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General Description
AT6108Z is an active power factor corrected controller to drive PFC boost stages base on ATK
patented Pseudo Digital Control (PDC) method.
In PDC loop, AT6108Z could operates in traditional fixed frequency operation for Continuous Conduction
Mode (CCM) in heavy loading and Discontinuous Conduction Mode (DCM) in lighter loading.
The loop stability and response of operations is well controlled by PDC Loop. AT6108Z features a robust
suite of protection features to properly handle an array of power supply operating and fault condition.
The devices is available in PSOP-8L package and requires few external devices for operation.

General Description
AT6105Z is an active power factor corrected controller to drive PFC boost stages base on ATK patented Pseudo Digital Control (PDC) method.
In PDC loop, AT6105Z could operates in traditional fixed frequency operation for Continuous Conduction
Mode (CCM) in heavy loading and Discontinuous Conduction Mode (DCM) in lighter loading.
By optionally utilizing ZCD pin to sensing demagnetization of inductance, AT6105Z could also operates in Critical Conduction Mode (CRM).
The loop stability and response of these multi-mode operations is well controlled by PDC Loop. AT6105Z
features a robust suite of protection features to properly handle an array of power supply operating and fault
condition.
The devices is available in SOP-14L package and requires few external devices for operation.

General Description
AT6103Z is an active power factor corrected controller to drive PFC boost stages base on ATK
patented Pseudo Digital Control (PDC) method.
In PDC loop, AT6103Z could operates in traditional fixed frequency operation for Continuous Conduction
Mode (CCM) in heavy loading and Discontinuous Conduction Mode (DCM) in lighter loading.
By optionally utilizing ZCD pin to sensing demagnetization of inductance, AT6103Z could also
operates in Critical Conduction Mode (CRM).
The loop stability and response of these multi-mode operations is well controlled by PDC Loop. AT6103Z
features a robust suite of protection features to properly handle an array of power supply operating and fault
condition.
The devices is available in SOP-14L package and requires few external devices for operation.

General Description
AT6102Z is a active power factor corrected controller to drive PFC boost stages base on ATK patented Pseudo Digital Control(PDC) method.
In PDC loop ,AT6102Z classically operates in Critical conduction Mode(CRM) when the inductor current below a programmable value.
When the current is exceed this preset level ,the AT6102Z natural change to Continuous conduction
Mode(CCM).The loop stability and response is controlled by PDC Loop. AT6102Z features a robust suite of protection features to properly handle an array of power supply operating and fault condition.
The devices is available in SOP-10L package and require few external devices for operation.

General Description
AT6903Z is a secondary side Synchronous Rectification driver IC to drive SR MOS replaces Schottky rectification diode for higher efficiency. With adaptive dead time control method, AT6903Z could operates in DCM and CCM safely without cross conduction issue. In system light load condition, AT6903Z enter light load mode and stop Gate switching result to less standby power loss.
The devices are available in SOT23_5L package and require few external devices for operation.

General Description
AT6101L is a active power factor corrected controlIer to drive PFC boost stages base on ATK
patented Pseudo Digital Control(PDC) method.
In PDC loop,AT6101L classically operates in Critical conduction Mode(CRM) when the inductor current
below a programmable value.
When the current is exceed this preset level,the AT6101L natural chage to Continuous conduction
Mode(CCM).The loop stab山ty and response is controlled by
PDC Loop. AT6101L features a robust suite of protec­ tion features to properly handel an arry of
power supply operating and fault condition.
The devices is available in SOP-14L package and require few external devices for operation.

General Description
AT6101Z is a active power factor corrected controller to drive PFC boost stages base on ATK
patented Pseudo Digital Control(PDC) method.
In PDC loop,AT6101Z classically operates in Critical conduction Mode(CRM) when the inductor current
below a programmable value.
When the current is exceed this preset level,the AT6101Z natural change to Continuous conduction
Mode(CCM).The loop stab山ty and response is controlled by PDC Loop. AT6101Z features a robust suite
of protec­ tion features to properly handle an array of power supply operating and fault condition.
The devices is available in SOP-14L package and require few external devices for operation.

General Description
AT6902Z is a secondary side Synchronous Rectification driver IC to drive SR MOS replaces Schottky rectification diode for higher efficiency. With adaptive dead time control method, AT6902Z could operates in DCM and CCM safely without cross conduction issue. In system light load condition, AT6902Z enter light load mode and stop Gate switching result to less standby power loss.
The devices is available in SOP-8L package and require few external devices for operation.

General Description
AT6901Z is a secondary side Synchronous Rectification driver IC to drive SR MOS replaces Schottky rectification diode for higher efficiency. With adaptive dead time control method, AT6901Z could operates in DCM and CCM safely without cross conduction issue. In system light load condition, AT6901Z enter light load mode and stop Gate switching result to less standby power loss.
The devices is available in SOT23_5L package and require few external devices for operation.

General Description
AT1688Z is a highly integrated quasi-resonant (QR) mode PWM control for flyback converter, optimized for high
performance, low standby power consumption and cost effective offline flyback converter applications.
The AT1688Z internal valley detector ensures minimum drain voltage switching at QR operation. At low line and
heavy loading, it operates in continuous conduction mode(CCM) via an external resistor sets minimum fixed frequency.
At high line and normal loading, it operates in QR mode. When light load, it operates in pulse frequency
modulation (PFM) mode. When the output power falls below a given level, it enters the burst mode.
The AT1688Z built-in multiple protection with VCC under voltage lockout (UVLO), VCC over voltage protection
(OVP), VCC clamp, GATE clamp, internal over temperature protection (OTP), Output over voltage protection, DEM
high level protection, cycle-by-cycle current limiting (OCP), over load protection (OLP), X-cap discharge, brown in/out
protection, and leading-edge blanking (LEB) of the current sensing to prevent circuit damage occurred under abnormal
conditions.
The AT1688Z is available in an SOP-10L package and require very few external devices for operation.

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