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The PTHxx060Y are a series of ready-to-use switching regulator modules from Texas Instruments designed specifically for bus termination in DDR and QDR memory applications. Operating from either a 3.3-V, 5-V or 12-V input, the modules generate a VTT output that will source or sink up to 10 A of current to accurately track their VREF input. VTT is the required bus termination supply voltage, and VREF is the reference voltage for the memory and chipset bus receiver comparators. VREF is usually set to half the VDDQ power supply voltage.
Both the PTHxx060Y series employs an actively switched synchronous rectifier output to provide state-of-the-art stepdown switching conversion. The products are small in size (1 in × 0.62 in), and are an ideal choice where space, performance, and high efficiency are desired, along with the convenience of a ready-to-use module.
Operating features include an on/off inhibit and output over-current protection (source mode only). The on/off inhibit feature allows the VTT bus to be turned off to save power in a standby mode of operation. To ensure tight load regulation, an output remote sense is also provided. Package options include both throughhole and surface mount configurations.
PTH03060YAH Maximum Ratings
UNIT
VREF Control input voltage
0.3 V to Vin+03 V
TA Operating temperature range
Over VIN range
40°C to 85°C(1)
Twave
Wave solder temperature
Surface temperature of module body or pins (5 seconds)
PTHXX010YAH
260°C (2)
Treflow
Solder reflow temperature
Surface temperature of module body or pins
PTHXX010YAS
235°C (2)
PTHXX010YAZ
260°C (2)
Ts Storage temperature
40°C to 125°C
Mechanical shock
500 G
Mechanical vibration
Mil-STD-883D, Method 2007.2 20-2000 Hz
20 G
Weight
3.7 grams
Flammability
Meets UL 94V-O
PTH03060YAH Features
• VTT Bus Termination Output • 57 W/in3 Power Density (Output Tracks the System VREF) • Safety Agency Approvals: • 10 A Output Current UL/cUL60950, EN60950, VDE • 3.3-V, 5-V or 12-V Input Voltage • Point-of-Load Alliance (POLA™) Compatible • DDR and QDR Compatible • On/Off Inhibit (for VTT Standby) • Undervoltage Lockout • Operating Temperature: 40°C to 85°C • Efficiencies up to 91% • Output Overcurrent Protection (Non-Latching, Auto-Reset)