LTC3769_15 Datasheet, PDF (29/32 Pages) Linear Technology – 60V Low IQ Synchronous Boost Controller

Typical Applications
LTC3769
VBIAS
SENSE⁺
LTC3769
EXTVCC
OVMODE
SENSE^–
47.5k
C_SS 0.1µF
C_ITH
10nF
R_ITH
24.9k
C_ITHA 100pF
PLLIN/MODE
RUN
TG
FREQ
SW
SS
BOOST
BG
ITH
I_LIM
INTV_CC
12.1k
1%
VFB
232k
1%
GND
100k
PGOOD
R_SENSE
6mΩ
L
6.8µH
D
MBOT
C_INT
4.7µF
C_IN, C_OUTA: MURATA GRM32ER71J106KA12L
C_OUTB: SUNCON 63HVH56M
D: DIODES INC B360
L: COILCRAFT XAL1010 6.8µH
MBOT: INFINEON BSC100NO6LS
*WHEN V_IN > 24V, V_OUT FOLLOWS V_IN.
C_IN
10µF
×2
V_IN
5V TO 60V
C_OUTA ⁺
10µF
C_OUTB
56µF
×2
V_OUT
24V*
2A
3769 F12
Figure 12. Low I_Q Nonsynchronous 24V/2A Boost Converter
0.1µF
VBIAS
SENSE⁺
LTC3769
EXTV_CC
OVMODE
SENSE^–
ILIM
PLLIN/MODE
RUN
TG
FREQ
SW
SS
15nF
12.1k
ITH
100pF
BG
BOOST
12.1k
INTV_CC
VFB
GND
232k
V_IN
18V TO 32V
4mΩ
•
L1
4.7µF
×3 ₊
33µF
4.7µF
D1
(×4)
M1
• ^L1
4.7µF
×5
+
220µF
×2
V_OUT
24V
2.5A
4.7µF
L1: COILTRONICS, VERSAPAC VPH5-0067-R
D1: CENTRAL SEMICONDUCTOR, CMSH5-60
M1: INFINEON BSC0281106LS3
3769 F13
Figure 13. Low I_Q 24V_OUT SEPIC Converter
For more information www.linear.com/LTC3769
3769f
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