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SDC4563

SDC
Part Number SDC4563
Manufacturer SDC
Description Current Mode PWM Controller
Published Oct 11, 2015
Detailed Description Current Mode PWM Controller Datasheet SDC4563 General Description Features SDC4563 is a highly integrated current mo...
Datasheet PDF File SDC4563 PDF File

SDC4563
SDC4563

Overview
Current Mode PWM Controller Datasheet SDC4563 General Description Features SDC4563 is a highly integrated current mode PWM control TIC optimized for high performance, low standby power and cost effective offline flyback converter applications in Nsub 30W range.
EThe internal slope compensation improves system large Msignal stability and reduces the possible subharmonic oscillation at high PWM duty cycle output.
Leading-edge Ublanking on current sense(CS) input removes the signal Cglitch due to snubber circuit diode reverse recovery and thus greatly reduces the external component count and Osystem cost in the design.
DSDC4563 offers complete protection coverage with Lautomatic self-recovery feature including cycle-by-cycle current limiting (OCP), over load protection (OLP), VDD IAover voltage clamp and under voltage lockout (UVLO).
The TGate-drive output is clamped to maximum 18V to protect CONFIDENthe power MOSFET.
 Frequency shuffling technology for improved EMI performance  Audio noise free operation  Extended burst mode control for improved efficiency and minimum standby power design  External programmable PWM switching  Internal synchronized slope compensation  Low VDD startup current and low operating current (1.
4mA)  Leading edge blanking on current sense input  Good protection coverage with auto self-recovery (UVLO/OVP/OCP/OLP)  Package: SOT-23-6 Applications  Battery charger  Power adapter  Set-top box power supplies SDC SOT-23-6 Figure 1.
Package Type December, 2013 Rev.
1.
1 ©2013 Shaoxing Devechip Microelectronics Co.
, Ltd.
1/13 www.
sdc-semi.
com Current Mode PWM Controller Datasheet SDC4563 Pin Configuration Pin Number 1 2 3 4 5 6 Package: SOT-23-6 NTGND 1 MEFB 2 URI 3 6 GATE 5 VDD 4 SENSE L DOCPin Name GND IAFB NTRI ESENSE IDVDD CONFGATE Figure 2.
Pin Configuration Function Ground Feedback input pin.
The PWM duty cycle is determined by voltage level into this pin and SENSE pin input Internal Oscillator frequency setting pin.
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