SC189ASKTRT Semtech, SC189ASKTRT Datasheet - Page 15

• Manufacturer Part Number: SC189ASKTRT
• Description: 2.5MHz, 1.5A Synchronous Step Down Regulator In SOT-23_5
• Manufacturer: Semtech

Block Diagram
© 2009 Semtech Corp.
VOUT
EN
Voltage
Select
Oscillator
Internal
500mV
Ref
V
OVP
+
-
+
-
Generator
Error Amp
Ramp
OVP
Comp
PWM
+
-
15
Plimit Comp
Plimit Amp
+
-
Control
Logic
Current Amp
+
-
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SC189
LX
GND
VIN