sc120skevb Semtech Corporation, sc120skevb Datasheet - Page 22

• Manufacturer Part Number: sc120skevb
• Description: Low Voltage Synchronous Boost Regulator
• Manufacturer: Semtech Corporation

Applications Information (continued)
Figure 2 — PSAVE Operation With Exit to PWM Due To Output Voltage Decay
Inductor
Inductor
Current
Current
V
V
OUT
OUT
Figure 3 — PSAVE Operation With Exit to PWM Due To Off -time < 5μs
Voltage
Voltage
240mA
240mA
+1.8%
+0.8%
Prog’d
+1.8%
+0.8%
Prog’d
-2%
-2%
0A
0A
BURST
BURST
PSAVE Mode at
Moderate Load
PSAVE Mode at
Moderate Load
(> 5μs)
OFF
OFF
BURST
Higher Load
Higher Load
OFF
Applied
Applied
BURST
Time
Time
BURST
PSAVE exit due to
off-time reduction
to output decay
PSAVE exit due
(< 5μs)
OFF
PWM Mode at
PWM Mode at
High Load
High Load
PWM Mode
PWM Mode
SC120
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