Product Description

DESCRIPTION:

• The uP1585 is a dual synchronous buck controller with 5V/3.3V 100mA LDOs for notebook system power supply solution.
• The uP1585 supports high efficiency, fast transient response and provides a combined POK signal. The ultrasonic mode maintains the switching frequency above audio frequency, which eliminates noise in audio applications.
• The proprietary RCOT TM technology provides fast transient response and high noise immunity.
• Technical sheet: http://www.alldatasheet.fr/view.jsp?Searchword=UP158

• Wide Input Voltage Range: 6V to 26V
• Two Synchronous Buck Controllers
• Dual Fixed 5V/3.3V Outputs or Adjusta ble from 2V to 5.5V
• Selectable PWM, DEM and USM in Light Load
• Internal Soft-start and Soft-Discharge
• RCOT TM (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

APPLICATIONS:

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