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ISL62870HRUZ Datasheet(PDF) 1 Page - Intersil Corporation |
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ISL62870HRUZ Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 16 page 1 ¬ FN6708.0 ISL62870 PWM DC/DC Voltage Regulator Controller The ISL62870 IC is a Single-Phase Synchronous-Buck PWM voltage regulator featuring Intersil’s Robust Ripple Regulator (R3) Technology™. The ISL62870 provides a low cost solution for compact high performance applications.The wide 3.3V to 25V input voltage range is ideal for systems that run on battery or AC adapter power sources. Resistor programmed output voltage setpoint and capacitor programmed soft-start delay allow for fast and easy implementation. Robust integrated MOSFET drivers and Schottky bootstrap diode reduce the implementation area and lower component cost. Intersil’s R3 Technology™ combines the best features of both fixed-frequency and hysteretic PWM control. The PWM frequency is 300kHz during static operation, becoming variable during changes in load, setpoint voltage, and input voltage when changing between battery and AC adapter power. The modulators ability to change the PWM switching frequency during these events in conjunction with external loop compensation produces superior transient response. For maximum efficiency, the converter automatically enters diode-emulation mode (DEM) during light-load conditions such as system standby. Pinout ISL62870 (16 LD 2.6X1.8 µTQFN) TOP VIEW Features • Input Voltage Range: 3.3V to 25V • Output Voltage Range: 0.5V to 3.3V • Output Load to 30A • Simple Resistor Programming for Output Voltage • ±0.75% System Accuracy: -10°C to +100°C • Capacitor Programming for Soft-Start Delay • Fixed 300kHz PWM Frequency in Continuous Conduction • External Compensation Affords Optimum Control Loop Tuning • Automatic Diode Emulation Mode for Highest Efficiency • Integrated High-Current MOSFET Drivers and Schottky Boot-Strap Diode for Optimal Efficiency • Choice of Overcurrent Detection Schemes - Lossless Inductor DCR Current Sensing - Precision Resistive Current Sensing • Power-Good Monitor for Soft-Start and Fault Detection • Fault Protection - Undervoltage - Overvoltage - Overcurrent (DCR-Sense or Resistive-Sense Capability) - Over-Temperature Protection - Fault Identification by PGOOD Pull-Down Resistance • Pb-Free (RoHS Compliant) Applications • Mobile PC Graphical Processing Unit VCC Rail • Mobile PC I/O Controller Hub (ICH) VCC Rail • Mobile PC Memory Controller Hub (GMCH) VCC Rail 12 11 10 9 1 2 3 4 GND EN NC SREF BOOT UGATE PHASE OCSET Ordering Information PART NUMBER (Note) PART MARKING TEMP RANGE (°C) PACKAGE (Pb-Free) PKG. DWG. # ISL62870HRUZ GAL -10 to +100 16 Ld 2.6x1.8 µTQFN L16.2.6x1.8A ISL62870HRUZ-T* GAL -10 to +100 16 Ld 2.6x1.8 µTQFN L16.2.6x1.8A *Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and NiPdAu plate - e4 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. Data Sheet August 14, 2008 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2008. All Rights Reserved All other trademarks mentioned are the property of their respective owners. |
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