Datasheet

L
R1
R2
D1
D2
BOOST
Output
Control
Logic
Current
Limit
Thermal
Shutdown
Under
Voltage
Lockout
Corrective Ramp
Reset
Pulse
PWM
Comparator
Current-Sense Amplifier
R
SENSE
+
+
Internal
Regulator
and
Enable
Circuit
Oscillator
Driver
0.25:
Switch
Internal
Compensation
SW
EN
FB
GND
Error Amplifier
-
+
V
REF
0.8V
C
OUT
ON
OFF
V
BOOST
I
L
V
SW
+
-
C
BOOST
V
OUT
C
IN
V
IN
V
IN
I
SENSE
+
-
+
-
+
-
0.93V
-
+
OVP
Comparator
Error
Signal
LM2738
www.ti.com SNVS556B –APRIL 2008–REVISED APRIL 2013
BLOCK DIAGRAM
Figure 27. Simplified Internal Block Diagram
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