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LTC3121 Datasheet(PDF) 8 Page - Linear Technology

Part # LTC3121
Description  15V, 1.5A Synchronous Step-Up DC/DC Converter with Output Disconnect
PDF  26 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3121 Datasheet(HTML) 8 Page - Linear Technology

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LTC3121
8
3121fa
For more information www.linear.com/LTC3121
block DiagraM
3121 BD
LTC3121
PWM
LOGIC
AND
DRIVERS
SHUTDOWN
SD
CURRENT
SENSE
TSD
VREF_UP
OSC
SD
OVLO
ANTI-RING
PWM
BURST
SYNC
CONTROL
3
1
L1
11
12
7
8
10
2
13
+ –
–
+ –
ADAPTIVE SLOPE COMPENSATION
ILIM
REF
4
5
9
LDO
VBEST
VIN VOUT
6
OSCILLATOR
OSC
+ –
BULK CONTROL
SIGNALS
SOFT-START
VC CLAMP
SD
TSD
OVLO
REFERENCE
UVLO
THERMAL SD
VREF_UP
1.202V
TSD
SGND
PGND
EXPOSED PAD
RT
VCC
VIN
CIN
RT
SW
PWM/SYNC
SD
VIN
1.8V TO 5.5V
CVCC
4.7µF
COUT
IZERO
COMP
OVLO
PGND
16.2V
1.202V
gm ERROR
AMPLIFIER
VOUT
CAP
FB
R1
R2
VC
CPL
VC
RPL
C1
100nF
CC
RC
CF
VOUT
2.2V TO 15V
THE VALUES OF RC, CC, AND CF ARE BASED UPON OPERATING CONDITIONS.
PLEASE REFER TO COMPENSATING THE FEEDBACK LOOP SECTION FOR
GUIDELINES TO DETERMINE OPTIMAL VALUES OF THESE COMPONENTS.
VIN
–
+



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