%PDF-1.6
%
1 0 obj
<>
endobj
2 0 obj
<>stream
Switching AC-DC Adapter
Switching AC-DC Adapter
NB Adapter
Printer Adapter
Proprietary PowerZeroTM Technology
Proprietary PowerZeroTM Technology
Integrating a 700V Start-up Device
Brown-In/Brown-Out Protection
Proprietary SmartJitterTM Technology
Reducing EMI Emissions of SMPS
Eliminating Frequency-Jittering-Induced Output Ripple
Operating in Continuous-Conduction Mode (CCM)
Discontinuous-Conduction
Mode (DCM)
and DCM with Valley Switching
Accurate Over-Current Protection (OCP)
Programmable Line Compensation
Programmable Output OVP and UVP
Programmable External OTP
Driver Capability : 300mA/−300mA
High Noise Immunity
RoHS Compliant and Halogen Free
PowerZeroTM Multi-Mode Flyback Controller
The RT7789D series is an enhanced high-efficiency multi-mode PWM flyback ,controller, incorporating Richtek's proprietary PowerZeroTM and SmartJitterTM ,technology. The innovative PowerZeroTM technology, featuring an integrated HV ,device, provides an excellent green power solution, while the SmartJitterTM ,technology can reduce EMI emissions of a switch-mode power supply in green mode ,as well as eliminate output ripple due to frequency jittering. Also, the ,RT7789D series features a multi-mode control scheme, operating from ,continuous-conduction mode (CCM) to discontinuous-conduction mode (DCM) with ,valley switching, to achieve high efficiency and optimal performance.The ,RT7789D is a current-mode PWM controller for flyback converters. It integrates ,comprehensive and programmable protection features, which include ,brown-in/brown-out protection, VDD over-voltage protection (VDD OVP), output ,over-voltage and under-voltage protection (Output OVP and UVP), secondary ,rectifier short-circuit protection (SRSP), and external over-temperature ,protection (External OTP). For constant output power regulation, a resistor ,connected to CS pin can be used to achieve accurate line compensation across ,the universal input voltage range. With the above features, the RT7789D enables ,a cost-effective and compact design for a wide range of AC-DC conversion ,applications. It is available in a SOP-8 package.,,
endstream
endobj
3 0 obj
<>
endobj
4 0 obj
<>
endobj
6 0 obj
<>
endobj
5 0 obj
<>
endobj
17 0 obj
<>stream
hTPN0AUX.wBpha%ntu"7$Q{lyj-02~ap*ĭ+L:Ln#N-
Z4#'-1!wB%NH4
X<]tx,?_BUæ-AdM#BQ5{A;:b~U/F
ϼ|݇Yrx1-8oY-` j
endstream
endobj
18 0 obj
<>stream
hTPn0[uH.cA,\UbCvMTȄo:ؖ}t-ܑ ٛ#,W6LܻͬD%衮H%7pnAEv4%JH3RMG!^ Pk{KYӄP+ uͷfql?Ƕi{3/taVd^dCV!~ (mk4
endstream
endobj
8 0 obj
<>stream
HWnH}Wےfݼ 2v2 {-mdhm1H'~nRTlgX`'$3쮪SNUu -(q)|EBdNf!>QĂHtA~Džn&xS՜4LQ53% Ưl1tv|Dg?mgg]Fea$#Zj0x1?f/32~Q*E(Vy3|n
BC6gT
0c@'bt`j0$ABK8gh?ه e!&y/ ~jFE|709N0Q=<