XC9503 datasheet(30/30 Pages) TOREX

30 / 30 page

! Load Transient Response

< PWM Control

! PWM / PFM Switching Control >

FOSC = 300kHz, VOUT1, 2 = 3.3V

VIN = 5.0V, IOUT = 1, 2 = 5mA PWM1, 2 'Low'

" 'High'

VIN = 5.0V, IOUT = 1, 2 = 5mA PWM1, 2 'HIgh'

" 'Low'

CH1

3.3V

CH1

3.3V

0.65V

CH2

CH1 : VOUT1, 2, AC-COUPLED, 10mV/div

CH1 : VOUT1, 2, AC-COUPLED, 20mV/div

CH2 : IOUT1, 2, 0.5V/div

< Soft Start Wave Form >

FOSC = 300kHz, VOUT1, 2 = 3.3V

VIN = 5.0V, IOUT = 1, 2 = 300mA EN1, 2 'Low'

" 'High'

VIN = 5.0V, IOUT = 1, 2 = 100mA EN1, 2 'Low'

" 'High'

CIN=47

µF

CIN=47

µF

3.3V

CH1

200mA

75mA

CH2

0.65V

CH3

CH1 : VOUT1, 2, 2.0V/div

CH2 : IIN1, 2, 100mA/div

CH2 : IIN1, 2, 50mA/div

CH3 : EN1, 2, 0.5V/div

* CH1 : EN2=GND when measurement

CH2 : EN1=GND when measurement

4msec / div

XC9503 Series

2ch. Step-down DC/DC Controller ICs

400µsec / div

200µsec / div

XC9503 Datasheet(PDF) 30 Page - Torex Semiconductor

XC9503 Datasheet(HTML) 30 Page - Torex Semiconductor

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