FAN8303 View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
Manufacturer
FAN8303 Datasheet PDF : 12 Pages
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Typical Performance Characteristics
VIN = 12V, VOUT = 5V, L1 = 15μH, CIN = 10μF, COUT = 22μF, TA = +25oC, unless otherwise noted.
CH2
CH1(VO) : 2V, 500µs/div.
CH2(EN) : 4V, 500µs/div.
CH3(SW) : 6V, 500µs/div.
CH4(IL) : 1A, 500µs/div.
CH2
CH1(VO) : 2V, 50µs/div.
CH2(EN) : 4V, 50µs/div.
CH3(SW) : 6V, 50µs/div.
CH4(IL) : 1A, 50µs/div.
CH1
CH3
CH4
CH1
CH3
CH4
Figure 4. EN Startup with 2A Load
Figure 5. EN Turn-off with 2A Load
CH1
CH2
CH3
CH4
CH1(VO) : 2V, 1ms/div.
CH2(VIN) : 4V, 1ms/div.
CH3(SW) : 6V, 1ms/div.
CH4(Io) : 1A, 1ms/div.
Figure 6. Power-on with 2A Load
CH1
CH2
CH3
CH4
CH1(VO) : 2V, 200µs/div.
CH2(VIN) : 4V, 200µs/div.
CH3(SW) : 6V, 200µs/div.
CH4(Io) : 1A, 200µs/div.
Figure 7. Power-off with 2A Load
CH1
△Vo = 240mV
CH1(VO) : 5V offset
200mV, 50µs/div.
CH2(COMP) : 300mV, 50µs/div.
CH3(SW) : 10V, 50µs/div.
CH4(Io) : 1A, 50µs/div.
CH4
CH3
CH2
Slew Rate( 2.5A/µs)
CH1
△Vo = 204mV
Slew Rate( 2.5A/µs)
CH4
CH3
CH2
CH1(VO) : 5V offset
200mV, 50µs/div.
CH2(COMP) : 300mV, 50µs/div.
CH3(SW) : 10V, 50µs/div.
CH4(Io) : 1A, 50µs/div.
Figure 8. Load Transient Response (0.5A to 1.5A)
Figure 9. Load Transient Response (1.5A to 0.5A)
© 2008 Fairchild Semiconductor Corporation
FAN8303 • Rev. 1.0.0
6
www.fairchildsemi.com
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