LTC3786_15 Datasheet, PDF (27/34 Pages) Linear Technology – Low IQ Synchronous Boost Controller

Applications Information
LTC3786
VBIAS
SENSE⁺
60.4k
f_SW = 400kHz
C_SS
0.1µF
C_ITH
10nF
R_ITH
4.64k
C_ITHA
100pF
R_A
12.1k
R_B
88.7k
LTC3786
SENSE^–
RUN
FREQ
TG
SW
C_B
SS
0.1µF
BOOST
BG
ITH
D
INTV_CC
GND
VFB
100k
PLLIN/MODE
100k
PGOOD
R_SENSE
5mΩ
L
3.2µH
MTOP
MBOT
C_INT
4.7µF
V_IN
4.5V TO 24V START-UP
C_IN
VOLTAGE OPERATES THROUGH
22µF
TRANSIENTS DOWN TO 2.5V
C_OUTA +
22µF
×3
C_OUTB
150µF
V_OUT*
10V
5A
C_IN, C_OUTA: TDK C4532X5R1E226M
C_OUTB: SANYO 35HVH150M
L: SUMIDA CDEP106-3R2-88
MBOT, MTOP: RENESAS HAT2170
D: INFINEON BAS140W
*WHEN V_IN > 10V, V_OUT FOLLOWS V_IN.
100
98
V_IN = 12V
V_IN = 9V
96
V_IN = 6V
94
92
90
88
86
12
3
4
5
6
OUTPUT CURRENT (A)
3786 F12b
3786 F12a
Figure 12. High Efficiency 10V Boost Converter
3786fa
27