The IFX81481ELVXUMA1 is a high efficient synchronous PWM step-down DC/DC controller with external power switches, packaged in a small PG-SSOP-14 with exposed pad. The controller is capable to drive external power MOSFETs and is ideally suited for load currents from 2A up to 10A. A current limitation feature is provided which can be adjusted to application specific requirements. The current limit can be implemented either in Rdson configuration, measuring the voltage over the high-side switch while it is closed, or in a shunt configuration where a shunt resistor above the high-side switch is used to measure the voltage.
Feature
- Synchronous step down Controller driving currents up to 10A
- Current limitation adjustable with Shunt resistor or Rdson
- Adjustable output voltage
- ± 2% output voltage tolerance
- External power transistors
- Integrated bootstrap diode
- PWM regulation
- Very Low Dropout Operation: max Duty Cycle higher than 99%
- Input voltage range from 4.75V to 45V
- Adjustable switching frequency from 100 to 700 kHz
- Synchronization input
- Very low shutdown current consumption (<2μA)
- Soft-start function
- Input undervoltage lockout
- Suited for industrial applications: Tj = -40°C to +125°C
- Green Product (RoHS compliant)
Applications
- General Purpose
- DC/DC Pre-regulation
- Battery forklifts
- (multi-)Battery chargers
- FPGAs
- PoL for 12V/24V rails
- Power supply cards
- Video imaging
