Datasheet

LT3740
6
3740fc
BLOCK DIAGRAM
–
+
+
–
+
–
+
–
+
–
+
+
–
+
–
1.2MHz
OSCILLATOR
RAMP
GENERATOR
V
REF
0.80V
300KHz
OSCILLATOR
RAMP
GENERATOR
SWITCH
LOGIC
BIAS
Q1
8
16
13
14
15
12
7
6
4
3
2
5
1
11
V
C
SHDN
XREF
FB
PGOOD
TGATE
SW
BGDP
BGATE
PGND
SN
+
SN
–
RANGE
G
m
SWB
A2
A3
A1
g
m
RQ
0.72V
S
V
IN
7.8V
3740 BD
910
+
Σ
Σ
PIN FUNCTIONS
V
C
(Pin 16): Error Amplifi er Compensation Pin. Connect the
external compensation RC to this pin. The current comparator
threshold increases with the voltage of this pin.
Exposed Pad (Pin 17): Ground. Must be soldered to PCB
ground.