LTC1871 Linear Technology, LTC1871 Datasheet - Page 7

• Manufacturer Part Number: LTC1871
• Description: Wide Input Range/ No RSENSE Current Mode Boost/ Flyback and SEPIC Controller
• Manufacturer: Linear Technology

BLOCK DIAGRA
1.230V
MODE/SYNC
INTV
FREQ
I
FB
TH
4
5
3
2
8
1.230V
CC
2.00V
85mV
+
W
0.6V
5.2V
–
+
–
+
–
+
g
m
V-TO-I
LDO
OV
UV
EA
0.30V
1.230V
I
OSC
TO
START-UP
CONTROL
50k
–
+
COMPENSATION
COMPARATOR
SLOPE
SLOPE
V-TO-I
BURST
BIAS
OSC
V
IN
1.230V
I
V
LOOP
REF
START-UP
BIAS AND
CONTROL
PWM LATCH
S
R
COMPARATOR
CURRENT
Q
LOGIC
C1
+
–
C2
INTV
+
–
GND
R
LOOP
CC
SENSE
1871 BD
1.248V
GATE
RUN
GND
V
10
1
9
7
6
IN
LTC1871
7