IR3846
IR3846 is Synchronous Buck Regulator manufactured by International Rectifier.
FEATURES
- Single 5V to 21V application
- Wide Input Voltage Range from 1.5V to 21V with external Vcc
- Output Voltage Range: 0.6V to 0.86- PVin
- 0.5% accurate Reference Voltage
- Enhanced line/load regulation with Feed-Forward
- Programmable Switching Frequency up to 1.5MHz
- Internal Digital Soft-Start
- Enable input with Voltage Monitoring Capability
- Remote Sense Amplifier with True Differential Voltage Sensing
- Thermally pensated current limit and Hiccup Mode Over Current Protection
- Smart LDO to enhance efficiency
- Vp for tracking applications and sequencing
- Vref is available externally to enable margining
- External synchronization with Smooth Clocking
- Dedicated output voltage sensing for power good indication and overvoltage protection which remains active even when Enable is low.
- Enhanced Pre-Bias Start up
- Body Braking to improve transient
- Integrated MOSFET drivers and Bootstrap diode
- Thermal Shut Down
- Post Package trimmed rising edge dead-time
- Programmable Power Good Output with tracking
- Small Size 5mm x 7mm PQFN
- Operating Junction Temp: -40o C<Tj<125o C
- Lead-free, Halogen-free and Ro HS pliant
DESCRIPTION
The IR3846 Sup IRBuck® is an easy-to-use, fully integrated and highly efficient DC/DC regulator. The onboard PWM controller and MOSFETs make IR3846 a space-efficient solution, providing accurate power delivery for low output voltage and high current applications. IR3846 is a versatile regulator which offers programmability of switching frequency and current limit while operating in wide input and output voltage range. The switching frequency is programmable from 300 k Hz to 1.5MHz for an optimum solution. It also features important protection functions, such as Over Voltage Protection (OVP), Pre-Bias startup, hiccup current limit and thermal shutdown to give required system level security in the event of fault conditions.
APPLICATIONS
- Net Applications
- Embedded Tele Systems
- Server Application
- Distributed Point of Load Power...
