ISL6534CR数据手册集成电路（IC）的线性稳压器控制器规格书PDF

描述 Description

The ISL6534 is a versatile triple regulator that has two independent synchronous-rectified buck controllers with integrated 12V gate drivers (OUT1 and OUT2) and a linear controller (OUT3) to offer precision regulation of up to three voltage rails. An optional shunt regulator allows 12V only operation, when a 5V supply is not available.

特性 Features

• Two Synchronous-Rectified Buck Controllers
   - Voltage Mode control
   - VIN range up to 12V
   - VOUT range from 0.6V to 6V
   - 12V LGATE drivers; up to 12V Boot Strap for UGATE
• Switcher References
   - 0.6V Reference for OUT1 (0.8% Accurate)
   - 3.3V Reference Output for OUT2 (0.8% Accurate)
   - External Reference Input for OUT2
   - Buffered VTT Reference Output
• Switcher clocking
   - Phase options for Optimal Clock Relationship
   - Resistor-Selectable Switching Frequency (300kHz default; Resistor to Ground for 300kHz to 1MHz range)
   - Synchronization-Capable Switching Frequency (Connect FS_SYNC to Separate Regulator)
• Single Linear Controller
   - Drives N-Channel MOSFET
   - 0.6V Reference (0.8% Accurate)
   - VIN range up to 12V
   - VOUT range from 0.6V to 6V
• 12V and 5V supplies required (but optional shunt regulator can generate VCC = 5.8V from 12V)
• Three Independent Soft-Start/Enable Pins
   - Gang Together or Control Independently
• PGOOD Output Indicates All Outputs Available
• Thermally Enhanced QFN or TSSOP Package
• QFN Package:
   - Compliant to JEDEC PUB95 MO-220 QFN
   - Quad Flat No Leads - Package Outline
   - Near Chip Scale Package footprint, which improves PCB efficiency and has a thinner profile
• Pb-Free Available (RoHS Compliant)