SC2447 Semtech Corporation, SC2447 Datasheet - Page 8

• Manufacturer Part Number: SC2447
• Description: Dual-Phase Single or Two Output Synchronous Step-Down Controller
• Manufacturer: Semtech Corporation

Circuit Conditions: 2-Output Configuration as in Figure 16. V
Circuit Conditions: 2-Ouput Configuration, V
Typical Application Circuit Performance
© 2006 Semtech Corp.
POWER MANAGEMENT
20mV/div
20mV/div
20mV/div
10A/div
10V/div
10V/div
10V/div
V
V
V
V
V
V
I
OUT2
OUT2
OUT1
OUT2
SW2
SW2
SW1
I
I
I
OUT2
OUT1
OUT2
Output Voltage Ripple (V
=25A
=20A
=25A
Output Voltage Ripple
V
OUT1
2µs/DIV
1µs/DIV
& V
OUT2
OUT2
IN
)
= 12V, L
0.1V/div
5A/div
OUT
V
I
OUT2
OUT2
=0.4uH for V
I
OUT2
Load Transient Response (V
IN
=20A to 25A
= 12V, V
OUT
= 1.2V, L
OUT1
200µs/div
= 2.5V, V
8
OUT
=1uH for V
OUT2
= 1.2V, R
OUT2
OUT
= 2.5V, 3.3V, and 5.0V, R
)
OSC
= 51.1kΩ, SYNC = 0, and T
0.5V/div
V
20A/div
2V/div
SS2/EN2
V
I
OUT2
OUT2
Overload Hiccup (V
OSC
= 51.1kΩ, and T
www.DataSheet4U.com
50ms/div
A
= 25°C.
www.semtech.com
SC2447
A
OUT2
= 25°C.
)