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| LTC3859AL Datasheet, PDF (38/44 Pages) Linear Technology – Triple Output, Buck/Buck/Boost Synchronous Controller with 28μA Burst Mode IQ | |||
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LTC3859AL
Typical Applications
VOUT1
RA1
68.1k
OPT
RB1
357k
CITH1A
100pF
CITH1
1500pF
RITH1
15k
CSS1
0.1µF
LTC3859AL
VFB1
SENSE1â
SENSE1+
ITH1
PGOOD1
TG1
TRACK/SS1
SW1
FREQ
BOOST1
PLLIN/MODE BG1
C1
1nF
100k
CB1
0.1µF
MTOP1
MBOT1
C1
10µF L1
4.9µH
RSENSE1
6mâ¦
VOUT1
5V
5A
COUT1
220µF
VOUT2
RA2
68.1k
10pF
RB2
649k
CITH2
2.2nF
RITH2
15k
CITH2A
68pF
SGND
RUN1
RUN2
RUN3
VFB2
ITH2
VBIAS
PGND
INTVCC
D1
CBIAS
10µF
CINT1
4.7µF
D2
C2
10µF
CSS2
0.1µF
VOUT3
RA3
68.1k
OPT
RB3
499k
CITH3
0.01µF
RITH3
3.6k
CITH3A
820pF
TG2
TRACK/SS2 BOOST2
SW2
BG2
VFB3
SENSE2+
ITH3
SENSE2â
CB2
0.1µF
C2
1nF
MTOP2 L2
6.5µH
RSENSE2
8mâ¦
MBOT2
VOUT2
8.5V
3A
COUT2
68µF
CSS3
0.1µF
SS3
MTOP1, MTOP2: BSZ097NO4LS
MBOT1, MBOT2: BSZ097NO4LS
MTOP3: BSC027NO4LS
MBOT3: BSCO1BN04LS
L1: WÃRTH 744314490
L2: WÃRTH 744314650
L3: WÃRTH 744325120
COUT1: SANYO 6TPB220ML
COUT2: SANYO 10TPC68M
CIN, COUT3: SANYO 50CE220LX
D1, D2: CMDH-4E
D3: BAS140W
VOUT1
OV3
EXTVCC
TG3
SW3
BOOST3
BG3
SENSE3â
SENSE3+
3859al F12
D3
CB3
0.1µF
C3
1nF
MTOP3 L3
1.2µH
RSENSE2
2mâ¦
MBOT3
VIN
2.5V TO 38V
(START-UP ABOVE 5V)
CIN
220µF
* VOUT3 IS 10V WHEN VIN < 10V,
FOLLOWS VIN WHEN VIN > 10V
Figure 12. High Efficiency Wide Input Range Dual 5V/8.5V Converter
VOUT3
10V*
COUT3
220µF
38
For more information www.linear.com/3859AL
3859alf
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