Richtek RTQ5756A Step-Down Converter
Richtek RTQ5756A Step-Down Converter is a synchronous converter with 4-phase capability and triple outputs with 2+1+1 phase. This converter, with an I2C interface, allows both multi-phase and single-phase operations. The RTQ5756A converter features a 2MHz and 2.2MHz typical switching frequency, fast transient response, and output Dynamic Voltage Scaling (DVS) with a programmable ramp-up/down slew rate. This converter supports a remote-sense function that ensures precise output voltage under heavy loads. The RTQ5756A converter offers programmable functions such as voltage level, voltage change slew rate, and soft-start slew rate. This converter operates from -40°C to 125°C temperature range and is available in the WL-CSP-54B 2.69x3.92 (BSC) package. The RTQ5756A converter is used in applications such as I/O power, low-power processors, optical modules, OTT devices, and storage systems.
Features
- 4-phase capability
- Proprietary Advanced Constant On-Time (ACOT®) control architecture
- 3V to 5.5V input supply voltage range
- 2MHz and 2.2MHz typical switching frequency
- Supports 5A output current capability per phase
- Differential remote sense for each output with high accuracy
- Fast transient response
- Output DVS with programmable ramp up/down slew rate
- Power saving mode enables higher light load efficiency
- Programmable soft-start function
- Watchdog reset function prevents system hang
- Cycle-by-cycle current limit for each phase
- Output overvoltage/undervoltage protection
- Available in a WL-CSP-54B 2.69x3.92 (BSC) package
Applications
- Optical modules
- Home gateway and access point networks
- Set-top boxes and OTT devices
- Surveillance systems
- Storage systems
- I/O power
- Low-power processors
Application Circuit Diagram
Publié le: 2025-03-02
| Mis à jour le: 2025-05-19