XC9503 datasheet(30/32 Pages) TOREX

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XC9503 Series

< PWM Control ⇔ PWM / PFM Switching Control >

CH1

CH2

3.3V

0.65V

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

CH2: IOUT1, 2, 0.5V/div

< Soft-Start Wave Form >

FOSC=300kHz, VOUT1, 2 =3.3V

VIN = 5.0V, IOUT1, 2 = 300mA,

EN1, 2 'Low'→'High', CIN=47μF

CH1

CH2

3.3V

200μsec/div

FOSC=300kHz, VOUT1, 2 =3.3V

VIN=5.0V, IOUT1, 2 =5mA, PWM1, 2 'Low'→'High'

FOSC=300kHz, VOUT1, 2 =3.3V

VIN=5.0V, IOUT1, 2 =5mA, PWM1, 2 'High'→'Low'

CH1

CH2

3.3V

CH1

CH3

3.3V

CH1: VOUT1, 2, 2.0V/div

CH2: IIN1, 2, 100mA/div

CH3: EN1, 2, 0.5V/div

4msec/div

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

CH2: IOUT1, 2, 0.5V/div

400μsec/div

FOSC=300kHz, VOUT1, 2 =3.3V

VIN = 5.0V, IOUT1, 2 = 100mA,

EN1, 2 'Low'→'High', CIN=47μF

4msec/div

CH1: VOUT1, 2, 2.0V/div

CH2: IIN1, 2, 50mA/div

CH3: EN1, 2, 0.5V/div

0.65V

CH3

CH2

0.65V

200mA

0.65V

75mA

* CH1: EN2=GND when measurement

CH2: EN1=GND when measurement

(17) Load Transient Response (Continued)

■

TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

XC9503 Datasheet(PDF) 30 Page - Torex Semiconductor

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