SC121ULTRT Semtech, SC121ULTRT Datasheet - Page 9

• Manufacturer Part Number: SC121ULTRT
• Description: IC BOOST SYNC 1.2A MLPD-6
• Manufacturer: Semtech
• Type: Step-Up (Boost)r

Specifications of SC121ULTRT

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 3.3V, 1.8 ~ 5 V
• Current - Output: 1.2A
• 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
• Power - Output: -
• Other names: SC121ULTRTTR

Typical Characteristics — V
4.05
3.95
3.85
4.05
3.95
3.85
4.1
3.9
4.1
3.9
100
4
4
90
80
70
60
50
40
30
20
10
0
0.1 0.2
0
R
R
R
1
1
1
V
0.8
Line Regulation — Low Load (V
T
= 976k Ω , R
IN
= 976k Ω , R
= 976k Ω , R
A
50
= 1.2V
= 85°C
T
A
0.5
100 150
= 25°C
1.2
Effi ciency vs. I
Load Regulation (V
2
2
2
1
= 412k Ω , L = 4.7 μ H, C
= 412k Ω , L = 4.7 μ H, C
T
= 412k Ω , L = 4.7 μ H, C
A
= –40°C
1.6
2
200 250
I
I
5
OUT
OUT
V
2
IN
(mA)
(mA)
OUT
(V)
10
300 350
V
IN
(V
V
= 3.6V
2.4
20
IN
FB
FB
FB
= 2.4V
OUT
OUT
OUT
V
= 22pF, T
= 22pF, I
= 22pF, T
IN
V
= 1.2V
IN
= 4.0V)
= 4.0V)
50
400 450
= 3.6V
2.8
= 4.0V
OUT
100 200
OUT
A
V
A
IN
= 25
= 25
= 4.0V)
= 2.4V
= 1mA
3.2
ο
ο
500
C
C
500
550
3.6
4.05
3.95
3.85
4.05
3.95
3.85
4.1
3.9
4.1
3.9
100
4
4
90
80
70
60
50
40
30
20
10
0
0.1 0.2
0
R
R
R
1
1
1
Line Regulation — High Load (V
0.8
= 976k Ω , R
= 976k Ω , R
= 976k Ω , R
50
T
A
= –40°C
100 150
0.5
1.2
Effi ciency vs. I
Load Regulation (V
2
2
2
1
= 412k Ω , L = 4.7 μ H, C
= 412k Ω , L = 4.7 μ H, C
= 412k Ω , L = 4.7 μ H, C
T
A
1.6
= 25°C
2
200 250
T
A
I
I
OUT
OUT
5
= 85°C
V
2
IN
(mA)
(mA)
OUT
(V)
10
300 350
T
A
(V
= 85°C
2.4
20
FB
FB
FB
OUT
OUT
= 22pF, V
= 22pF, V
= 22pF, I
= 4.0V)
= 4.0V)
50
400 450
2.8
T
T
A
T
A
OUT
100 200
A
OUT
= 25°C
= 25°C
IN
IN
= 85°C
= 2.4V
= 2.4V
= 4.0V)
= 110mA
SC121
T
T
3.2
A
A
= –40°C
= –40°C
500
500
550
3.6
9