SC4503TSKTRT Semtech, SC4503TSKTRT Datasheet - Page 5

• 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
Block Diagram
SHDN/SS
FB
IN
4
5
2
D1
REFERENCE
VOLTAGE
Q1
1.25V
+
-
EA
SHUTDOWN
THERMAL
Figure 2. SC4503 Block Diagram
REF NOT READY
T > 155° ° ° ° C
J
CLK
OSCILLATOR
-
+
PWM
5
SLOPE COMP
R
S
Σ Σ Σ Σ
Q
+
+
ILIM
+
-
Z1
I-LIMIT
Q2
ISEN
1V
+
-
+
-
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SC4503
GND
SW
1
2
Q3
R
SENSE