Datasheet

LOGIC
SYNC/NON-
SYNC
BODY DIODE CTRL and TRUE S/D
PWM
Ramp
AGND
CURRENT
LIMIT
10 uA
SW
COMP
VIN
PGND
EN
FB
S/D
OSC
UVP
SCP
Current
Sense
UVP
REF
BGBG
TSD
+
-
+
-
+
-
+
-
Feedback Fault Protection
RESET
SET
EAMP
REF
SS VOUT
Q
QR
S
LM4510
www.ti.com SNVS533C –SEPTEMBER 2007–REVISED MAY 2013
BLOCK DIAGRAM
Figure 23. LM4510 Block Diagram
Operation Description
LM4510 is a peak current-mode, fixed-frequency PWM boost regulator that employs both Synchronous and Non-
Synchronous Switching.
The DC/DC regulator regulates the feedback output voltage providing excellent line and load transient response.
The operation of the LM4510 can best be understood by referring to the Block Diagram.
NON-SYNCHRONOUS OPERATION
The device operates in Non-synchronous Mode at light load (I
OUT
< 10 mA) or when output voltage is lower than
10V (typ.). At light load, LM4510 automatically changes its switching operation from 'Synchronous' to 'Non-
Synchronous' depending on V
IN
and L. Non-Synchronous operation at light load maximizes power efficiency by
reducing PMOS driving loss.
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