High-Efficiency, Quad-Output, Main Power Supply Controllers for Notebook Computers

 

Features

Wide Input Voltage Range 5.5V to 25V

Dual Fixed 1.05V/3.3V and 1.5V/5.0V Outputs or 

Adjustable 0.7V to 5.5V (SMPS1) and 0.5V to 2.5V 

(SMPS2), ±1.5% Accuracy

1.7ms Digital Soft-Start and Independent Shutdown

Fixed 3.3V/5.0V, or Adjustable Output 0.7V to 4.5V, 

±1.5% (LDO): 200mA

2.0V Reference Voltage

Constant ON-TIME Control with 100ns Load-Step 

Response

Selectable Switching Frequency

rDS(ON)

 Current Sensing

Programmable Current Limit with Foldback Capability

Selectable PWM, Skip or Ultrasonic Mode

BOOT Voltage Monitor with Automatic Refresh

Independent POK1 and POK2 Comparators

Soft-Start with Pre-Biased Output and Soft-Stop

Independent ENABLE

High Efficiency - Up to 97%

Very High Light Load Efficiency (Skip Mode)

5mW Quiescent Power Dissipation

Thermal Shutdown

Extremely Low Components Count

Pb-Free (RoHS Compliant)

 

 

 

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