SC2447 Semtech Corporation, SC2447 Datasheet - Page 9

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

Circuit Conditions: 2-Phase Configuration as in Figure 17, V
Typical Application Circuit Performance
POWER MANAGEMENT
© 2006 Semtech Corp.
20mV/div
0.5V/div
V
20A/div
50A/div
10V/div
10V/div
2V/div
SS1/EN1
V
V
V
V
I
I
OUT
OUT
OUT
SW1
SW2
OUT
I
OUT2
=50A
Output Voltage Ripple (V
Soft-Start Up
10ms/div
1µs/DIV
OUT
)
0.5V/div
0.1V/div
V
10A/div
20A/div
2V/div
SS1/EN1
V
V
I
I
OUT
OUT
OUT
OUT
IN
= 12V, V
I
OUT2
I
OUT
Load Transient Response (V
=40A to 50A
=0A
Pre-biased Start Up (V
OUT
= 1.2V, R
200µs/div
10ms/div
9
OSC
= 51.1kΩ, SYNC = 0, and T
OUT
)
OUT
)
0.5V/div
0.5V/div
V
V
50A/div
1A/div
SS1/EN1
5V/div
5V/div
SS1/EN1
2V/div
V
V
V
I
GDL1
I
OUT
OUT
OUT
OUT
A
= 25°C.
R
OUT2
=1Ω
Overload Hiccup (V
www.DataSheet4U.com
Shutdown (V
200µs/div
50ms/div
www.semtech.com
SC2447
OUT
)
OUT
)