PWM Controller. SDC4563 Datasheet

SDC4563 Controller. Datasheet pdf. Equivalent

Part SDC4563
Description Current Mode PWM Controller
Feature Current Mode PWM Controller Datasheet SDC4563 General Description Features SDC4563 is a highly i.
Manufacture SDC
Datasheet
Download SDC4563 Datasheet

Current Mode PWM Controller Datasheet SDC4563 General Desc SDC4563 Datasheet
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SDC4563
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



SDC4563
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. A resistor connected between RI and
GND set the PWM frequency
Current sense input pin. Connected to MOSFET current sensing resistor node
Chip DC power supply pin
Totem-pole gate drive output for the power MOSFET
Table 1. Pin Description
SDC
December, 2013 Rev. 1.1
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
2/13
www.sdc-semi.com





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