SC2544TSTRT Semtech, SC2544TSTRT Datasheet - Page 21

• Manufacturer Part Number: SC2544TSTRT
• Description: IC CTRL/REG SYNC BUCK 24-TSSOP
• Manufacturer: Semtech
• Type: Step-Down (Buck)r

Specifications of SC2544TSTRT

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 2
• Voltage - Output: Adj to 0.75V
• Frequency - Switching: 100kHz ~ 300kHz
• Voltage - Input: 4.5 ~ 28 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Power - Output: -
• Other names: SC2544TSTR

POWER MANAGEMENT
Typical Characteristics (Cont.)
2005 Semtech Corp.
100%
80%
60%
40%
20%
0%
350
300
250
200
150
100
9
8
7
6
5
4
4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5
50
0
Operating frequency vs. Rosc.
1
Efficiency Curve for
RILIM vs. OCP (Vi=12V).
2
Vout=3.3V.
3
Vin=8V
RILIM(KOHM)
4
Rosc(KOHM)
Io(A)
5
6
Vin=16V
7
8
9
10
21
10.13
10.11
10.09
10.07
10.05
10.03
10.5
10.3
10.1
9.9
9.7
9.5
190
188
186
184
182
180
178
10 12 14 16 18 20 22 24 26 28 30
-40
-40
Freq. vs. Temp. ( Rosc=75kohm,
Vcc vs. Vin ( Ta=25 Degree C).
-20
-10
0
Temperature (Degree C)
Vcc vs. Temp.
20
Vin=16V).
20
Tj (Degree C)
Vin (V)
40
50
60
80
www.semtech.com
80
SC2544
110
100
120