Features
- 2.7V to 5.5V operating input range
- 5A output current
- Output adjustable from 0.6V
- 100% duty cycle in dropout
- 20mΩ and 16mΩ internal power MOSFET switches
- High switching frequency (1.8MHz)
- EN for Power Sequencing
- Operation modes options: RAA808015A (DEM) and RAA808015B (Force PWM)
- Fixed Soft Start time
- Cycle-by-cycle overcurrent protection (3 times)
- OCP and SCP with Hiccup mode
- Input undervoltage lockout (UVLO)
- Over-temperature protection
- Small QFN 2x2.5 package
Description
The RAA808015 is a compact single-channel DCDC Synchronous Buck regulator. To cover 2.7~5.5V input rail and 5A loading applications, the regulator requires a high switching frequency to minimize inductor size, improve transient response performance, and improve light-load efficiency. The regulator is designed with COT IP to improve transient response performance and PFM to improve light load efficiency. It comes in two derivatives, RAA808015A (DEM) and RAA808015B (Force PWM) Simplify the BOM number without compensation. The RAA808015A/B are available in a 10-pin 2*2.5 QFN package.
Parameters
| Attributes | Value |
|---|---|
| Topology [Rail 1] | Buck |
| Outputs (#) | 1 |
| Input Voltage (Min) [Rail 1] (V) | 2.7 |
| Input Voltage (Max) [Rail 1] (V) | 5.5 - 5.5 |
| Output Voltage (Min) [Rail 1] (V) | 0.6 |
| Output Voltage (Max) [Rail 1] (V) | 5 |
| Output Current (Max) [Rail 1] (A) | 5 |
| Switching Frequency Range (Typical) (kHz) | 1800 - 1800 |
| Control Type | COT |
| Peak Efficiency (%) | 95 |
| IQ [Rail 1] (µA) | 55 |
| SYNCH Capability | No |
| Qualification Level | Standard |
| Temp. Range (°C) | -40 to +105°C, -40 to +125°C |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| TQFN | 2.0 x 2.5 x 0.75 | 10 | 0.6 |
Application Block Diagrams
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Power Sequencer & I/O Expander for Printers (PPC/MFP)
An MCU-based power sequencer and I/O expander for high-performance PPC/MFP printers.
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Additional Applications
- High power density distributed power system
- POL for core of DSP/ASIC/MCU
- Clouding and networking
- Telecom
- Industrial
- Medical equipment