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LTC7813 Datasheet(PDF) 33 Page - Linear Technology

Part # LTC7813
Description  150V Low IQ, Synchronous Step-Down DC/DC Controller
PDF  38 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC7813 Datasheet(HTML) 33 Page - Linear Technology

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LTC3895
33
3895fa
For more information www.linear.com/LTC3895
Typical applicaTions
High Efficiency Switching Surge Stopper
39µF
COUTA
22µF
COUTB
RSENSE
6m
MBOT
MTOP
CB
0.1µF
L1
15µH
CSNS
1nF
CITHA
4.7nF
CITHB
100pF
CSS
0.1µF
CINTVCC
0.1µF
CDRVCC
4.7µF
100µF
CINA
0.47µF
CINB
RITH
10k
MNDRV
RFREQ
42.2k
ROVLOB
1M
ROVLOA
34.9k
RSS
100k
COVLO
3.3µF
RA
46.4k
RB
1M
ROVLOC
1M
VIN
INTVCC
CPUMP_EN
DRVSET
DRVUV
ITH
SS
3895 TA03
GND
LTC3895
TG
SW
BG
SENSE+
SENSE-
EXTVCC
VFB
BOOST
NDRV
DRVCC
VIN
12V*
VOUT
12V**
5A
OVLO
PHASMD
PLLIN
VPRG
ILIM
CLKOUT
GND
RUN
FREQ
GND
GND
MTOP: BSC190N15NS3G
MBOT: BSC520N15NS3G
MNDRV: IPD320N20N3
L1: WURTH 74435571500
COUTA: OS-CON 35SVPF39M
x4
MODE
PINS NOT USED
IN THIS CIRCUIT
PGOOD
**VOUT FOLLOWS VIN WHEN VIN < 18V,
VOUT REGULATES TO 18V WHEN VIN > 18V
*SURGES TO 140V,
OVLO TIMER LIMITS
SWITCHING TIME
ABOVE 36V TO 4 SECONDS
100µs/DIV
GND
VIN
20V/DIV
VOUT
20V/DIV
3895 TA03a
20ms/DIV
GND
VIN
20V/DIV
VOUT
20V/DIV
3895 TA03b



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