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LTC3785-1 Datasheet(PDF) 7 Page - Linear Technology

Part # LTC3785-1
Description  10V, High Effi ciency, Buck-Boost Controller with Power Good
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3785-1 Datasheet(HTML) 7 Page - Linear Technology

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LTC3785-1
7
37851f
BLOCK DIAGRAM
+
–
+
–
+
–
+
–
+
–
2.4V
TSD
1.225V
TG1
BG1
VOUT
LOW
15mV
OR
1X ILIMIT
gm
1/25k
V = 60k/RILSET
X10
V = 90k/RILSET
UVLO
VBE
2μA
ILIM(OUT)
ILIM(OUT)
10μA MAX
1μA
RUN/SS
CSS
VSENSE
VOUT
FB
RT
MODE
1.5V
SS
ILIM COMP
IMAX COMP
VC
1.225V
RUN
VREF
–7.5%
FAULT
LOGIC
BURST
LOGIC
ILIMIT
SET
1/2 LIMIT AT VOUT < 1V
GND/PGND
PGOOD
UV
OV
SD
UVLO
1 = Burst Mode OPERATION
0 = FIXED FREQUENCY
100% DUTY
CHARGE PUMP
100% DUTY
CHARGE PUMP
0 = 15mV
1 = ILIMIT
4.5V REG
SAMPLED
SAMPLED
PGND
1.8V
DISABLE
REVERSE
CURRENT LIMIT
(ZERO LIMIT FOR BURST)
IDEAL DIODE
BBM
SW1
DELAY
VCC
VIN
ILIMIT
VIN
2.7V TO 10V
ISVIN
VBST1
VBST2
VOUT
D1
OPT
D2
OPT
COUT
L1
TG1
MA
CIN
CVCC
MB
MD
MC
CB
CA
SW1
SW2
SW1
SW2
BG2
VDRV
PGND
ISSW2
ISSW1
ISVOUT
VDRV
BG1
TG2
ADRV
IMAX
SW1
PULSE
SW2
PULSE
TG2
BG2
VREV
BBM
SW2
DELAY
BDRV
CCM
37851 BD
VREV
CDRV
DDRV
REVERSE
LIMIT
UV
UV
+
–
7.5%
OSC
OV
BURST
OV
1.225V
R2
R1
RT
RILSET
+
–
+
–
ILSET
VOUT
CP1
23
22
20
21
19
18
16
17
10
12
11
13
14
15
6
25
9
5
8
7
2
3
4
1
24


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