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LTC7803 Datasheet(PDF) 13 Page - Analog Devices

Part # LTC7803
Description  40V, Low IQ, 3MHz, Triple Output Buck/Buck/Boost Controller
PDF  42 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC7803 Datasheet(HTML) 13 Page - Analog Devices

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LTC7811
13
Rev. 0
For more information www.analog.com
FUNCTIONAL DIAGRAM
ALLOFF
CLK1
CLK2
1.2V
VFB1
ALLOFF
2mV
RA
RB
CC2
CC1
RC
CIN
CB
L
RSENSE
COUT
CSS
12.5µA
100k
DB
RUN
FREQ
PLLIN/SPREAD
ITH
VFB
SENSE–
SENSE+
GND
SW
TG
BOOST
MODE
DROPOUT
DETECT
SWITCH
LOGIC
INTVCC
TOP
BOT
TOP ON
Q
S
R
EA
ICMP
IR
SLEEP
0.88V
0.425V
SLOPE COMP
0.8V
VIN1,2
VOUT1,2
VBIAS
INTVCC
EXTVCC
VBIAS LDO
EXTVCC LDO
TRACK/SS
ITH
CLAMP
1.4V
BG
INTVCC
BUCK CHANNELS 1 AND 2
EN
EN
4.7V
5.1V
OV
5.1V
0.88V
0.72V
PGOOD1
SPREAD
SPECTRUM
OSCILLATOR
AND PLL
7811 FD
ALLOFF
1.2V
ALLOFF
MODE
CLK1
R2
R1
CC4
RC3
COUT3
L3
RSENSE3
CIN3
CSS3
12.5µA
RA3
RB3
CC3
D3
RUN3
ITH3
VFB3
SENSE3+
SENSE3-
GND
SWITCH
LOGIC
INTVCC
BOT
BOT ON
Q
S
R
EA
ICMP
SLEEP
1.32V
0.425V
1.2V
VOUT3
VIN3
SS3
ITH
CLAMP
1.4V
BG3
BOOST CHANNEL 3
OV
VPRG3
VPRG3
FLOAT
GND
INTVCC
ADJUSTABLE
8V FIXED
9.5V FIXED
VOUT3
IMON3
SLOPE COMP
ITH3
BATTGOOD
BATTSNS
9.75V
ALLOFF
+
–
+
–
+
–
+
–
+
–



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