ISL6545CBZ

Product Summary

The isl6545cbz is a buck pulse-width modulation PWM controller. The isl6545cbz makes simple work out of implementing a complete control and protection scheme for a DC/DC stepdown converter driving N-Channel MOSFETs in a synchronous buck topology. Since it can work with either 5V or 12V supplies, this one IC can be used in a wide variety of applications within a system. The isl6545cbz integrates the control, gate drivers, output adjustment, monitoring and protection functions into a single 8 Ld SOIC or 10 Ld DFN package. The isl6545cbz makes simple work out of implementing a complete control and protection scheme for a DC/DC stepdown converter driving N-Channel MOSFETs in a synchronous buck topology. Since it can work with either 5V or 12V supplies, this one IC can be used in a wide variety of applications within a system. The isl6545cbz integrates the control, gate drivers, output adjustment, monitoring and protection functions into a single 8 Ld SOIC or 10 Ld DFN package.

Parametrics

isl6545cbz absolute maximum ratings: (1)Supply Voltage, VCC: GND - 0.3V to 15V; (2)BOOT Voltage, VBOOT: GND - 0.3V to 36V; (3)UGATE Voltage VUGATE: VPHASE - 0.3V to VBOOT + 0.3V, VPHASE - 3.5V (<100ns Pulse Width, 2μJ) to VBOOT +0.3V; (4)LGATE/OCSET Voltage, VLGATE/OCSET GND - 0.3V to VCC + 0.3V; (5)GND - 5V (<100ns Pulse Width, 2μJ) to VCC + 0.3V; (6)PHASE Voltage, VPHASE: GND - 0.3V to VBOOT + 0.3V; (7)Upper Driver Supply Voltage, VBOOT - VPHASE: 15V, -0.3V to 16V (<10ns, 10μJ); (8)Clamp Voltage, VBOOT - VCC: 24V; (9)FB, COMP/SD Voltage: GND - 0.3V to 6V; (10)Human Body Model: 1.5kV; (11)Machine Model: 150V; (12)Charged Device Model: 1.0kV; (13)Ambient Temperature Range: 0 to +70℃; (14)Junction Temperature Range: -40 to +125℃.

Features

isl6545cbz features: (1)1.0V to 12V VIN Input Range (up to 20V possible with restrictions; see Input Voltage Considerations); (2)0.6V to VIN Output Range; (3)Integrated Gate Drivers use VCC (5V to 12V); (4)0.6V Internal Reference; ±1.0% tolerance; (5)Voltage-Mode PWM Control; (6)Drives N-Channel MOSFETs; (7)Traditional Dual Edge Modulator; (8)300kHz or 600kHz Fixed Frequency Oscillator; (9)Fixed Internal Soft-Start, Capable into a Pre-biased Load; (10)Integrated Boot Diode; (11)Enable/Shutdown Function on COMP/SD Pin; (12)Output Current Sourcing and Sinking.

Diagrams