| Part Number | TPS51221RTVR | TPS51222RTVR | 
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | 
| Category | PMIC - Voltage Regulators - Linear + Switching | PMIC - Voltage Regulators - Linear + Switching | 
|   |   | |
| Product Status | Active | Active | 
| Topology | Step-Down (Buck) Synchronous (1), Linear (LDO) (2) | Step-Down (Buck) (2), Linear (LDO) (2) | 
| Number of Outputs | 3 | 4 | 
| Frequency - Switching | 200kHz ~ 1MHz | 200kHz ~ 1MHz | 
| Voltage/Current - Output 1 | Controller | Controller | 
| Voltage/Current - Output 2 | 3.3V, 10mA | Controller | 
| Voltage/Current - Output 3 | 5V, 100mA | 3.3V, 10mA | 
| w/LED Driver | No | No | 
| w/Supervisor | No | No | 
| w/Sequencer | No | No | 
| Voltage - Supply | 4.5V ~ 28V | 4.5V ~ 32V | 
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 32-WFQFN Exposed Pad | 32-WFQFN Exposed Pad | 
| Supplier Device Package | 32-WQFN (5x5) | 32-WQFN (5x5) |