SC4503TSKTRT Semtech, SC4503TSKTRT Datasheet - Page 15

• Manufacturer Part Number: SC4503TSKTRT
• Description: IC SW REG STEP-UP 1.4A TSOT23-5
• Manufacturer: Semtech
• Type: Step-Up (Boost), Sepicr

Specifications of SC4503TSKTRT

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: Adj to 27V
• Current - Output: 1.4A
• Frequency - Switching: 1.3MHz
• Voltage - Input: 2.5 ~ 20 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: TSOT-23-5, TSOT-5, TSOP-5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: SC4503TSKTR

 2007 Semtech Corp.
POWER MANAGEMENT
Typical Application Circuits
Figure 9.
Driving Two 6 White LED Strings from 5V. Zener diode D
from over-voltage damage when both LED strings become open.
5V
C1
4.7µF
R3
54.9k
C3
56nF
4
L1: Murata LQH32C
C1: Murata GRM219R60J475K
SHDN/SS
IN
5
SC4503
10µH
GND
L1
2
1
SW
FB
ZHCS400
3
D1
15
24V
+
_
C5
22nF
D2
MM5Z24VT1
220pF
301k
C4
R4
R1
63.4
2
protects the converter
R2
63.4
C2
0.22µF
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SC4503