LTC3786_15 Datasheet, PDF (29/34 Pages) Linear Technology – Low IQ Synchronous Boost Controller

Applications Information
LTC3786
VBIAS
SENSE⁺
C_SS
0.1µF
C_ITH
15nF
R_ITH
8.87k
C_ITHA
220pF
R_A
12.1k
R_B
232k
LTC3786
RUN
FREQ
SS
SENSE^–
TG
SW
BOOST
ITH
BG
INTV_CC
GND
PLLIN/MODE
VFB
PGOOD
C1
0.1µF
R_S2
26.1k RS1
1% 53.6k
1%
C_B
0.1µF
D
C_INT
4.7µF
100k
C1: TDK C1005X7R1C104K
C_IN, C_OUTA: TDK C4532X5R1E226M
C_OUTB: SANYO, 50CE220AX
L: PULSE PA2050.103NL
MBOT, MTOP: RENESAS RJK0305
D: INFINEON BAS140W
L
10.2µH
MTOP
MBOT
C_IN
22µF
V_IN
5V TO 24V
C_OUTA ⁺
22µF
×4
C_OUTB
220µF
V_OUT
24V
4A
3786 F14a
100
98
96
94
92
90
88
86
0
V_IN = 12V
1
2
3
OUTPUT CURRENT (A)
4
3786 F14b
Figure 14. High Efficiency 24V Boost Converter with Inductor DCR Current Sensing
3786fa
29