uP1586数据手册uPI(UBIQ)中文资料规格书

描述 Description

The uP1586 is a dual synchronous buck controller with 5V/3.3V 100mA LDOsfor notebook system power supply solution.

The uP1586 supports high efficiency, fast transient response and provides a combinedPOK signal. The ultrasonic mode maintains the switching frequency above audio frequency,which eliminates noise in audio applications. The proprietary RCOTTM technologyprovides fast transient response and high noise immunity.

The uP1586 has internal soft-start to control the inrush current. Other featuresinclude overcurrent protection, overvoltage protection, power-up sequencing, powerOK output, and thermal shutdown. The uP1586 is available in the space saving packageVQFN4x4-24L, specified from -40OC to 85OC.

特性 Features

·Wide Input Voltage Range: 6V to 26V
·Two Synchronous Buck Controllers.
·Dual Fixed 5V/3.3V Outputs or Adjustable from 2V to 5.5V.
·Selectable PWM, DEM and USM in Light Load.
·Internal Soft-start and Soft-Discharge.
·RCOTTM (Robust Constant On-Time) Control Architecture.
·4500ppm/OC RDS(ON) Current Sensing.

·100mA 5V/3.3V LDO with Switches.
·Secondary FB Input Maintains Charge Pump Voltage (uP1586R).
·2V±1% Reference Voltage Output.
·Power OK Indicator.
·OVP/UVP/OCP/OTP.
·VQFN4x4-24L.
·RoHS Compliant and Halogen Free.

应用 Application

·Notebook and Subnotebook System Power Supplies.
·3-4 Cell Li-Ion Battery-Power Devices.
·Dual Output Supplies for DSP, Memory, Logic and Microprocessor.