PD‐97663 4A Highly Integrated SupIRBuckTM Single‐Input Voltage, Synchronous Buck Regulator -1-
IR3897
FEATURES
...
PD‐97663 4A Highly Integrated SupIRBuckTM Single‐Input Voltage, Synchronous Buck
Regulator -1-
IR3897
FEATURES
Single 5V to 21V application Wide Input Voltage Range from 1.0V to 21V with external Vcc Output Voltage Range: 0.5V to 0.86* Vin Enhanced Line/Load Regulation with Feed‐Forward Programmable Switching Frequency up to 1.5MHz Internal Digital Soft‐Start/Soft‐Stop Enable input with Voltage Monitoring Capability Thermally Compensated Current Limit with robust hiccup mode over current protection Smart Internal LDO to improve light load and full load efficiency External Synchronization with Smooth Clocking Enhanced Pre‐Bias Start‐Up Precision Reference Voltage (0.5V+/‐0.5%) with margining capability Vp for Tracking Applications (Source/Sink Capability +/‐4A) Integrated MOSFET drivers and Bootstrap Diode Thermal Shut Down Programmable Power Good Output with tracking capability Monotonic Start‐Up Operating temp: ‐40 C < Tj < 125 C
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The IR3897 SupIRBuckTM is an easy‐to‐use, fully integrated and highly efficient DC/DC
regulator. The onboard PWM controller and MOSFETs make IR3897 a space‐efficient solution, providing accurate power delivery. IR3897 is a versatile
regulator which offers programmability of switching frequency and internal current limit while operates in wide input and output voltage range. The switching frequency is programmable from 300kHz to 1.5MHz for a...