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| FAN2011 Datasheet, PDF (6/10 Pages) Fairchild Semiconductor – 1.5A Low Voltage Current Mode Synchronous PWM Buck Regulator | |||
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Typical Performance Characteristics (Continued)
TA = 25°C, CIN = 10µF, COUT = 40µF, L = 3.3µH, VIN = 5V, unless otherwise noted.
Start-up Response
Start-up Response
Input
Voltage
(5V/div)
Input
Voltage
(5V/div)
SW Node
Voltage
(5V/div)
SW Node
Voltage
(5V/div)
Inductor
Current
(200mA/div)
Output
Voltage
(500mV/div)
VOUT = 1.2V
IOUT = 100mA
Time (50µs/div)
Inductor
Current
(200mA/div)
Output
Voltage
(1V/div)
VOUT = 3.3V
IOUT = 100mA
Time (100µs/div)
Input
Voltage
(5V/div)
SW Node
Voltage
(5V/div)
Inductor
Current
(500mA/div)
Output
Voltage
(500mV/div)
Load
Current
100mA
SW Node
Voltage
(5V/div)
Output
Voltage
(20mV/div)
Inductor
Current
(200mA/div)
Start-up Response
Input
Voltage
(5V/div)
SW Node
Voltage
(5V/div)
Inductor
Current
(500mA/div)
IVOOUUTT==115.020VmA
Output
Voltage
(1V/div)
Time (100µs/div)
Transient Response
700mA
VOUT = 1.2V
Time (5µs/div)
Load
Current
700mA
SW Node
Voltage
(5V/div)
Output
Voltage
(20mV/div)
Inductor
Current
(200mA/div)
Start-up Response
VOUT = 3.3V
IOUT = 1500mA
Time (100µs/div)
Transient Response
100mA
VOUT = 1.2V
Time (5µs/div)
FAN2011/FAN2012 Rev. 1.0.2
6
www.fairchildsemi.com
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