The TPS40222 is a fixed-frequency, current-mode, non-synchronous buck converter optimized for applications powered by a 5-V distributed source. With internally determined operating frequency, soft-start time, and control loop compensation, the TPS40222 provides many features with a minimum of external components.

The TPS40222 operates at 1.25 MHz and supports up to 1.6-A output loads. The output voltage can be programmed to as low as 0.8 V. The TPS40222 utilizes pulse-by-pulse current limit as well as frequency foldback to protect the converter during a catastrophic short circuited output condition.

• Input Voltage Range 4.5 VDC to 8 VDC
• Output Voltage (0.8 V to 90% VIN)
• 0 A to 1.6 A Current Capability
• Fixed 1.25-MHz Switching Frequency
• Reference 0.8 V ±1%
• Internal 250 m N-Channel MOSFET Switch
• Current Mode Control with Internal Slope Compensation
• Internal Soft-Start
• Internal Loop Compensation
• Short Circuit Protection
• Thermal Shutdown
• High Efficiency Up to 92%
• Small 3 mm × 3 mm SON Package
• APPLICATIONS
  • Disk Drives
  • Set Top Box
  • Point of Load Power
  • ASIC Power Supplies

• Vin (Min) (V)
• 4.5
• Vin (Max) (V)
• 8
• Vout (Min) (V)
• 0.8
• Vout (Max) (V)
• 7
• Iout (Max) (A)
• 1.6
• Iq (Typ) (uA)
• 1000
• Switching frequency (Min) (kHz)
• 1250
• Switching frequency (Max) (kHz)
• 1250
• Features
• UVLO Fixed
• Rating
• Catalog
• Regulated outputs (#)
• 1
• Control mode
• Current Mode
• Duty cycle (Max) (%)
• 90

TPS40222的完整型号有：TPS40222DRPR、TPS40222DRPT，以下是这些产品的关键参数及官网采购报价：

TPS40222DRPR，工作温度：-40 to 125，封装：VSON (DRP)-6，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS40222DRPR的批量USD价格：.78（1000+）

TPS40222DRPT，工作温度：-40 to 125，封装：VSON (DRP)-6，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS40222DRPT的批量USD价格：.915（1000+）

TPS40222 Unencrypted PSpice Model Package (Rev. D)

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