LTC3407-3 Linear Technology, LTC3407-3 Datasheet - Page 6

• Manufacturer Part Number: LTC3407-3
• Description: Dual Synchronous 1.8V/0.8A and 3.3V/0.8A 2.25MHz Step-Down DC/DC Regulator
• Manufacturer: Linear Technology

BLOCK DIAGRA
LTC3407-3
6
MODE/SYNC
V
V
RUN1
RUN2
OUT1
OUT2
10
6
1
2
9
REGULATOR 1
0.6V REF
REGULATOR 2 (IDENTICAL TO REGULATOR 1)
R1 = 240k, R3 = 120k FOR CHANNEL 1
R1 = 270k, R2 = 60k FOR CHANNEL 2
SHUTDOWN
0.55V
0.65V
0.6V
R1
R3
V
FB
W
OSC
+
–
–
+
+
–
UVDET
OVDET
EA
I
UV
OV
TH
OSC
0.65V
SLOPE
COMP
S
R
LATCH
–
+
RS
BURST
Q
Q
EN
SWITCHING
BLANKING
COUNTER
CIRCUIT
SLEEP
LOGIC
POR
AND
PGOOD2
PGOOD1
–
I
COMP
SHOOT-
I
THRU
ANTI
RCMP
+
+
–
BURST
CLAMP
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5Ω
V
V
IN
IN
34073 BD
11
4
3
8
5
7
SW1
GND
34073fa
V
POR
GND
SW2
IN