Datasheet

7
LT1511
BLOCK DIAGRAM
W
–
+
–
+
–
+
–
+
–
+
V
SW
0.7V
1.5V
V
BAT
V
REF
V
C
GND
UV
SLOPE COMPENSATION
R2
R3
C1
PWM
B1
CA2
–
+
–
+
CA1
VA
+
+
–
+
6.7V
+
V
REF
2.465V
SHUTDOWN
200kHz
OSCILLATOR
S
R
R
R
R1
1k
R
PROG
V
CC
UV
OUT
V
CC
BOOST
SW
SENSE
SPIN
BAT
I
PROG
R
S3
R
S2
R
S1
I
BAT
0VP
BAT
1511 BD
PROG
I
PROG
I
BAT
=
(I
PROG
)(R
S2
)
R
S1
C
PROG
75k
Q
SW
V
CC
g
m
= 0.64
Ω
–
+
CL1
CLP
100mV
CLN
COMP1
COMP2
+
=
(R
S3
= R
S2
)
2.465V
R
PROG
R
S2
R
S1
(())