The PTN78020 is a series of high-efficiency, step-down integrated switching regulators (ISRs), that represent the third generation in the evolution of high-performance power modules designed for industrial use. The wide-input voltage range makes these modules suitable for a variety of applications that operate off 12-V, 24-V, and 28-V dc power. In new designs they should be considered in place of the PT6620, PT6650, PT6680, and PT6880 series of single in-line pin (SIP) products. The PTN78020 is smaller and lighter than its predecessors, and has either similar or improved electrical performance characteristics. The caseless, double-sided package has excellent thermal characteristics, and is compatible with TI's roadmap for RoHS and lead-free compliance.

Operating from a wide-input voltage range, the PTN78020 provides high-efficiency, step-down voltage conversion for loads of up to 6 A. The output voltage is set using a single, external resistor. The PTN78020W may be set to any value within the range, 2.5 V to 12.6 V, and the PTN78020H from 11.85 V to 22 V. The output voltage of the PTN78020W can be as little as 2 V lower than the input, allowing operation down to 7 V, with an output voltage of 5 V. The output voltage of the PTN78020H can be as little as 3 V lower than the input, allowing operation down to 15 V, with an output voltage of 12 V.

The PTN78020 has undervoltage lockout, an integral on/off inhibit, and includes an output current limit and overtemperature protection.

• 6-A Output Current
• Wide-Input Voltage(7 V to 36 V) / (15 V to 36 V)
• Wide-Output Voltage Adjust (2.5 V to 12.6 V) / (11.85 V to 22 V)
• High Efficiency (Up to 96%)
• On/Off Inhibit
• Undervoltage Lockout
• Output Current Limit
• Overtemperature Shutdown
• Operating Temperature: -40°C to 85°C
• Surface Mount Package Available
• APPLICATIONS
  • General-Purpose, Industrial Controls, HVAC Systems, Test and Measurement, Medical Instrumentation, AC/DC Adaptors, Vehicles, Marine, and Avionics

• Iout (Max) (A)
• 6
• Vin (Min) (V)
• 7
• Vin (Max) (V)
• 36
• Vout (Min) (V)
• 2.5
• Vout (Max) (V)
• 12.6
• Soft start
• Fixed
• Features
• Enable, Tracking
• Regulated outputs (#)
• 1
• Switching frequency (Max) (kHz)
• 660
• Switching frequency (Min) (kHz)
• 440
• Duty cycle (Max) (%)
• 100
• Topology
• Buck

PTN78020W的完整型号有：PTN78020WAD、PTN78020WAH、PTN78020WAS、PTN78020WAZ、PTN78020WAZT，以下是这些产品的关键参数及官网采购报价：

PTN78020WAD，工作温度：-40 to 85，封装：Through-Hole Module (EUK)-7，包装数量MPQ：20个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SN，TI官网PTN78020WAD的批量USD价格：15.653（1000+）

PTN78020WAH，工作温度：-40 to 85，封装：Through-Hole Module (EUK)-7，包装数量MPQ：20个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SN，TI官网PTN78020WAH的批量USD价格：15.653（1000+）

PTN78020WAS，工作温度：-40 to 85，封装：Surface Mount Module (EUL)-7，包装数量MPQ：20个，MSL 等级/回流焊峰值温度：Level-1-235C-UNLIM/Level-3-260C-168HRS，引脚镀层/焊球材料：SNPB，TI官网PTN78020WAS的批量USD价格：15.653（1000+）

PTN78020WAZ，工作温度：-40 to 85，封装：Surface Mount Module (EUL)-7，包装数量MPQ：20个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：SNAGCU，TI官网PTN78020WAZ的批量USD价格：15.653（1000+）

PTN78020WAZT，工作温度：-40 to 85，封装：Surface Mount Module (EUL)-7，包装数量MPQ：200个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：SNAGCU，TI官网PTN78020WAZT的批量USD价格：15.653（1000+）

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