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OB3396AP

On-Bright
Part Number OB3396AP
Manufacturer On-Bright
Description High Precision Off-line Primary-Side PWM Power Switch
Published Aug 18, 2014
Detailed Description High Precision Off-line Primary-Side PWM Power Switch OB3396 GENERAL DESCRIPTION OB3396 is a primary side regulation o...
Datasheet PDF File OB3396AP PDF File

OB3396AP
OB3396AP

Overview
High Precision Off-line Primary-Side PWM Power Switch OB3396 GENERAL DESCRIPTION OB3396 is a primary side regulation off-line LED lighting controller which can achieve accurate LED current.
It significantly simplifies LED lighting system design by eliminating the secondary side feedback circuitry.
Proprietary Constant Voltage (CV) and Constant Current (CC) control is integrated as shown in the figure below.
The LED current (CC control) can be adjusted externally by the resistor Rs at SOURCE pin.
Device operates in PFM in CC mode as well at large load condition and it operates in PWM with frequency reduction at light/medium load.
OB3396 offers comprehensive protection coverage with auto-recovery features including Cycle-by-Cycle current limiting, VDD OVP, VDD clamp and UVLO.
Excellent EMI performance is achieved with On-Bright proprietary frequency shuffling technique.
OB3396 is offered in DIP8 package.
FEATURES „ High Precise Constant Current Regulation at Universal AC input „ Primary-side Sensing and Regulation Without TL431 and Opto-coupler „ Programmable CC Regulation „ Adjustable Constant Current and Output Power Setting „ Built-in Secondary Constant Current Control with Primary Side Feedback „ Built-in Adaptive Current Peak Regulation „ Built-in Primary winding inductance compensation „ Power on Soft-start „ Built-in Leading Edge Blanking (LEB) „ Cycle-by-Cycle Current Limiting „ VDD Under Voltage Lockout with Hysteresis (UVLO) „ VDD OVP „ VDD Clamp TYPICAL APPLICATION On Br i ©On-Bright Electronics gh t Co Fig.
1.
Typical CC/CV Curve nf id e Confidential -1- nt i .
APPLICATIONS Low Power AC/DC offline SMPS for „ LED applications al to Preliminary Datasheet OB_DOC_DS_339600 OB3396 High Precision Off-line Primary-Side PWM Power Switch GENERAL INFORMATION Pin Configuration The pin map is shown as below for DIP8.
Package Dissipation Rating Package RθJA (℃/W) DIP8 75 Absolute Maximum Ratings Parameter Drain Voltage(off state) VDD Voltage VDD...


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