regulations. These devices are available in fixed output voltages of 3.3V, 5V, and an adjustable output version. TS2596S series 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 oscillator frequency accuracy is within ±10%. External shutdown is included. Featuring 70µA (typical) standby current. The output switch includes cycle-bycycle current limiting, as well as thermal shutdown for full protection under fault conditions. Features ● ● ● ● ● ● ● ● ● ● ● Output Voltage: 3.3V, 5V & Adjustable version Adjustable Output Voltage Range 1.23V~19.5V ±4% 150KHz ±15% fixed switching frequency Voltage Mode Non-synchronous PWM control 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 Ordering Information Part No. Package Packing TS2596SCSxx RL SOP-8 2.5Kpcs / 13” Reel Note: Where xx denotes voltage option, available are 50= 5.0V 33= 3.3V Leave blank for adjustable version Application ● ● Simple High-efficiency Step down Regulator On-Card Switching Regulators Absolute Maximum Rating Parameter Supply Voltage Operating Voltage Range SW, EN Pin Input Voltage Feedback Pin Voltage Power Dissipation Output Voltage to Ground Storage Temperature Range Operating Temperature Range Symbol VCC VOP VSW, VEN VFB PD VOUT TST TOP Limit +28 +4.5 to +24 -0.3 to VCC -0.3 to VCC Internally Limited -1 -65 to +150 -40 to +125 Unit V V V V W V o o C C 1 /9 Version: B07 TS2596S 2A / 150KHz Buck Dc-Dc Converter Thermal Information Parameter Thermal Resistance* (Junction to Case) Thermal Resistance* (Junction to Ambient) Symbol ӨJC ӨJA Maximum 15 70 2 Unit o o C/W C/W Note: ӨJA is measured with the PCB copper area (need connect to GROUND pins) of approximately 1.5 in (Multi-layer) Electrical Specifications (All Output Voltage Version) (Ta = 25 C unless otherwise noted, VIN=12V for 3.3V, 5V, Adj version. ILOAD =0.2A) o Parameter Output Feedback Efficiency Output Feedback Efficiency Output Feedback Efficiency Feedback Bias Current Oscillator Frequency Soft-Start Time Current Limit Oscillator Frequency of Short Circuit Protect Saturation Voltage ON/OFF Pin Logic Input Threshold Voltage ON/OFF Pin Logic Input Current Maximum Duty Cycle (ON) Maximum Duty Cycle (OFF) Quiescent Current Standby Quiescent Current SW Pin Leakage Current SW pin = 0 SW pin = -1 5V 3.3V ADJ Symbol VFB η VFB η VFB η IFB FOSC TSS ICL FSCP VSAT VIL VIH IL IH DC IQ ISTBY Test Condition 4.5V≤ VIN ≤24V 0.2A≤ ILOAD ≤2A VIN =12V, ILOAD =2A 4.75V≤ VIN ≤24V 0.2A≤ ILOAD ≤2A VIN =12V, ILOAD =2A 7V≤ VIN ≤24V 0.2A≤ ILOAD ≤2A VIN =12V, ILOAD =2A VFB =1.3V (Adj version only) Rising edge of EN on to ICL Pear Current, no outside circuit VFB =0V force driver on When current limit occurred and VFB