RS53319
2.85V to 16V Input, 20A Sync Step-Down Converter with Programmable Switching Frequency and Over Current Limit
Features
- Robust Constant On-Time (RCOTTM) Control with fast transient response
- Input Voltage Range: 2.85V to 16V with external bias, or 4V to 16V with internal bias
- Output Voltage Range: 0.6V to 5.5V for RS53319 and RS53319L, 0.9V to 5.5V for RS53319H. 90% max duty cycle
- 20A continuous output current
- Excellent load and line regulations with 0.5% voltage accuracy
- Differential Remote Sensing
- Mode Selection Between Pulse Skip and CCM at Light Load
- Programmable soft-start time
- 1.0µA Current into VIN Pin during Shutdown
- Programmable Switch Valley Current Limit
- Adjustable Switching Frequency: 600kHz, 800kHz, 1000kHz and 2.1MHz
- Non-latch OCP, UVP, UVLO and OTP. Latch-off OVP
- 3mm x 4mm 21-Pin QFN Package
- RoHS compliant and Green
Description
The RS53319 is a high-power density, fully integrated synchronous buck converter. It has a wide input voltage range, and can support up to 20A continuous output current at defined conditions. LDO is integrated internally, which is very suitable for single input supply conditions. External bias is optional for maximizing efficiency. A differential sensing scheme and an internal feedback reference voltage achieve ±1% tolerance over full temperature range and, in conjunction, they perform an excellent line and load regulation.
Switching frequency can be easily adjusted from 600kHz, 800kHz, 1000kHz, to 2.1MHz. The RS53319 uses patented Robust Constant On-Time (RCOTTM) control scheme with fast transient response. Pure MLCC output capacitors can be used to save space and cost.
RS53319 has full protection features including OCP, NOCP, OVP, UVP and over temperature protection (OTP).
The RS53319 is available in a 3mm x 4mm 21-Pin QFN package.
Applications
- Telecom/Datacom
- Base Station
- Computing, Servers, Storage, AI
- Point of Load (POL) Module
- Standard 12V Rail Supplies
- Gaming Consoles and Graphic Cards
- TV Power
Ordering Information
| Part Number | Notes | Status | RoHS | Package | Buy / Sample |
| RS53319HR | Vref = 0.9V | Active | Yes | 3 x 4mm, QFN-21 | Buy on DigiKey |
| RS53319LR | Vref = 0.6V | Active | Yes | 3 x 4mm, QFN-21 | Buy on DigiKey |
