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Dual-Output or Two-Phase Synchronous Buck Controller.
SGM64200 SGM64200.pdf

No.13377

FEATURES

? Two Single-Phase or One Dual-Phase Outputs

? SYNC Pin with One Cycle Clock Recovery
? PHASE Pin with 0°/180° or 90°/270° Operation
? Two Devices in Master-Slave Mode
? Wide Input Supply from 3V to 20V
? Precise Reference of 600mV: ±0.75%
? Adjustable Output from 0.6V to 5.4V
? Adjustable Frequency from 100kHz to 1MHz
? Voltage Mode PWM with Input Feedforward
? Dual N-MOSFET Drivers with Integrated 
  Bootstrap Switch
? Accurate Inductor DCR or Resistor Current Sense
? Individual Power Good Open-Drain Pin
? Individual Enable Pin & Programmable Soft-Start 
  Time Capable of Pre-Bias Startup
? Accurate Current Sharing in Dual-Phase
? Remote Output Sense Amplifier in Dual-Phase
? Individual Over-Current Limit Set
? Cycle-by-Cycle Over-Current Limit with Hiccup
? Input Supply Under-Voltage Lock-Out Pin
? Individual Output Over-Voltage/Under-Voltage 
  Protection
? Thermal Shutdown Protection
? Available in a Green TQFN-5×5-32AL Package


DESCRIPTION

The SGM64200 integrates two synchronous Buck controllers which can be configured as two independent single-phase outputs or one dual-phase output. Two devices can also be linked up as a master-slave through an external pin to provide four single-phase outputs or two dual-phase outputs. The switching phases of linked devices are adjustable to achieve four phases interleaving. The device accepts an input range from 3V to 20V with a precise reference voltage of 0.6V.
The controllers employ fixed frequency voltage mode PWM regulation scheme. Separated enable, current-sense and PGOOD pins are incorporated to allow soft-start times and current limits to be programmable individually. The device offers individual
over-current, output over-voltage and output under-voltage protections.


APPLICATION CIRCUIT
PIN CONFIGUTION
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