SC283 SEMTECH [Semtech Corporation], SC283 Datasheet - Page 8

• Manufacturer Part Number: SC283
• Description: Dual Channel 2.5MHz, 1.8A Synchronous Step-Down Regulator
• Manufacturer: SEMTECH [Semtech Corporation]

© 2010 Semtech Corp.
Typical Waveforms (continued)
Circuit Conditions: C
0.5V/div
0.5V/div
2V/div
2V/div
2V/div
2V/div
2V/div
1V/div
V
V
V
V
V
CTLx
CTLx
Start Up (Power up V
V
OUT
V
OUT
V
OUT
IN
IN
IN
V
R
V
R
V
R
IN
OUT
IN
OUT
IN
OUT
=5.0V
=5.0V
=5.0V
=1k
=1k
=1k
Start Up (Enable)(V
Start Up (Enable)(V
IN
Start Up (V
= 10uF/6.3V; C
Start Up (V
Start Up (V
OUT
200µs/div
100µs/div
50µs/div
IN
OUT
=V
=1.5V), EN=VIN
= 22uF/6.3V, L= 2.2uH (TOKO: 1127AS-2R2M).
OUT
OUT
CTLx
OUT
OUT
=1.5V)
=3.3V)
) (V
=1.5V)
=3.3V)
OUT
=1.5V)
8
0.5V/div
0.5V/div
2V/div
2V/div
2V/div
2V/div
2V/div
1V/div
V
V
V
V
V
CTLx
CTLx
Start Up (Power up V
V
OUT
V
OUT
V
OUT
IN
IN
IN
V
R
V
R
V
R
IN
OUT
IN
OUT
IN
OUT
=5.0V
=5.0V
=5.0V
=0.83 (1.8A)
=0.83 (1.8A)
=1.83 (1.8A)
Start Up (Enable)(V
Start Up (Enable)(V
Start Up (V
Start Up (V
Start Up (V
OUT
200µs/div
200µs/div
200µs/div
IN
=V
=1.5V), EN=VIN
OUT
OUT
CTLx
OUT
OUT
=1.5V)
=3.3V)
=1.5V)
) (V
=3.3V)
OUT
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=1.5V)
SC283