Datasheet

LM2695
ON TIMER
250 ns
OFF TIMER
LEVEL
SHIFT
THERMAL
SHUTDOWN
7V SERIES
REGULATOR
VCC
UVLO
8V-30V
Input
VIN
C1
R
ON
C5
RON
/SD
SS
FB
RTN
LOGIC
REGULATION
COMPARATOR
OVER-
VOLTAGE
COMPARATOR
+
-
+
-
+
-
D1
SGND
ISEN
SW
BST
VCC
VIN
COMPLETE
START
R
ON
START
COMPLETE
C3
C4
R1
R2
R3
C2
CURRENT LIMIT
COMPARATOR
R
SENSE
50 m:
V
OUT1
V
OUT2
2.9V
2.5V
12.3 PA
GATE DRIVE
UVLO
L1
+
-
+
-
0.8V
DRIVER
DRIVER
62.5 mV
C6
6.5 7.0 7.5 8.0 8.5 9.0
5.0
5.5
6.0
6.5
7.0
7.5
V
CC
(V)
V
IN
(V)
F
S
= 750 kHz
F
S
= 45 kHz
F
S
= 150 kHz
0
10 20 30
V
IN
(V)
0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
ON-TIME (Ps)
R
ON
= 400k
R
ON
= 200k
R
ON
= 100k
R
ON
= 44.2k
LM2695
www.ti.com SNVS413A –JANUARY 2006–REVISED APRIL 2013
Typical Performance Characteristics
Figure 3. V
CC
vs V
IN
Figure 4. ON-Time vs V
IN
and R
ON
Typical Application Circuit and Block Diagram
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