The TPS40222DRPRG4 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 TPS40222DRPRG4 provides many features with a minimum of external components.
The TPS40222DRPRG4 operates at 1.25 MHzand supports up to 1.6-A output loads. The output voltage can be programmed to as low as 0.8 V.The TPS40222DRPRG4 utilizes pulse-by-pulse current limit as well as frequency foldback to protect the converter during a catastrophic short circuited output condition.
Feature
- 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
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 MHzand 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.
