TS2596S

TS2596S 2A / 150KHz Buck Dc-Dc Converter T O- 2 5 2 - 5 L (PPAK) Pin Definition: 1. Input 2. SW Output 3. Ground 4. Feedback 5. Enable 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 devic es are available in fixed output voltages of 3.3V, 5V, and an adjustable output version. TS2596S series operates at a switching fr equency of 150kHz thus allowing s maller sized filter components than what would be needed with low er frequency switching regulators. It subs tantially 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 70µ A (typical) standby current. The output switch includes cycle-bycycle current limiting, as well as ther mal shutdown for full protec tion under fault conditions. Features ● ● ● ● ● ● ● ● ● ● ● Output Voltage: 3.3V, 5V & Adjus table version Adjus table Output Voltage Range 1.23V~19.5V ± 4% 150KHz ±15% fixed switching frequency Voltage Mode Non-synchronous PW M control Thermal Shutdown and C urrent Limit Protection ON/OFF Shutdown Control Input Soft-start (SS) Func tion Shor t Circuit Protec t ( SC P) Operating Voltage C an be up to 24V Output Load Current 2A Low Power Standby Mode Ordering Information Part No. Package Packi ng TS2596SC P5xx RO TO-252-5L 2.5Kpcs / 13” Reel TS2596SC Sxx RL SOP-8 2.5Kpcs / 13” Reel Note: W here xx denotes voltage option, available are 50= 5.0V 33= 3.3V Leave blank for adjus table version Application ● ● Simple High-efficiency Step dow n Regulator On-Card Switching Regulators Absolute Maximum Rating Parameter Supply Voltage Operating Voltage R ange 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 +2 8 +4.5 to +24 -0.3 to VCC -0.3 to VCC Inter nally Limited -1 - 65 t o + 150 - 40 t o + 125 Unit V V V V W V o o C C 1/10 Version: A07 TS2596S 2A / 150KHz Buck Dc-Dc Converter Thermal Information Parameter Thermal R esistance* (Junc tion to Case) Thermal R esistance* (Junc tion to Ambient) TO-252-5L SOP-8 TO-252-5L SOP-8 Symbol ӨJ C ӨJ A Maxi mum 10 15 50 70 2 Unit o C/W C/W o Note: ӨJA is measured with the PC B copper area (need connect to GROUN D 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 Shor t 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 C ur r ent 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 Conditi on 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 outs ide c ircuit VFB =0V force driver on When current limit occurred and o VFB