SC120ULTRT Semtech, SC120ULTRT Datasheet - Page 22

• Manufacturer Part Number: SC120ULTRT
• Description: IC BOOST 3.3V/ADJ 6MLPD
• Manufacturer: Semtech
• Type: Step-Up (Boost)r

Specifications of SC120ULTRT

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 3.3V, 1.8 ~ 5 V
• Frequency - Switching: 1.2MHz
• Voltage - Input: 0.7 ~ 4.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 6-MLPD-UT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Power - Output: -
• Other names: SC120ULTR

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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