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LTC3633A-1_15 Datasheet, PDF (10/30 Pages) Linear Technology – Dual Channel 3A, 20V Monolithic Synchronous Step-Down Regulator | |||
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LTC3633A/LTC3633A-1
BLOCK DIAGRAM
OSC1
COMP
SELECT
140k
VIN 0.6V (LTC3633A)
1.5V (LTC3633A-1)
ION
ION
CONTROLLER
VON
RUN
1.22V
AV = 1
RUN
tON
=
VVON
IION
6V (LTC3633A)
12V (LTC3633A-1)
RUN
R
SQ
ON
SWITCH
LOGIC
AND
ANTI-
SHOOT
THROUGH
ICMP
+â
IREV
â+
INTVCC
TG
BG
SENSEâ
SENSE+
CIN
VIN
BOOST
M1
SW
M2
PGND
CBOOST
L1
COUT
ITH
RC
CC1
PGOOD
â
0V
+
0.648V
â
TRACK
UV
SS
+ 0.552V
FB
â
EA
+
FC BURST
MODE
SELECT
IDEAL DIODES
0.6V
REF
INTERNAL
SOFT-START
INTVCC
1.4µA
TRACKSS
R2
R1
CSS
CHANNEL 1
RT
RRT
PHMODE
OSC1
OSC
PHASE
SELECT
OSC2
OSC
PLL-SYNC
0.48V AT START-UP
0.10V AFTER START-UP
CHANNEL 2 (SAME AS CHANNEL 1)
VIN1
3.3V
REG
MODE/SYNC
INTVCC
2.5V
V2P5
REG
SGND
CVCC
3633a BD
10
For more information www.linear.com/LTC3633A
3633a1fb
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