The TPS568215OARNNR is TI's smallest monolithic 8-A synchronous buck converter with an adaptive on-time D-CAP3 control mode. The device integrates low RDS(on) power MOSFETs that enable high efficiency and it offers ease-of-use with minimal external component count for space-conscious power systems. Key features include a very accurate reference voltage, fast load transient response, Out-of-Audio mode, adjustable current limit and no requirement for external compensation. A forced continuous conduction mode helps meet tight voltage regulation accuracy requirements for performance DSPs and FPGAs. The TPS568215OARNNR is available in a thermally enhanced 18-pin HotRod QFN package and is designed to operate from –40°C to 150°C junction temperature. TPS568215OARNNR is pin to pin compatible with TPS568215 and TPS56C215 which gives the user flexibility to pick solutions from 6A to 12A in the same footprint.
Integrated 19-mΩ and 9.4-mΩ MOSFETs
Selectable FSW of 400 kHz, 800 kHz or 1.2 MHz
Out-of-Audio Feature to Keep Switching Frequency Out of Audio Frequency Range
Adjustable Current Limit Settings with Hiccup Re-start
0.6 V ±1% Reference Voltage Across Full Temperature Range
Optional External 5-V Bias Support for Enhanced Efficiency
D-CAP3 Control Mode for Fast Transient Response
0.6 V to 5.5 V Output Voltage Range
Supports all Ceramic Capacitors
Monotonic Startup into Pre-biased Outputs
Adjustable Soft Start with a Default 1-ms Soft Start Time
–40°C to 150°C Operating Junction Temperature
Small 3.5-mm × 3.5-mm HotRod QFN Package
| Function | Step-Down | Voltage Output (Max) | 5.5V |
|---|---|---|---|
| Output Configuration | Positive | Current Output | 8A |
| Topology | Buck | Frequency Switching | Up to 1.2MHz |
| Output Type | Adjustable (Fixed) | Synchronous Rectifier | Yes |
| Number of Outputs | 1 | Operating Temperature | -40??C ~ 150??C (TJ) |
| Voltage Input (Min) | 4.5V | Mounting Type | Surface Mount |
| Voltage Input (Max) | 17V | Package / Case | 18-VFQFN |
| Voltage Output (Min/Fixed) | 0.6V | Supplier Device Package | 18-VQFN-HR (3.5x3.5) |
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