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| LTC3769_15 Datasheet, PDF (27/32 Pages) Linear Technology – 60V Low IQ Synchronous Boost Controller | |||
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LTC3769
Typical Applications
CSS 0.1µF
CITH
15nF
RITH
12.1k
CITHA 100pF
VBIAS
SENSE+
ILIM LTC3769
EXTVCC
SENSEâ
OVMODE
PLLIN/MODE
RUN
TG
FREQ
SW
SS
BOOST
BG
ITH
INTVCC
CB 0.1µF
D
RA 12.1k
VFB
RS
232k
GND
100k
PGOOD
RSENSE
4mΩ
L
3.3µH
MTOP
MBOT
CINT
4.7µF
CIN
22µF
VIN
5V TO 24V
COUTA +
22µF
Ã4
COUTB
150µF
VOUT
24V
5A*
CIN, COUTA: TDK C4532X5R1E226M
COUTB: SUNCON 35HVH150M
D: BAS140W
L: PULSE PA1494.362NL
MBOT, MTOP: RENESAS RJK0452, RJK0453
3769 F08
*WHEN VIN < 8V, MAXIMUM LOAD CURRENT AVAILABLE IS REDUCED. WHEN VIN > 24V, VOUT FOLLOWS VIN.
Figure 8. High Efficiency 24V Boost Converter
CSS 0.1µF
CITH
15nF
RITH
8.66k
CITHA 220pF
VBIAS
SENSE+
ILIM LTC3769
EXTVCC
SENSEâ
OVMODE
PLLIN/MODE
RUN
TG
FREQ
SW
SS
BOOST
BG
ITH
INTVCC
CB 0.1µF
D
RA 12.1k
VFB
RS
261k
GND
100k
PGOOD
RSENSE
4mΩ
L
3.3µH
MTOP
MBOT
CINT
4.7µF
CIN, COUTA: TDK C4532X7R1H685K
COUTB: SUNCON 63CE220KX
D: BAS140W
L: PULSE PA1494.362NL
MBOT, MTOP: RENESAS HAT2169H
CIN
22µF
VIN
5V TO 28V
COUTA +
22µF
Ã4
COUTB
150µF
VOUT
28V
4A*
3769 F09
*WHEN VIN < 8V, MAXIMUM LOAD CURRENT AVAILABLE IS REDUCED. WHEN VIN > 28V, VOUT FOLLOWS VIN.
Figure 9. High Efficiency 28V Boost Converter
For more information www.linear.com/LTC3769
3769f
27
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