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USRB04 Datasheet

Part Number USRB04
Manufacturers UTC
Logo UTC
Description HIGH PRECISION PRECISION LOW POWER SWITCH
Datasheet USRB04 DatasheetUSRB04 Datasheet (PDF)

UNISONIC TECHNOLOGIES CO., LTD USRB04 Preliminary HIGH PRECISION PRECISION LOW POWER SWITCH  DESCRIPTION USRB04 is a high performance, high precision and low cost PWM Power switch for non-isolated buck and buck-boost application. It combines a dedicated current mode PWM controller with a high voltage power Bipolar in SOP8 package. Its built-in error amplifier is optimized for good overshoot and dynamic response for low cost and component count. With precise inner resistor divider, precise r.

  USRB04   USRB04






Part Number USRB02
Manufacturers Unisonic Technologies
Logo Unisonic Technologies
Description HIGH PRECISION CC/CV PRIMARY SIDE SWITCH
Datasheet USRB04 DatasheetUSRB02 Datasheet (PDF)

UNISONIC TECHNOLOGIES CO., LTD USRB02 Preliminary LINEAR INTEGRATED CIRCUIT HIGH PRECISION CC/CV PRIMARY SIDE SWITCH  DESCRIPTION The UTC USRB02 is a primary controller for charger and adapter applications. The controlled variable is transferred by an auxiliary winding from the secondary to the primary side. The device operates in Pulse Frequency Modulation (PFM) in CC mode as well at large load condition and it operates in Pulse Width Modulation (PWM) with frequency reduction at light/me.

  USRB04   USRB04







Part Number USRB01A
Manufacturers UTC
Logo UTC
Description HIGH PRECISION CC/CV PRIMARY SIDE SWITCH
Datasheet USRB04 DatasheetUSRB01A Datasheet (PDF)

UNISONIC TECHNOLOGIES CO., LTD USRB01A Preliminary LINEAR INTEGRATED CIRCUIT HIGH PRECISION CC/CV PRIMARY SIDE SWITCH „ DESCRIPTION The UTC USRB01A is a primary controller for charger and adapter applications. The controlled variable is transferred by an auxiliary winding from the secondary to the primary side. The device uses Pulse Frequency Modulation (PFM) method to build discontinuous conduction mode (DCM) flyback power supplies. The UTC USRB01A operates in primary-side sensing and reg.

  USRB04   USRB04







Part Number USRB01
Manufacturers Unisonic Technologies
Logo Unisonic Technologies
Description HIGH PRECISION CC/CV PRIMARY SIDE SWITCH
Datasheet USRB04 DatasheetUSRB01 Datasheet (PDF)

UNISONIC TECHNOLOGIES CO., LTD USRB01 Preliminary LINEAR INTEGRATED CIRCUIT HIGH PRECISION CC/CV PRIMARY SIDE SWITCH  DESCRIPTION The UTC USRB01 is a primary controller for charger and adapter applications. The controlled variable is transferred by an auxiliary winding from the secondary to the primary side. The device uses Pulse Frequency Modulation (PFM) method to build discontinuous conduction mode (DCM) flyback power supplies. The UTC USRB01 operates in primary-side sensing and regula.

  USRB04   USRB04







HIGH PRECISION PRECISION LOW POWER SWITCH

UNISONIC TECHNOLOGIES CO., LTD USRB04 Preliminary HIGH PRECISION PRECISION LOW POWER SWITCH  DESCRIPTION USRB04 is a high performance, high precision and low cost PWM Power switch for non-isolated buck and buck-boost application. It combines a dedicated current mode PWM controller with a high voltage power Bipolar in SOP8 package. Its built-in error amplifier is optimized for good overshoot and dynamic response for low cost and component count. With precise inner resistor divider, precise reference of EA, constant voltage regulation of 5.0V at universal AC input can be guaranteed. Frequency reduction and burst mode control is implemented for high efficiency at light load. Good EMI performance is achieved with On-Bright proprietary frequency shuffling technique and soft base driver design. Low startup current and low operating current contribute to a reliable power on startup and low standby power consumption with USRB04. Constant power operation is supported at over load application with USRB04, which makes it suitable for small home appliance application where instant large power consumption is required such as start-up of a fan. USRB04 offers power on soft start control and protection coverage with auto-recovery features including cycle-by-cycle current limiting, output short circuit protection, FB pin open loop protection, on-chip Over Temperature Protection (OTP), VDD Over Voltage Protection (OVP) and VDD Under Voltage Lockout Protection (UVLO). The tone energy at be.


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