Intersil – ISL8002B 2A/5.5V Compact Sync Buck Regulator
The ISL8008B regulator has output tracking and sequencing for FPGA POL applications and enables proper start-up and shut-down of sensitive multi-rail systems. The part’s output rails are configurable for coincidental, ratiometric, or sequential settings, ensuring the FPGA or MPU’s internal ESD diodes are not biased or overstressed during rising or falling outputs. The ISL8002B’s undervoltage lockout and several other protection/stability features (overvoltage, overcurrent, undercurrent, negative current, over temperature and short-circuit) safeguard the system from damage when an unwanted electrical fault event occurs. And its unique negative current protection prevents switch failure.
The ISL8002B’s superior transient response and high level of integration enable a complete synchronous step-down DC/DC converter solution in less than a 0.10 inch2 footprint. By integrating low RDS(ON) high-side PMOS and low-side NMOS MOSFETs, the buck regulator eliminates the need for a bootstrap capacitor and diode, and its high efficiency allows the use of small inductors to further reduce board space.
Key Features
- VIN range 2.7V to 5.5V
- IOUT maximum is 2A
- External soft-start programmable
- Output tracking and sequencing
- Switching frequency is 2MHz
- Selectable PFM or PWM operation option
- Overcurrent and short-circuit protection
- Over-temperature/thermal protection
- VIN undervoltage lockout and VOUT overvoltage protection
- Up to 95% peak efficiency
Applications
- General purpose POL
- Industrial, instrumentation and medical equipment
- FPGAs
- Telecom and networking equipment
- Game console
